Patent · US Expired

Polyimide derivatives having terminal acetylenic groups

US4316845A · kind A · utility

9Cited by
5References
18Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJan 25, 1980
Grant dateFeb 23, 1982
Priority date—
Expiry dateJan 25, 2000

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC08G73/14
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

Novel compositions comprising acetylenic polyimide-polyamides and processes for their preparation are disclosed herein. These new compositions are primarily derivatives of anhydride-terminated aromatic polyimides from which they are prepared by amidation to provide acetylenic amide groups having terminal --C.dbd.CH groups. These new compositions are more tractable than the original anhydride-terminated polyimides and can be converted at appropriate lower temperatures to crosslinked, insoluble, infusible polymers without by-product formation thereby extending greatly the applications for which the aromatic polyimides can be employed. Also included are monomeric compounds containing acetylenic amide groups derived from monomeric tetracarboxylic dianhydrides. These are particularly useful as crosslinking agents.

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