Abstract: The invention provide a new lens curing method for making hydrogel contact lenses. The new lens curing method is based on actinically-induced step-growth polymerization. The invention also provides hydrogel contact lenses prepared from the method of the invention and fluid compositions for making hydrogel contact lenses based on the new lens curing method. In addition, the invention provide prepolymers capable of undergoing actinically-induced step-growth polymerization to form hydrogel contact lenses.

Abstract: A silicon-containing compound of formula (1), and a curing composition containing a silicon-containing compound of formula (1) wherein Z is hydrogen, a silicon-containing compound of formula (1) wherein Z is C2-C4 alkenyl or alkynyl and a hydrosilylation catalyst. The composition has excellent handling and curing properties and provides a cured product with excellent heat resistance and flexibility. In formula (1), Ra-Rg=C1-C12 saturated aliphatic hydrocarbon group or C6-C12 aromatic hydrocarbon group. Re and Rf do not simultaneously represent C1-C12 saturated aliphatic hydrocarbon group; Y=C2-C4 alkylene; Z=hydrogen or C2-C4 alkenyl or alkynyl; K is 2-7; T is 1-7; P is 0-3; and M and N are numbers selected such that N:M=1:1 to 1:100, that all M's and N's total at least 15, and that the mass average molecular weight of the compound of formula (1) is 3,000 to 1,000,000.

Abstract: A process for preparing aldehyde functional organopolysiloxanes and the products prepared therefrom is disclosed. The process involves a hydrosilylation reaction between an aldehyde having a non -conjugated unsaturated group with a polyorganohydrogensiloxane.

Abstract: Polyhydroxy curable fluoroelastomer compositions contain at least one process aid that is an aminosilicone having only a single primary amine group per polysiloxane molecule.

Abstract: An organopolysiloxane represented by formula (1) shown below and having (3,5-diglycidylisocyanuryl)alkyl groups represented by formula (2) at least at both terminals of the main chain: wherein, each R1 represents, independently, a substituted or unsubstituted monovalent hydrocarbon group of 1 to 20 carbon atoms, R2 is a group represented by formula (2) shown below, X is a group represented by formula (3) shown below, a represents an integer of 0 to 100 and b represents an integer of 0 to 30, provided that 1?a+b, and c represents an integer of 0 to 10 wherein, R3 represents an alkylene group of 2 to 12 carbon atoms wherein, R1 and R2 are as defined above, d represents an integer of 0 to 30, and e represents an integer of 0 to 30.

Abstract: To provide adhesive compositions for optical fibers which are curable with moisture and excellent in adhesiveness and resistance to moist heat. An Adhesive composition for optical fibers containing (A) a component having a reactive silicon containing group which contains (e) a compound obtained by reacting (a) an epoxy compound having at least one epoxy group with (b) a silane coupling agent having both a reactive silicon containing group and an epoxy-reactive group, wherein the component (A) has a molecular weight of 1000 or below per reactive silicon containing group; and an adhesive composition for optical fibers containing an alkylsilyl ester and (B) a compound other than the alkylsilyl ester which has at least one reactive silicon containing group.

Abstract: The invention relates to polysiloxanes of the general formula (I) [M?Dn]3T??(I), in which: M? is XSiY2O1/2 D is SiY2O2/2 T is SiZO3/2 and a process for the preparation thereof and their use as additives in aqueous surfactant-containing formulations.

Abstract: A powder coating composition of the present invention includes, as essential components, an epoxy group-containing vinyl copolymer (A) with a glass transition temperature of 40° C. or higher, an epoxy group-containing vinyl copolymer (B) that contains organosiloxane side chains and has a glass transition temperature of 0° C. or lower, and a polyvalent carboxylic acid (C), and is able to form a coating film with excellent external appearance and scratch resistance.

Abstract: Polysiloxane phosphoramide fire retardants are provided having the basic structural unit: wherein, Y is O or S; R? is selected from a saturated or unsaturated alkyl, an aryl, a heterocyclic, and a cycloaliphatic; R is selected from H, a saturated or unsaturated alkyl, an aryl, a heterocyclic, and a cycloaliphatic; X is selected from H, a saturated or unsaturated alkyl, an aryl, a heterocyclic, and a cycloaliphatic; n is selected from 0 to 500; and ? is selected from 1-500.

Abstract: A nanocomposite material including organic-inorganic polymeric interpenetrating networks having a low or no-shrinkage characteristic and a method for making the composite, as defined herein.

Abstract: The present Invention relates to a mixture comprising catenary, branched and for cyclic siloxanes of the general formula (I) where x is 1, 2 or 3, the substituents R are (i) organofunctional groups selected from —CH2—SH, —CH2—S—(CO)—R?, —CH2—(O—C2H4)a—OH with a=1 to 10, —CH2(O—C2H4)b—OR? with b=1 to 40, —(CH2)—NH2, —(CH2)—NHR?, —(CH2)—NR?2, —(CH2)—NH(CH2)2—NH2, —(CH2)—N[(CH2)2—NH2]2 and —(CH2)—NH(CH2)2—NH(CH2)2—NH2, In which R? is a linear, branched or cyclic alkyl group having 1 to 18 carbon atoms or an aryl group having 6 to 12 carbon atoms, (ii) hydroxyl, methoxy, ethoxy, 2-methoxyethoxy, isopropoxy, n-propoxy, isobutoxy and for n-butoxy groupe, and (iii) where appropriate, alkyl, alkenyl, isoalkyl, cycloalkyl or fluorcalkyl groups having 1 to 18 carbon atoms or aryl groups having 6 to 12 carbon atoms, whit the proviso that not more than one organofunctional group (i) is attached per silicon atom, the quotient of the molar ratio of the moiety (ii) to silicon le from I to 2, and the degree of oligornerizati

Abstract: A method for producing polymer particles which includes: forming polymer particles by heterogeneous polymerization of a monomer in a supercritical fluid and/or subcritical fluid, wherein a radical polymerization initiator (I) having in a molecular at least a group having radical-generation capability and a group having affinity for the supercritical fluid and/or subcritical fluid, and a radical polymerization initiator (II) are used in combination.

Abstract: A method and product thereof made by: reacting a carborane-containing compound and an aromatic compound (below) with a crosslinker having at least two silyl hydrogen atoms. R is alkyl, aryl, alkylaryl, haloalkyl, or haloaryl group. Cb is a divalent carboranyl group. U is an unsaturated hydrocarbon group. Ar1 and Ar2 are each a first aromatic group or a bisphenol residue, where at least one of Ar1 and Ar2 is the first aromatic group. Each Ar is a second aromatic group. Each n is a nonnegative integer. The values n? and n? are positive integers and m, w, x, y, and z are 0 or 1. If y is 0 than x and z are 0 and w is 1, and if y is 1 than x and z have different values and w equals z.

Abstract: An organic-inorganic hybrid composition comprising inorganic fine particles and a thermoplastic resin having a functional group capable of forming a chemical bond with the inorganic fine particles at a side chain thereof, the composition having a refractive index of 1.60 or more at a wavelength of 589 nm and a light transmittance of 70% or more at a wavelength of 589 nm in terms of the composition having a thickness of 1 mm. The composition has high refraction properties and excellent transparency.

Abstract: An organic-inorganic hybrid composition comprising inorganic fine particles having a refractive index of from 1.90 to 3.00, and a thermoplastic resin having a functional group capable of forming a chemical bond with the inorganic fine particles at one or more polymer chain terminals and having a number average molecular weight of from 1,000 to 500,000. The composition has high refraction properties and excellent transparency.

Abstract: A method of forming a powder and/or discrete gel particles of a compound selected from the group of a metallic oxide, a metalloid oxide, a mixed oxide, an organometallic oxide, an organometalloid oxide, an organomixed oxide resin, and/or an organic resin from one or more respective organometallic precursor(s), organometalloid precursor(s) and/or organic precursors and mixtures thereof, comprising the steps of passing a gas into a means for forming excited and/or unstable gas species (1a), typically an atmospheric plasma generating means; treating said gas such that upon leaving said means the gas comprises excited and/or unstable gas species which are substantially free of electrical charges at a temperature of between 10° C. and 500° C. A gaseous and/or liquid precursor is then introduced (50a,50b) into said excited and unstable gas species in a downstream region external (20) to the means for forming excited and/or unstable gas.

Abstract: A polycarbonate-polysiloxane copolymer comprising structural units of the formula: wherein each R1, R2, and R3 is independently the same or different monovalent C1-12 should this be C1-C13 like in the document? hydrocarbon group, G comprises a monovalent C6-1000 poly(oxyalkyl) group, each R4 and R5 taken together is independently the same or different divalent C3-30 hydrocarbon linking group wherein R4 is a C1-28 hydrocarbon and R5 is a C2-29 aliphatic group, a is 0 or greater, and b is one or greater; and structural units of the formula: wherein each R is independently the same or different C6-60 divalent hydrocarbon group, and at least 60% of the R groups comprise aromatic moieties.

Abstract: An organopolysiloxane compound containing per molecule at least one structural unit of the general formula O3-a/2RaSi—Y(SiRaO3-a/2)b??(I) where R can be identical or different and denotes a monovalent SiC-bonded organic radical which has 1 to 30 C atoms and may contain one or more N and/or O atoms, Y is a divalent to dodecavalent organic radical which has 1 to 30 C atoms and may contain one or more O atoms, a is 0 or 1, and b is an integer from 1 to 11.

Abstract: An inorganic matrix building material with enhanced water impermeability is prepared by curing an inorganic curable matrix and at least one particulate hydrophobic silicone resin substantially uniformly incorporated within the matrix, the at least one hydrophobic silicone resin being selected from the group consisting of a TD resin, an MQ resin, an MT resin, an MQT resin, and combinations thereof. In certain particular instances, the at least one hydrophobic silicone resin is a TD resin. The curing takes place at elevated temperature, optionally at elevated pressure.

Abstract: Sulfonate functional siloxane compositions, methods of their preparation, emulsion compositions containing them are disclosed. The compositions are useful in a variety of personal, household, healthcare formulations, as well as fabric and textile treatments.