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US 2012/0237464 A1Published application
Hydrophilically-modified silicone compositions
AssigneeDow Corning Corporation
InventorsDongchan Ahn, Qi Huang, Maria M. Puscau, William Schulz, James Thompson, Kevin Wier
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Abstract
In various embodiments, provided are hydrophilically-modified silicone compositions comprising substantially spherical elastomeric microparticles, methods of making such compositions, and silicone pastes, personal care, and healthcare products comprising such silicone compositions.
Claims30
A method for the preparation of a silicone composition, the method comprising:
- (I) co-polymerizing Component (A), at least one organopolysiloxane having an average of at least two free radical polymerizable groups per molecule;
- and Component (B), at least one organic co-monomer having an average of at least one free radical polymerizable group per molecule;
- wherein co-polymerization occurs in the presence of Component (C), at least one organoborane free radical initiator;
- Component (D), at least one non-solvent that is immiscible with Component (A);
- optionally, Component (E), at least one organonitrogen-reactive compound;
- and oxygen, while maintaining a temperature of from about 5° C. to about 95° C. to form hydrophilically-modified silicone elastomeric microparticles;
- and
- (II) recovering the silicone elastomeric microparticles and dispersing them in at least one absorbable fluid to form a paste.
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A personal care product or healthcare product, comprising:
- a silicone paste prepared by a process comprising dispersing in at least one absorbable fluid, hydrophilically-modified silicone elastomeric microparticles prepared by a process comprising co-polymerizing Component (A), at least one organopolysiloxane having an average of at least two free radical polymerizable groups per molecule;
- and Component (B), at least one organic co-monomer having an average of at least one free radical polymerizable group per molecule;
- wherein co-polymerization occurs in the presence of Component (C), at least one organoborane free radical initiator;
- Component (D), at least one non-solvent that is immiscible with Component (A);
- optionally Component (E), at least one organonitrogen-reactive compound;
- optionally Component (F), at least one active ingredient suitable for use in personal care and healthcare products;
- optionally Component (G), at least one emulsifier;
- and oxygen while maintaining a temperature of from about 5° C. to about 95° C.
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Dependencies are inferred from the claim text.