阅读说明：本技术 亲水性共聚物和膜 (Hydrophilic copolymer and film ) 是由 M·韦伯 K-U·肖宁 C·马莱茨科 于 2018-07-12 设计创作，主要内容包括：本发明涉及一种制备聚芳基醚砜-聚环氧烷嵌段共聚物(PPC)的方法通,过转化反应混合物(R<Sub>G</Sub>)来进行,所述反应混合物(R<Sub>G</Sub>)包括尤其是至少一种芳族二卤代砜、至少一种包含三甲基氢醌的二羟基组分以及至少一种聚环氧烷。本发明还涉及通过本发明的方法可获得的聚芳基醚砜-聚环氧烷嵌段共聚物(PPC),涉及其在膜(M)中的用途,以及涉及包含所述聚芳基醚砜-聚环氧烷嵌段共聚物(PPC)的膜(M)。此外,本发明还涉及一种制备膜(M)的方法。(The invention relates to a method for producing polyaryl ether sulfone polyalkylene oxide block copolymers (PPC) by converting a reaction mixture (R) G ) Is carried out, the reaction mixture (R) G ) Comprising inter alia at least one aromatic dihalosulfone, at least one dihydroxy component comprising trimethylhydroquinone and at least one polyalkylene oxide. The invention also relates to a polyaryl ether sulfone-polyalkylene oxide block copolymer (PPC) obtainable by the process of the invention, to the use thereof in membranes (M),and to a membrane (M) comprising said polyarylethersulfone-polyalkylene oxide block copolymer (PPC). The invention also relates to a method for producing the membrane (M).)

1. A process for preparing a polyarylethersulfone-polyalkylene oxide block copolymer (PPC) comprising the steps of:

I) conversion reaction mixture (R)_G) Which comprises the following components:

(A1) at least one aromatic dihalosulfone,

(B1) at least one aromatic dihydroxy component comprising trimethylhydroquinone,

(B2) at least one polyalkylene oxide,

(C) at least one carbonate component, wherein the carbonate component,

(D) at least one aprotic polar solvent.

2. The process according to claim 1, wherein component (a1) is selected from 4, 4 '-dichlorodiphenyl sulfone and 4, 4' -difluorodiphenyl sulfone.

3. The process of claim 1 or 2, wherein component (B1) comprises at least 50 mol% of trimethylhydroquinone, based on the total amount of component (B1).

4. The process according to any one of claims 1 to 3, wherein component (B2) comprises at least 50% by weight, based on the total weight of component (B2), of a polyalkylene oxide obtainable by polymerizing ethylene oxide, 1, 2-propylene oxide, 1, 2-butylene oxide, 2, 3-butylene oxide, 1, 2-pentylene oxide, 2, 3-pentylene oxide, tetrahydrofuran or a mixture of two or more of these monomers.

5. The process of any one of claims 1 to 4, wherein component (C) comprises at least 50 weight percent potassium carbonate, based on the total weight of component (C).

6. The process according to any one of claims 1 to 5, wherein component (D) is selected from the group consisting of N-methylpyrrolidone, N-dimethylacetamide, dimethylsulfoxide and dimethylformamide.

7. Polyaryl ether sulfone-polyalkylene oxide block copolymers (PPC) obtainable by the process according to any one of claims 1 to 6.

8. A membrane (M) comprising the polyarylethersulfone-polyalkylene oxide block copolymer (PPC) of claim 7.

9. The membrane (M) according to claim 8, wherein said membrane (M) is asymmetric.

10. The membrane (M) according to claim 8 or 9, wherein the membrane (M) is a porous or dense membrane.

11. Use of the polyarylethersulfone-polyalkylene oxide block copolymer (PPC) according to claim 7 in membranes (M).

12. A process for preparing a membrane (M) according to any one of claims 8 to 10, wherein said process comprises the following steps:

i) providing a solution (S) comprising a polyarylethersulfone-polyalkylene oxide block copolymer (PPC) and at least one solvent,

ii) separating said at least one solvent from said solution (S) to obtain a membrane (M).

13. The process according to claim 12, wherein the at least one solvent is selected from the group consisting of N-methylpyrrolidone, dimethylacetamide, dimethylsulfoxide, dimethylformamide, dimethyllactamide and sulfolane.

14. The process according to claim 12 or 13, wherein the solution (S) provided in step i) comprises 0.1 to 30 wt. -% of polyarylethersulfone-polyalkyleneoxide block copolymer (PPC), based on the total weight of the solution (S).

15. The process according to any one of claims 12 to 14, wherein the separation in step ii) is carried out by a phase inversion process.

Examples

The components used

DCDPS: 4, 4' -dichloro-diphenyl-sulfone,

TMH: the reaction mixture of the trimethyl hydroquinone and the tertiary amine,

DHDPS: 4, 4' -dihydroxydiphenyl sulfone in the presence of a catalyst,

polyethylene glycol 2000: m_n2004g/mol, determined by OH titration

PEO-PPO-PEO 5500：M_n5500g/mol, as determined by OH titration; 50% by weight of PPO

Potassium carbonate: k₂CO₃(ii) a No water is contained; the volume average particle diameter was 32.4 μm,

NMP: n-methyl pyrrolidone is added into the reaction kettle,

and (3) PESU: polyether sulfone

E 3010)

PVP: polyvinylpyrrolidone;

K40)

PEG: polyethylene glycol

DMAc: dimethylacetamide

General procedure

The viscosity number of the polymer was determined in a 1% NMP solution at 25 ℃.

The polymer was isolated by adding a solution of the polymer in NMP dropwise to demineralized water at room temperature (25 ℃). The height of the fall was 0.5m and the throughput was about 2.5L/h. The beads obtained were then extracted with water (water throughput 160L/h) at 85 ℃ for 20 h. The beads were dried under reduced pressure (< 100 mbar) at 150 ℃ for 24h (hours).

Number average molecular weight (M) was determined by GPC in DMAc/LiBr with PMMA (poly (methyl methacrylate)) standards_n) And weight average molecular weight (M)_w)。

Incorporation rates (incorporation ratios) of PEG and other polyether units and TMH by CDCl₃in/TMS¹H-NMR measurement. In this case, the signal intensity of the aliphatic PEG unit is considered to be related to the intensity of the aromatic unit of the polyaryl ether. This gives a value for the PEG moiety in mol%, which can be converted into weight% with the molar mass of the corresponding structural unit.

Water and from CDCl₃The contact angle between the surfaces of the solution-prepared membranes was obtained using a contact angle meter (droplet shape analysis system DSA 10MK 2 from Kr ü ss GmbH, Germany.) the smaller the contact angle, the higher the hydrophilicity of the membrane.