Epoxy-aromatic polysiloxane compositions
US5049627A · kind A · utility
9Cited by
6References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 20, 1989 |
| Grant date | Sep 17, 1991 |
| Priority date | — |
| Expiry date | Nov 20, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L83/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition comprising a multifunctional glycidyl ether having at least three epoxy groups per molecule with a hardening amount of a mixture of a rigid aromatic diamine and an aromatic diaminopolysiloxane can be thermally cured to a compatible composition. Glycidylamines cannot be used in this composition. Optionally, a diglycidyl ether can be included. The cured compositions have higher glass transition temperatures than previously observed with epoxy/silicone systems. They also have improved resistance to atomic oxygen over that shown by epoxy formulations lacking a polysiloxane species therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.