Abstract: A hydrous silica gel is dehydrated by freezing, thawing, and removing water separated by thawing, thereby yielding silica particles. In addition, the silica particles thus formed is washed and fired, thereby producing a synthetic quartz glass power. A water glass is dealkalized, an oxidizing agent and an acid are added, the mixture thus formed is passed through a hydrogen type cation exchange resin, the aqueous silica solution thus formed is then gelled, and the gelled material is then washed and fired, thereby producing a synthetic quartz powder. Silica is sequentially held for a predetermined time at each temperature range of 150 to 400° C., 500 to 700° C., and 1,100 to 1,300° C., thereby producing a quartz glass.

Abstract: A nonaqueous electrolytic solution having an electrolyte salt dissolved in an organic solvent, which contains a silicon compound having an unsaturated bond which is represented by formula (I): wherein R1, R2, R3, R4, R5, and R6 each represent an alkyl group, an alkoxy group, an alkenyl group, an alkenyloxy group, an alkynyl group, an alkynyloxy group, an aryl group or an aryloxy group, each of which may have an ether bond in the chain thereof; n represents a number of from 0 to 5; when n is 1 to 5, X represents a single bond, an oxygen atom, an alkylene group, an alkylenedioxy group, an alkenylene group, an alkenylenedioxy group, an alkynylene group, an alkynylenedioxy group, an arylene group or an arylenedioxy group; provided that at least one of R1, R2, R3, R4, R5, R6, and X represents a group containing an unsaturated bond, an organotin compound or an organogermanium compound and a nonaqueous secondary battery having the same.

Abstract: Whipped cream of the present invention contains substantially no spherical fat particles having a particle diameter of 1 &mgr;m or greater, or contains 10% or more of spherical fat particles having a particle diameter of 0.1 &mgr;m or smaller, or contains 20% by volume or more of spherical fat particles having a particle diameter of 0.4 &mgr;m or smaller.

Abstract: The plant sterol-containing fat composition of the present invention contains a plant sterol fatty acid ester (A); and from 10 to 70% by weight of a partial glyceride (B). It can provide a cholesterol absorption inhibiting effect, and capable of ensuring no addition of an emulsifier or a reduction in amount of the emulsifier to be added when utilized for production of fat foods in the emulsion product form such as margarines, fat spreads, and whip creams, whereby an emulsion product having no or reduced flavor characteristic of the emulsifier can be obtained.

Abstract: An optical recording medium comprising a substrate having formed thereon a thin film comprising an organic compound dye that can form pits when irradiated with a semiconductor laser beam and a compound represented by formula (I) as a recording layer: 1

Abstract: A flame-retardant resin composition comprising (A) a synthetic resin, (B) (b1) a specific phosphoric acid salt or (b2) a combination of specific phosphoric acid salts, and (C) an anti-dripping agent.

Abstract: A metal compound solution of a metal compound represented by formula (I): wherein R1, R2, and R3 are each a halogen-substituted or unsubstituted alkyl group having 1 to 8 carbon atoms which may contain an oxygen atom in its carbon chain; R4 is a straight-chain or branched alkylene group having 2 to 18 carbon atoms; M is lead, titanium or zirconium: when M is lead, l, m and n represent 0, 2 and 0, respectively; when M is titanium or zirconium, n represents 0 or 1, and l and m each represent an integer of 0 to 4 satisfying equation: 1+m+2n=4, in a cyclohexane compound represented by formula (II): wherein R5 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; and p represents 1 or 2.

Abstract: An aqueous resin composition comprising a polyepoxy compound represented by formula (I): wherein n represents a number of from 0.1 to 20; Z represents a single bond, an alkylidene group having 1 to 4 carbon atoms or a sulfone group; and X represents a hydrogen atom or a glycidyl group, provided that at least 10% of nX's represent a glycidyl group, and water.

Abstract: A curing agent composition for an epoxy resin which comprises (B) a reaction product obtained from (a) a monoamine compound comprising an amine compound represented by formula (I): 1

Abstract: A material for chemical vapor deposition comprising a &bgr;-diketonatocopper (II) complex which is liquid at room temperature.

Abstract: The process for producing a low acid value phosphoric ester of the present invention is characterized by comprising treating a phosphoric ester having an acid value with an organic ortho-acid ester. The phosphoric ester preferably has a specific structure. The organic ortho-acid ester is preferably an ester of orthoformic acid, orthoacetic acid or orthopropionic acid with an alkyl group having 1 to 4 carbon atoms.

Abstract: An aqueous resin composition comprising a polyepoxy compound represented by formula (I): 1

Abstract: A curable composition for build-up which comprises (A) a bisepoxy compound represented by formula (I) shown below and (B) a polyepoxy compound having a polyhydric phenol skeleton at a weight ratio (A)/(B) of 3/97 to 20/80.

Abstract: A polyycarbonate resin coextruded article having a thermoplastic aromatic polycarbonate resin core layer and a thermoplastic aromatic polycarbonate resin cover layer which is provided on at least one side of the core layer, wherein the cover layer contains 0.1 to 25 parts by weight of a triazine light stabilizer represented by formula (I) per 100 parts by weight of the thermoplastic aromatic polycarbonate. wherein R1 represents an alkyl group having 1 to 17 carbon atoms; R2 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; and n represents an integer of 1 to 20.

Abstract: A ruthenium or ruthenium oxide thin film produced by CVD using as a ruthenium source a compound represented by formula (I): wherein R1 and R2 represent different alkyl groups having 1 to 4 carbon atoms.

Abstract: A metal compound solution of a metal compound represented by formula (I): 1

Abstract: A flame-retardant electrolytic solution of an electrolyte salt in an organic solvent, wherein the organic solvent contains at least one phosphorus compound represented by formula (I) and a nonaqueous secondary battery containing the flame-retardant electrolytic solution. wherein R1 represents an alkyl group having 1 to 8 carbon atoms, a halogenated alkyl group, an aryl group, an alkylaryl group, an aralkyl group or —CH2—COOR3; R2 represents a methyl group, an ethyl group or a halogenated alkyl group having 1 to 8 carbon atoms; R3 represents an alkyl group having 1 to 8 carbon atoms or a halogenated alkyl group; and m and n each represents 1 or 2 and the sum of m and n is 3.

Abstract: A crystalline polymer composition comprising 100 parts by weight of a crystalline polymer and 0.005 to 5 parts by weight of a compound represented by formula (I): wherein R1 and R2 each independently represent an alkyl group having 1 to 9 carbon atoms; R3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; and M represents an alkali metal, the compound having a chlorine content of 500 ppm or less.

Abstract: The stereolithographic resin composition comprising,(1)a catinically polymerizing organic compound, (2)an energy beam sensitive cationic polymerization initiator, and (3)a thermoplastic polymer compound which uniformly dissolves in said resin composition was provided. Therefore, the process for optical solid molding, which enabled the production of highly precise solid shape, was provided using said resin composition.

Abstract: A process for forming a metal oxide film by means of a chemical vapor deposition system, which comprises using a complex of a .beta.-diketone compound and a group IV metal glycolate, the complex being represented by formula (I): ##STR1## wherein M represents a metal atom of the group IV; R.sup.1 and R.sup.2 each represent a branched alkyl or cycloalkyl group having 4 to 8 carbon atoms; and R.sup.3 represents a straight-chain or branched alkylene group having 2 to 18 carbon atoms.