Organopolysiloxane composition and its gel cured product
US5306797A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 5, 1993 |
| Grant date | Apr 26, 1994 |
| Priority date | — |
| Expiry date | Jan 5, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/20
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present organopolysiloxane composition comprises (A) an organopolysiloxane in which 5 to 30 mol % of the molecule ends is made up of an (R.sup.1).sub.3 Si.sub.0.5 unit and 95 to 70 mol % of the molecule ends is made up of at least one unit selected from the group consisting of an R.sup.1 (R.sup.2).sub.2 SiO.sub.0.5 unit, an (R.sup.1).sub.2 R.sup.2 SiO.sub.0.5 unit, and an (R.sup.2).sub.3 SiO.sub.0.5 unit, in which units R.sup.1 represent a vinyl group and R.sup.2 represents a hydrocarbon group excluding aliphatic unsaturated groups, (B) an organohydrogenpolysiloxane having two or more Si--H groups in the molecule, and (C) an addition reaction catalyst. By curing this composition, a gel cured product having high resistance to poisoning by solder fluxes can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.