Method for the preparation of an aqueous emulsion of poly(silsesquioxane)
US4778624A · kind A · utility
33Cited by
8References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1986 |
| Grant date | Oct 18, 1988 |
| Priority date | — |
| Expiry date | Aug 15, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2383/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention provides a method for the preparation of a stable aqueous emulsion of a poly(silsesquioxane) without formation of gelled particles. In the method, a trialkoxysilane compound as the starting material is first emulsified in an aqueous medium containing a cationic surface active agent and a non-ionic surface active agent having a specified HLB value in the range from 16 to 20 in combination followed by the addition of an alkali catalyst and heating to effect hydrolysis and polycondensation of the trialkoxysilane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.