Organosiloxane compositions
US7527870B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2004 |
| Grant date | May 5, 2009 |
| Priority date | — |
| Expiry date | Jan 1, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31663
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A moisture curable composition capable of cure to an elastomeric body, the composition comprising (a) an organopolysiloxane having not less than two silicon-bonded hydroxyl or hydrolyzable groups; (b) a silane of the general formula G2-Si—R12, wherein each group is reactable with the hydroxyl or hydrolyzable groups in (a), and each R1 group is an alkyl group having from 1 to 10 carbon atoms, an alkenyl group, an alkynyl group an aryl group or a fluorinated alkyl group; (c) one or more fillers and (d) a photocatalyst. Preferably at least one R1 group is unsaturated, but in the absence of this there is provided an additional component in the form of (e) an unsaturated compound selected from the group of an unsaturated short chain siloxane, an unsaturated cyclic siloxane, an unsaturated fatty acid an unsaturated fatty alcohol or an unsaturated fatty acid ester. The cured product is generally used as a sealant, which avoids dirt pick-up after cure and has a protective layer on the sealant interface with air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.