Patent · US Expired

Special polyimides as thermoplasts

US4908429A · kind A · utility

0Cited by

15References

6Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Wilfried Zecher · Leverkusen, DE
Dieter Arlt · Cologne, DE
Aziz E. Sayed · Leverkusen, DE

Key dates

Filing date	May 5, 1988
Grant date	Mar 13, 1990
Priority date	—
Expiry date	May 5, 2008

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G73/105
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

This invention relates to thermoplastic polyimides of 2,2-bis-phtalic acid anhydro-(4)-propane and 2,2-bis-(4-aminophenoxyphenyl-propane.

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