Abstract: A resin composition for coating comprising (A) a polyester-modified vinyl copolymer obtained by copolymerization of (a) a polyester resin having 5 to 60% by weight of oil or fatty acid component with special physical limitations, (b) a polymerizable unsaturated monomer having at least one tertiary amino group, (c) a polymerizable unsaturated monomer having at least one carboxyl group, and (d) an unsaturated monomer copolymerizable with the components (b) or (c), and (B) an epoxy resin can be cured at room temperature or with slight heating to give a coating film excellent in dispersibility of pigment having large oil absorption.

Abstract: In a squeezing and chamfering device comprising a cylindrical frame, a chuck device provided at an end of the cylindrical frame for seizing a tubular material, a driving device provided at the other end of the cylindrical frame with an output shaft thereof extended in the cylindrical frame, and a slide holder secured to an end of the output shaft to be slidable in the cylindrical frame in an axial direction thereof, a squeezing die having a tapered inner bore engageable with the tubular material is detachable secured to the slide holder, and a chamfering portion is provided at an end of the inner bore away from the chuck device.

Abstract: An apparatus for forming tapered threads to a workpiece such as a pipe comprises a casing and a supporting member attached to one side of the casing, and three support plates rotatably attached to the supporting member. Roller members or cam members are secured to the support plates, respectively, to be rotatable with respect thereto and rolling dies are also secured to the support plates. The rolling dies are rotated by an electric motor through a power transmission mechanism. The workpiece is inserted into a space defined by the supporting dies to be subjected to the roll-forming operation.

Abstract: An apparatus for forming tapered threads on a pipe such as a gas pipe comprises a base table on which a chuck device for holding a pipe is mounted in an opposing relation to a casing also mounted on the base table. A rotary disc is mounted on one side of the casing to be rotatable and a plurality of, at least three, die supporting plates are pivoted on one side of a rotary member integrally formed to the rotary disc. A plurality of rolling dies detachably attached to the disc supporting plates, respectively, and the rolling dies are rotated through a power transmission mechanism operatively connected to a drive source.

Abstract: A water-dispersed resin composition obtained by dispersing in water a neutralized resin prepared by neutralizing a part or whole of the carboxyl groups in an alkyd resin produced by reacting (A) an oil or fatty acid, (B) tris(2-hydroxyethyl)isocyanurate and/or tris(hydroxymethyl)isocyanurate, (C) a polyhydric alcohol, (D) a monobasic acid, (E) a polybasic acid and (F) polyethylene glycol, wherein individual components (A) to (F) are formulated in terms of the ratio of the number of hydroxyl groups/the number of carboxyl groups in the range of 1.0/1 to 1.6/1 and said alkyd resin has an acid value of 30 or less, is excellent in drying properties and in film properties such as gloss, water resistance, etc.

Abstract: A photo-curable coating composition for building materials which comprises(a) an isocyanate-modified epoxy ester obtained by the reaction of an acrylic or methacrylic ester of an epoxy compound having not less than two epoxy groups in the molecule with a polyisocyanate;(b) a photopolymerizable monomer being copolymerizable with the epoxy ester (a);(c) a ketone resin;(d) a photo-sensitizer; and(e) a sensitizing auxiliary.

Abstract: A liquid developer for electro photography which comprises a coloring agent, a coating agent, a resistivity controlling agent and a carrier liquid which disperses or dissolves the said three agents is suitable for providing high reproducibility of images when at least one of the following copolymers are used as said coating agent:(a) Copolymer of an acrylic acid compound represented by the following general formula (i) and a para-alkylstyrene represented by the following general formula (ii): ##STR1## (WHEREIN R.sub.1 is hydrogen or an alkyl group of 1-6 carbon atoms and R.sub.2 is hydrogen or C.sub.m H.sub.p X.sub.q wherein m=1-6 and p+q=2m+1 or p+q=m-1 and X is a halogen, amino group, secondary or tertiary amino group having an alkyl group of 1-4 carbon atoms, nitro group, cyano group or hydroxyl group) ##STR2## (WHEREIN R.sub.3 is an alkyl group of 2-18 carbon atoms).

Abstract: A water-dispersible epoxy modified alkyd resin produced by reacting (A) 0-50 parts by weight of oil or oil fatty acid, (B) 10-50 parts by weight of polyhydric alcohol, (C) 0-25 parts by weight of monobasic acid having 6 to 18 carbon atoms, (D) 15-70 parts by weight of polybasic acid having 4 to 10 carbon atoms or its anhydride, (E) 5-25 parts by weight of polyoxyalkylene glycol having a molecular weight of 600 to 20,000, and (F) an epoxy compound, wherein the ratio of the hydroxyl groups to the carboxyl groups in the components (A) through (E) is 0.625-1.8 and the amount of the component (F) is 3-50 parts by weight per 100 parts by weight of the total weight of the components (A) through (E), can provide water-dispersible coatings having improved drying characteristics and water resistance as well as corrosion resistance.

Abstract: A water-soluble coating composition for ship bottom comprising(A) 70 - 95 parts by weight of a vinyl copolymer of(a) 5 - 40% by weight of monoethylenic unsaturated monomer having at least one basic nitrogen atom,(b) 5 - 40% by weight of monoethylenic unsaturated monomer having at least one amide group, and(c) at least one monoethylenic unsaturated monomer copolymerizable with the said components (a) and (b), a total of the components (a), (b) and (c) being 100% by weight, and(B) 30 - 5 parts by weight of a water-soluble epoxy compound, shows excellent effect on controlling release rate of the toxic material from the primer coating layer and on inhibiting adhesion of marine organisms to ship bottoms, when applied to the primer coating layer of ship bottoms.

Abstract: A powder coating composition which comprises a mixture of in a given proportion(A) a polyester resin which contains hydroxyl groups as functional group and contains at least 80 mol.% of an aromatic polycarboxylic acid component in the polycarboxylic acid component of said polyester resin, said polyester resin having a softening point of 50.degree.-180.degree. C,(b) a polyacyl-(N-lactam) compound or a polyacyl-(N-imide) compound having a softening point above 40.degree. and(C) a said epoxy resin.The powder coating composition has a very good storage stability, free flowability at room temperature and exhibits good melt flow characteristics when heated above 130.degree. C for baking. Coating films prepared from this powder coating composition are excellent in the mechanical resistance, corrosion resistance, solvent resistance and luster.