Silicon rubber composition having excellent durability in repeated mold release
US5342913A · kind A · utility
6Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1993 |
| Grant date | Aug 30, 1994 |
| Priority date | — |
| Expiry date | Sep 29, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/20
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An addition-curable type rubber composition comprising a vinyl-containing organopolysiloxane as a base polymer and, particularly, further comprising as a crosslinking agent an organohydrogenpolysiloxane which contains, in its molecule, at least one unit having the following formula: ##STR1## wherein J is an alkylene group of from 2 to 4 carbon atoms, Rf is a perfluoropolyether group, and a is an integer of from 0 to 2. The composition has excellent durability in repeated mold release, and a mold prepared from the composition is able to produce moldings of constant quality even when molding is repeated a large number of times.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.