Siloxane MQ resin vesicles and entrapment

A method of entrapping a water-insoluble substance in a vesicle formed from a surface active siloxane comprising forming a mixture by combining the water-insoluble substance and a surface active siloxane, and agitating the mixture, the surface active siloxane consisting essentially of tetravalent SiO.sub.2 units and monovalent R.sub.3 SiO.sub.1/2 and R'R.sub.2 SiO.sub.1/2 units, the ratio of monovalent units to tetravalent units being from 0.4/1 to 2/1, and from 40 to 90% of all monovalent units being R'R.sub.2 SiO.sub.1/2 units, wherein R denotes a monovalent hydrocarbon group having up to 8 carbon atoms, and R' denotes a polyoxyalkylene group terminated by a hydroxyl group, an alkyl group, an aryl group, or an acyl group.

A composition comprising a water-soluble substance entrapped in vesicles where the vesicles comprise 1-99.7 percent by weight of a surface active siloxane, and 0.3-99 percent by weight of the water-soluble substance, the surface active siloxane consisting essentially of tetravalent SiO.sub.2 units and monovalent R.sub.3 SiO.sub.1/2 and R'R.sub.2 SiO.sub.1/2 units, the ratio of monovalent units to tetravalent units being from 0.4/1 to 2/1, and from 40 to 90% of all monovalent units being R'R.sub.2 SiO.sub.1/2 units, wherein R denotes a monovalent hydrocarbon group having up to 8 carbon atoms, and R' denotes a polyoxyalkylene group terminated by a hydroxyl group, an alkyl group, an aryl group, or an acyl group.

A composition comprising a water-insoluble substance entrapped in vesicles where the vesicles comprise 1-99.7 percent by weight of a surface active siloxane, and 0.3-99 percent by weight of the water-insoluble substance, the surface active siloxane consisting essentially of tetravalent SiO.sub.2 units and monovalent R.sub.3 SiO.sub.1/2 and R'R.sub.2 SiO.sub.1/2 units, the ratio of monovalent units to tetravalent units being from 0.4/1 to 2/1, and from 40 to 90% of all monovalent units being R'R.sub.2 SiO.sub.1/2 units, wherein R denotes a monovalent hydrocarbon group having up to 8 carbon atoms, and R' denotes a polyoxyalkylene group terminated by a hydroxyl group, an alkyl group, an aryl group, or an acyl group.