Polyimide copolymers containing 4,4'-bis(p-aminophenoxy)biphenyl and siloxane diamine moieties
US4960846A · kind A · utility
6Cited by
8References
10Claims
0Family size
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Key dates
| Filing date | Mar 9, 1990 |
| Grant date | Oct 2, 1990 |
| Priority date | — |
| Expiry date | Mar 9, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/455
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A low modulus, solvent resistant, wet etchable polyimide useful electronic applications as passivation and insulating coatings, said polyimides containing a 4,4'-bis(p-aminophenoxy)biphenyl moiety, a siloxane diamine moiety, and a dianhydride moiety.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.