Use of a pretreated precipitated silica as a reinforcing filler for silicon elastomer and the curable silicone elastomer compositions thus obtained by cold mixing
US8907001B2 · kind B2 · utility
1Cited by
2References
35Claims
0Family size
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Key dates
| Filing date | Aug 6, 2009 |
| Grant date | Dec 9, 2014 |
| Priority date | — |
| Expiry date | Aug 6, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K9/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to the use of a precipitated silica, pretreated by at least one organosilane hydrophobic compound or one hydrophobic silicone oil, as a reinforcing filler for silicone elastomer, the pretreated silica being incorporated in the silicone elastomer by cold mixing and having the following features: —a BET specific surface ranging from 50 to 450 m2/g, —a water wettability lower than 80, —a sulfur content lower than 0.1% by weight. The invention is directed to the curable silicone elastomer composition thus obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.