阅读说明：本技术 由tpu和聚酰胺组成的共混物 (Blends of TPU and polyamide ) 是由 O·S·赫兹 B·尼茨 T·朗格 于 2020-04-29 设计创作，主要内容包括：本发明涉及一种组合物,其包含至少一种热塑性聚氨酯(TPU-1)和共聚酰胺(PA-1),所述共聚酰胺(PA-1)通过聚合至少一种内酰胺和单体组合物(M)来制备,所述单体组合物(M)包含至少一种C32-C40二聚酸作为组分(B1)和至少一种C4-C12二胺作为组分(B2)。本发明还涉及制备这种组合物的方法以及涉及所述组合物用于生产中空制品的用途。(The invention relates to a composition comprising at least one thermoplastic polyurethane (TPU-1) and a copolyamide (PA-1), the copolyamide (PA-1) being prepared by polymerizing at least one lactam and a monomer composition (M) comprising as component (B1) at least one C32-C40 dimer acid and as component (B2) at least one C4-C12 diamine. The invention also relates to a method for producing such a composition and to the use of said composition for producing hollow articles.)

1. A composition comprising at least

(I) Thermoplastic polyurethane (TPU-1) and

(II) copolyamide (PA-1) prepared by polymerization of

(a) At least one lactam, and

(b) a monomer mixture (M) comprising:

(B1) at least one C32-C40 dimer acid and

(B2) at least one C4-C12 diamine.

2. The composition according to claim 1, wherein the thermoplastic polyurethane (TPU-1) is based on an aromatic diisocyanate.

3. The composition according to claim 2, wherein the thermoplastic polyurethane (TPU-1) has a shore hardness ranging from 70A to 85D, determined according to DIN 53505.

4. The composition according to claim 1, wherein the thermoplastic polyurethane (TPU-1) is based on an aliphatic diisocyanate.

5. The composition according to any of claims 1 to 4, wherein the proportion of thermoplastic polyurethane (TPU-1) in the composition is in the range from 5 to 95% by weight, based on the sum of components (I) and (II).

6. The composition according to any one of claims 1 to 5, wherein the proportion of copolyamide (PA-1) in the composition is in the range of 5 to 95% by weight, based on the sum of components (I) and (II).

7. The composition according to any one of claims 1 to 6, wherein the composition comprises at least one flame retardant selected from the group consisting of: melamine cyanurate, magnesium hydroxide and a phosphorus-containing flame retardant.

8. The composition according to any one of claims 1 to 7, wherein the composition comprises at least one first phosphorus-containing flame retardant (F1) selected from phosphoric acid derivatives and phosphonic acid derivatives and at least one further phosphorus-containing flame retardant (F2) selected from phosphinic acid derivatives.

9. The composition according to claim 8, wherein the phosphorus-containing flame retardant (F1) is a phosphinate.

10. The composition according to claim 9, wherein the phosphinate is selected from aluminum phosphinate or zinc phosphinate.

11. The composition according to any one of claims 8 to 10, wherein the phosphorus containing flame retardant (F2) is a phosphate ester.

12. The composition according to any one of claims 8 to 11, wherein the flame retardant (F1) is selected from resorcinol bis (diphenyl phosphate) (RDP), bisphenol a bis (diphenyl phosphate) (BDP) and diphenyl cresyl phosphate (DPK).

13. A process for producing a composition (Z-1) comprising the steps of

(a) Provide for

(I) Thermoplastic polyurethane (TPU-1) and

(II) copolyamides (PA-1) prepared by polymerizing at least one lactam and a monomer mixture (M) comprising component (B1) at least one C32-C40 dimer acid and component (B2) at least one C4-C12 diamine, and

(b) mixing the components (I) and (II).

14. Use of a composition according to any one of claims 1 to 12 for the production of shaped articles.

2. Preparation examples

The following table lists compositions in which the individual ingredients are expressed in parts by weight (PW). The mixtures were each produced with a Berstorff ZE 40A twin-screw extruder with a screw length of 35D and divided into 10 barrel sections (barrel sections). Granulation was carried out using standard underwater granulation equipment from gala (uwg).

Density, Shore hardness, tensile strength, tear resistance, abrasion and elongation at break were determined on a film having a thickness of 1.6 mm. The films were extruded using an Arenz single screw extruder with a three zone screw (screw ratio 1:3) with mixing section. The films were evaluated for their appearance.

UL 94V and HB flame tests were performed on 1.6mm films or 2mm injection molded plaques.

Modulus of elasticity, impact resistance and notched impact resistance were determined on injection molded test specimens. For this purpose, test specimens were produced on Arburg 520S with a screw diameter of 30 mm.

Burst pressure was measured on a hose having an outer diameter of 8.0mm and an inner diameter of 5.5 mm. The hose was extruded using a Kuhne single screw extruder with a three zone screw (screw ratio 1:3) with a mixing section.

The results are summarized in the following table.

2.1 example 1

Blends prepared from Elastollan 1180a10 and Ultramid RX 2298.

2.2 example 2

Blends prepared from Elastollan 1160D10 and Ultramid RX 2298.

2.3 example 3

Blends prepared from Elastollan 1178D11U and Ultramid RX 2298.

2.4 example 4

Blends prepared from Elastollan 1183D11U and Ultramid RX 2298.

Films of only one blend are available. In this case, the Shore hardness was determined on injection molding.

2.5 example 5

Blends prepared from Elastollan 685a10 and Ultramid RX 2298.

2.6 example 6

Blends prepared from Elastollan B60D11 and Ultramid RX 2298.

2.7 example 7

Blends prepared from Elastollan AC85a12 and Ultramid RX 2298.

2.8 example 8

Blends prepared from Elastollan L1160D12 and Ultramid RX 2298.

2.9 example 9

Blend prepared from Ultramid RX 2298, Exolit OP 1230 and Melamine cyanurate 15 ED.

2.10 example 10

Various exemplary blends prepared from Ultramid RX 2298, AC85A12, 1160D10, Exolit OP 1230, Fyrolflex RDP, melamine polyphosphate MC 200/70, and melamine cyanurate MC 15 ED.

2.11 example 11

Various exemplary blends prepared from Ultramid RX 2298, AC85A12, 1160D10, Exolit OP 1230, Fyrolflex RDP, melamine polyphosphate MC 200/70, and melamine cyanurate MC 15 ED.

Cited documents

EP 0 352 562 A1

DE 28 46 596 A1

WO 2018/050487 A1

EP 0 922 552 A1

DE 101 03 424 A1

WO 2006/072461 A1