Solid silica derivative and process for producing the same
US5985229A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1996 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Sep 17, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2004/64
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A solid silica derivative which is represented by the general formula H.sub.n SiO.sub.(4-n)/2 wherein n is a real number larger than 0 but smaller than 2 and which contains Si--H bond, said solid silica derivative being able to be easily produced in a high yield by subjecting to hydrolysis-condensation an alkoxysilane represented by the mean general formula H.sub.n --Si(OR.sup.0).sub.4-n in which R.sup.0 represents an alkyl group having 1 to 4 carbon atoms, plural R.sup.0 groups may be the same as or different from one another and n is a real number greater than 0 but smaller than 2, using water in an amount of (4-n)/2 moles or more per mole of the alkoxysilane at a pH of 10.5 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.