Hydrolysis of diorganodichlorosilanes
US4772737A · kind A · utility
3Cited by
9References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1987 |
| Grant date | Sep 20, 1988 |
| Priority date | — |
| Expiry date | Oct 23, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/0874
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Admixtures of cyclic and linear diorganopolysiloxanes, relatively rich in cyclic species, are produced by hydrolyzing a diorganodichlorosilane, in an aqueous hydrochloric acid medium, in the presence of an effective amount of at least one amphoteric surface-active agent, characteristically at least one compound of the formula: ##STR1## The medium of hydrolysis is facilely separated into an aqueous phase and a cyclic oligomer-enriched siloxane phase essentially devoid of surfactant(s).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.