Abstract: A process for forming a new group of siloxane-based compositions by a one-step co-hydrolysis and the compositions formed thereof. The siloxane-based compositions being functionalized with a carbon-carbon double (C?C) bond and a silicon-hydrogen (Si—H) bond. The C?C bond and hydrogen (H) each being attached directly to a silicon (Si) atom of the silicon-oxygen (Si—O) backbone of the siloxane-based composition. The C?C bond may be from a vinyl or an aromatic radical like a phenyl substituent. The C?C bond substituent provides the functionality needed for forming crosslinkages through standard dehydrocoupling catalysts without the need for siloxane fluids or organic compounds containing alkyl or aryl functional groups. The process provides for varying proportions of silanes as starting monomers to tailor the desired silicon, carbon, hydrogen and oxygen ratios in the siloxane-based compositions or resins.

Abstract: A moisture-curable silylated resin possessing improved storage stability and short cure time is obtained by reacting a prepolymer with a silylating reactant comprising silane (i) possessing three methoxy groups, silane (ii) possessing three alkoxy groups independently containing from 2 to 4 carbon atoms, and, optionally, silane (iii) possessing two methoxy groups and one alkoxy group of from 2 to 4 carbon atoms and/or silane (iv) possessing one methoxy group and two alkoxy groups independently containing from 2 to 4 carbon atoms.

Abstract: A copolymer comprises at least two repeating units of formula I In this formula each R1 is independently an alkyl, haloalkyl, aralkyl, alkenyl, aryl, or aryl substituted with an alkyl, alkoxy, or halo; each Y is independently an alkylene, aralkylene, or a combination thereof; each G is independently a bond or a divalent residue equal to a diamine of formula R3HN-G-NHR3 minus the two —NHR3 groups; each R3 is independently hydrogen or alkyl or R3 taken together with G and to the nitrogen to which they are both attached form a heterocyclic group; each n is independently an integer of 0 to 1500; each p is independently an integer of 1 to 10; and each q is independently an integer of 1 or greater, and wherein at least 50% of the q's are the integer 2.

Abstract: A curable silicone composition comprising at least the following components: (A) an organopolysiloxane that contains epoxy groups and, preferably, has a branched molecular structure; (B) a phenolic-type curing agent such as an organosiloxane having in one molecule at least two phenolic hydroxyl groups; and (C) an acidic-anhydride type curing agent such as a methylhexahydrophthalic anhydride, as well as an arbitrary components such as (D) a curing accelerator, (E) a filler, or (F) an organic epoxy compound; is characterized by excellent handleability and reduced oil-bleeding during curing, and, when cured, forms a cured body of excellent flexibility and adhesion.

Abstract: Long chain ?-ketocarbonyl-functional organosilicon waxes are easily synthesized from organosilicon compounds bearing a reactive hydrogen bonded to N, O, or S, with a diketene. The products remain silicone-like despite being waxy, and can be used to gel low viscosity silicones to creamy formulations useful in cosmetics.

Abstract: N-methylol-containing organosiloxane polymers further containing at least one Si-bonded N-hydrocarbyl-N-(methylol or methalkoxy)-hydrocarbyl group are storage stable and retain their ability to post-crosslink, and display excellent permanence on many substrates. They are particularly useful for the treatment of fibers, textiles, and leather.

Abstract: A thermoset and method of making such by crosslinking a mixture of a polyhedral oligomeric silsesquioxane having pendent siloxane groups or unsaturated carbon bonds and a siloxylcarborane compound having unsaturated carbon bonds.

Abstract: A thermally conductive silicone rubber composition comprising: (A) an organopolysiloxane with the except of below-given components (C) and (E); (B) a thermally conductive filler; (C) a specific organopolysiloxane; (D) a curing agent; and (E) an organopolysiloxane composed of the following units: SiO4/2, R1R22SiO1/2, and R23SiO1/2 (wherein R1 is a univalent hydrocarbon group with an aliphatic, unsaturated bonds, R2 may designate the same or different univalent hydrocarbon groups that do not have aliphatic, unsaturated bonds.), said component (E) being used in an amount of 2 to 10 mass % per sum of components (A) and (E), demonstrates high flowability and good handling characteristics in spite of having a large content of thermally conductive filler and that demonstrates good adhesive properties and elongation and tensile strength in spite of the absence of reinforcing filler.

Abstract: A light-emitting device is provided which uses an encapsulant material made from a polymer having a high relative light output. The light-emitting device includes a light-emitting element and a member sealing the light-emitting element. The encapsulant material has one or more than two kinds of units given by the following formula (1) and a refractive index of 1.55 or more. where R is a hydrogen atom, alkyl group or phenyl group, Y is an alkyl group of which the carbon number is 1 to 6 or an alkyloxy group of which the carbon number is 1 to 6 and Z is an aromatic compound that meets predetermined requirements.

Abstract: The invention relates to silane cross-linking curable compositions, comprising a polymer P with at least two terminal groups of the following formulae (I) and (II) -Am-K1—SiXYZ (I), -Am-K2—SiXYZ (II), and/or two polymers P1 and P2, the polymer P1 having terminal groups of the following formula (I) -Am-K1—SiXYZ (I), and the polymer P2 having terminal groups of the following formula (II) -Am-K2—SiXYZ (II). In said formulae, A represents a bivalent binding group K1 and K2 independently of one another represent a bivalent aliphatic hydrocarbon group with a main chain of between 1 and 6 carbon atoms, the hydrocarbon groups K1, K2 being different, X, Y and Z independently of one another represent a hydroxy group of a hydrolysable group and m stands for 0 or 1.

Abstract: The present invention relates to a process for cross-linking a silane with the structure (IIa) for the preparation of a product, comprising component (III) twice, in triplicate or in a higher quantity, where the radicals B, R1, Ra, R?, X1 and the indices a and b are defined as above for structure (IIa) and can be identical or different in each case, or for the cross-linking of a condensate, a partial condensate, a polymer or a partial polymer comprising structural units with the structure (IIb) via the bond R1—, characterized in that a silane with the structure (IIa), or an isomer, a re-esterification product or a condensation product of said silane, which condensation product was formed by loss of an alcohol molecule, or a condensate, a partial condensate, a polymer, or a partial polymer comprising structural units of structure (IIb) is reacted with a compound having the structure (IV) Q-R5[-Q?]c,??(IV).

Abstract: A polymer that is a polysiloxane polymer has Levofloxacin groups, or pharmaceutically acceptable salts thereof, attached via linkers. The linkers may be hydrolytically labile thereby providing a manner of releasing the Levofloxacin from the polymer.

Abstract: A method of reducing surface tackiness of a silicone rubber cured product is provided. The method includes coating the surface of a cured product of a curable silicone rubber composition, which has a molar ratio within the composition of hydrogen atoms bonded to silicon atoms relative to alkenyl groups bonded to silicon atoms of 1.0 or greater, and which, following curing, exhibits a type A hardness prescribed in JIS K6253 of no more than 20, with a curable silicone resin layer which, following curing, exhibits a type D hardness prescribed in JIS K6253 of 30 or greater; and subsequently curing the silicone resin to form a cured resin layer with a thickness of no more than 0.5 mm. Adhesion of dirt to the surface can be prevented.

Abstract: A method for the preparation of hydrophilic elastomers involves the synthesis of polydimethylsiloxane with tunable hydrophilic surface properties. An elastomeric monolith with desired hydrophilic properties is produced by combining a polyethylene oxide polymeric surfactant additive with a PDMS base and curing agent during polymerization. The surfactant chain segment lengths are varied to control the hydrophobic/hydrophilic balance.

Abstract: A pigment dispersion liquid capable of stably recording images having high fastness and excellent quality for a long term in any cases has been provided. A pigment dispersion liquid mainly containing a polymer dispersant, a pigment and water, wherein the polymer dispersant is a copolymer comprised of at least a hydrophobic unit and a hydrophilic unit, the hydrophobic unit has a block portion comprised of at least one hydrophobic monomer, the hydrophilic unit has at least a repeating unit structure of an acrylamide structure of the following general formula (1), and the segment number (A) of the block portion comprised of a hydrophobic monomer to the number (B) of all segments of the polymer dispersant is in a range of 0.07 to 0.85 in terms of A/B ratio.

Abstract: Provision of a curable composition having good curability and adhesiveness by the use of a non-organotin catalyst. A curable composition containing an organic polymer (A) having a silicon-containing group crosslinkable by forming a siloxane bond, metal carboxylate (B), a silane coupling agent (C) free of an amino group, and an amino group-containing compound (D) in an amount corresponding to a weight ratio relative to (B) of 0-0.05, which contains, as the silicon-containing group of component (A), a silicon-containing group, wherein three hydrolyzable groups or hydroxyl groups are bonded to a silicon atom, as an essential component.

Abstract: The present invention provides a silicone resin composition for an optical semiconductor device, comprising (A) 100 parts by mass of an organopolysiloxane having a weight average molecular weight of from 500 to 20000, reduced to polystyrene, and represented by the following average compositional formula (1), (CH3)aSi(OR1)b(OH)cO(4-a-b-c)/2??(1) wherein R1 is an organic group having 1 to 4 carbon atoms and a, b, and c are numbers satisfying the equations: 0.8?a?1.5, 0?b?0.3, 0.001?c?0.5, and 0.801?a+b+c<2, (B) 3 to 200 parts by mass of a white pigment, (C) 400 to 1000 parts by mass of an inorganic filler other than said white pigment, (D) 0.

Abstract: A method for producing polycrystalline silicon, including: reacting trichlorosilane and hydrogen to produce silicon and a remainder including monosilanes (formula: SiHnCl4-n, wherein n is 0 to 4) containing silicon tetrachloride, and a polymer including at least trisilanes or tetrasilanes; and supplying the remainder and hydrogen to a conversion reactor and heating at a temperature within the range of 600 to 1,400° C. to convert silicon tetrachloride into trichlorosilane and the polymer into monosilanes.

Abstract: The present invention relates to a perfluoropolyoxyalkylene group-containing polymer represented by the following formula (1), wherein Rf is a group having a perfluoropolyoxyalkylene group; W1 is a divalent organosiloxane group having at least one group represented by the following formula (2); W2 is a monovalent group selected from an alkyl group, an alkenyl group, an alkenyloxyalkyl group, an aryl group and an organosiloxane group represented by the following formula (3), and the combinations thereof, the monovalent group having 1 to 300 carbon atoms and being optionally substituted with one or more fluorine atoms; Q is, independently of each other, a divalent linking group having 2 to 12 carbon atoms, optionally containing one or more oxygen atoms, nitrogen atoms, or fluorine atoms; and p is an integer of from 1 to 20, wherein X is a hydrolysable group; R1 is an alkyl group having 1 to 4 carbon atoms or a phenyl group; y is an integer of from 1 to 5; and a is 2 or 3, wherein, R2 a

Abstract: A gelling agent comprising an organopolysiloxane having a silicon-bonded organic group represented by general formula: R1—X—CO—NH—[X—N(—CO—X—R1)]p—X— (1) (wherein R1 designates a group containing metal salt of a carboxylic acid represented by formula —COO? (Mn+)1/n (where M is a metal that has a valence of 1 or higher); X's designate the same or different C2 to C14 bivalent hydrocarbon groups; and p designates an integer from 0 to 10.). Preferably, the organosiloxane has an optionally substituted C9 or more univalent hydrocarbon group. And a gelatinous composition comprising: (A) 1 to 99 wt. % of aforementioned gelling agent; and (B) 99 to 1 wt. % of a compound selected from the group consisting of a silicone oil, a no-polar organic compound, or a low-polar organic compound, or mixtures thereof. The gelatinous composition has excellent thermal stability, temporal stability, and properties of thixotropic rheology.