阅读说明：本技术 聚碳酸酯-聚有机硅氧烷共聚物 (Polycarbonate-polyorganosiloxane copolymer ) 是由 井手田一茂 石井宏寿 石川康弘 于 2018-12-27 设计创作，主要内容包括：一种聚碳酸酯-聚有机硅氧烷共聚物,其特征在于,所述聚碳酸酯-聚有机硅氧烷共聚物(A)含有：包含具有特定结构的重复单元的聚碳酸酯嵌段(A-1)和含有具有特定结构的重复单元的聚有机硅氧烷嵌段(A-2),上述聚碳酸酯-聚有机硅氧烷共聚物(A)满足以下的条件(1)～(3)。(1)聚碳酸酯-聚有机硅氧烷共聚物(A)中的上述聚有机硅氧烷嵌段(A-2)的含量为大于40质量％且70质量％以下。(2)粘均分子量为10000以上且23000以下。(3)含有特定的聚碳酸酯嵌段作为上述聚碳酸酯嵌段(A-1)。(A polycarbonate-polyorganosiloxane copolymer, characterized in that the polycarbonate-polyorganosiloxane copolymer (A) contains: comprising a polycarbonate block (A-1) having a repeating unit having a specific structure and a polyorganosiloxane block (A-2) having a repeating unit having a specific structure, wherein the polycarbonate-polyorganosiloxane copolymer (A) satisfies the following conditions (1) to (3). (1) The content of the polyorganosiloxane block (A-2) in the polycarbonate-polyorganosiloxane copolymer (A) is more than 40 mass% and 70 mass% or less. (2) The viscosity average molecular weight is 10000-23000 inclusive. (3) Contains a specific polycarbonate block as the polycarbonate block (A-1).)

1. A polycarbonate-polyorganosiloxane copolymer characterized in that,

the polycarbonate-polyorganosiloxane copolymer (A) contains: a polycarbonate block A-1 comprising a repeating unit represented by the following general formula (I) and a polyorganosiloxane block A-2 comprising a repeating unit represented by the following general formula (II),

the polycarbonate-polyorganosiloxane copolymer (A) satisfies the following conditions (1) to (3):

(1) the content of the polyorganosiloxane block A-2 in the polycarbonate-polyorganosiloxane copolymer (A) is more than 40 mass% and 70 mass% or less;

(2) viscosity average molecular weight is 10000 to 23000;

(3) containing a polycarbonate block in which a and b in the general formula (I) are 0 and X represents isopropylidene as the polycarbonate block A-1,

in the formula, R¹And R²Each independently represents a halogen atom, an alkyl group having 1 to 6 carbon atoms or an alkoxy group having 1 to 6 carbon atoms, X represents a single bond, an alkylene group having 1 to 8 carbon atoms, an alkylidene group having 2 to 8 carbon atoms, a cycloalkylene group having 5 to 15 carbon atoms, an arylene group having 6 to 12 carbon atoms, a cycloalkylidene group having 5 to 15 carbon atoms, a fluorenediyl group, an arylalkylene group having 7 to 15 carbon atoms, an arylalkylidene group having 7 to 15 carbon atoms, -S-, -SO₂-, -O-or-CO-, R³And R⁴Each independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms or an aryl group having 6 to 12 carbon atoms, and a and b each independently represents an integer of 0 to 4.

2. The polycarbonate-polyorganosiloxane copolymer according to claim 1, wherein the content of the unit represented by the following general formula (III) in the polyorganosiloxane block A-2 is 0.1 mol% or less,

in the formula, R³³And R³⁴Each independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms or an aryl group having 6 to 12 carbon atoms, R³¹Represents an alkylene group having 1 to 8 carbon atoms, an alkylidene group having 2 to 8 carbon atoms, or a ring having 5 to 15 carbon atomsAlkylene group, C5-15 cycloalkylene group, C6-12 arylene group, fluorenediyl group, C7-15 arylalkylene group, C7-15 arylalkylidene group, R³⁵Represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms or an aryl group having 6 to 12 carbon atoms, and t represents an average chain length of the polyorganosiloxane.

3. The polycarbonate-polyorganosiloxane copolymer according to claim 1 or 2, wherein the number of repetitions of the polyorganosiloxane block a-2 is 10 or more and less than 90.

4. The polycarbonate-polyorganosiloxane copolymer according to claim 3, wherein the number of repetitions of the polyorganosiloxane block A-2 is 10 or more and 40 or less.

5. The polycarbonate-polyorganosiloxane copolymer according to any one of claims 1 to 4, wherein the molecular weight distribution Mw/Mn is 2.1 or more and 3.9 or less.

6. The polycarbonate-polyorganosiloxane copolymer according to any one of claims 1 to 5, having a weight-average molecular weight of 40000 or less.

7. The polycarbonate-polyorganosiloxane copolymer according to any one of claims 1 to 6, wherein the polyorganosiloxane block A-2 contains a unit represented by at least formula 1 of the following general formulae (II-I) to (II-III),

in the formula, R³～R⁶Each independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms or an aryl group having 6 to 12 carbon atoms, and a plurality of R³～R⁶Optionally identical to or different from each other, Y represents-R⁷O-、-R⁷COO-、-R⁷NH-、-R⁷NR⁸-、-COO-、-S-、-R⁷COO-R⁹-O-or-R⁷O-R¹⁰-O-, a plurality of Y are optionally the same or different from each other, said R⁷Represents a single bond, a linear alkylene group, a branched alkylene group, a cyclic alkylene group, an aryl-substituted alkylene group, a substituted or unsubstituted arylene group, or a diarylene group, R⁸Represents alkyl, alkenyl, aryl or aralkyl, R⁹Represents a diarylidene group, R¹⁰Represents a linear alkylene group, a branched alkylene group, a cyclic alkylene group or a diarylene group, β represents a group having a valence of 2 derived from a diisocyanate compound or a group having a valence of 2 derived from a dicarboxylic acid or a halide of a dicarboxylic acid, n represents a chain length of polyorganosiloxane, n-1 and p and q are each an integer of 1 or more representing the number of repeating polyorganosiloxane units, and the sum of p and q is n-2.

8. The polycarbonate-polyorganosiloxane copolymer according to any one of claims 1 to 7, wherein the polyorganosiloxane block A-2 is represented by the following general formula (V),

in the formula, R³～R⁶And n-1 is the same as described in the above general formulae (II-I) to (II-III), R¹⁵Represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms or an aryl group having 6 to 12 carbon atoms.

9. The polycarbonate-polyorganosiloxane copolymer according to any one of claims 1 to 8, which has a chemical formula of according to JIS K7361-1: 1997 measured at a thickness of 2mm, the total light transmittance was 75% or more.

10. The polycarbonate-polyorganosiloxane copolymer according to any one of claims 1 to 9, which has a chemical formula according to JIS K6253-3: 2012a durometer hardness based on type D durometer of 25 or more and 60 or less.

Technical Field

The present invention relates to polycarbonate-polyorganosiloxane copolymers. More specifically, the present invention relates to a polycarbonate-polyorganosiloxane copolymer having flexibility and excellent transparency.

As a lighting cover and an optical lens of a street lamp or the like, a resin molded product having flexibility which can be attached to various shapes or deformed and processed in response to various designs has been demanded. In such applications, flexibility, transparency, and mechanical properties are required.

As such a resin, an acrylic resin has been widely studied from the viewpoint of high transparency and optical characteristics (patent document 1). Acrylic resins have excellent transparency and flexibility, but have disadvantages of poor mechanical strength, moldability and workability.

Background

Patent document

Patent document 1: japanese patent laid-open publication No. 2003-277574

Disclosure of Invention

Problems to be solved by the invention

Polycarbonate resins are superior to acrylic resins in mechanical strength and moldability, but tend to be inferior in flexibility.

The purpose of the present invention is to provide a polycarbonate-polyorganosiloxane copolymer having both excellent flexibility and transparency.

Means for solving the problems

The present inventors have found that a polycarbonate-polyorganosiloxane copolymer (hereinafter, sometimes simply referred to as a PC-POS copolymer) having a specific structural unit and having specific conditions is made to have flexibility and can maintain excellent transparency and mechanical strength of the polycarbonate-polyorganosiloxane copolymer.

That is, the present invention relates to the following [1] to [10 ].

[1] A polycarbonate-polyorganosiloxane copolymer characterized in that,

the polycarbonate-polyorganosiloxane copolymer (A) contains: a polycarbonate block (A-1) comprising a repeating unit represented by the following general formula (I) and a polyorganosiloxane block (A-2) comprising a repeating unit represented by the following general formula (II),

the polycarbonate-polyorganosiloxane copolymer (A) satisfies the following conditions (1) to (3).

(1) The content of the polyorganosiloxane block (A-2) in the polycarbonate-polyorganosiloxane copolymer (A) is more than 40 mass% and 70 mass% or less.

(2) The viscosity average molecular weight is 10000-23000 inclusive.

(3) The polycarbonate block (A-1) is a polycarbonate block wherein a and b in the general formula (I) are 0 and X represents isopropylidene.

[ solution 1]

[ in the formula, R¹And R²Each independently represents a halogen atom, an alkyl group having 1 to 6 carbon atoms or an alkoxy group having 1 to 6 carbon atoms. X represents a single bond, an alkylene group having 1 to 8 carbon atoms, an alkylidene group having 2 to 8 carbon atoms, a cycloalkylene group having 5 to 15 carbon atoms, an arylene group having 6 to 12 carbon atoms, a cycloalkylidene group having 5 to 15 carbon atoms, a fluorenediyl group, an arylalkylene group having 7 to 15 carbon atoms, an arylalkylidene group having 7 to 15 carbon atoms, -S-, -SO₂-, -O-or-CO-. R³And R⁴Each independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms or an aryl group having 6 to 12 carbon atoms. a and b each independently represent an integer of 0 to 4.]

[2] The polycarbonate-polyorganosiloxane copolymer according to the above [1], wherein the content of the unit represented by the following general formula (III) is 0.1 mol% or less in the polyorganosiloxane block (A-2).

[ solution 2]

[ in the formula, R³³And R³⁴Each independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms or an aryl group having 6 to 12 carbon atoms. R³¹Represents the number of carbons1 to 8 alkylene groups, 2 to 8 alkylidene groups, 5 to 15 cycloalkylene groups, 5 to 15 cycloalkylidene groups, 6 to 12 arylene groups, fluorenediyl groups, 7 to 15 arylalkylene groups, and 7 to 15 arylalkylidene groups. R³⁵Represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms or an aryl group having 6 to 12 carbon atoms. t represents the average chain length of the polyorganosiloxane.]

[3] The polycarbonate-polyorganosiloxane copolymer according to the above [1] or [2], wherein the number of repetitions of the polyorganosiloxane block (A-2) is 10 or more and less than 90.

[4] The polycarbonate-polyorganosiloxane copolymer according to the above [3], wherein the number of repetitions of the polyorganosiloxane block (A-2) is 10 or more and 40 or less.

[5] The polycarbonate-polyorganosiloxane copolymer according to any one of the above [1] to [4], which has a molecular weight distribution Mw/Mn of 2.1 to 3.9.

[6] The polycarbonate-polyorganosiloxane copolymer according to any one of the above [1] to [5], which has a weight-average molecular weight of 40000 or less.

[7] The polycarbonate-polyorganosiloxane copolymer according to any one of the above [1] to [6], wherein the polyorganosiloxane block (A-2) contains a unit represented by at least 1 of the following general formulae (II-I) to (II-III).

[ solution 3]

[ in the formula, R³～R⁶Each independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms or an aryl group having 6 to 12 carbon atoms, and a plurality of R³～R⁶May be the same or different from each other. Y represents-R⁷O-、-R⁷COO-、-R⁷NH-、-R⁷NR⁸-、-COO-、-S-、-R⁷COO-R⁹-O-or-R⁷O-R¹⁰-O-, and Y's may be the same or different from each other. The R is⁷Represents a single bond, a linear alkylene group, a branched alkylene group, a cyclic alkylene group, an aryl-substituted alkylene group, a substituted or unsubstituted arylene group, or a diarylene group. R⁸Represents an alkyl group, an alkenyl group, an aryl group or an aralkyl group. R⁹Represents a diarylidene group. R¹⁰β represents a group having a valence of 2 derived from a diisocyanate compound or a group having a valence of 2 derived from a dicarboxylic acid or a halide of a dicarboxylic acid, n represents a chain length of polyorganosiloxane, n-1 and p and q are each an integer of 1 or more representing the number of repeating polyorganosiloxane units, and the sum of p and q is n-2.]

[8] The polycarbonate-polyorganosiloxane copolymer according to any one of the above [1] to [7], wherein the polyorganosiloxane block (A-2) is represented by the following general formula (V).

[ solution 4]

[ in the formula, R³～R⁶And n-1 is the same as those described in the above general formulae (II-I) to (II-III). R¹⁵Represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms or an aryl group having 6 to 12 carbon atoms.]

[9] The polycarbonate-polyorganosiloxane copolymer according to any one of the above [1] to [8], which has a chemical formula according to JIS K7361-1: 1997 measured at a thickness of 2mm, the total light transmittance was 75% or more.

[10] The polycarbonate-polyorganosiloxane copolymer according to any one of the above [1] to [9], which has a chemical formula according to JIS K6253-3: 2012a durometer hardness based on type D durometer of 25 or more and 60 or less.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, a polycarbonate-polyorganosiloxane copolymer having both excellent flexibility and transparency can be obtained.

Detailed Description

The polycarbonate-polyorganosiloxane copolymer of the present invention will be described in detail below. In the present specification, the preferable specifications may be arbitrarily adopted, and the combinations of the preferable specifications are more preferable. In the present specification, the expression "XX to YY" means "XX or more and YY or less".

The polycarbonate-polyorganosiloxane copolymer (a) of the present invention is characterized in that the polycarbonate-polyorganosiloxane copolymer (a) contains: a polycarbonate block (A-1) comprising a repeating unit represented by the following general formula (I) and a polyorganosiloxane block (A-2) comprising a repeating unit represented by the following general formula (II), and which satisfies the following conditions (1) to (3).

(1) The content of the polyorganosiloxane block (A-2) is more than 40% by mass and 70% by mass or less.

(2) The viscosity average molecular weight is 10000-23000 inclusive.

(3) The polycarbonate block (A-1) is a polycarbonate block wherein a and b in the general formula (I) are 0 and X represents isopropylidene.

[ solution 5]

[ in the formula, R¹And R²Each independently represents a halogen atom, an alkyl group having 1 to 6 carbon atoms or an alkoxy group having 1 to 6 carbon atoms. X represents a single bond, an alkylene group having 1 to 8 carbon atoms, an alkylidene group having 2 to 8 carbon atoms, a cycloalkylene group having 5 to 15 carbon atoms, an arylene group having 6 to 12 carbon atoms, a cycloalkylidene group having 5 to 15 carbon atoms, a fluorenediyl group, an arylalkylene group having 7 to 15 carbon atoms, an arylalkylidene group having 7 to 15 carbon atoms, -S-, -SO₂-, -O-or-CO-. R³And R⁴Each independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms or an aryl group having 6 to 12 carbon atoms. a and b each independently represent an integer of 0 to 4.]

The polycarbonate block (A-1) represented by the general formula (I) will be described in detail. In the above general formula (I), as R¹And R²Examples of the halogen atom independently include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.

As R¹And R²Examples of the alkyl group which is independently represented include a methyl group, an ethyl group, a n-propyl group, an isopropyl group, various butyl groups ("each" represents a group including a straight chain and all branched chains, and the same applies hereinafter), various pentyl groups, and various hexyl groups. As R¹And R²Examples of the alkoxy group which is independently represented include those in which the alkyl moiety is the above-mentioned alkyl group.

Examples of the alkylene group represented by X include methylene, ethylene, trimethylene, tetramethylene, and hexamethylene, and an alkylene group having 1 to 5 carbon atoms is preferable. Examples of the alkylidene group represented by X include ethylidene group and isopropylidene group. Examples of the cycloalkylene group represented by X include cyclopentanediyl group, cyclohexanediyl group, cyclooctanediyl group, and the like, and a cycloalkylene group having 5 to 10 carbon atoms is preferable. Examples of the arylene group represented by X include a phenylene group, a naphthylene group, and a biphenylene group. Examples of the cycloalkylidene group represented by X include cyclohexylidene, 3, 5, 5-trimethylcyclohexylidene, and 2-adamantylidene, and a cycloalkylidene group having 5 to 10 carbon atoms is preferable, and a cycloalkylidene group having 5 to 8 carbon atoms is more preferable. Examples of the aryl moiety of the arylalkylene group represented by X include aryl groups having 6 to 14 ring-forming carbon atoms such as a phenyl group, a naphthyl group, a biphenyl group, and an anthracenyl group. Examples of the aryl moiety of the arylalkylidene group represented by X include aryl groups having 6 to 14 ring-forming carbon atoms such as phenyl, naphthyl, biphenyl, and anthracenyl.

a and b each independently represent an integer of 0 to 4, preferably 0 to 2, more preferably 0 or 1.

Among them, a block in which a and b are 0 and X is a single bond or an alkylene group having 1 to 8 carbon atoms, or a block in which a and b are 0 and X is an alkylidene group, particularly isopropylidene group, is suitable.

In the present invention, the following conditions are provided: (3) the polycarbonate block (A-1) (hereinafter, sometimes abbreviated as BPA block) is a polycarbonate block in which a and b in the general formula (I) are 0 and X represents isopropylidene. The amount of the BPA block in the polycarbonate block (A-1) is preferably 90% by mass or more, more preferably 90.9% by mass or more, still more preferably 93.3% by mass or more, particularly preferably 95% by mass or more, and most preferably 100% by mass. From the viewpoint of transparency, the amount of BPA block is preferably in the above range.

Two or more polycarbonate blocks may be contained as long as the above-mentioned condition (3) is satisfied as the polycarbonate block (A-1). When the polycarbonate block (A-1) contains two or more blocks, the total of the BPA block and the other polycarbonate blocks is 100% by mass.

Next, the polyorganosiloxane block (A-2) represented by the general formula (II) will be described in detail.

In the above general formula (II), as R³Or R⁴Examples of the halogen atom independently include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom. As R³Or R⁴Examples of the alkyl group which is independently represented include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, various butyl groups, various pentyl groups, and various hexyl groups. As R³Or R⁴Examples of the alkoxy group which is independently represented include those in which the alkyl moiety is the above-mentioned alkyl group. As R³Or R⁴Examples of the aryl group which is independently represented include a phenyl group and a naphthyl group.

As R³And R⁴Preferably, the alkyl group has 1 to 6 carbon atoms, the alkoxy group has 1 to 6 carbon atoms or the aryl group has 6 to 12 carbon atoms, and more preferably, the methyl group.

The polyorganosiloxane block containing the repeating unit represented by the general formula (II) preferably has units represented by the following general formulae (II-I) to (II-III).

[ solution 6]

[ in the formula, R³～R⁶Each independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms or an aryl group having 6 to 12 carbon atoms, and a plurality of R³～R⁶May be the same or different from each other. Y represents-R⁷O-、-R⁷COO-、-R⁷NH-、-R⁷NR⁸-、-COO-、-S-、-R⁷COO-R⁹-O-or-R⁷O-R¹⁰-O-, a plurality ofY may be the same or different from each other. The R is⁷Represents a single bond, a linear alkylene group, a branched alkylene group, a cyclic alkylene group, an aryl-substituted alkylene group, a substituted or unsubstituted arylene group, or a diarylene group. R⁸Represents an alkyl group, an alkenyl group, an aryl group or an aralkyl group. R⁹Represents a diarylidene group. R¹⁰β represents a group having a valence of 2 derived from a diisocyanate compound or a group having a valence of 2 derived from a dicarboxylic acid or a halide of a dicarboxylic acid, n represents a chain length of polyorganosiloxane, n-1 and p and q are each an integer of 1 or more representing the number of repeating polyorganosiloxane units, and the sum of p and q is n-2.]

As R³～R⁶Examples of the halogen atom independently include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom. As R³～R⁶Examples of the alkyl group which is independently represented include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, various butyl groups, various pentyl groups, and various hexyl groups. As R³～R⁶Examples of the alkoxy group which is independently represented include those in which the alkyl moiety is the above-mentioned alkyl group. As R³～R⁶Examples of the aryl group which is independently represented include a phenyl group and a naphthyl group.

As R³～R⁶Preferably, the alkyl group has 1 to 6 carbon atoms, the alkoxy group has 1 to 6 carbon atoms, or the aryl group has 6 to 12 carbon atoms.

R in the general formulae (II-I), (II-II) and/or (II-III)³～R⁶Both are preferably methyl.

as-R of Y⁷O-、-R⁷COO-、-R⁷NH-、-R⁷NR⁸-、-R⁷COO-R⁹-O-or-R⁷O-R¹⁰R in-O-⁷The straight-chain or branched alkylene group represented by the formula (I) includes alkylene groups having 1 to 8 carbon atoms, preferably 1 to 5 carbon atoms, and the cyclic alkylene group includes cycloalkylene groups having 5 to 15 carbon atoms, preferably 5 to 10 carbon atoms.

As R⁷The aryl-substituted alkylene group may have an alkoxy group on the aromatic ringThe substituent such as an alkyl group may have, for example, a structure represented by the following general formula (i) or (ii). When an alkylene group substituted with an aryl group is present, the alkylene group is bonded to Si.

[ solution 7]

(wherein c represents a positive integer, usually an integer of 1 to 6.)

R⁷、R⁹And R¹⁰The diarylene group means a group in which two arylene groups are bonded directly or via a divalent organic group, and specifically has-Ar¹-W-Ar²-a group of the structure represented. Ar (Ar)¹And Ar²Represents an arylene group, and W represents a single bond or a 2-valent organic group. Examples of the organic group having a valence of 2 represented by W are isopropylidene, methylene, dimethylene and trimethylene.

As R⁷、Ar¹And Ar²The arylene group includes arylene groups having 6 to 14 ring-forming carbon atoms such as phenylene, naphthylene, biphenylene, anthracenylene and the like. These arylene groups may have an alkoxy group, an alkyl group, or the like as optional substituents.

As R⁸The alkyl group is a linear or branched group having 1 to 8 carbon atoms, preferably 1 to 5 carbon atoms. The alkenyl group includes a linear or branched group having 2 to 8 carbon atoms, preferably 2 to 5 carbon atoms. Examples of the aryl group include a phenyl group and a naphthyl group. Examples of the aralkyl group include a phenylmethyl group, a phenylethyl group and the like.

R¹⁰The linear alkylene group, the branched alkylene group, the cyclic alkylene group and R are shown⁷The same is true.

Y is preferably-R⁷O-，R⁷The alkyl group is an aryl-substituted alkylene group, and is particularly a residue of a phenolic compound having an alkyl group, and more preferably an organic residue derived from allyl phenol or an organic residue derived from eugenol.

P and q in formula (II-II) are preferably p ═ q.

β represents a group having a valence of 2 derived from a diisocyanate compound or a group having a valence of 2 derived from a dicarboxylic acid or a halide of a dicarboxylic acid, and examples thereof include groups having a valence of 2 represented by the following general formulae (iii) to (vii).

[ solution 8]

The PC-POS copolymer of the invention further preferably comprises a polyorganosiloxane block (A-2) represented by the following general formula (V).

[ solution 9]

[ in the formula, R³～R⁶And n are the same as those described in the above general formulae (II-I) to (II-III). R¹⁵Represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms or an aryl group having 6 to 12 carbon atoms.]

The number of repetitions of the polyorganosiloxane block (A-2) in the PC-POS copolymer is preferably 10 or more and less than 90, more preferably 10 or more and less than 40, specifically preferably 10 or more, more preferably 15 or more, still more preferably 20 or more, preferably less than 90, more preferably 80 or less, still more preferably 60 or less, still more preferably 45 or less, still more preferably 40 or less, and particularly preferably less than 40.

The number of repetitions can be calculated by nuclear Magnetic Resonance (MR) measurement. When the number of repetitions of the polyorganosiloxane block (a-2) is in the above range, excellent transparency and flexibility can be achieved at the same time, and peeling of the molded article after production can be suppressed.

In the PC-POS copolymer (A) of the present invention, it is important that the content of the polyorganosiloxane block (A-2) in (1) the PC-POS copolymer (A) is more than 40% by mass and not more than 70% by mass. By setting the content of the polyorganosiloxane block (A-2) in the PC-POS copolymer to more than 40% by mass, a copolymer having excellent flexibility can be obtained. When the content of the polyorganosiloxane block (a-2) is 70% by mass or less, a copolymer having no significant tackiness and capable of maintaining the shape of a flexible molded article is obtained.

The content of the polyorganosiloxane block (A-2) in the PC-POS copolymer (A) of the present invention is preferably 41% by mass or more, more preferably 45% by mass or more, preferably 65% by mass or less, more preferably 60% by mass or less.

Further, it is important for the PC-POS copolymer of the present invention that (2) the viscosity average molecular weight (Mv) is 10000 to 23000 inclusive. The viscosity average molecular weight (Mv) can be adjusted by using a molecular weight modifier (capping agent) or the like or by reaction conditions. By setting the viscosity-average molecular weight in the range of (2), a copolymer excellent in moldability can be obtained.

The viscosity-average molecular weight (Mv) is preferably 12000 or more, more preferably 14000 or more, further preferably 16000 or more, preferably 21500 or less, more preferably 20500 or less, further preferably 19500 or less, further preferably 18500 or less, and particularly preferably 18000 or less. When the viscosity average molecular weight is 10000 or more, a sufficient strength of a molded article can be obtained.

The viscosity-average molecular weight (Mv) is a value obtained by measuring the intrinsic viscosity [ eta ] of a methylene chloride solution at 20 ℃ and calculating it according to the Schnell formula below.

[ mathematical formula 1]

[η]＝1.23×10^-5×Mv^0.83

The weight average molecular weight (Mw) of the PC-POS copolymer of the present invention is preferably 40000 or less. By setting the weight average molecular weight (Mw) within the above range, a PC-POS copolymer having excellent flexibility can be obtained. The weight average molecular weight (Mw) of the PC-POS copolymer is more preferably 37000 or less, still more preferably 35000 or less, and still more preferably 30000 or less. The weight average molecular weight (Mw) is preferably 20000 or more, more preferably 23000 or more.

The PC-POS copolymer (A) of the present invention preferably has a molecular weight distribution (Mw/Mn) of 2.1 to 3.9. When the molecular weight distribution Mw/Mn of the PC-POS copolymer is in the above range, the unevenness due to irregular flow or phase separation can be suppressed at the time of molding the PC-POS copolymer, and a molded article having high transparency and easily controlled flexibility can be obtained, which is preferable.

The molecular weight distribution Mw/Mn of the PC-POS copolymer (A) is more preferably 2.3 or more, still more preferably 2.4 or more, still more preferably 2.5 or more, still more preferably 2.7 or more, particularly preferably 2.8 or more, still more preferably 3.5 or less, still more preferably 3.0 or less, and particularly preferably 2.9 or less.

The PC-POS copolymer (A) can be produced by a known production method such as an interfacial polymerization method (phosgene method), a pyridine method or an ester exchange method. In particular, the interfacial polymerization method in which polyorganosiloxane is added to a reaction system for polymerizing a dihydric phenol and a carbonate precursor to copolymerize them is preferable because the step of separating an organic phase containing a PC-POS copolymer from an aqueous phase containing unreacted products, catalyst residues, and the like is facilitated, and the step of separating an organic phase containing a PC-POS copolymer from an aqueous phase in each washing step by alkali washing, acid washing, and pure water (ion-exchanged water) washing is facilitated. As a method for producing a PC-POS copolymer, for example, a method described in Japanese patent laid-open publication No. 2014-80462 and the like can be referred to.

Specifically, the polycarbonate oligomer and polyorganosiloxane, which are prepared in advance as described later, are dissolved in a water-insoluble organic solvent (methylene chloride or the like), an aqueous solution of a basic compound (sodium hydroxide aqueous solution or the like) of a diphenolic compound (bisphenol a or the like) is added, and an interfacial polycondensation reaction is performed in the presence of an end-capping agent (monophenol such as p-tert-butylphenol) using a tertiary amine (triethylamine or the like) or a quaternary ammonium salt (trimethyl benzyl ammonium chloride or the like) as a polymerization catalyst. The PC-POS copolymer can also be produced by copolymerizing a polyorganosiloxane with a dihydric phenol and phosgene, a carbonate or a chloroformate.

For example, when the PC-POS copolymer (A) contained in the polycarbonate-based resin composition of the present invention is produced by reacting a polycarbonate oligomer with a polyorganosiloxane raw material in an organic solvent and then reacting the reaction product with a dihydric phenol, the solid content weight (g/L) of the polycarbonate oligomer in the mixed solution 1L of the organic solvent and the polycarbonate oligomer is preferably in the range of 200g/L or less from the viewpoint of transparency of the obtained PC-POS copolymer. More preferably 180g/L or less, and still more preferably 170g/L or less.

The lower limit of the weight (g/L) of the polycarbonate oligomer in the mixed solution 1L of the organic solvent and the polycarbonate oligomer is not particularly limited since the transparency of the obtained copolymer becomes better as the weight of the solid content (g/L) of the polycarbonate oligomer is lower, but from the viewpoint of efficiently producing a PC-POS copolymer, the lower limit is preferably 20g/L or more, more preferably 30g/L or more, and still more preferably 40g/L or more.

The polyorganosiloxane used as the raw material may be represented by the following general formula (1), (2) and/or (3).

[ solution 10]

In the above formula, R³～R⁶Y, β, n-1, p and q are as described above, and the same applies to the specific examples and preferred examples.

Z represents a hydrogen atom or a halogen atom, and Z's may be the same or different from each other.

Examples of the polyorganosiloxane represented by the general formula (1) include compounds represented by the following general formulae (1-1) to (1-11).

[ solution 11]

In the above general formulae (1-1) to (1-11), R³～R⁶N and R⁸The definition of (A) is as described above, and the preferable examples are also the same. c represents a positive integer, and is usually an integer of 1 to 6.

Among them, the phenol-modified polyorganosiloxane represented by the above general formula (1-1) is preferable from the viewpoint of ease of polymerization. From the viewpoint of ease of availability, α, ω -bis [3- (o-hydroxyphenyl) propyl ] polydimethylsiloxane, which is one of the compounds represented by the above general formula (1-2), and α, ω -bis [3- (4-hydroxy-3-methoxyphenyl) propyl ] polydimethylsiloxane, which is one of the compounds represented by the above general formula (1-3), are preferable.

Further, as the polyorganosiloxane raw material, a material having the following general formula (4) may also be used.

[ solution 12]

In the above formula, R³And R⁴The average chain length of the polyorganosiloxane block represented by the general formula (4) is (r × m) and the ranges of (r × m) are the same as those of the above n.

When the above-mentioned polyorganosiloxane block (4) is used as a raw material, the polyorganosiloxane block (A-2) preferably has a unit represented by the following general formula (II-IV).

[ solution 13]

[ R in the formula³、R⁴R and m are as described above]

The polyorganosiloxane block (A-2) may have a structure represented by the following general formula (II-V).

[ solution 14]

[ in the formula, R¹⁸～R²¹Each independently represents a hydrogen atom or an alkyl group having 1 to 13 carbon atoms. R²²Is alkyl group having 1 to 6 carbon atoms, hydrogen atom, halogen atom, hydroxyl group, alkoxy group having 1 to 6 carbon atoms, or aryl group having 6 to 14 carbon atoms. Q²Is a C1-10 2-valent aliphatic group. n-1 represents the number of repetitions of the polyorganosiloxane block, and the range is as defined above.]

In the general formula (II-V), as R¹⁸～R²¹Examples of the alkyl group having 1 to 13 carbon atoms which are independently represented include a methyl group, an ethyl group, a,N-propyl, isopropyl, various butyl groups, various pentyl groups, various hexyl groups, various heptyl groups, various octyl groups, 2-ethylhexyl groups, various nonyl groups, various decyl groups, various undecyl groups, various dodecyl groups, and various tridecyl groups. In which as R¹⁸～R²¹Preferably, the alkyl group is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and more preferably both are methyl groups.

As R²²Examples of the alkyl group having 1 to 6 carbon atoms include methyl, ethyl, n-propyl, isopropyl, various butyl groups, various pentyl groups, and various hexyl groups. As R²²Examples of the halogen atom include a fluorine atom, a chlorine atom, a bromine atom and an iodine atom. As R²²Examples of the alkoxy group having 1 to 6 carbon atoms include those having an alkyl group as the alkyl moiety. As R²²Examples of the aryl group having 6 to 14 carbon atoms include phenyl, benzoyl, dimethylphenyl, naphthyl and the like.

Hereinbefore, R²²The hydrogen atom or the alkoxy group having 1 to 6 carbon atoms is preferable, the hydrogen atom or the alkoxy group having 1 to 3 carbon atoms is more preferable, and the hydrogen atom is further preferable.

As Q²The C1-10 aliphatic group with 2 valences is preferably C1-10 linear or branched C2 saturated aliphatic group. The number of carbon atoms of the saturated aliphatic group is preferably 1 to 8, more preferably 2 to 6, further preferably 3 to 6, and further preferably 4 to 6. The number of repetitions n-1 is the same as above.

Preferred examples of the structural unit (II-V) include structures represented by the following formulas (II-VI).

[ solution 15]

[ in the formula, n-1 is the same as above. ]

The polyorganosiloxane block (A-2) represented by the above general formula (II-V) or (II-VI) can be obtained by using a polyorganosiloxane raw material represented by the following general formula (5) or (6).

[ solution 16]

[ in the formula, R¹⁸～R²²、Q²And n-1 is as described above.]

[ solution 17]

[ wherein n-1 is as defined above. ]

The method for producing the polyorganosiloxane is not particularly limited. For example, according to the method described in Japanese patent application laid-open No. 11-217390, a crude polyorganosiloxane can be obtained by reacting cyclotrisiloxane and disiloxane in the presence of an acidic catalyst to synthesize α, ω -dihydroorganomentasiloxane, and then subjecting the α, ω -dihydroorganomentasiloxane to an addition reaction with a phenolic compound (e.g., 2-allylphenol, 4-allylphenol, eugenol, 2-propenylphenol, etc.) in the presence of a hydrosilylation catalyst. According to the method described in Japanese patent No. 2662310, a crude polyorganosiloxane can be obtained by reacting octamethylcyclotetrasiloxane with tetramethyldisiloxane in the presence of sulfuric acid (an acidic catalyst) and subjecting the obtained α, ω -dihydroorganopolysiloxane to an addition reaction with a phenolic compound or the like in the presence of a hydrosilylation catalyst in the same manner as described above. The α, ω -dihydroorganopolysiloxane can be used after its chain length n is appropriately adjusted by its polymerization conditions, and a commercially available α, ω -dihydroorganopolysiloxane can also be used. Specifically, as the hydrosilylating catalyst, those described in Japanese patent application laid-open No. 2016-098292 can be used.

The polycarbonate oligomer can be produced by reacting a dihydric phenol with a carbonate precursor such as phosgene or trichlorocarbonyl chloride in an organic solvent such as methylene chloride, chlorobenzene or chloroform. When a polycarbonate oligomer is produced by the transesterification method, it can also be produced by reacting a dihydric phenol with a carbonate precursor such as diphenyl carbonate.

As the dihydric phenol, a dihydric phenol represented by the following general formula (viii) is preferably used.

[ solution 18]

[ in the formula, R¹、R²A, b and X are as described above.]

Examples of the dihydric phenol represented by the general formula (viii) include bis (hydroxyphenyl) alkanes such as 2, 2-bis (4-hydroxyphenyl) propane [ bisphenol a ], bis (4-hydroxyphenyl) methane, 1-bis (4-hydroxyphenyl) ethane and 2, 2-bis (4-hydroxy-3, 5-dimethylphenyl) propane, 4' -dihydroxybiphenyl, bis (4-hydroxyphenyl) cycloalkane, bis (4-hydroxyphenyl) ether, bis (4-hydroxyphenyl) sulfide, bis (4-hydroxyphenyl) sulfone, bis (4-hydroxyphenyl) sulfoxide and bis (4-hydroxyphenyl) ketone. These dihydric phenols may be used alone in 1 kind, or may be used in combination in 2 or more kinds.

Among them, bis (hydroxyphenyl) alkane-based dihydric phenols are preferable, and bisphenol a is more preferable. In the case of using bisphenol a as the dihydric phenol, a PC-POS copolymer in which X in the above general formula (i) is isopropylidene and a ═ b ═ 0 is formed.

Examples of the dihydric phenol other than bisphenol A include bis (hydroxyaryl) alkanes, bis (hydroxyaryl) cycloalkanes, dihydroxyaryl ethers, dihydroxydiaryl sulfides, dihydroxydiaryl sulfoxides, dihydroxydiaryl sulfones, dihydroxybiphenyls, dihydroxydiaryl fluorenes, dihydroxydiaryl adamantanes, and the like. These dihydric phenols may be used alone in 1 kind, or may be used in combination in 2 or more kinds.

Examples of the bis (hydroxyaryl) alkane include bis (4-hydroxyphenyl) methane, 1-bis (4-hydroxyphenyl) ethane, 2-bis (4-hydroxyphenyl) butane, 2-bis (4-hydroxyphenyl) octane, bis (4-hydroxyphenyl) phenylmethane, bis (4-hydroxyphenyl) diphenylmethane, 2-bis (4-hydroxy-3-methylphenyl) propane, bis (4-hydroxyphenyl) naphthylmethane, 1-bis (4-hydroxy-3-t-butylphenyl) propane, 2-bis (4-hydroxy-3-bromophenyl) propane, 2-bis (4-hydroxy-3, 5-dimethylphenyl) propane, and the like, 2, 2-bis (4-hydroxy-3-chlorophenyl) propane, 2-bis (4-hydroxy-3, 5-dichlorophenyl) propane, 2-bis (4-hydroxy-3, 5-dibromophenyl) propane, and the like.

Examples of the bis (hydroxyaryl) cycloalkanes include 1, 1-bis (4-hydroxyphenyl) cyclopentane, 1-bis (4-hydroxyphenyl) cyclohexane, 1-bis (4-hydroxyphenyl) -3, 5, 5-trimethylcyclohexane, 2-bis (4-hydroxyphenyl) norbornane, and 1, 1-bis (4-hydroxyphenyl) cyclododecane. Examples of the dihydroxyaryl ethers include 4, 4 ' -dihydroxydiphenyl ether and 4, 4 ' -dihydroxy-3, 3 ' -dimethylphenyl ether.

Examples of the dihydroxydiarylsulfides include 4, 4 ' -dihydroxydiphenyl sulfide and 4, 4 ' -dihydroxy-3, 3 ' -dimethyldiphenyl sulfide. Examples of the dihydroxydiarylsulfoxides include 4, 4 ' -dihydroxydiphenyl sulfoxide, 4 ' -dihydroxy-3, 3 ' -dimethyldiphenyl sulfoxide, and the like. Examples of the dihydroxy diaryl sulfone include 4, 4 ' -dihydroxy diphenyl sulfone and 4, 4 ' -dihydroxy-3, 3 ' -dimethyl diphenyl sulfone.

Examples of the dihydroxybiphenyl include 4, 4' -dihydroxybiphenyl. Examples of the dihydroxydiarylfluorene include 9, 9-bis (4-hydroxyphenyl) fluorene and 9, 9-bis (4-hydroxy-3-methylphenyl) fluorene. Examples of the dihydroxydiaryladamantane include 1, 3-bis (4-hydroxyphenyl) adamantane, 2-bis (4-hydroxyphenyl) adamantane, and 1, 3-bis (4-hydroxyphenyl) -5, 7-dimethyladamantane.

Examples of the dihydric phenol other than the above-mentioned dihydric phenols include 4, 4' - [1, 3-phenylenebis (1-methylethylidene) ] bisphenol, 10-bis (4-hydroxyphenyl) -9-anthrone, 1, 5-bis (4-hydroxyphenylthio) -2, 3-dioxolane (Dioxapentane), and the like.

In order to adjust the molecular weight of the PC-POS copolymer obtained, an end-capping agent (molecular weight modifier) may be used. Examples of the end-capping agent include monophenols such as phenol, p-cresol, p-tert-butylphenol, p-tert-octylphenol, p-cumylphenol, p-nonylphenol, m-pentadecylphenol, and p-tert-amylphenol. These monohydric phenols may be used alone or in combination of two or more.

After the interfacial polycondensation reaction, the PC-POS copolymer (a) of the present invention can be obtained by a step of separating into an aqueous phase and an organic solvent phase by appropriately leaving it to stand [ separation step ], a step of washing the organic solvent phase (preferably, washing the organic solvent phase in the order of an alkaline aqueous solution, an acidic aqueous solution, and water) [ washing step ], a step of concentrating the obtained organic phase [ concentration step ], and a step of drying [ drying step ].

The content of the unit represented by the following general formula (III) in the polyorganosiloxane block (A-2) of the PC-POS copolymer (A) of the present invention is preferably 0.1 mol% or less.

[ solution 19]

[ in the formula, R³³And R³⁴Each independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms or an aryl group having 6 to 12 carbon atoms. R³¹Represents an alkylene group having 1 to 8 carbon atoms, an alkylidene group having 2 to 8 carbon atoms, a cycloalkylene group having 5 to 15 carbon atoms, a cycloalkylidene group having 5 to 15 carbon atoms, an arylene group having 6 to 12 carbon atoms, a fluorenediyl group, an arylalkylene group having 7 to 15 carbon atoms, and an arylalkylidene group having 7 to 15 carbon atoms. R³⁵Represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms or an aryl group having 6 to 12 carbon atoms. t represents the average chain length of the polyorganosiloxane.]

By setting the block represented by the general formula (III) to 0.1 mol% or less, it is possible to precisely control the chain length between the polyorganosiloxane used as a raw material for producing the PC-POS copolymer and the copolymer, and to obtain a PC-POS copolymer having both of the intended high flexibility and transparency.

Specifically, by using the interfacial polymerization method described above, a PC-POS copolymer having a block represented by the general formula (III) of 0.1 mol% or less can be obtained. The PC-POS copolymer (A) of the present invention theoretically cannot contain a block represented by the above general formula (III) in accordance with the order of synthesis, and its content is substantially 0.0 mol%.

The detailed description is made. The content of the block represented by the above general formula (III) in the above PC-POS copolymer (A) depends on¹³The peak of C-NMR was quantified. The specific quantitative method is shown in the examples. The lower limit of the quantitative determination method is based on¹³The SN ratio of the base line of the C-NMR chart was less than 0.1 mol%. With respect to the region less than 0.1 mol%, although quantification is impossible, semiquantification can be performed. In the case of semiquantitative analysis, the peak heights corresponding to (III) were compared with each other. When it is difficult to perform relative comparison of peak heights, the lower limit that can be semiquantitatively determined can be further lowered by increasing the number of accumulations to increase the SN ratio.

The content of the block represented by the general formula (III) in the PC-POS copolymer (a) contained in the molded article of the present invention, which is determined by the above-described quantitative method or semiquantitative method, is more preferably 0.08 mol% or less, still more preferably 0.05 mol% or less, and particularly preferably substantially 0.0 mol%.

In a conventionally known synthesis method, a carbonyl chloride gas having polymerization activity is reacted with a mixture of a bisphenol monomer and a polyorganosiloxane monomer or polyorganosiloxane. Therefore, even if the block amount represented by the above general formula (III) is reduced by improving the method of adding phosgene gas and the contact time, it is impossible to avoid the contact between a plurality of polyorganosiloxane monomer molecules and the phosgene gas having polymerization activity, and the block amount represented by the general formula (III) cannot be substantially 0.0 mol%.

On the other hand, in the synthesis method of the present invention, a bisphenol monomer or a bisphenol polycarbonate oligomer having a chloroformate structure at both ends is synthesized by reacting a bisphenol monomer with phosgene gas in advance, and then a polymerization-inactive polyorganosiloxane monomer, or a polymerization-inactive polyorganosiloxane monomer and a polymerization-inactive bisphenol monomer are reacted with a bisphenol monomer having a polymerizable chloroformate group at both ends, or a bisphenol polycarbonate oligomer having a polymerizable chloroformate group at both ends, and therefore, the general formula (III) cannot be substantially produced.

The PC-POS copolymer of the present invention is melt-kneaded to obtain raw material pellets. At this time, other additives may be added at the time of preparing the raw material particles within a range not to impair the effects of the present invention. Examples of the other additives include antioxidants, ultraviolet absorbers, mold release agents, reinforcing materials, fillers, elastomers for impact resistance improvement, dyes, pigments, antistatic agents, and other resins other than polycarbonate, and the amount of the other additives may be appropriately selected in an appropriate ratio.

The melt kneading can be carried out by the following method: a method in which the premix is prepared by a commonly used apparatus such as a ribbon blender, a drum tumbler, etc., and then a Henschel mixer, a Banbury mixer, a single-screw extruder, a twin-screw extruder, a multi-screw extruder, a kneader, etc. are used. The heating temperature during kneading is suitably selected in the range of usually 240 ℃ to 320 ℃. An extruder is preferably used for the melt kneading, and a vented extruder is particularly preferably used.

< shaped article >

Various molded articles can be produced by using the polycarbonate-polyorganosiloxane copolymer or the obtained pellets after the melt kneading as a raw material, and by injection molding, injection compression molding, extrusion molding, blow molding, press molding, vacuum molding, foam molding, or the like.

The molded article of the PC-POS copolymer of the present invention has both excellent flexibility and transparency. The respective properties are described in detail. As described below, some of the properties of the PC-POS copolymer are measured after the molded article is produced, but these properties are described as properties of the PC-POS copolymer because they are attributed to the properties of the PC-POS copolymer itself.

The flexibility is described in detail. PC-POS copolymers according to the invention are prepared according to JIS K6253-3: 2012, the durometer hardness by type D durometer measured by the method described in the examples is preferably 25 or more and 60 or less.

The durometer hardness is an index indicating the press-in hardness. The D-type durometer hardness is preferable in order to obtain a molded article having high flexibility while maintaining a certain degree of mechanical strength. The PC-POS copolymer of the present invention is excellent in flexibility, and therefore can be used as a lighting cover without using a sealing member, and can cope with a light guide having a complicated shape, and the workability can be dramatically improved. Further, even in the case of an optical member having a void structure with an undercut draft angle inside, the optical member can be integrally molded without performing an internal cutting process, and thus can be suitably used for a collimator lens. Since it is excellent in transparency and flexibility, it can be suitably used for substrates, light guide plates, housings, and water/oil repellent films for flexible displays, optical adhesives, switch covers, heat sealing agents, waterproof materials, sealants, connectors, adapters, protective cases for smart phones, and the like in the field of home electronics; can be suitably used for lenses, glasses/sunglasses parts, optical fiber parts in optical use; the present invention can be suitably used in a bumper material for an in-vehicle battery, a wiper blade, a curved mirror, a side view mirror, a rear view mirror, a lamp cover, a bumper, a window, a glass intermediate layer, an exterior material, an interior material, a sound absorbing material, a steering wheel cover, a sensor cover, and the like in an automobile; in the daily use articles, the composition can be suitably used for timepiece parts, stationery, cosmetic containers, aquacultural water tanks, shoe soles, cups, nail paintings, toys, artificial baits, cooking utensils such as suction cups and steamers, clothes, silicone wiping sheets, remote controller covers, umbrellas, metal container linings, and the like; can be suitably used for building materials such as building material cladding, doors, windows, glass interlayers, tents, mirrors, display cabinets, vinyl houses and the like; can be suitably used for medical equipment housings, infusion bags, infusion tubes, syringes, feeding bottles, masks, filter parts, and the like; can be suitably used for shock-absorbing parts, robot housings, unmanned aerial vehicle housings, shields, bulletproof shields, motion-damping materials, windows for airplanes, resin compatibilizers, and the like in other aspects.

The PC-POS copolymer of the present invention has a durometer hardness based on type D durometer of more preferably 30 or more, still more preferably 40 or more, still more preferably 55 or less, and still more preferably 50 or less.

Depending on the application in which the molded article of the present application is used, the preferred range of durometer hardness also varies. For example, when the resin composition is used for applications where flexibility is important, the resin composition is more preferably 28 or more, and still more preferably 33 or less. In addition, when the resin composition is used for applications where both flexibility and mechanical strength are important, the resin composition is more preferably 45 or more, and still more preferably 50 or less.

Depending on the shape of the molded article, the durometer hardness may not be measured, and in this case, the molded article may be once melted and remolded into a shape in which the durometer hardness can be measured, thereby measuring the durometer hardness. The molding conditions in this case were the same as those in the examples.

As a raw material for obtaining such a molded body, a raw material obtained by cutting, decomposing, breaking, or the like, a molded body and a member including the molded body can be used.

The transparency is described in detail. The PC-POS copolymer (A) of the invention is preferably a copolymer obtained by polymerizing a monomer (A) according to JIS K7361-1: 1997 measured at a thickness of 2mm, the total light transmittance was 75% or more. When the total light transmittance is set to 75% or more based on the above conditions, the optical transparent member is excellent in transparency, and therefore can be suitably used as the above optically transparent member.

The total light transmittance of the PC-POS copolymer (A) of the present invention at a thickness of 2mm is more preferably 85% or more, still more preferably 89% or more, still more preferably 90% or more, still more preferably 91% or more, and particularly preferably 92% or more.

The molded article comprising the PC-POS copolymer (A) of the present invention can be used as an optical member or a transparent member, and is suitably used for a flexible display, a light guide plate, a housing, a water/oil repellent film, an optical adhesive, a switch cover, a heat sealing agent, a waterproof material, a sealant, a connector, an adapter, a smartphone cover, a lens, a glasses/sunglasses component, an optical fiber component, a cushion material for a vehicle-mounted battery, a wiper blade, a curved mirror, a side view mirror, a rear view mirror, a lamp cover, a bumper, a window, an exterior material, an interior material, a sound absorbing material, a steering wheel cover, a sensor cover, a clock component, a stationery, a cosmetic container, a water tank for aquatic organism breeding, a shoe sole, a cup, a nail decoration, a toy, a fake bait, a suction cup, a steamer or other cooking equipment, clothing, a silicone wiper, a remote controller, At least 1 kind of umbrella, metal container inner lining, building material coating material, door, window, glass intermediate layer, tent, mirror, display cabinet, vinyl house, medical equipment shell, transfusion bag, transfusion tube, syringe, feeding bottle, gauze mask, face mask, filter part, shock absorption part, robot shell, unmanned aerial vehicle shell, shield, bulletproof shield, motion buffer material, airplane window, resin compatilizer, lighting cover, light guide plate, lighting unit, prism panel, flat lens, Fresnel lens, micro lens array and collimation lens.