Liquid silicone rubber composition of low specific gravity
US6297291A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2001 |
| Grant date | Oct 2, 2001 |
| Priority date | — |
| Expiry date | Feb 20, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2383/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is a low-specific-gravity liquid silicone rubber composition comprising PA1 (A) 100 parts by weight of diorganopolysiloxane which is liquid at room temperature and contains at least two silicon-bonded alkenyl groups in each molecule, PA1 (B) an organohydrogenpolysiloxane which has at least two silicon-bonded hydrogen atoms in each molecule at a mole ratio of silicone-bonded hydrogen atoms contained in this component (B) to silicon-bonded alkenyl groups contained in component (A) within a range of 0.3:1 to 5:1, PA1 (C) a platinum catalyst providing metallic platinum atoms in an amount of 0.1 to 500 parts by weight per 1,000,000 parts by weight of component (A) PA1 (D) 0.5 to 30 parts by weight of gas-filled hollow particles having shells made of a non-silicone thermoplastic resin, and PA1 (E) 0.05 to 10 parts by weight of gas-filled hollow particles having shells made of a thermoplastic silicone resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.