Functionalization of silicones and anti-adhesive coatings made therefrom
US7205372B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2004 |
| Grant date | Apr 17, 2007 |
| Priority date | — |
| Expiry date | Apr 30, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/0879
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Organosilicon compounds having at least one ≡SiH unit per molecule are functionalized via heterogeneous catalysis into, for example, epoxidized POS by hydrosilylation between an ethylenically unsaturated epoxide such as VCMX and a hydrogenated POS of the MDD′M type with M=R3SiO1/2, D=R2—SiO2/2, D′=RH=SiO2/2, in which R=alkyl, and wherein the viscosity of the final product is controlled, i.e., to limit the parasitic reactions of cationic polymerization by opening of heterocycles, resulting in partial or total gelling of the reaction mixture, said hydrosilylation characteristically being carried out in the presence of at least one inorganic non-nucleophilic base and, optionally, water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.