Abstract: It is an object of the present invention to provide a sulfonium group- and propargyl group-containing cationic electrodeposition coating composition whose curability can be enhanced without using any heavy metal-containing metal catalyst and which is further excellent in storage stability in a stationary state as well as a method of stabilizing cationic electrodeposition coating compositions. A cationic electrodeposition coating composition comprising a sulfonium group- and propargyl group-containing resin composition and a copper catalyst, the copper catalyst being a long-chain alkylsulfonic acid copper salt.

Abstract: The present invention has for its object to provide a method of forming an electrocoating film having an excellent smoothness and exceptionally high dielectric properties with a drastically reduced incidence of pinhole formation, such an electrocoating film, and such an electrodeposited article. A method of forming an electrocoating film comprising coating a work with an electrocoating composition curable by heating and irradiation with an activation energy beam in which an electrodepositing step, an aqueous cleaning step, a pre-baking step, an activation energy beam irradiation step, and a post-baking step are serially carried out in the order mentioned.

Abstract: An insulated square wire that has a high dielectric breakdown voltage is prepared by coating a square wire by cationic electrodeposition on a square wire to form an insulating film thereon, by application of a cationic electrocoating from an electrocoating bath, wherein the shifting speed of the square wire in the electrocoating bath is set in a range from 1 to 80 m/min; the shortest distance from a liquid-contact portion of the square wire onto the cationic electrocoating to an electrode is et longer than 1/2 of the total shift distance of the square wire from the liquid-contact portion of the square wire to a liquid-separation portion in the electrocoating bath, the cationic electrocoating contains a resin composition of which a hydratable functional group is reduced directly by electrons and passivated, resulting in deposition of a film, and the cationic electrocoating contains crosslinked resin particles.

Abstract: It is an object of the present invention to provide a method of coating an electric wire by which an insulated wire having a high dielectric breakdown voltage can be obtained.

Abstract: In view of the above-discussed state of the art, it is an object of the present invention to provide a method of coating an electric wire by which insulated wires excellent in dielectric breakdown voltage can be obtained by a relatively short period of dipping of articles to be coated in an electrodeposition bath. A method of coating an electric wire comprising cationic electrocoating with a cationic electrodeposition coating composition, wherein the cationic electrodeposition coating composition contains a resin composition having a hydratable functional group reducible directly by an electron and results in forming passive coat.

Abstract: It is an object of the present invention to provide a method of coating an electric wire having edges, by which insulated wires having a high dielectric breakdown voltage can be attained. A method of coating an electric wire having edges, comprising a step of: forming an insul at ing film by cationic electrodeposition using a cationic electrocoating, the cationic electrocoating containing a resin composition of which a hydratable functional group is reduced directly by electrons and passivated, resulting in deposition of a film, and the cationic electrocoating containing crosslinked resin particles.

Abstract: In view of the above-discussed state of the art, it is an object of the present invention to provide a method of adhesion of conductive materials which uses a water-based ecofriendly adhesive and can give uniform adhesive layers capable of leading to constant and high levels of adhesion strength and excellent in insulating properties even in the case of molded articles and the like. A method of adhesion of conductive materials comprising the step (1) of forming an adhesive surface having an adhesive resin layer on a conductive material by an electrodeposition step with an adhesive composition and the step (2) of joining an adherend surface of an adhesion target to the adhesive surface having the adhesive resin layer obtained in the step (1), wherein the adhesive composition comprises a hydratable functional group- and unsaturated bond-containing cationic resin composition.

Abstract: In view of the above discussed state of the art, it is an object of the present invention to provide a method of producing a laminate excellent in insulation and adhesion strength between a functional material and conductive material sandwiching that, without needing any organic solvent in production thereof, and laminates produced thereby. A method of producing a laminate which comprises the step (1) of forming, on each of two conductive materials, an adhesive resin layer by an electrodeposition step with a cationic electrodepositable adhesive composition comprising a cationic resin composition and the step (2) of joining the adhesive resin layer on each conductive material as obtained in the step (1) to each side of a functional material.

Abstract: A cationic electrodeposition coating composition containing no heavy metal-based anticorrosive agents such as lead compounds, and which is capable of forming a coating film with a high corrosion resistance. The composition contains 0.5 to 20% by weight of a compound having an N-substitued benzoxazine ring represented by formula (1), relative to a resin solid matter, and an unsaturated hydrocarbon group-containing sulfide-modified epoxy resin as a base resin: wherein R is a hydrocarbon group having 1 to 8 carbon atoms.

Abstract: A novel method for improving the coating film smoothness and a cationic electrodeposition coating composition containing no heavy metal-based rust prevention agents such as lead compounds and capable of forming a coating film with a high corrosion resistance are provided.

Abstract: It is an object of the present invention to provide a cationic electrocoating method capable of producing a coating film with high filiform-rust resistance, corrosion resistance, and rust prevention and a coated article obtainable by the method.

Abstract: An acetylide-form propargyl-containing resin composition for cationic electrocoating, which comprises a resin having a skeleton of epoxy resin and has a number average molecular weight of 500 to 20,000, and which contains, per 100 grams of the resin composition solids, 5 to 400 millimoles of sulfonium group and 10 to 495 millimoles of propargyl group, the total content of the sulfonium and propargyl groups being not more than 500 millimoles per 100 grams of the resin composition solids, said propargyl group being partly in the form of an acetylide. This resin composition may further contain unsaturated double bond.

Abstract: It is an object of the present invention to provide a cationic electrodeposition coating composition which is free of toxic rust-preventive pigments such as lead compounds and capable of giving coating films having high resistance to corrosion and rusting, even when applied to a substrate surface which is only insufficiently subjected, to a chemical conversion treatment. The present invention provides a cationic electrodeposition coating composition which comprises a rust inhibitor comprising at least one compound selected from the group consisting of compounds containing any of elemental metals belonging to the period 4, 5 or 6 of group 3 of the periodic table and a sulfonium- and propargyl group-containing resin composition. For, example, the content of said rust inhibitor is 0.03 to 10 weight parts in terms of the elemental metal in the rust inhibitor based on 100 weight parts of the solid resins in the resin composition.

Abstract: It is an object of the present invention to provide a cationic electrodeposition coating composition which is free of toxic rust-preventive pigments such as lead compounds and capable of giving coating films having high resistance to corrosion and rusting, even when applied to a substrate surface which is only insufficiently subjected, to a chemical conversion treatment.

Abstract: The present invention has for its object to provide a basic cationic electrodeposition coating composition with does not detract from either storage stability or bath stability even though it is basic and which does not make the coating equipment such as the electrodeposition tank and associated piping corroded, and a method for producing it. The present invention is directed to a basic cationic electrodeposition coating composition having a hydrogen ion concentration within the range of 7.5 to 12.0 in terms of hydrogen ion exponent (pH), and a method for producing it.

Abstract: An acetylide-form propargyl-containing resin composition for cationic electrocoating, which comprises a resin having a skeleton of epoxy resin and has a number average molecular weight of 500 to 20,000, and which contains, per 100 grams of the resin composition solids, 5 to 400 millimoles of sulfonium group and 10 to 495 millimoles of propargyl group, the total content of the sulfonium and propargyl groups being not more than 500 millimoles per 100 grams of the resin composition solids, said propargyl group being partly in the form of an acetylide. This resin composition may further contain unsaturated double bond.

Abstract: An aliphatic hydrocarbon group-containing resin composition for cationic electrocoating, which comprises a resin having a skeleton of epoxy resin and has a number average molecular weight of 500 to 20,000, and which contains, per 100 grams of the nonvolatile matter in said resin composition, (a) 5 to 400 millimoles of sulfonium group, (b) 80 to 355 millimoles of at least one aliphatic hydrocarbon group containing 8 to 24 carbon atoms and optionally containing unsaturated double bond within its chain, and (c) 10 to 315 millimoles of at least one member selected from among propargyl group and a terminal unsaturated double bond-containing organic group containing 3 to 7 carbon atoms; the total content of said (a), said (b) and said (c) being not more than 500 millimoles per 100 grams of the nonvolatile matter in said resin composition.

Abstract: An acetylide-form propargyl-containing resin composition for cationic electrocoating, which comprises a resin having a skeleton of epoxy resin and has a number average molecular weight of 500 to 20,000, and which contains, per 100 grams of the resin composition solids, 5 to 400 millimoles of sulfonium group and 10 to 495 millimoles of propargyl group, the total content of the sulfonium and propargyl groups being not more than 500 millimoles per 100 grams of the resin composition solids, said propargyl group being partly in the form of an acetylide. This resin composition may further contain unsaturated double bonds.

Abstract: A method of stabilization of electrolyte bath in electrocoating by immersing a substrate in the bath filled with a cationic electrocoating composition containing a basic resin and an amine compound and carrying out electrocoating; wherein said basic resin in said bath contains, per 100 grams of the resin solids, 10 to 300 millimoles of sulfonium group and 50 to 2,000 millimoles of carbon—carbon unsaturated bond, and said amine compound is contained in an amount of 1 to 50 millimoles per 100 grams of the basic resin solids in the bath, said amount being not less than 5 mole percent relative to the sulfonium group content in said basic resin, so that the sulfonium group remaining in the coat amount to not more than 50% relative to the sulfonium group contained in the electrocoating composition in said bath.

Abstract: Disclosed is a water developable photosensitive resin composition suitable for a printing plate, which has excellent dimensional stability and excellent chemical and physical properties. The photosensitive resin composition comprises;(A) an acrylic resin of which glass transition temperature (T.sub.g), as defined by ##EQU1## [wherein T.sub.g1, T.sub.g2, . . . represents a glass transition temperature of a homopolymer prepared from each monomer, T.sub.g0 represents a glass transition temperature of a copolymer and W.sub.1, W.sub.2, . . . shows a weight fraction of each monomer.] and acid value (AV) satisfy the following relations;60.degree. C..ltoreq.T.sub.g .ltoreq.125.degree. C.80 mg KOH/g.ltoreq.AV.ltoreq.130 mg KOH/g, andT.sub.g -10.ltoreq.AV.ltoreq.T.sub.g +40(B) a basic nitrogen atom-containing compound(C) an ethylenically unsaturated monomer, and(D) a photopolymerization initiator.