Methods of preparing polyimides and polyimide precursors
US4296208A · kind A · utility
27Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1980 |
| Grant date | Oct 20, 1981 |
| Priority date | — |
| Expiry date | Sep 12, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2379/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods of preparing polyimides and polyimide precursors from liquid resins containing tetracarboxylic acid esters and primary diamines which involve spray drying the resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.