Abstract: A vinylester-functional organosilicon compound is prepared. The vinylester-functional organosilicon compound can be prepared by a process including hydroformylation of an alkenyl-functional organosilicon compound to produce an aldehyde-functional organosilicon compound, oxidation of the aldehyde-functional organosilicon compound to produce a carboxy-functional organosilicon compound, and transvinylation of the carboxy-functional organosilicon compound to produce the vinylester-functional organosilicon compound.

Abstract: A silicone-vinylester copolymer and methods for its preparation and use are provided. The silicone-vinylester copolymer can be made using a vinylester-functional siloxane macromonomer, which can be prepared by a process comprising hydroformylation of an alkenyl-functional polyorganosiloxane to form an aldehyde-functional polyorganosiloxane; oxidation of the aldehyde-functional polyorganosiloxane to form a carboxy-functional polyorganosiloxane, and transvinylation of the carboxy-functional polyorganosiloxane to form the vinylester-functional siloxane macromonomer. The silicone-vinylester copolymer is useful in personal care compositions.

Abstract: Provided are a vinyl-modified organopolysiloxane useful as a raw material for radical polymerization reactions, especially for biodegradable polymers or copolymers, as well as a method for producing the same. A radical polymerizable polymer or radical polymerizable copolymer in which the vinyl-modified organopolysiloxane is at least a portion of the starting raw material, as well as uses thereof and a method of production, are also provided. A vinyl-modified organopolysiloxane having two or more vinyl-modified groups (RAc) expressed by —R1—C(?O)—O—CH?CHR2 here R1 is a divalent organic group having 4 to 20 carbon atoms, R2 is a hydrogen atom or a methyl group) bonded to a silicon atom in the molecule and having a polyorganosiloxane structure; a radical polymerizable polymer or radical polymerizable copolymer, especially silicone elastomer particles made therefrom; and use thereof.

Abstract: Provided are silicone elastomer particles having a crosslinked structure which is active with respect to biodegradability, and can provide texture and feel during use that is equal to or higher than conventional silicone elastomer particles when blended in a cosmetic composition or the like, a reactive group-containing polycaprolactone compound having a specific structure and useful as a raw material for synthesis reactions, and a method for producing the same. A polycaprolactone compound containing a reactive group having two or more modified polycaprolactone structures has the structural formula (1) as described herein, where in the formula, n is a number in the range 1 to 5 and Ra is a specific (meth)acryl terminal group or alkenyl terminal group, specifically, a compound selected from the aforementioned (meth)acryl-modified polycaprolactone compounds and alkenyl-modified polycaprolactone compounds.