Film-forming organopolysiloxane composition
US5246995A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1991 |
| Grant date | Sep 21, 1993 |
| Priority date | — |
| Expiry date | Jul 11, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S528/901
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A film-forming organopolysiloxane composition is disclosed which imparts an excellent releaseability and lubricity to the surface of various types of rubber materials. The composition comprises a solvent dispersion of PA1 (a) 50 to 90 weight percent of a block organopolysiloxane copolymer; PA1 (b) 2 to 50 weight percent of a compound selected from the group consisting of an organosilane or a partial hydrolyzate thereof; PA1 (c) 4 to 40 weight percent of a mixture an epoxy group-containing organoalkoxysilane and an alkenyl group-containing organoacetoxysilane in a weight ratio of 1:9 to 9:1 or a condensation-reaction product thereof; PA1 (d) 0.1 to 10 weight percent of an hydroxy or alkoxy terminated diorganopolysiloxane; and PA1 (f) 0.1 to 10 weight percent of a condensation-reaction catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.