Delivery system for releasing silicone ingredients

摘要

A solid composition for releasing active silicone ingredients contains a cationic polymer, an active silicone ingredient and optionally a thickener and a carrier. The cationic polymer is preferably a homopolymer or a copolymer. The cationic polymer has higher water solubility at neutral pH than at a basic pH of 9-11. Granular encapsulated compositions can be prepared by using the solid silicone-releasing composition as a component in a laundry detergent powder, tablet or bar. This is particularly of interest for the delivery of silicone ingredients in the rinse cycle of a laundry operation.

主权项

1. A solid silicone-releasing composition comprising (a) a cationic polymer which is cationic at pH 7, is a homopolymer or a copolymer prepared from monoethylenically unsaturated monomers and has a higher water solubility at neutral pH than at a basic pH of 9-11, and (b) an active silicone ingredient whereby said cationic polymer and said active silicone ingredient are mixed with each other prior to or during the formation of said solid silicone-releasing composition;
wherein said active silicone ingredient comprises siloxane units of the general formula RbR′cSiO4-b-c/2, where R is a hydrocarbon group; R′ is a functional group selected from an amine containing substituent, an amido containing substituent and a polyoxyalkylene containing substituent wherein said active silicone ingredient is substituted with either amino or amido functionality and polyoxyalkylene functionality in the same polymer; b is an integer with a value of from 0 to 2; c is an integer with a value of 1, 2, or 3; and b+c has a value of from 1 to 3; or said active silicone ingredient comprises a polyorganosiloxane fluid and a hydrophobic particulate filler.