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Semi-aromatic-polyamide-based flexible composition, process for preparing same and uses thereof

A technology of semi-aromatic polyamide and composition, applied in the field of flexible composition, capable of solving problems such as harmful mechanical properties

Inactive Publication Date: 2014-08-20
ARKEMA FRANCE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason is that the irregular appearance of these outer surfaces of the extruded tube can have detrimental consequences for the mechanical properties of the tube

Method used

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  • Semi-aromatic-polyamide-based flexible composition, process for preparing same and uses thereof
  • Semi-aromatic-polyamide-based flexible composition, process for preparing same and uses thereof

Examples

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preparation example Construction

[0136] The invention also relates to a process for the preparation of the composition defined above. According to this method, the composition can be prepared by any method allowing to obtain a homogeneous mixture, such as extrusion in the molten state, compression, or roll milling.

[0137] More specifically, the composition of the present invention can be obtained by mixing in the molten state a semiaromatic polyamide, a plasticizer, and the products (A), (B) and optionally (C) used to form a crosslinked polyolefin. while preparing.

[0138] As far as optional additives and / or further polymers are concerned, they can be introduced simultaneously with the semiaromatic polyamide, the plasticizer, and the products (A), (B) and when appropriate (C), or they can be introduced in introduced in the next step.

[0139] Advantageously, said composition is obtainable in pellet form by compounding, in particular by means of a twin-screw extruder, a co-kneading device or an internal m...

Embodiment

[0160] Preparation of the composition

[0161] The compositions tested were prepared from the following products:

[0162] 11 / 10.T: Semi-aromatic polyamide, wherein the molar ratio of 11 / 10.T is 0.7, obtained by polycondensation of 11-aminocarboxylic acid, 1,10-decanediamine and terephthalic acid, with a temperature of 88°C Glass transition temperature Tg, melting temperature Tf of 260°C, intrinsic viscosity of 1.22 (measured according to standard ISO 307), and melting enthalpy of 47J / g

[0163] PA11: Homopolyamide obtained by polycondensation of 11-aminoundecanedioic acid comprising 100% bio-based carbon, having a melting temperature of 185° C., an intrinsic viscosity of 1.0-1.6 dl / g (determined according to standard ISO 307 ), and a fusion enthalpy of 60J / g

[0164] Lotader AX8900: Copolymer of ethylene, methyl acrylate and glycidyl methacrylate (Et / MA / GMA-68 / 24 / 8 by weight), equivalent to product (A)

[0165] Lotader 4700: Copolymer of ethylene, ethyl acrylate and male...

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Abstract

The present invention relates to a composition comprising: from 33 to 40% by weight of at least one crosslinked po-lyolef in obtained from at least one product (A) comprising an unsaturated epoxide and from at least one product (B) comprising an unsaturated carboxylic acid anhydride, from 3 to 10% by weight of at least one plasticizer, the rest being made up of at least one se-mi-aromatic polyamide, wherein the weight contents of (A) and (B), denoted respectively [A] and [B], are such that the [B] / [A] ratio is between 3 and 14. The present invention also relates to a process for preparing such a composition and also to the uses thereof.

Description

[0001] The present invention relates to a flexible composition comprising at least one semiaromatic polyamide, at least one crosslinked polyolefin and at least one plasticizer, a process for its preparation and its use, especially in various objects such as general consumer products such as use in the manufacture of electrical, electronic or automotive equipment, surgical instruments, packaging or sporting goods). Background technique [0002] In the automotive industry, for example, compositions based on one or more semiaromatic polyamides are increasingly used due to the remarkable thermomechanical properties such compositions impart to parts made therefrom. [0003] In order for the thermomechanical properties of these parts to be optimally adjusted, the semiaromatic polyamide-based composition from which these parts are produced may comprise one or more further polymers and / or additives. [0004] Document EP1505099A2 describes in particular polyamides comprising 60 to 99.5...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L23/08C08L33/06B32B27/34B32B27/30
CPCC08L23/0884C08L33/068B32B27/34B32B2307/306C08L2205/22F16L9/12Y02T10/88B60H1/00B32B1/08B32B2307/558C08L77/06B32B2597/00B32B27/22B32B2605/08B32B27/308B32B27/30B32B2270/00C08L33/064B32B2307/714B32B2307/546C08L23/0869B32B2307/538C08K2201/014C08L2203/18C08L2205/035C08L2205/03C08L2205/025C08L2201/08C08K13/02C08K5/435C08K5/18C08K3/16C08L77/02C08K5/0016C08L77/00Y10T137/0318C08L2666/06C08L2666/04
Inventor P.布隆德尔C.凯尔米奥克斯
Owner ARKEMA FRANCE SA
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