Abstract: An oxime ester compound represented below is useful as a photopolymerization initiator. A photopolymerization initiator including this as an active constituent has high sensitivity and causes no concern about coloration or contamination. (X represents a halogen atom or alkyl group. R1, R2, and R3 each independently represent R, OR, COR, SR, CONRR?, or CN, wherein R and R? each represent an alkyl group, an aryl group, an aralkyl group, or a heterocyclic group; these groups may be substituted with (a) halogen atom(s) and/or (a) heterocyclic group(s); the alkylene moiety in the alkyl or aralkyl group may be interrupted by (an) unsaturated bond(s), (an) ether bond(s), (a) thioether bond(s), or (an) ester bond(s); and R and R? may form a ring. Y1 represents an oxygen, sulfur, or selenium atom; A represents a heterocyclic group; m represents an integer 0-4; p represents an integer 0-5; and q represents 0 or 1.

Abstract: A solvent composition contains a tetralin compound (a) represented by the formula (I) and a polyether compound (b) represented by the formula (II). The solvent composition is excellent in safety and almost odorless, having a high capability of dissolving various organic materials, and also excellent in affinity to various substrates. The solvent composition is suitably used for various applications including various kinds of paints, adhesives, coating materials, detergents, and the like.

Abstract: A solvent composition contains a tetralin compound (a) represented by the following general formula (I) and a polyether compound (b) represented by the following general formula (II). The solvent composition is excellent in safety and almost odorless, having a high capability of dissolving various organic materials, and also excellent in affinity to various substrates. The solvent composition is suitably used for various applications including various kinds of paints, adhesives, coating materials, detergents, and the like.

Abstract: The solvent composition of the present invention comprises diphenylmethane derivative (a) represented in general formula (I) below, and polyether (b) represented by general formula (II) below, and has high safety, low odor-emission, excellent dissolving power for various organic materials, and high affinity for various substrates. (In the formula, n represents 1 or 2, each of x and y independently represents 0, 1, 2, or 3, each of R1 and R2 independently represents a C1-10 alkyl group, and when a plurality of R1 or R2 exist, they may be different.) (In the formula, m represents 1 to 10, p is 0, 1, 2, or 3, Prop represents a 1,2-propylene group, each of R3 and R4 independently represents a C1-10 alkyl group, and when m is 2 or more, methyl groups in 1,2-propylene groups represented by Prop may be randomly located.

Abstract: An oxime ester compound represented below is useful as a photopolymerization initiator. A photopolymerization initiator including this as an active constituent has high sensitivity and causes no concern about coloration or contamination. (X represents a halogen atom or alkyl group. R1, R2, and R3 each independently represent R, OR, COR, SR, CONRR?, or CN, wherein R and R? each represent an alkyl group, an aryl group, an aralkyl group, or a heterocyclic group; these groups may be substituted with (a) halogen atom(s) and/or (a) heterocyclic group(s); the alkylene moiety in the alkyl or aralkyl group may be interrupted by (an) unsaturated bond(s), (an) ether bond(s), (a) thioether bond(s), or (an) ester bond(s); and R and R? may form a ring. Y1 represents an oxygen, sulfur, or selenium atom; A represents a heterocyclic group; m represents an integer 0-4; p represents an integer 0-5; and q represents 0 or 1.

Abstract: The solvent composition of the present invention comprises diphenylmethane derivative (a) represented in general formula (I) below, and polyether (b) represented by general formula (II) below, and has high safety, low odor-emission, excellent dissolving power for various organic materials, and high affinity for various substrates. (In the formula, n represents 1 or 2, each of x and y independently represents 0, 1, 2, or 3, each of R1 and R2 independently represents a C1-10 alkyl group, and when a plurality of R1 or R2 exist, they may be different.) (In the formula, m represents 1 to 10, p is 0, 1, 2, or 3, Prop represents a 1,2-propylene group, each of R3 and R4 independently represents a C1-10 alkyl group, and when m is 2 or more, methyl groups in 1,2-propylene groups represented by Prop may be randomly located.

Abstract: A thermal recording material includes a condensation reaction product of a carboxylic acid component (A) with a polyhydric alcohol component (B) in a thermal recording layer as an essential component, wherein the carboxylic acid component (A) includes (poly) 4-hydroxybenzoic acid represented by the following general formula (I) as an essential component and another monocarboxylic acid and/or dicarboxylic acid as an arbitrary component, and wherein the polyhydric alcohol component (B) includes a polyhydric alcohol which is a trihydric or more alcohol as an essential component and a dihydric low molecular-weight alcohol as an arbitrary component. wherein in the general formula(I), a letter p denotes an integer ranging from 0 to 2.

Abstract: The energy beam curable epoxy resin composition comprising as essential components, (1) specific cationically polymerizing organic substance,(2) energybeam sensitive cation polymerization initiator, (3) cationically polymerizing organic substance except for the specific cationically polymerizing organic substance, described above, (4) radically polymerizing organic compound, and (5) energy beam sensitive radical polymerization initiator. The cured articles resulted from said resin composition, have superior properties and particularlly superior dimensional stability on humidity absorption. Therefore, a stereolithographic resin composition and a stereolithographic method are also provided.

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.

Abstract: The energy beam curable epoxy resin composition comprising as essential components, (1) specific cationically polymerizing organic substance, (2) energybeam sensitive cation polimerization initiator, (3) cationically polymerizing organic substance except for the specific cationically polymerizing organic substance, described above, (4) radically polymerizing organic compound, and (5) energy beam sensitive radical polymerization initiator. The cured articles resulted from said resin composition, have superior properties and particularlly superior dimensional stability on humidity absorption. Therefore, a stereolithographic resin composition and a stereolithographic method are also provided.

Abstract: The heat-sensitive recording material of the present invention comprises a heat-sensitive recording layer containing at least one resorcylic anilide derivative represented by the following general formula: ##STR1## wherein R.sub.1 represents an alkyl or alkoxy, group having 1 to 4 carbon atoms and R.sub.2 represents a hydrogen atom or an alkyl or alkoxy group having 1 to 4 carbon atoms.

Abstract: A process for treating paper to prevent discoloration when exposed to light which comprises adding 1% to 10% by weight of hypophosphorous acid or its salt based on the paper at any stage during or after paper making and maintaining said hypophosphorous acid or its salt therein. The invention also provides paper which contains hypophosphorous acid or its salt to prevent discoloration when exposed to light.

Abstract: A heat-sensitive recording material which comprises a color-forming layer containing a coupling substance which is usually colorless or light-colored and a developer which gives rise to color in the coupling substance upon heating, wherein the color-forming layer contains an organic phosphate, its metal salt or its basic salt of the following general formula (I): ##STR1## wherein R.sub.1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R.sub.2 and R.sub.3 each represent a hydrogen atom or an alkyl group having 1 to 9 carbon atoms, M represents a hydrogen atom or a metal atom having a valence of 1 to 4, L represents 0 or 1, m, represents a number of 0 to 1, n represents 1 or 2, and m+n represents the valence of the metal M.

Abstract: A heat-sensitive recording material wherein a color-forming layer comprising a coupling substance which is usually colorless or light-colored and a developer which gives rise to color in the coupling substance upon heating further contains, as a sensitizer, a tetrahydronaphthalene compound of the following general formula (I): ##STR1## wherein X represents an alkylene group, --O--CO--O--, --O--CO-- or --O--R'.sub.n Y--, n represents 1 or 2, Y represents --O-- or --S--, R' represents an alkylene group, and R represents a phenyl, alkylphenyl or tetrahydronaphthyl group.

Abstract: A heat-sensitive recording material wherein 1,2-bis(3,4-dimethylphenyl)ethane is contained as a sensitizer in a color-forming layer comprising a usually colorless or light-colored coupling substance and a developer which causes coloring of the coupling substance upon heating.

Abstract: An optical recording material having excellent light stability, shelf stability and solubility in a solvent comprises, as an indispensable constituent, a compound of the following general formula: ##STR1## wherein R represents a cycloalkyl group having 3 to 12 carbon atoms, X.sup.- represents a halide anion, a perchlorate anion or a quencher anion, rings A and B each represent a benzene or naphthalene ring which may be substituted with a halogen atom, and n represents 1 to 4.

Abstract: A heat-sensitive recording material which comprises a usually colorless or light-colored coloring material together with one or more compounds selected from among bissulfonate compounds, 2-substituted cyclohexyl sulfonate derivatives and biscycloalkyl aryldisulfonate derivatives.

Abstract: The process for producing a ceramic molding of the present invention comprises adding 0.1 to 20 parts by weight of an adduct of epoxidized polybutadiene with an organic amine to 100 parts by weight of a ceramic powder.

Abstract: The phenol compound of the present invention can be readily produced by, for example, reacting glyoxal, glutaraldehyde or crotonaldehyde with particular phenols. The phenol compound of the present invention is useful not only as a developer but also as an antioxidant for, e.g., synthetic resins and as an intermediate in the production of medicines or agricultural chemicals.The heat-sensitive recording material of the present invention, which contains the phenol compound as described above, shows little discoloration of the developed color and little coloration of the ground even at a high temperature and high humidity. Thus it is highly superior to conventional ones.

Abstract: Water-soluble or dispersible 2,2,6,6-tetramethylquaternary ammonium halides are provided, effective as stabilizers to increase the resistance to deterioration when exposed to light of synthetic resins, and having the formula: ##STR1## wherein: R.sub.1, R.sub.3 and R.sub.4 are alkyl having from one to about twelve carbon atoms;n is 1 or 2;when n is 1, R.sub.2 is alkyl having from one to about twelve carbon atoms; andwhen n is 2, R.sub.2 is alkylene having from one to about twelve carbon atoms; andX is halogen as well as stabilizer compositions and synthetic resin compositions containing the same.