Silicone resin, process for producing the same, and curable resin composition comprising the same
US8796397B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2013 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | Aug 20, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/2533
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided are a silicone resin that yields a cured product excellent in flexibility, toughness, and heat resistance and high in transparency, a process for producing the said silicone resin, and a curable resin composition comprising the said silicone resin. The silicone resin is obtained by reacting an organopolysiloxane containing SiH groups represented by general formula (3) with an organopolysiloxane containing hydroxyl groups at both ends represented by general formula (5) and an alcohol containing radically reactive groups represented by general formula (6) in the presence of a hydroxylamine compound represented by general formula (4) as a catalyst and this silicone resin is used in formulating a curable resin composition. In the general formulas, R is an alkyl group of 1-12 carbon atoms optionally containing an oxygen atom or an aryl group, R1 is an alkyl group, Y is a hydrocarbon group of 1-12 carbon atoms optionally containing an oxygen atom, Z is a (meth)acryloyl group, a vinyl group, or an allyl group, and n, s, m, and r are numbers respectively expressed as 0<n≦2,000, 0<s≦100, 0<m≦1,000, and 1<r≦6.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.