Process for making polyamic esters
US5420232A · kind A · utility
7Cited by
7References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1992 |
| Grant date | May 30, 1995 |
| Priority date | — |
| Expiry date | Apr 29, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/1007
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to an improved process for making polyamic ester comprising reacting an aromatic diester diacid halide with the monohydrohalide salt of an aromatic diamine in the presence of a base. The polyamic ester can be imidized to form a polyimide suitable for use in electronic components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.