Preparation of thermally stable copolyimidoamides containing diorganopolysiloxane recurring units
US4985527A · kind A · utility
2Cited by
1References
17Claims
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Key dates
| Filing date | Sep 19, 1989 |
| Grant date | Jan 15, 1991 |
| Priority date | — |
| Expiry date | Sep 19, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/455
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Thermally stable copolyimidoamides containing recurring diorganopolysiloxane structural units are improvedly prepared by directly interreacting, in a solvent medium: PA0 (i) a diisocyanate of the formula: ##STR1## (ii) a monoanhydride of a tricarboxylic acid of the formula: ##STR2## (iii) a siloxane diisocyanate of the formula: ##STR3##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.