A novel photosensitive adhesive composition including the following components (A), (B), (C), and (D): Component (A): a polymer having a structural unit of the following formula (1) and a structure of the following formula (2) at a terminal, Component (B): a polymer having the structural unit of formula (1), and a carboxy group or hydroxy group at a terminal, Component (C): a radical photopolymerization initiator, and Component (D): a solvent, wherein the content by mass of the component (B) is larger than that of the component (A),

##STR00001##

(wherein X is a C.sub.1-6 alkyl group, a vinyl group, an allyl group, or a glycidyl group, m and n are each independently 0 or 1, Q is a divalent C.sub.1-16 hydrocarbon group, Z is a divalent C.sub.1-4 linking group, the divalent linking group being bonded to an O group in formula (1), and R.sup.1 is a hydrogen atom or a methyl group.)

The invention provides poiyfunctionai bio-based methacrylate oligomers, which are synthesized via the ring-opening reaction between at least one ethyienicaliy unsaturated acid selected from methacrylic acid, acrylic acid, and crotonic acid, and a poiyfunctionai bio-based epoxy resin, such as epoxidized sucrose soyate. The extent of reaction may be varied to generate a family of methacrylate oligomers with differing degrees of methacryiation. These methacrylate oligomers can optionally be mixed with a reactive diluent, such as styrene, and cured using, for example, a thermally-activated free radical initiator to form a thermoset polymer with high modulus. The thermosets can be used to form composites, adhesives, coatings, and dental restorative materials. Methods of making the methacrylate oligomers are disclosed as are coating compositions and coated objects, such as dental restorative materials, using the methacrylate oligomers.

There is provided a thermosetting resin composition including: an epoxy compound having an isocyanuric acid ring represented by the following formula (1); a solid lubricant; and a dicyanate compound, or the dicyanate compound and a bismaleimide compound. ##STR00001##

Provided are a novel surface-modified inorganic nitride, a composition, a thermally conductive material, a device with a thermally conductive layer, and a method for manufacturing a surface-modified inorganic nitride. The surface-modified inorganic nitride of the embodiment of the present invention contains an inorganic nitride and an onium salt adsorbed onto a surface of the inorganic nitride.

Provided in the present invention are an epoxy resin composition, prepreg and laminate using the same, the epoxy resin composition comprising the following components: (A) an imide modified epoxy resin; and (B) a crosslinking agent, the imide modified epoxy resin being an epoxy resin having a structure of formula (1) and/or formula (2). The prepreg and laminate prepared from the epoxy resin composition have a high glass-transition temperature, a low dielectric constant, a low dielectric loss factor, a high heat and humidity resistance, a high toughness and a good processability.

There is provided a novel polymer, a composition containing the polymer, and a novel adhesive composition containing the polymer from which a cured film having desired properties is obtained. A polymer comprising a structural unit of Formula (1): ##STR00001##
wherein Q is a bivalent group, R.sub.1 is a C.sub.1-10 alkylene group, a C.sub.2-10 alkenylene group or C.sub.2-10 alkynylene group, a C.sub.6-14 arylene group, a C.sub.4-10 cyclic alkylene group, etc., or a polymer comprising a structural unit of Formula (6): ##STR00002##
wherein Q.sub.4 is an allyl group, a vinyl group, an epoxy group, or a glycidyl group, and R.sub.5 is a bivalent organic group having a main chain containing only carbon atom or at least one of oxygen atom, nitrogen atom and sulfur atom in addition to carbon atom, a composition comprising the polymer, and an adhesive composition comprising the polymer and a solvent.

A curable composition which is capable of forming a cured product having satisfactory heat resistance and adhesion to a base material, and has satisfactory curability, a cured film obtained from a cured product of the curable composition, a display panel or an OLED light provided with the cured film, and a method for producing a cured product using the curable composition. The composition includes a curable compound and a cationic polymerization initiator, and contains a cationic polymerizable compound having, as the main skeleton, a fused ring in which three or more rings including an aromatic ring are fused, and a salt including a gallium-containing anion as the cationic polymerization initiator.

A curable composition having satisfactory curability, capable of forming a cured product having satisfactory heat resistance and adhesion to a base material, a cured film made of a cured product of the curable composition, a display panel provided with the cured film, and a method for producing a cured product using the above-mentioned curable composition. The curable composition includes a curable compound and a thermal cationic polymerization initiator, the curable compound contains a cationic polymerizable compound containing, as a main skeleton, a fused ring in which three or more rings including an aromatic ring are fused, and the thermal cationic polymerization initiator contains a quaternary ammonium salt-type compound having a specific structure.

The invention provides polyfunctional bio-based methacrylate oligomers, which are synthesized via the ring-opening reaction between at least one ethylenically unsaturated acid selected from methacrylic acid, acrylic acid, and crotonic acid, and a polyfunctional bio-based epoxy resin, such as epoxidized sucrose soyate. The extent of reaction may be varied to generate a family of methacrylate oligomers with differing degrees of methacrylate. These methacrylate oligomers can optionally be mixed with a reactive diluent, such as styrene, and cured using, for example, a thermally-activated free radical initiator to form a thermoset polymer with high modulus. The thermosets can be used to form composites, adhesives, coatings, and dental restorative materials. Methods of making the methacrylate oligomers are disclosed as are coating compositions and coated objects, such as dental restorative materials, using the methacrylate oligomers.

The invention relates to novel curable bio-based thermosetting compositions of a) at least one highly-functional bio-based epoxy resin; and b) at least one carboxylic acid crosslinker selected from the group consisting of a water-soluble multifunctional carboxylic acid, a dicarboxylic acid oligomer from a melt reaction between a diol and a dicarboxylic acid or its anhydride, and mixtures thereof and which are curable with water, an alcohol or a water and alcohol mixture. The bio-based thermosets of the invention may be free of VOCs and/or organic solvents. The bio-based thermosets of the invention can be used to form coatings, composites, adhesives, and films. Methods of making the bio-based thermosets of the invention are disclosed as are coating compositions and coated objects, such as coatings, composites, adhesives, and films, using the bio-based thermosets of the invention.