Organosiloxane compositions and coatings, manufactured articles, methods and uses
US9926410B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2014 |
| Grant date | Mar 27, 2018 |
| Priority date | — |
| Expiry date | Nov 20, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J2483/005
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A release-modifier composition comprises a capped polydiorganosiloxane-(MQ resin) copolymer, which comprises a macromolecule having an MQ resin portion covalently bonded to a polydiorganosiloxane portion. An M unit typically has the formula R1SiO1/2 and a Q unit typically has the formula SiO4/2, wherein R1 is an independently selected substituent. The polydiorganosiloxane portion comprises two D segments coupled to each other via a (RV,Alkenyl)SiO2/2 unit, wherein RV is (C1-C6)hydrocarbyl. Alkenyl may be (C2-C6)alkenyl. Each D segment comprises two or more (RD)2SiO2/2 units, which independently may be the same as or different than each other. Each RD independently may be (C1-C6)alkyl, (C3-C6)cycloalkyl, or phenyl. A curable release-coating composition comprising or prepared from the release-modifier composition, cured release-coating composition, coatings comprising the same, manufactured articles, kits, methods and uses, are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.