Patent · US Active

Two-stage cure polyimide oligomers

US9631090B2 · kind B2 · utility

1Cited by

23References

6Claims

0Family size

Assignee

I.S.T. (MA) Corporation · US

Inventors

Gary L. Deets · Springfield, US
Jianming Xiong · Shanghai, CN

Key dates

Filing date	Jun 20, 2011
Grant date	Apr 25, 2017
Priority date	—
Expiry date	Sep 22, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2379/08
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A method for using citraconic anhydride and itaconic anhydride as addition cure end caps in reactions for forming polyamic acid oligomers and polyimide oligomers, is provided. Prepregs and high temperature adhesives made from the resulting oligomers, as well as, high temperature, low void volume composites made from the prepregs, are also provided.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.