Process for the synthesis of soluble, condensed hydridosilicon resins containing low levels of silanol
US5010159A · kind A · utility
104Cited by
3References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1989 |
| Grant date | Apr 23, 1991 |
| Priority date | — |
| Expiry date | Sep 1, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to an improved method of hydrolyzing hydridosilanes with 2 or more hydrolyzable groups which comprises forming an arylsulfonic acid hydrate containing reaction medium, adding the silane to the hydrolysis medium, facilitating hydrolysis of the silane to form the polyester, settling the hydrolysis medium and polymer into an acid layer and an organic layer containing the polymer, separating the organic layer from the acid layer, contacting the organic layer with a neutralizing agent, and removing the neutrailizing agent from the organic layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.