Abstract: Disclosed is a metal thietane compound represented by the following general formula (120), (wherein, in the above general formula (120), M is a member selected from the group consisting of Bi, Sb, Ti, Zr and Ta; X1 and X2 are each independently a sulfur atom or an oxygen atom; R1 is a divalent organic group; the bond between M and T shown by a dotted line and a solid line represents a single or double bond; m is an integer of 0 or 1 or more; n is the number of valence of M; and p is an integer of equal to or more than 1 and equal to or less than n, provided that when r is 1, q is 0 and Y is a monovalent inorganic or organic group; when r is 1 and n-p-q is 2 or more, a plurality of Ys contained are each independently selected from monovalent inorganic or organic groups; when r is 1 and n-p-q is 2 or more, a plurality of Ys may be bonded to each other to form a ring containing M; when r is 2, n-p-q is 1 or 2 and Y is a divalent group; when r is 2 and n-p-q is 2, two Ys may form a ring together with two Ms;

Abstract: Disclosed is a polymerizable composition containing a compound represented by the general formula (1) below and a bluing agent, wherein, in the general formula (1) below, M represents a metal atom; X1 and X2 each independently represent a sulfur atom or an oxygen atom; R1 represents a divalent organic group; m represents 0 or an integer of not less than 1; p represents an integer of not less than 1 but not more than n; n represents the valence of the metal atom M; Ys independently represent an inorganic or organic residue, and when n?p is not less than 2, Ys may combine together to form a ring containing the metal atom M.

Abstract: Provided is a process which can be carried out upon the production of a polyurethane/thiourethane-based resin with the use of a polyisocyanate compound, a polyol compound, and a polythiol compound, without causing abrupt heat generation or viscosity increase. At least one polyol compound having at least one ether bond and two or more hydroxy groups in a molecule is used as the polyol compound, whereby a large heat generation or an abrupt viscosity increase are prevented from occurring upon blending monomer.

Abstract: A resin composition excellent in tintability and resin strength, a resin obtained by curing such a resin composition, and an optical component is provided. A polymerizable composition containing an isocyanate compound suitably used for transparent resin materials, at least one polythiol compound which may have one or more (poly)sulfide bonds in a molecule, and at least one polyhydroxy compound having two or more hydroxy groups in a molecule and/or at least one (poly)hydroxy(poly)mercapto compound having one or more hydroxy groups and one or more thiol groups is used.

Abstract: A photopolymerizable composition comprising a polymerizable compound and a photopolymerization initiator, wherein the polymerizable compound is characterized by comprising (a) a bifunctional (meth)acrylic acid (thio)ester compound containing a sulfur atom in the molecule and (b) at least one of a (meth)acrylic acid ester compound represented by the general formula (1) or a bifunctional (meth)acrylic acid ester compound having a urethane linkage: wherein R1 and R2 are each independently a hydrogen atom or a methyl group; R3 and R4 are each independently an alkyl group, an aralkyl group, an aryl group or a halogen atom; m and n are each an integer of 0 to 2; X1 is an alkylidene group having 1 to 3 carbon atoms; and Y1 and Y2 are each independently a poly(oxyalkylene) group with the proviso that at least one of Y1 and Y2 is a poly(oxyalkylene) group having a hydroxy group.

Abstract: Aqueous ink for ink-jet recording which contains at least a water-insoluble coloring matter, water and a resin as main components and which takes the form of an emulsion, in which the coloring matter is at least one yellow hue coloring matter selected from the group consisting of a quinophthalone compound represented by the formula (1); and a pyridone azo compound represented by the formula (2); The ink is ink for ink-jet recording having excellent light resistance and storage stability, and enables formation of a high quality image without blotting, and obtained recording image is excellent in water resistance as ink for ink-jet recording.

Abstract: A methacrylic resin monomer composition comprising at least one of each of the following (A) to (C): (A) a methyl methacrylate monomer and/or a syrup thereof; (B) a compound represented by the general formula (1); and (C) a radical initiator, wherein, in the formula, R1 and R3, and R2 and R4 represent hydrogen atoms or methyl groups at the same, respectively. The composition can provide a crosslinkable methacrylic resin which is improved in resin properties such as heat resistance, rigidity, low water absorption, chemical resistance and the like without deteriorating high transparency a PMMA originally has. A transparent member and an optical member composed of such a resin are also disclosed.

Abstract: A photopolymerizable composition comprising a polymerizable compound and a photopolymerization initiator, wherein the polymerizable compound is characterized by comprising (a) a bifunctional (meth)acrylic acid (thio)ester compound containing a sulfur atom in the molecule and (b) at least one of a (meth)acrylic acid ester compound represented by the general formula (1) or a bifunctional (meth)acrylic acid ester compound having a urethane linkage: wherein R1 and R2 are each independently a hydrogen atom or a methyl group; R3 and R4 are each independently an alkyl group, an aralkyl group, an aryl group or a halogen atom; m and n are each an integer of 0 to 2; X1 is an alkylidene group having 1 to 3 carbon atoms; and Y1 and Y2 are each independently a poly(oxyalkylene) group with the proviso that at least one of Y1 and Y2 is a poly(oxyalkylene) group having a hydroxy group.

Abstract: Aqueous ink which contains compounds having one or more structures represented by general formula (1) in a molecule or salts thereof and which has a clear hue and is excellent in light fastness and moisture resistance is provided.

Abstract: It is disclosed that in ink for ink jet recording, containing at least a water-insoluble coloring matter, water and a resin as main components to form an emulsion, anthraquinone compounds represented by at least the following the formula (1) especially those in which X is an oxygen atom, R1 is represented by the formula (2) and further R8 is —NR12R13, are useful as coloring matters excellent in water resistance and also in light fastness and compatibility with a resin and that ink for ink jet recording using the same and exhibiting excellent performances in light fastness and storage stability, especially as ink of an ink jet recording system, can form a high-quality, unblotted image, a recorded image having also excellent property in water resistance.

Abstract: Aqueous ink for ink jet recording comprising a coloring matter and an aqueous medium, in which at least one of dyes represented by the formula (A) or a salt thereof is contained as the coloring matter wherein R1 and R3, independently from each other, represent a hydrogen atom, an optionally substituted alkyl group, an optionally substituted alkoxy group, an amino group, a hydroxyl group or a halogen atom, R2 and R4, independently from each other, represent a hydrogen atom, an optionally substituted alkyl group, an optionally substituted aryl group or an aralkyl group, A represents an optionally substituted phenyl group or naphthyl group, X represents a divalent bonding group free from a saturated carbon ring, and m and n, independently from each other, represent an integer of 1 to 4.

Abstract: Aqueous ink for ink jet recording comprising a coloring matter and an aqueous medium as main components, in which at least one of dyes represented by the formula (A) or their salts is contained as the coloring matter.

Abstract: It is disclosed that in ink for ink jet recording, containing at least a water-insoluble coloring matter, water and a resin as main components to form an emulsion, anthraquinone compounds represented by at least the following the formula (1) 1

Abstract: The invention provides a novel preparation process of a polycondensation type polymer, an excellent polymer which is represented by lactic acid and the preparation process of the polymer, a polycondensation agent used for the preparation process, and an intermediate. Specifically, the invention provides a preparation process of the polycondensation type polymer, for example, polyamide, polyimide, polythioester and polyester, comprising bonding a carboxyl group comprising compound with an active hydrogen group comprising compound in the presence of haloiminium salt. The invention provides excellent polylactic acid having a controlled D/L-isomer ratio in the repeating structural units and preparation process of polylactic acid, and further provides a haloiminium salt compound used for the preparation process and an intermediate compound of acid chloride.