Abstract: A process for producing a polymer of excellent weatherability, which comprises reacting a polymer having a thioether bond, with a peroxide to oxidize the sulfur atom in the bond to convert it into a sulfone.

Abstract: An aqueous coating composition constitutes an aqueous graft copolymer and an amino resin, the graft copolymer being obtained by neutralizing, with a base, the carboxyl groups of a copolymer which is obtained by copolymerizing the following components (a), (b), (c) and (d) and which contains 3-30% of component (a), 3-20% of component (b), 5-40% of component (c) and 10-89% of component (d):(a) a radical-polymerizable polyester compound having a (meth)acryloyl group at one end, preferably a macromolecular monomer which is a copolymer of a hydroxyalkyl (meth)acrylate and another .alpha.,.beta.-ethylenically unsaturated monomer, having a radical-polymerizable group at one end,(b) an .alpha.,.beta.-ethylenically unsaturated carboxylic acid,(c) a hydroxyalkyl (meth)acrylate, and(d) another vinyl monomer.

Abstract: A curing composition and a method for impregnating wood using the curing composition, which comprises a reaction product represented by formula (1) obtained by reacting an alkylene oxide adduct of a hydrocarbon polyol and (meth)acrylic acid: ##STR1## wherein R.sup.10 represents a residual group of a hydrocarbon polyol having from 3 to 15 carbon atoms and (c1+d1) hydroxyl groups; R.sup.11 represents an alkylene group having from 2 to 4 carbon atoms; R.sup.12 represents an alkylene group having from 2 to 4 carbon atoms; R.sup.13 represents a hydrogen atom or a methyl group; a1 represents a number of from 0 to 10; b1 represents a number of from 0 to 10; c1 represents a number of not less than 1.5; and d1 represents a number of not less than 0.5; provided that (a1+b1) is not less than 1.

Abstract: An aqueous coating composition constitutes an aqueous graft copolymer and an amino resin, the graft copolymer being obtained by neutralizing, with a base, the carboxyl groups of a copolymer which is obtained by copolymerizing the following components (a), (b), (c) and (d) and which contains 3-30% of component (a), 3-20% of component (b), 5-40% of component (c) and 10-89% of component (d):(a) a radical-polymerizable compound, preferably a macromolecular monomer which is a copolymer of a hydroxyalkyl (meth)acrylate and another .alpha.,.beta.-ethylenically unsaturated monomer, having a radical-polymerizable group at one end,(b) an .alpha.,.beta.-ethylenically unsaturated carboxylic acid,(c) a hydroxyalkyl (meth)acrylate, and(d) another vinyl monomer.

Abstract: A process for producing an antimicrobial fiber having a silver-containing inorganic microbicide characterized by using a treating solution for producing said fiber which contains a discoloration inhibitor represented by the following general formula: ##STR1## wherein R.sup.1 is hydrogen or a lower alkyl group and R.sup.2 is hydrogen or an alkali metal.

Abstract: In a process for producing trialkoxysilanes by reaction of a metallic silicon and an alcohol having 1 to 4 carbon atoms, the reaction is effected (1) using as the metallic silicon one containing 0.30 to 0.37% by weight of aluminum, (2) using as the catalyst cuprous chloride prepared by a wet process, and (3) allowing aluminum and/or an aluminum compound to coexist, thereby securing a high conversion rate of metallic silicon, and accordingly decreasing the amount of unreacted metallic silicon and suppressing discharge of industrial wastes with eliminating environmental problems.

Abstract: A curable composition comprising the following components (a), (b), (c) and (d) and/or (e):(a) a compound having one carboxyl group and one (meth)acryloyl group in the molecule,(b) a compound having two or more (meth)acryloyl groups in the molecule,(c) a levelling agent, and(d) a chain transfer agent and/or(e) a tertiary amine type photoinitiator; and a process for producing a shadow mask, comprising two etching steps, wherein the above curable composition is used as a secondary etching resist material.

Abstract: The present invention provides a thermosetting coating resin consisting of a branched polymer, which branched polymer is obtained by copolymerizing a macromolecular monomer having a radical-polymerizable group at one end in the molecule and having a weight-average molecular weight of 1,000-10,000, with another radical-polymerizable monomer, which branched polymer contains the unit of said macromolecular monomer in a proportion of 40-99.5% by weight based on the amount of total constitutional units, which branched polymer has a cross-linkable functional group, and which branched polymer has a weight-average molecular weight of 5,000-30,000. The present invention further provides a process for producing such a thermosetting coating resin.

Abstract: The present invention relates to a catalytic composition for photopolymerization, which comprises an alpha-diketone and a hydrazone or a silane compound which has a silicon atom carrying a hydrogen, and also relates to a photopolymerizable composition which comprises a vinyl compound capable of radical polymerization and the above catalytic composition. The catalytic composition is markedly improved in photopolymerization activity and the photopolymerizable composition uniformly cures.

Abstract: A multi-layer printed circuit board with self-contained printed resistors includes an undercoat layer made of an insulating material and formed on an outermost conductor circuit at least except for a ground portion of the outermost conductor circuit; an electro-magnetic wave shield layer made of a cured copper paste and formed on the undercoat layer and the ground portion of the outermost conductor circuit so as to cover a generally entire surface of the outermost conductor circuit; and protective overcoat covering an outer surface of the shield layer.

Abstract: The present invention is an electrically conductive coating composition comprising, as indispensable components, a quaternary ammonium polymer and a polyvalent metal salt. As the quaternary ammonium polymer there can be preferably used a polymer containing at least 30 weight % of quaternary ammonium monomer unit such as 2-methacryloyloxyethyltrimethylammonium chloride or 2-methacryloyloxyethyltrimethylammonium methylsulfate. As the polyvalent metal salt there can be used sulfate, hydrochloride, nitrate or the like of at least one polyvalent metal selected from the group consisting of iron, copper, cobalt, calcium, zinc, lead, nickel, manganese, aluminum, magnesium, titanium, cadmium, chromium, barium and tin. The electrically conductive coating composition of the present invention is extremely excellent in water retention characteristics and therefore has sufficient electric conductivity under circumstances of low humidity even at low coating weight.

Abstract: Disclosed is a method for producing an electro-photographic photoreceptor capable of repeated copying without one imagewise exposure for every one copying and which is superior in stability, sensitivity, resolution and tone reproduction. This method comprises converting to an insulator, by irradiation with energy ray, any selected area of a surface of an electrophotographic photoreceptor comprising a conductive substrate, a carrier generation layer and a carrier transport layer composed mainly of a compound which is converted to an insulator by irradiation with energy ray.

Abstract: A process for producing a trialkoxysilane comprising reacting metallic silicon and an alkyl alcohol having from 1 to 4 carbon atoms in the presence of a catalyst, in which the reaction is carried out in a gaseous phase in the presence of a halide. The process achieves a high selectivity of a trialkoxysilane and a high conversion of silicon while inhibiting formation of by-products. Where the process of the present invention is carried out in a fluidized bed system, a satisfactory fluid state can be maintained, and the reaction temperature can easily be controlled.

Abstract: Disclosed is a granular inorganic ion exchanger which is obtained by firing at 400.degree. C. or higher a granular molded product of a mixture of a metal alkoxide such as Si(OMe).sub.4 or hydrolyzate thereof, a clay mineral such as sepiolite and an inorganic ion exchanger such as antimony pentoxide and which has mechanical strength and heat resistance without losing its inherent ion exchangeability.

Abstract: A method of applying a quick setting spray material is disclosed, wherein a cement-containing principal composition is supplied into a feed pipe and sprayed through a nozzle and an aqueous solution of a (meth)acrylate as a set accelerating agent is supplied into the principal composition at a linear speed of 0.5 to 50 m/sec through at least two supply pipes that are connected to the feed pipe in a position within one meter behind the tip of the nozzle in such a manner that extended axes of the supply pipes cross each other within the feed pipe and wherein the at least two supply pipes form a supply angle of 30 to 90 degrees with respect to the direction at which the principal composition flows, whereafter the principal composition and the set accelerating agent are jetted from the nozzle.

Abstract: The present invention provides a process for the vapor-phase epitaxial growth of a Si single crystal film on a Si single crystal substrate using diluted disilane, in which the process is carried out at a linear speed of diluted disilane on the surface of the Si single crystal substrate is in the range of 5 to 100 cm/min. and, as desired, the substrate is subjected to the heat pretreatment in a hydrogen stream at a temperature of 1,000.degree. C. or higher for a period of 30 minutes or longer before the epitaxial growth.

Abstract: A process for producing an aqueous resin dispersion is disclosed, which comprises dissolving a macromonomer having a radical polymerizable group at the terminal thereof and an oil-soluble radical polymerization initiator in a hydrophobic vinyl monomer copolymerizable with the macromonomer to form a solution, emulsifying the solution in an aqueous medium in the presence of an emulsifying agent selected from (A) an alkali sulfosuccinate anionic surfactant and (B) a surfactant comprising from 2 to 98% by weight of (i) an alkali sulfonate anionic surfactant other than (A) or (ii) an alkali sulfuric ester anionic surfactant, and from 98 to 2% by weight of a nonionic surfactant having an HLB value of 10 or more, and copolymerizing the macromonomer and the vinyl monomer at an elevated temperature. The aqueous resin dispersion has a high content of a graft polymer with a reduced content of unreacted macromonomer.

Abstract: An ethylene graft copolymer is disclosed, which is obtained by radical polymerizing a monomer composition comprising (A) from 50 to 99.95% by weight of ethylene, (B) from 0.05 to 50% by weight of a macromonomer having a number average molecular weight of from 2,000 to 20,000 and having a (meth)acryloyl group only at one terminal of the molecular chain thereof, and (C) 0 to 49.95% by weight of other radical polymerizable monomer(s). The ethylene graft copolymer is a modifier for improving impact resistance of engineering plastics or a compatibilizer for engineering plastics to provide a molding resin composition excellent in impact resistance and oil resistance. The ethylene graft copolymer is also useful as a hot-melt adhesive or a pressure-sensitive adhesive.

Abstract: A process for producing a macromolecular monomer, which comprises anionic polymerization of a (meth)acrylic acid ester monomer by using, as a polymerization initiator, a compound represented by the following general formula [I]: ##STR1## wherein M.sup.+ is a quaternary ammonium ion; .phi.is a phenylene group; R.sub.1 and R.sub.2 are each an electron withdrawing group stabilizing the carbanion C.sup.-, or one of them is said electron withdrawing group and the other is an alkyl group of 1-6 carbon atoms or a phenyl group; and n is an integer of 0-6.

Abstract: Disclosed is a method for producing an electrophotographic photoreceptor capable of repeated copying without one imagewise exposure for every one copying and which is superior in stability, sensitivity, resolution and tone reproduction. This method comprises converting to an insualtor, by irradiation with energy ray, any selected area of a surface of an electrophotographic photoreceptor comprising a conductive substrate, a carrier generation layer and a carrier transport layer composed mainly of a compound which is converted to an insulator by irradiation with energy ray.