Polyimide, polyimide powder, polyimide coatings, and polyimide films

A polyimide synthesized from specific diamine and tetracarboxylic acid dianhydride compounds provides solvent solubility, heat resistance, and mechanical properties, overcoming the limitations of PFAS materials by avoiding fluorine-containing groups and enhancing compatibility with reactive functional groups.

TW202631817APending Publication Date: 2026-08-01KAWAMURA SANGYO KK
0 Cites 0 Cited by

Patent Information

Application Number
TW114147741
Authority / Receiving Office
TW · TW
Patent Type
Applications
Current Assignee / Owner
Priority Date
2025-11-25
Filing Date
2025-12-05
Publication Date
2026-08-01

AI Technical Summary

Technical Problem

Existing polyimides contain trifluoromethyl or difluoromethylene groups, classified as PFAS materials, and lack compatibility with reactive functional groups, necessitating a polyimide that is solvent-soluble and exhibits excellent mechanical and heat-resistant properties without these groups.

Method used

A polyimide synthesized from specific diamine and tetracarboxylic acid dianhydride compounds, forming a film with excellent heat resistance, transparency, and mechanical properties, and compatibility with compounds like polyfunctional acrylates, without using fluorine-containing groups.

Benefits of technology

The polyimide achieves solvent solubility, excellent heat resistance, transparency, and mechanical properties, while maintaining compatibility with reactive functional groups, addressing the limitations of PFAS materials.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The objective of this invention is to provide polyimide and its powder, as well as coatings using the polyimide, which can form polyimide films with excellent heat resistance, transparency, and mechanical properties, and are soluble in organic solvents and have excellent compatibility with compounds having reactive functional groups. The present invention provides a polyimide synthesized from a diamine compound and a tetracarboxylic dianhydride, characterized in that the aforementioned polyimide comprises: constituent units derived from (a) the diamine compound shown in Formula 1, (b) the carboxyl-containing diamine compound shown in Formula 2, and (c) 3,3',4,4'-diphenyl ether tetracarboxylic dianhydride (Formulas 1 and 2 are as defined in this specification), wherein the amount of constituent units derived from (a) is 60-95 mol% relative to the total mol% of constituent units derived from the diamine compound, and the amount of constituent units derived from (b) is 5-30 mol%, and the amount of constituent units derived from (c) is mol% or more relative to the total amount of constituent units derived from the tetracarboxylic dianhydride.
Need to check novelty before this filing date? Find Prior Art