Method of preparing silicon compositions
US4987169A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1989 |
| Grant date | Jan 22, 1991 |
| Priority date | — |
| Expiry date | Apr 21, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2050/10
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A method of preparing a uniform silicone composition, comprising treating under the application of a shearing force a polymeric product obtained by addition polymerization of (A) an organhydrogenpolysiloxane containing in its molecule from 1.5 to 5 silicon-bonded hydrogen atoms on average, said silicon-bonded hydrogen atoms being in an amount of from 1 to 20 mol %, based on the total of the silicon-bonded hydrogen atoms and silicon-bonded organic groups in the molecule; and (B) an organopolysiloxane containing in its molecule from 1.5 to 5 silicon-bonded aliphatic unsaturated groups on average; in the presence of from 10 to 1,000 parts by weight of low-viscosity silicone oil having a viscosity of not more than 100 cSt at 25.degree. C. based on 100 parts by weight of the total amount of said (A) and (B).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.