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Semi-aromatic, semi-crystalline polyamide polymers and corresponding polymer compositions and articles

A technology of polymers and polyamides, applied in the field of polyamide polymer compositions and products, capable of solving problems such as low glass transition temperature

Pending Publication Date: 2021-08-31
SOLVAY SPECIALTY POLYMERS USA LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nonetheless, due to the relatively low glass transition temperatures of many semiaromatic, semicrystalline polyamide polymers, extending their use to higher thermal applications is challenging, especially where semiaromatic, semicrystalline polyamide polymers are required. In applications where polyamides maintain high modulus at elevated temperatures (e.g., 150°C or higher)

Method used

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  • Semi-aromatic, semi-crystalline polyamide polymers and corresponding polymer compositions and articles
  • Semi-aromatic, semi-crystalline polyamide polymers and corresponding polymer compositions and articles
  • Semi-aromatic, semi-crystalline polyamide polymers and corresponding polymer compositions and articles

Examples

Experimental program
Comparison scheme
Effect test

example

[0077] The following examples demonstrate the synthesis and thermal properties of polyamide polymers.

example 1

[0078] Example 1: Synthesis of PA 5,T / 1,3-BAC,T / 5,I / 1,3-BAC,I

[0079] This example demonstrates the synthesis of PA 5,T / 1,3-BAC,T / 5,I / 1,3-BAC,I(55 / 35 / 5 / 5). For clarity, in the general notation PA R′ PA1 / R' PA2 / … / R′ PAn (X 1 / X 2 / … / X n ), where R' PA1 to R' PAn is a repeating unit, X 1 to X n Indicates the relative number of moles of the corresponding repeat unit. For example, PA5,T / 1,3-BAC,T / 5,I / 1,3-BAC,I(55 / 35 / 5 / 5) contains 55mol% repeat unit 5,T; 35mol% repeat unit 1, 3-BAC,T; 5 mol% repeating unit 5,I; and 5 mol% repeating unit 1,3-BAC,I. Similar symbols are used below.

[0080] Molar equivalents of pentamethylenediamine, 1,3-bis(aminomethyl)cyclohexane, terephthalic acid, and isophthalic acid were charged to a stirred reactor and DI water (50 wt.%) was added . Phosphoric acid (120 ppm by weight equivalent of P) was used as an additive in the polymerization. As used herein, unless expressly stated otherwise, ppm means ppm by weight. The mixture was hea...

example 2

[0081] Example 2: Synthesis of PA 5,T / 1,4-BAC,T

[0082] This example demonstrates the synthesis of PA 5,T / 1,4-BAC,T(50 / 50). A similar procedure as described in Example 1 was followed using molar equivalents of pentamethylenediamine, 1,4-bis(aminomethyl)cyclohexane and terephthalic acid.

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Abstract

Described herein are polyamide polymers having improved glass transition temperatures ('Tg') and relatively small values of Tm-Tg, wherein Tm is the melting temperature of the polyamide polymer. The polyamide polymers are semi-aromatic, semi-crystalline polyamide polymers that include recurring units formed the polycondensation of (1) a linear aliphatic diamine and a cycloaliphatic diamine with (2) an aromatic dicarboxylic acid. Due at least in part to the improved Tg, the polyamide polymers can be desirably incorporated into application settings including, but not limited to, mobile electronic devices, automotive, aerospace, building and construction, oil and gas, industrial, electrical and electronics, consumer goods, medical and healthcare. Furthermore, the polyamide polymers have relatively small values of Tm-Tg and, therefore, articles including the polyamide polymers can be more efficiently produced due to relatively small cycle times.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Patent Application No. 62 / 795324, filed January 22, 2019, and European Patent Application No. 19157834.3, filed February 18, 2019, the entirety of each of these applications for all purposes The contents are incorporated herein by reference. technical field [0003] The present invention relates to semiaromatic, semicrystalline polyamide polymers having improved glass transition temperatures. The present invention also relates to polyamide polymer compositions and articles comprising these semicrystalline polyamide polymers. Background technique [0004] Semiaromatic, semicrystalline polyamide polymers are ideal for a wide range of applications. Due at least in part to their chemical resistance, high mechanical properties and dimensional stability, semi-aromatic, semi-crystalline polyamide polymers are ubiquitous, at least in mobile and automotive applications. N...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/26C08L77/06
CPCC08L77/06C08G69/265C08K3/32C08K2003/329
Inventor J·弗洛雷斯S·乔尔
Owner SOLVAY SPECIALTY POLYMERS USA LLC