Silicone resin compositions and molded products of silicone resins
US6750308B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2002 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | Oct 31, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F283/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to a silicone resin composition comprising a silicone resin and an unsaturated compound. This resin composition is formulated from a silicone resin which has in its structural unit cage type polyorganosilsesquioxane whose siloxy groups are linked to a triorganosilyl group represented by —Si(CH3)2—X (wherein X is —R1—OCO—CR2═CH2, —R1—CR2═CH2 or —CH═CH2, R1 is an alkyl group, an alkylidene group or phenylene group and R2 is a hydrogen atom or an alkyl group) and an unsaturated compound which contains an unsaturated group represented by —R3—CR4═CH2 or —CR4═CH2 (wherein R3 is an alkylene group, an alkylidene group or —OCO— group and R4 is a hydrogen atom or an alkyl group) at the weight ratio of the silicone resin to the unsaturated compound in the range of 1:99 to 99:1. The copolymer to be obtained from this silicone resin composition shows such excellent heat resistance and light transmission as to be capable of substituting for glass, low water absorption, high dimensional stability and good moldability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.