Abstract: The present invention provides a 2,2′-bis(6-benzotriazolylphenol) compound represented by the formula wherein A represents a methylene group or the like, R1 and R5 each represent a hydrogen atom, an alkyl group or the like, R2 represents a hydrogen atom or the like, R3 represents an alkylene group or the like, and R4 represents a hydrogen atom or a methyl group. The compound of the invention is useful as an UV absorber. Further, the compound of the invention can be incorporated into a copolymer by copolymerization with a vinyl monomer, and a polymer composition containing the copolymer can be used as an UV absorber.

Abstract: A surface-treating method of of screw parts, which method consists of coating beforehand a liquid organic resin based coating composition capable of forming a film having a volume resistivity of 1014 &OHgr;·cm or more at normal temperature onto a thread of screw parts to be mounted onto an automobile body by welding prior to a coating step of the automobile body, followed by heating and drying.

Abstract: The present invention can provide a cationic electrocoating composition, comprising:(a) an acrylic resin functioning as a leveling agent, which has both an amino group and an acid group in one molecule and has a hydroxyl value of 50 to 200,(b) a base resin, and(c) a crosslinking agent,wherein the acrylic resin (a) is formulated in an amount of 0.1 to 20 percent by weight, based on the total weight of a mixture of the base resin (b) and the crosslinking agent (c), and the cationic electrocoating composition is substantially free from lead compound. The present invention also provides a method for preventing cratering or cissing on an electrocoated film formed from the cationic electrocoating composition.

Abstract: The present invention provides a 2,2'-bis(6-benzotriazolylphenol) compound represented by the formula ##STR1## wherein A represents a methylene group or the like,R.sup.1 and R.sup.5 each represent a hydrogen atom, an alkyl group or the like,R.sup.2 represents a hydrogen atom or the like,R.sup.3 represents an alkylene group or the like, andR.sup.4 represents a hydrogen atom or a methyl group.The compound of the invention is useful as an UV absorber. Further, the compound of the invention can be incorporated into a copolymer by copolymerization with a vinyl monomer, and a polymer composition containing the copolymer can be used as an UV absorber.

Abstract: This invention relates to a table operating device for a machine tool having a table on which a work is mounted and a table lifting means for supporting the table and for vertically moving the table. The table operating device according to this invention has a vertically extended clamping member disposed underneath the table, a first reference plane provided on a side to the clamping member for positioning the table in a first direction on a horizontal plane; a second reference plane provided on a side to the clamping member for positioning the table in a second direction on the horizontal plane; a first pressing member for pressing the clamping member to the first reference plane; and a second pressing member for pressing the clamping member to the second reference plane.

Abstract: This invention relates to a table operating device for a machine tool having a table on which a work is mounted and a table lifting means for supporting the table and for vertically moving the table. The table operating device according to this invention has a vertically extended clamping member disposed underneath the table, a first reference plane provided on a side to the clamping member for positioning the table in a first direction on a horizontal plane; a second reference plane provided on a side to the clamping member for positioning the table in a second direction on the horizontal plane; a first pressing member for pressing the clamping member to the first reference plane; and a second pressing member for pressing the clamping member to the second reference plane.

Abstract: An object of the present invention is to provide a novel bisbenzotriazolylphenol compound having a UV absorving effect. The bisbenzotriazolylphenol compound of the invention is represented by the formula ##STR1## wherein A is a direct bond or represents a C.sub.1-6 alkylene group, a --C(CH.sub.3).sub.2 -- group, a --C(C.sub.2 H.sub.5)(CH.sub.3)-- group, a --O-- group or a --NH-- group, R.sup.1 and R.sup.3 are the same or different and each represent a hydrogen atom, a C.sub.1-4 alkyl group, an aryl group, a C.sub.1-4 alkoxy group or a halogen atom, and R.sup.2 and R.sup.4 are the same or different and each represent a hydroxyl group or a C.sub.1-12 straight- or branched-chain hydroxyalkyl group.

Abstract: Disclosed are a carbonate group-modified epoxy resin in which carbonate groups are introduced into an epoxy resin having secondary hydroxyl groups at terminals or lactone-modified epoxy resin having primary hydroxyl groups at terminals by the ring-opening reaction of a cyclic alkylene carbonate, a process for the preparation thereof, and a thermosetting resin composition containing the carbonate group-modified epoxy resin.

Abstract: An object of the present invention is to provide a novel compound which is suitably usable as a photochromic material.The compound of the present invention is a salt of a spiropyran compound and an acidic compound, the spiropyran compound being represented by the formula ##STR1## wherein R.sup.1 means a C.sub.1 to C.sub.20 alkyl group, an aralkyl group, a hydroxyethyl group, an acryloxyethyl group or a methacryloxyethyl group, R.sup.2 to R.sup.7 each mean a hydrogen atom, a C.sub.1 to C.sub.6 alkyl group or the like, R.sup.8 means a hydrogen atom, a vinyl group, a group --CH.sub.2 OR.sup.9 or a group --CH.sub.2 OCOC(R.sup.10).dbd.CH.sub.2 (wherein R.sup.9 means a hydrogen atom or a C.sub.1 to C.sub.4 alkyl group and R.sup.10 means a hydrogen atom or a methyl group), and X means an oxygen atom or a sulfur atom.

Abstract: A hydroxy-terminated linear carbonate is produced by reacting a cyclic alkylene carbonate such as neopentyl glycol carbonate with a substance having at least one alcoholic hydroxyl group in the presence of a catalyst. Mono- or polyhydric alphatic alcohols, polycaprolactone polyols, hydroxyl group-containing acrylic monomers and polymers, and polyester polyols are modified by the reaction with the cyclic alkylene carbonate to have an enhanced reactivity and resistance to hydrolysis.

Abstract: A novel acrylic monomer is produced by addition reacting a hydroxyalkyl (meth)acrylate or its lactone adduct with a cyclic alkylene carbonate, and then acylating the terminal hydroxyl group of the reaction product with a reactive derivative of a monobasic alkanoic acid or a dicarboxylic acid anhydride.

Abstract: Disclosed are a carbonate group-modified epoxy resin in which carbonate groups are introduced into an epoxy resin having secondary hydroxyl groups at terminals or lactone-modified epoxy resin having primary hydroxyl groups at terminals by the ring-opening reaction of a cyclic alkylene carbonate, a process for the preparation thereof, and a thermosetting resin composition containing the carbonate group-modified epoxy resin.

Abstract: For use as a monomer for producing hydroxyl group-containing vinyl polymers, there is provided a compound of the formula: ##STR1## wherein R.sup.1 is acryloyl, methacryloyl or 4-vinylbenzyl; R.sup.2 is an alkyl; and R.sup.3 is an alkyl, alkoxyalkyl, alkenyl, alkynyl, aralkyl or aryl.

Abstract: A hydroxy-terminated linear carbonate is produced by reacting a cyclic alkylene carbonate such as neopentyl glycol carbonate with a substance having at least one alcoholic hydroxyl group in the presence of a catalyst. Mono- or polyhydric alphatic alcohols, polycaprolactone polyols, hydroxyl group-containing acrylic monomers and polymers, and polyester polyols are modified by the reaction with the cyclic alkylene carbonate to have an enhanced reactivity and resistance to hydrolysis.

Abstract: A curable resin composition utilizing as the crosslinking mechanism thereof an acid catalyzed addition reaction of a cyclic alkylenecarbonate group with an alcoholic hydroxyl group is disclosed. The composition contains a compound or polymer having a plurality of 6-membered cyclic alkylenecarbonate groups and a polymer having a plurality of alcoholic hydroxyl groups. A polymer having pluralities of the cyclic alkylenecarbonate and hydroxyl groups in a single entity may also be used. The composition cures at room or elevated temperatures depending upon the acidity and amount of particular acid catalyst incorporated to the composition.

Abstract: A hydroxy-terminated linear carbonate is produced by reacting a cyclic alkylene carbonate such as neopentyl glycol carbonate with a substance having at least one alcoholic hydroxyl group in the presence of a catalyst. Mono- or polyhydric alphatic alcohols, polycaprolactone polyols, hydroxyl group-containing acrylic monomers and polymers, and polyester polyols are modified by the reaction with the cyclic alkylene carbonate to have an enhanced reactivity and resistance to hydrolysis.

Abstract: Provided is a convenient method for synthesizing quaternary ammonium salts which are useful as curing catalysts for one-part thermosetting resin compositions which maintain storage stability at room temperature. The ammonium salts are synthesized by direct reaction of a benzyl alcohol or a benzyl alkyl ether optionally having on the benzene ring and/or at .alpha.-position one or more substituent groups inert to the intended reaction, with a corresponding strong-acid salt of a tertiary amine.

Abstract: Provided is a convenient method for the synthesis of quaternary ammonium sulfonate compounds which are useful as curing catalysts for one-part thermosetting resin compositions which maintain storage stability at room temperature. The compounds are synthesized by subjecting in one step a benzyl alcohol optionally having on the benzene ring and/or the .alpha.-position one or more substituent groups to reaction with a corresponding tertiary amine and an organic sulfonic acid chloride.

Abstract: A curable resin composition comprising (a) an acrylic polymer having a plurality of alicyclic epoxide functions, and (b) an amount effective to initiate the curing reaction of the acrylic polymer (a) upon heating of a heat-latent cation polymerization initiator. The composition finds its uses in coating compositions, sealants, potting and casting compositions.

Abstract: Quaternary ammonium salts having a 2, 3, 5, 6-tetrahydroxazolo [2, 3-b] oxazole nucleus, such as 4-aralkyl or alkyl-2, 3, 5, 6-tetrahydroxazolo [2, 3-b] oxazolium salts are disclosed. These quarternary ammonium salts are useful a cationic polymerization initiator or proton-donating catalyst of the heat latent type to be incorporated heat-curable coating and other resinous compositions.