Abstract: Polyheterosiloxane compositions are disclosed containing at least 70% by weight of the following components: (A) a first metal (M1) selected from Ti, Zr, or Zn, (B) a second metal (M2) selected from a non-lanthanide metal, (C) siloxy units having the formula R2SiO2/2 or R?SiO3/2, where R? is independently a hydrocarbon group or halogen substituted hydrocarbon group containing 1 to 18 carbon atoms. The disclosed compositions are useful to prepare high refractive index materials.

Abstract: Polyheterosiloxane compositions are disclosed containing at least 70% by weight of the following components: (A) a first metal (M1) selected from Ti, Zr, or Zn, (B) a second metal (M2), Zn, Cu, Bi, or Ag with the proviso that the second metal is not the same as the first metal, (C) siloxy units having the formula R?2SiO2/2 or R?SiO3/2 where R? is independently a hydrocarbon group or halogen substituted hydrocarbon group containing 1 to 18 carbon atoms. The disclosed compositions are useful to prepare antimicrobial materials.

Abstract: Polyheterosiloxane compositions are disclosed containing at least 70% by weight of the following components: (A) a first metal (M1) selected from Ti, Zr, or Zn, (B) a second metal (M2) selected from a non-lanthanide metal, (C) siloxy units having the formula R2SiO2/2 or R?SiO3/2, where R? is independently a hydrocarbon group or halogen substituted hydrocarbon group containing 1 to 18 carbon atoms. The disclosed compositions are useful to prepare high refractive index materials.

Abstract: This invention relates to methods for preparing metal nanoparticle-containing silicone compositions, such as silver nanoparticle-containing compositions. The metal nanoparticles are prepared by reducing a soluble metal salt with an SiH-containing material or other reducing material in an organic solvent. Silicone materials are added either before or after addition of the reducing agents. The organic solvent is then removed.

Abstract: A process for the preparation of a sulfidosilane comprising reacting an aqueous phase comprising a sulfide compound, which is a polysulfide of the formula M2Sx and/or a mixture of sulfur with a hydrosulfide of the formula MHS or a sulfide of the formula M2Sn, where M represents ammonium or an alkali metal, x is defined as above and n has an average value of 1 to 10, with a silane mixture of an alkoxydialkylhaloalkylsilane of the formula (R?O)R2Si-A-Z and a hydroxydialkylhaloalkylsilane of the formula (HO)R2Si-A-Z, where each R is selected from alkyl or aryl groups having 1 to 18 carbon atoms, each A independently represents the same or different divalent organic group having 1 to 18 carbon atoms, R? represents an alkyl group having 1 to 8 carbon atoms and Z represents a halogen selected from chlorine, bromine and iodine.

Abstract: A process for the preparation of a sulfidosilane comprising reacting an aqueous phase comprising a sulfide compound, which is a polysulfide of the formula M2Sx and/or a mixture of sulfur with a hydrosulfide of the formula MHS or a sulfide of the formula M2Sn, where M represents ammonium or an alkali metal, x is defined as above and n has an average value of 1 to 10, with a silane mixture of an alkoxydialkylhaloalkylsilane of the formula (R?O)R2Si-A-Z and a hydroxydialkylhaloalkylsilane of the formula (HO)R2Si-A-Z, where each R is selected from alkyl or aryl groups having 1 to 18 carbon atoms, each A independently represents the same or different divalent organic group having 1 to 18 carbon atoms, R? represents an alkyl group having 1 to 8 carbon atoms and Z represents a halogen selected from chlorine, bromine and iodine.

Abstract: Compositions useful for providing water repellent characteristics to substrates contain (i) 0.1-99 percent by weight of a methylhydrogensiloxane; (ii) 0.1-99 percent by weight of a silanol endblocked siloxane; (iii) 0.1-99 percent by weight of a silicone resin; (iv) 0.1-10 percent by weight of at least one surface active agent; and (v) 0.01-5 percent by weight of at least one additive selected from the group consisting of a preservative, an antifoam, a mildewcide, a UV absorber/UV light stabilizer, and a freeze-thaw additive. The balance of the composition to 100 percent by weight is water.

Abstract: A sulfidosilane of the formula wherein each R, which may be the same or different, represents an alkyl or aryl group having 1 to 18 carbon atoms, R? represents an alkyl, hydroxyalkyl, or alkoxyalkyl group having 1 to 8 carbon atoms, each A independently represents the same or different divalent organic group having 1 to 18 carbon atoms and x has a value in the range 2 to 10 . . . . A coupling agent composition comprising sulfidosilanes of the formula Y?Y2Si-A-Sx-A-SiY2Y? wherein each Y is selected from alkyl or aryl groups having 1 to 18 carbon atoms and alkoxy groups having 1 to 8 carbon atoms, each Y? is selected from hydroxyl or alkoxy, hydroxyalkoxy, or alkoxyalkoxy groups having 1 to 8 carbon atoms, each A independently represents the same or different divalent organic group having 1 to 18 carbon atoms and x has an average value in the range 2 to 5 characterized in that the average number of alkoxy groups per sulfidosilane molecule is less than 2 and at least 0.

Abstract: The present invention relates to a method of making silicone release coating compositions comprising mixing a vinyl functional organopolysiloxane, an organohydrogensilicon compound, a platinum group metal-containing catalyst, and certain silylated acetylenic inhibitors.