Organosilicone-treated silica and a composition containing it
US5200440A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1990 |
| Grant date | Apr 6, 1993 |
| Priority date | — |
| Expiry date | Oct 31, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An organosilicone-treated silica obtained by treating PA0 (A) a silica powder having a specific surface area of at least 50 m.sup.2 /g with PA0 (B) a triorgano(1-alkoxyvinyloxy)silane having the formula (I): ##STR1## wherein R.sup.1 is a monovalent hydrocarbon group or an ether linkage-containing organic group, and R.sup.2 are each a substituted or unsubstituted monovalent hydrocarbon group or an ether linkage-containing organic group. The invention also discloses an organopolysiloxane composition containing the organosilicone-treated silica and a process preparing the composition. The organosilicone-treated silica is of high quality, containing no substance with disagreeable smell or corrosiveness which has been by-produced heretofore. Hence, the composition containing the silica is free from pseudocrosslinking such as structuring or crepe hardening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.