Polyamide-imide polymer and method for producing same

A polymer and polyamide technology, applied in the field of polyamide-imide polymers, can solve problems such as danger, color, and use that affect the mechanical properties of polymers, and achieve the effect of improving solubility and low yellowness index

Pending Publication Date: 2022-04-15
SOLVAY SPECIALTY POLYMERS USA LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Second, some solvents are toxic and thus dangerous to humans and the environment
Third, polymers often contain residual amounts of solvents, which can sometimes affect the mechanical properties of the polymer or its use in certain applications, and in other cases, the solvent can cause color problems

Method used

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  • Polyamide-imide polymer and method for producing same
  • Polyamide-imide polymer and method for producing same
  • Polyamide-imide polymer and method for producing same

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Embodiment Construction

[0021] The object of the present invention is a process for the preparation of polyamide-imide (PAI) polymers by melt polymerizing at least one polyamide-imide (PAI) polymer comprising three carboxyl groups selected from the group consisting of carboxylic acid, anhydride and ester functional groups Part of the cycloaliphatic acid component and at least one diamine component, wherein the process includes the step of maintaining the reaction mixture in a homogeneous liquid state during polymerization at a temperature of at least 200°C.

[0022] The present invention also provides a colorless and transparent PAI polymer with low branching and good mechanical properties. Thus, such PAI polymers can be processed according to standard polymer processing techniques such as extrusion and injection molding. It can be converted into films and other articles.

[0023] In this specification, unless otherwise specified, the following terms have the following meanings.

[0024] The term "...

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Abstract

The invention relates to a method for preparing a polyamide-imide (PAI) polymer by melt polymerization of at least one alicyclic acid component comprising three carboxyl moieties selected from the group consisting of carboxylic acids, anhydrides and ester functions and at least one diamine component, the process comprises the step of maintaining the reaction mixture in a homogeneous liquid state during polymerization at a temperature of at least 200 DEG C.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Application No. 62 / 897,473, filed September 9, 2019, which is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates to polyamide-imide (PAI) polymers and a method for their manufacture. Background technique [0004] Polyamide-imide (PAI) is a high-performance polymer with excellent thermal, chemical and mechanical properties, and is therefore suitable for applications requiring high mechanical strength in combination with high temperature resistance, corrosion resistance and wear resistance, Applications with high demands on stiffness and low friction. For these reasons, they are widely used in the aerospace and automotive industries, insulation materials, coatings, solvent-resistant films and electronic devices. [0005] PAI is a polymer containing both amide and imide functional groups in the backbone. Therefor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/14
CPCC08G73/14C08G73/1003C08G73/1007
Inventor J·弗洛雷斯S·乔尔
Owner SOLVAY SPECIALTY POLYMERS USA LLC
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