Silicone elastomers by free radical mediated cure
US12234389B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2020 |
| Grant date | Feb 25, 2025 |
| Priority date | — |
| Expiry date | Mar 31, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J183/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Curable compositions of this disclosure comprise a mixture of: a silanol, a free radical initiator, an iodonium salt; and optionally an alkoxysilane, and/or an MQ resin, and/or (meth)acrylate monomer(s). In another aspect, cured compositions of this disclosure comprise: a cured silicone, a free radical initiator or residue thereof, an iodonium salt or residue thereof; and optionally a poly(meth)acrylate and/or an MQ resin, which may comprise the cured silicone. In another aspect, cured compositions of this disclosure comprise: a continuous phase of cured silicone, a discontinuous phase of poly(meth)acrylate inclusions, and optionally an MQ resin, which may comprise the cured silicone. The poly(meth)acrylate inclusions may have an average diameter of less than 1.0 micrometer or smaller. The compositions may be pressure sensitive adhesives. The curable and cured compositions may be solvent-free.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.