Process for the production of a random copolymer containing repeating polyimide units and repeating polyetherimide units
US4680373A · kind A · utility
49Cited by
10References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 27, 1986 |
| Grant date | Jul 14, 1987 |
| Priority date | — |
| Expiry date | May 27, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/1071
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a process for the production of random copolymers containing repeating polyimide units and repeating polyetherimide units. The process is a reverse addition process and utilizes at least two dianhydrides of varying reactivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.