Polyimidesiloxane solution and method of coating substrates
US5317049A · kind A · utility
7Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1993 |
| Grant date | May 31, 1994 |
| Priority date | — |
| Expiry date | Jun 21, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31663
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed is a solution which comprises PA1 (a) a substantially fully imidized polyimidesiloxane; and PA1 (b) a solvent which comprises at least 50 wt % of a substituted pyrrolidone having the general formula ##STR1## where R is aliphatic or cycloaliphatic from C.sub.3 to C.sub.10. Also disclosed is a method of forming a coating on a substrate by applying the solution to the substrate and evaporating the solvent. Coatings formed from this solution are not subject to whitening as are coatings formed from the same polymers in other solvents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.