Fully substituted cyclopolysiloxanes and their use for making organosilicon polymers
US5334688A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 19, 1993 |
| Grant date | Aug 2, 1994 |
| Priority date | — |
| Expiry date | Apr 19, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K3/285
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed are organosilicon crosslinked polymers and crosslinkable prepolymers that are the reaction product of (a) a cyclic polysiloxane in which each silicon atom is substituted with (i) a saturated, substituted or unsubstituted alkyl or alkoxy group or a substituted or unsubstituded aryl or aryloxy group, and (ii) a substituted or unsubstituted hydrocarbon group having at least one carbon-carbon double bond that is reactive in hydrosilation, (b) at least one organosilicon compound having at least two .tbd.SiH groups, and optionally (c) a hydrocarbon polyene having at least two nonaromatic carbon-carbon double bonds that are reactive in hydrosilation. A process for preparing the polymers and prepolymers and for preparing the cyclic polysiloxanes is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.