High purity polysiloxane macromers and method for making the same
AssigneeGelest, Inc.
InventorsBarry C. ARKLES, Jonathan D. GOFF
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Abstract
A method of synthesizing a high purity acryloxyalkyldimethylchlorosilane involves (a) reacting an acrylate salt with a haloalkyldimethylalkoxysilane to form an acryloxy-substituted alkyldimethylalkoxysilane; and (b) displacing the alkoxy group in the acryloxy-substituted alkyldimethylalkoxysilane using a chloride-containing compound to form the acryloxyalkyldimethylchlorosilane. The acryloxyalkyldimethylchlorosilane, which may be used as an end-capper for AROP, has a purity of greater than about 99% and contains no detectable isomeric or hydrogenated impurities.
Claims27
An acryloxyalkyldimethylchlorosilane having a purity of at least about 99% and containing less than about 0.1 wt. % hydrogenated byproducts and less than about 0.1 wt. % isomeric byproducts.
A method of synthesizing a high purity acryloxyalkyldimethylchlorosilane comprising:
- (a) reacting an acrylate salt with a haloalkyldimethylalkoxysilane to form an acryloxy-substituted alkyldimethylalkoxysilane;
- and
- (b) displacing the alkoxy group in the acryloxy-substituted alkyldimethylalkoxysilane using a chloride-containing compound to form the acryloxyalkyldimethylchlorosilane.
A methacrylate-functional macromer or copolymer derived from an acryloxyalkyldimethylchlorosilane, wherein the macromer or copolymer has a purity of at least about 99%.
Dependencies are inferred from the claim text.