Abstract: A polydiorganosiloxane having both a silicon bonded aliphatically unsaturated group and a silicon bonded poly(meth)acrylate polymer or copolymer, and method for preparation of this polydiorganosiloxane are disclosed. The method preserves the aliphatically unsaturated groups when grafting the poly(meth)acrylate to the polydiorganosiloxane. This polydiorganosiloxane is useful in hydrosilylation reaction curable compositions, such as pressure sensitive adhesive compositions.

Abstract: An aryl group-containing siloxane composition is formed by introducing an alkaline earth-metal as a part of the reaction product of an organopolysiloxane having at least two alkenyl groups per molecule and an organopolysiloxane having at least two silicon-bonded hydrogen atoms per molecule in the presence of a hydrosilylation catalyst, wherein at least one of the organopolysiloxanes includes an aryl group. The alkaline earth metal may be introduced via a heat stability composition or may alternatively be pre-reacted with the organopolysiloxane having at least two alkenyl groups per molecule. The aryl group-containing siloxane compositions may be utilized as an encapsulating layer for a light emitting device.

Abstract: An aryl group-containing siloxane composition is formed by introducing an alkaline earth-metal as a part of the reaction product of an organopolysiloxane having at least two alkenyl groups per molecule and an organopolysiloxane having at least two silicon-bonded hydrogen atoms per molecule in the presence of a hydrosilylation catalyst, wherein at least one of the organopolysiloxanes includes an aryl group. The alkaline earth metal may be introduced via a heat stability composition or may alternatively be pre-reacted with the organopolysiloxane having at least two alkenyl groups per molecule. The aryl group-containing siloxane compositions may be utilized as an encapsulating layer for a light emitting device.

Abstract: Provided in various embodiments are methods of loading solid microparticles and nanoparticles of silver, including silver-based compounds, on silicone particles to surface modify the silicone particles. The silver-loaded microparticles and silver-loaded nanoparticles can be dispersed or loaded into silicones for use in antimicrobial and other applications.

Abstract: Solid compositions of organosiloxane block copolymers are disclosed having a tensile strength greater than 1.0 MPa and a % elongation at break greater than 40%. The organosiloxane block copolymers comprise: 40 to 90 mole percent disiloxy units of the formula [R12SiO2/2] 10 to 60 mole percent trisiloxy units of the formula [R2SiO3/2] 0.5 to 35 mole percent silanol groups [?SiOH] where R1 is independently a C1 to C30 hydrocarbyl, R2 is independently a C1 to C20 hydrocarbyl, wherein; the disiloxy units [R12SiO2/2] are arranged in linear blocks having an average of from 10 to 400 disiloxy units [R12SiO2/2] per linear block, the trisiloxy units [R2SiO3/2] are arranged in non-linear blocks having a molecular weight of at least 500 g/mol, and at least 30% of the non-linear blocks are crosslinked with each other, each linear block is linked to at least one non-linear block, and the organosiloxane block copolymer has a molecular weight (Mw) of at least 20,000 g/mole.

Abstract: This invention relates to a coating composition comprising (A) 100 weight parts of at least one epoxy resin; (B) 40 to 900 weight parts of at least one alkoxy-containing aminofunctional silicone resin; (C) up to 50 weight parts of at least one organic hardener; (D) up to 100 weight parts of at least one epoxyfunctional silicone resin; and (E) up to 10 weight parts of at least one cure accelerator, provided the alkoxy-containing aminofunctional silicone resin (B) has a total alkoxy content ranging from 26 to 80 mol percent per mole of silicon (Si) in the alkoxy-containing aminofunctional silicone resin. Methods for preparing the above-described composition and for treating substrates are also disclosed.

Abstract: A polyheterosiloxane composition includes (A) a first metal (M1), (B) a second metal (M2), and (C) siloxy units having the formula (R13SiO1/2), (R12SiO2/2), (R1SiO3/2), and/or (S1O4/2). R1 is independently a hydrocarbon or halogenated hydrocarbon group including 1 to 30 carbon atoms. The mole fractions of (A), (B), and (C) relative to each other is of the formula [(M1)]a[(M2)]b[R13SiO1/2]m[R12SiO2/2]d[R1SiO3/2]t[SiO4/2]q, wherein a and b are each independently from 0.001 to 0.9, each of m, d, t, and q are independently from zero to 0.9 so long as m, d, t, and q are not all zero and the sum of a+b+m+d+t+q?1. At least one of (M1) and (M2) is a lanthanide metal. The composition exhibits a quantum yield of at least 0.05% and is formed using a method including reacting (A?) a metal (M3) alkoxide, (B?) an optional hydrolyzable metal (M4) salt, (C?) a silicon-containing material and (D) water.

Abstract: Solid compositions of organosiloxane block copolymers are disclosed having a tensile strength greater than 1.0 MPa and a % elongation at break greater than 40%. The organosiloxane block copolymers comprise: 40 to 90 mole percent disiloxy units of the formula [R12SiO2/2] 10 to 60 mole percent trisiloxy units of the formula [R2SiO3/2] 0.5 to 35 mole percent silanol groups [?SiOH] where R1 is independently a C1 to C30 hydrocarbyl, R2 is independently a C1 to C20 hydrocarbyl, wherein; the disiloxy units [R12SiO2/2] are arranged in linear blocks having an average of from 10 to 400 disiloxy units [R12SiO2/2] per linear block, the trisiloxy units [R2SiO3/2] are arranged in non-linear blocks having a molecular weight of at least 500 g/mol, and at least 30% of the non-linear blocks are crosslinked with each other, each linear block is linked to at least one non-linear block, and the organosiloxane block copolymer has a molecular weight (Mw) of at least 20,000 g/mole.

Abstract: This invention relates to new blocked isocyanate silicone resins which can be used to make shelf stable one part curable coating compositions. These coatings do not cure until heated. The coatings provide weather resistant protection for numerous substrates including automobile exteriors, leather fabric, electronic components, wood floors and surfaces.

Abstract: This invention relates to thermoplastic elastomers comprising at least one silicone ionomer. These thermoplastic elastomers may be reprocessed and/or recycled.

Abstract: The present invention relates to a curable rubber composition comprising an organic elastomer, a filler and at least one curing agent for the elastomer. Such curable rubber compositions are widely used in the production of cured rubber articles, such as tires, belts and hoses. The composition contains a branched silicone resin having Si-bonded hydroxyl groups or azo groups. This may lead to a reduction in the mixing energy required for processing, particularly in the energy required in the first (non-productive) mixing phase to give good dispersion of the filler in the organic elastomer. Use of the branched silicone resin can also accelerate cure (vulcanization), thus reducing the required cure time or reducing the amount of cure accelerator required.

Abstract: Personal care composition having improved compatibility and providing improved sun protection are obtained by including a liquid silicone resin having greater than 50 mole percent Me3SiO1/2 and PrSiC3/2 units, where Me is methyl and Pr is propyl in the composition. If desired to enable additional compatibility of ingredients comprising the personal care composition, the liquid silicone resin can also contain PhSiO3/2 or Ph2SiO2/2 units, where Ph is phenyl, or a mixture thereof.

Abstract: A pressure sensitive adhesive composition includes (A) a bodied MQ resin containing (i) a resinous core and (ii) a nonresinous polyorganosiloxane group, where the nonresinous polyorganosiloxane group is terminated with a silicon-bonded hydroxyl group; (B) a treated MQ resin, where (B)/(A) ratio has a value of 0.3 to 5.0, and (C) a polydiorganosiloxane terminated with a condensation reactable group; where resin/polymer ratio has a value of 2.0 to 3.0; optionally (D) a crosslinker; optionally (E) a catalyst; and optionally (F) a solvent. A pressure sensitive adhesive product prepared by curing the pressure sensitive adhesive composition is useful in structural attachment applications such as structural glazing applications.

Abstract: This invention relates to a coating composition comprising (A) 100 weight parts of at least one epoxy resin; (B) 40 to 900 weight parts of at least one alkoxy-containing aminofunctional silicone resin; (C) up to 50 weight parts of at least one organic hardener; (D) up to 100 weight parts of at least one epoxyfunctional silicone resin; and (E) up to 10 weight parts of at least one cure accelerator, provided the alkoxy-containing aminofunctional silicone resin (B) has a total alkoxy content ranging from 26 to 80 mol percent per mole of silicon (Si) in the alkoxy-containing aminofunctional silicone resin. Methods for preparing the above-described composition and for treating substrates are also disclosed.

Abstract: A structural adhesive tape includes a closed cell silicone foam support and a structural adhesive composition on opposing sides of the closed cell silicone foam support. The structural adhesive composition may be a condensation reaction curable pressure sensitive adhesive composition. The structural adhesive tape is useful in structural glazing applications, such as curtain wall applications.

Abstract: Personal care composition having improved compatibility and providing improved sun protection are obtained by including a liquid silicone resin having greater than 50 mole percent Me3SiO1/2 and PrSiC3/2 units, where Me is methyl and Pr is propyl in the composition. If desired to enable additional compatibility of ingredients comprising the personal care composition, the liquid silicone resin can also contain PhSiO3/2 or Ph2SiO2/2 units, where Ph is phenyl, or a mixture thereof.

Abstract: The present invention relates to a curable rubber composition comprising an organic elastomer, a filler and at least one curing agent for the elastomer. Such curable rubber compositions are widely used in the production of cured rubber articles, such as tyres, belts and hoses. The composition contains a branched silicone resin having Si-bonded hydroxyl groups or azo groups. This may lead to a reduction in the mixing energy required for processing, particularly in the energy required in the first (non-productive) mixing phase to give good dispersion of the filler in the organic elastomer. Use of the branched silicone resin can also accelerate cure (vulcanization), thus reducing the required cure time or reducing the amount of cure accelerator required.

Abstract: This invention relates to carbinol-functional silicone resins and a method to manufacture carbinol-functional silicone resins. This invention also relates to emulsion compositions comprising the carbinol-functional silicone resins. The carbinol-functional silicone resins can be used to make tough, water resistant, solvent resistant, scratch resistant, and heat resistant materials by formulating and reacting these silicone resins with certain organic materials.

Abstract: An article is provided that comprises fibers, as is a method of forming the article. The fibers comprise an organopolysiloxane component selected from (i) an organopolysiloxane having the formula (R3SiOi/2)w(R2Si?2/2)x(RSi?3/2)y(Si?4/2)z (I), wherein each R is selected from the group of an inorganic group, an organic group, and combinations thereof, w is from 0 to 0.95, x is from 0 to 0.95, y is from 0 to 1, z is from 0 to 0.9, and w+x+y+z=1, and (ii) a cured product of said organopolysiloxane having the formula (I), and combinations of (i) and (ii), provided that the fibers are free from organic polymers, organic copolymers, and organosiloxane-organic copolymers. The method of forming the article includes the step of forming fibers from a composition. The composition used to form the fibers comprises the organopolysiloxane having the formula (I), provided that the composition is free from organic polymers, all-organic copolymers, and organosiloxane-organic copolymers.

Abstract: This invention relates to thermoplastic elastomers comprising at least one silicone ionomer. These thermoplastic elastomers may be reprocessed and/or recycled.