Abstract: A microemulsion is formed by combining (a) water, (b) a nonionic surfactant, a cationic surfactant, an anionic surfactant, or a mixture of such surfactants, (c) a linear non-volatile polysiloxane, (d) an amine functional polysiloxane, and (e) a carboxylic acid. The mixture is mechanically agitated until a microemulsion is obtained containing polysiloxane particles having an average diameter of less than 50 nanometer (0.05 micron/500 angstrom Å). These microemulsions are useful in paper coating, textile coating, and home care applications. They can also be used to deliver silicone polymers of tailored rheological properties to the human body.

Abstract: An amine-, polyol-, amide-, dimethyl-functional siloxane copolymer and a method for its preparation are disclosed. The copolymer is suitable for use in fiber treatment compositions. The copolymer provides good hand, resistance to yellowing, and hydrophilicity to fibers treated therewith.

Abstract: A fiber treatment composition is disclosed. The composition contains siloxanes having amine-, polyol-, functionalities. The composition provides good hand, resistance to yellowing, and hydrophilicity to the fibers. The composition is preferably formulated as an aqueous emulsion. Applying the composition to textile fabrics produces treated fabrics having good hydrophilicity, good hand, and resistance to yellowing.

Abstract: A fiber treatment composition is disclosed. The composition contains siloxanes having amine-, polyol, and amide-functionalities. The composition provides good hand, resistance to yellowing, and hydrophilicity to the fibers. The composition is preferably formulated as an aqueous emulsion. Applying the composition to textile fabrics produces treated fabrics having good hydrophilicity, good hand, and resistance to yellowing.

Abstract: There is disclosed a method for treating and protecting a substrate, said method comprising coating the surface of said substrate with a composition comprising a blend of(A) a polydimethylsiloxane polymer having a viscosity at 25.degree. C. of 5 to 100,000 cS; and(B) a polyisobutylene oligomer having a number average molecular weight of 200 to 550. The treatment imparts an aesthetically pleasing appearance to the surfaces of plastic, rubber or leather substrates whereby surface gloss is enhanced, but not excessively, as is the case for a comparable all-silicone treating agent.

Abstract: Method for homopolymerization of polyorganosiloxane macromonomers having acryloxy or methacryloxy groups. A miniemulsion of a methacryloxy functional polydimethylsiloxane macromonomer was prepared by mixing the macromonomer with a surfactant(s), and subjecting it to a high shear device. The macromonomer was polymerized in the miniemulsion by using a free radical initiator at high temperature. The amount of unreacted macromonomer is very low.

Abstract: Method of making copolymers of (i) an acrylic or methacrylic-functional polyisobutylene macromonomer, (ii) a polydiorganosiloxane macromonomer, and optionally (iii) a radical polymerizable monomer such as an alkyl acrylate or alkyl methacrylate. The copolymers are prepared by copolymerizing the monomers in a miniemulsion using a free radical initiator at high temperature. In the method, the monomers are mixed with a surfactant(s) and optionally a cosurfactant(s), and subjected to high shear.

Abstract: A composition is disclosed, said composition comprising(A) a polydimethylsiloxane having a viscosity greater than about 2 cS at 25.degree. C.; and(B) a polyisobutylene oligomer having a number average molecular weight of about 200 to about 2,300 and having at least one end terminated with a 2-methylpropenyl group.