Abstract: An active energy ray (e.g. UV rays)-curable organopolysiloxane resin composition comprises (A) 100 parts by weight of an organopolysiloxane resin containing epoxy groups and aromatic hydrocarbon groups, (B) 0.05 to 20 parts by weight of a photo acid generator, (C) 0.01 to 20 parts by weight of a photosensitizer or photo-radical generator, and (D) 0 to 5,000 parts by weight of an organic solvent. An optical transmission component made of the above-mentioned composition cured by irradiation with active energy rays (for example, UV rays). A method for manufacturing an optical transmission component by irradiating the above-mentioned composition with active energy rays (for example, UV rays).

Abstract: The present invention relates to an active energy ray-curable organopolysiloxane resin composition that comprises an organopolysiloxane resin having an epoxy group and an aromatic hydrocarbon group and a photopolymerization initiator, as well as to a light-transmitting component that comprises cured bodies produced by irradiating the aforementioned organopolysiloxane resin with active-energy rays in the presence of the aforementioned photopolymerization initiator, and to a method for manufacturing the aforementioned light-transmitting component.

Abstract: Disclosed is a simplified method for producing a polysiloxane in which wastes discharged during the production are reduced. This method for producing a polysiloxane is characterized in that a mixture of a silicon-containing compound represented by the following average composition formula (A): R1a(R2O)bSiO[(4-a-b)/2] (where R1s represent the same or different substituted or unsubstituted monovalent hydrocarbon groups; R2 represents a monovalent hydrocarbon group having 4 or less carbon atoms; and a and b satisfy 0?a?3; 0<b?4; and 0<a+b?4) and water is subjected to a hydrolysis-condensation reaction at a temperature of not less than 200° C. under a pressure of not less than 2.5 MPa.

Abstract: Operations such as those relating to selecting and moving multiple objects displayed in a game device can be provided to a player, using an ordinary pointing input device. The operations are performed by a method including the steps of displaying objects on a display unit; detecting a pointing status to recognize a state of a presence/absence of pointing and a pointing commencement position; determining whether or not the pointing commencement position is in an object region in a case where pointing is judged to be being executed from a detection result in the pointing status detection step by a pointing continuation determination unit; storing in a storage unit, as an active object, the object that undergoes pointing while the pointing continuation determination is being performed; and operating the active object by an object operational input unit while the pointing continuation determination is being performed.

Abstract: The present invention relates to an active energy ray-curable organopolysiloxane resin composition that comprises an organopolysiloxane resin having an epoxy group and an aromatic hydrocarbon group and a photopolymerization initiator, as well as to a light-transmitting component that comprises cured bodies produced by irradiating the aforementioned organopolysiloxane resin with active-energy rays in the presence of the aforementioned photopolymerization initiator, and to a method for manufacturing the aforementioned light-transmitting component.

Abstract: An active energy ray (e.g. UV rays)-curable organopolysiloxane resin composition comprises (A) 100 parts by weight of an organopolysiloxane resin containing epoxy groups and aromatic hydrocarbon groups, (B) 0.05 to 20 parts by weight of a photo acid generator, (C) 0.01 to 20 parts by weight of a photosensitizer or photo-radical generator, and (D) 0 to 5,000 parts by weight of an organic solvent. An optical transmission component made of the above-mentioned composition cured by irradiation with active energy rays (for example, UV rays). A method for manufacturing an optical transmission component by irradiating the above-mentioned composition with active energy rays (for example, UV rays).

Abstract: The present invention relates to a hydrosilation-curable organopolysiloxane resin composition comprising (A) an organopolysiloxane resin having three or more monovalent unsaturated aliphatic hydrocarbon groups and aromatic hydrocarbon carbon groups, (B) an organosilicon compound having two or more silicon-bonded hydrogen atoms and aromatic hydrocarbon groups, (C) a hydrosilation catalyst, and optionally (D) (d1) a solvent or (d2) a hydrosilation-reactive organosiloxane-based diluent, for optical transmission components, especially for optical transmission components serving as optical communication elements, relates to optical transmission components, represented by optical waveguides, comprisiong a hydrosilation-cured product of the aforementioned organopolysiloxane resin and organosilicon compound, and relates to a process for fabricatiing optical transmission components.

Abstract: A refractive index modulation element made of a refractive index modulation material. The refractive index can be thermally modulated. The refractive index modulation material can be a silicone resin represented by the following formula R.sub.n SiO.sub.(4--n)/2,where the average value of n is 0.5 to 3 and where K is an aliphatic or aromatic group with 1 to 18 carbon atoms or other functional group. The silicone resin has a spectral transmission factor that on average is higher than 80%, within the wavelength range of 350 nm to 1,600 nm, and a refractive index temperature dependence of -0.001/.degree.C. to -0.00005/.degree.C.

Abstract: The invention is a method for the preparation of organic solvent-soluble polyheterosiloxanes containing MO.sub.2 (M=Ti or Zr) and SiO.sub.2 units. A compound MA.sub.4 (M=Ti or Zr, A=hydrolyzable group) and a compound Si(OR).sub.4 (R=hydrocarbon group or alkali metal atom) are hydrolyzed and condensed in the presence of a carboxylic acid, a phenol, or a diketone. This is followed by the addition of an organosilane R.sup.1.sub.3 SiX (R.sup.1 =hydrogen or hydrocarbon group, X=hydrolyzable group) and hydrolysis and condensation.

Abstract: The introduction of a branched organopolysiloxane in which polysiloxane with the formula SiO.sub.2 constitutes the branching center or branch origin and the terminal on only one side of diorganopolysiloxane is bonded to the branch origin wherein this bonding is exactly to the branch origin. The branched organopolysiloxane is described by formula(SiO.sub.4/2).sub.x (R.sup.1.sub.2 ASiO.sub.1/2).sub.y (R.sup.1.sub.3 SiO.sub.1/2).sub.z (RO.sub.1/2).sub.u,wherein each R.sup.1 is independently selected from a group consisting of C.sub.1-8 alkyls, haloalkyls, alkenyls, and aryls; A is described by formula--(OSiR.sup.2 R.sup.3)n--R.sup.4wherein R.sup.2 and R.sup.3 are independently selected from a group consisting of C.sub.1-8 alkyls, haloalkyls, alkenyls, and aryls, R.sup.4 is selected from a group consisting of C.sub.1-8 alkyls, haloalkyls, alkenyls, hydrogen atom and hydroxyl, and 1.ltoreq.n.ltoreq.1,000; R is selected from a group consisting of hydrogen atom and C.sub.1-8 alkyls; 2.ltoreq.x.ltoreq.500; 0.ltoreq.

Abstract: The present invention is a novel method for the manufacture of branched polysiloxanes having the polysiloxane SiO.sub.4/2 unit as the branch center precisely bonded to one end of a diorganopolysiloxane. The present invention concerns a method for the manufacture of a branched polysiloxane characterized by reacting alinear polysiloxane with a reactive polysiloxane having halogen substitution.

Abstract: The present invention is a method for the preparation of branched organopolysiloxane in which polysiloxane with the formula SiO.sub.2 constitutes the branching center or branch origin and the terminal on only one side of diorganopolysiloxane is bonded to the branch origin wherein this bonding is exactly to the branch origin. Specifically, the method for preparation of branched polyorganosiloxane comprises the reaction of an alkali metal compound with a silanol-containing polysiloxane described by formula{SiO.sub.4/2 }.sub.x {R.sup.1.sub.2 (OH)SiO.sub.1/2 }.sub.y {R.sup.1.sub.3 SiO.sub.1/2 }.sub.z {RO.sub.1/2 }.sub.u,wherein each R.sup.1 is independently selected from a group consisting of C1-8 alkyls, haloalkyls, alkenyls, and aryls; R is selected from a group consisting of hydrogen atom and C1-8 alkyls; 2.ltoreq.x.ltoreq.500; 2.ltoreq.y+z+u.ltoreq.150; 2.ltoreq.y; 0.ltoreq.z; 0.3 .ltoreq.(y+z+u)/x.ltoreq.3; and 0.ltoreq.u/(x+y+z).ltoreq.0.

Abstract: The present invention concerns novel reactive polysiloxanes and a method for their manufacture. More specifically, the present invention concerns polysiloxanes of mainly SiO.sub.4/2 polysiloxane units which have highly reactive halogen atoms bonded to silicon and a method for their manufacture.

Abstract: Disclosed is a resin composition comprising (A) from 1-98 wt. parts of a graft copolymer obtained by graft-polymerizing (a) 5-80 wt. % of a rubbery polymer and (b) 95-20 wt. % of a monomer mixture consisting of 40-90 wt. % of an aromatic vinyl compound, 60-10 wt. % of a vinyl cyanide compound and 0-50 wt. % of another ethylenically unsaturated compound copolymerizable therewith, (B) 1-40 wt. % parts of a modified copolymer selected from (B.sub.1) a modified vinyl copolymer obtained by polymerizing (a) 40-90 wt. % of an aromatic vinyl compound, (b) 60-10 wt. % of a vinyl cyanide compound, (c) 0.01-10 wt. % of a monomer having an epoxy, carboxyl or amino group, and (d) 0-40 wt. % of another ethylenically unsaturated compound, and (B.sub.2) a modified olefinic copolymer obtaind by copolymerizing (e) 50-95 wt. % of ethylene or propylene, (f) 0.1-20 wt. % of a monomer having an epoxy, carboxyl or amino group, and (g) 0-40 wt. % of another ethylenically unsaturated compound, (C) 1-60 wt.