Abstract: The invention concerns a coating powder composition comprising (A) a carboxyl group containing polyester resin having a number average molecular weight of 1,000.about.20,000, an acid value of 10.about.100, a glass transition temperature of 35.degree.-120.degree. C. and an SP value of 9.8.about.11.5, and (B) glycidyl trimellitate, wherein the equivalent weight ratio of carboxyl the groups of said (A) to the glycidyl groups of said (B) is 1:2 to 2:1. The coating powder composition is specifically suitable for a high-temperature-short time baking and capable of resulting in a coating having excellent film properties including bending and processability and which coating is highly-crosslinked.

Abstract: Novel crosslinked polymer microparticles having a mean grain diameter of 0.01 to 10.mu., whose polymer carries urea, urethane or amide groups. The invention also provides a coating composition containing said crosslinked polymer microparticles, which is excellent in application characteristics and storage stability and is capable of providing a coating with excellent film properties.

Abstract: The invention concerns a novel process for the preparation of poly(N-acylethyleneimine) grafted poysiloxanes comprising sulfoesterifying all or part of alcoholic hydroxyl groups of a hydroxy containing polysiloxane and conducting, in said sulfoesterification reaction mixture, ring-opening polymerization of a 2-oxazoline compound. The present process can afford the desired poly(N-acylethyleneimine) grafted polysiloxane in a higher reaction yield. The invention also provides novel poly(N-acylethyleneimine) grafted polysiloxanes.

Abstract: It is required to undergo painting pretreatment of a plastic formings by a method which is replaceable of a vapor-washing method using a chlorinated hydrocarbon in order to prevent from the environmental destruction by the chlorinated hydrocarbon.A plastic formings is brought in contact and treated with a treating solution prepared by suspending a hydrocarbons solvent in water.A plastic formings is brought in contact and treated with a treating solution containing an alkali component and then, said treating solution attaching on the surface of said formings is rinsed out and, in at least a final stage of the rinsing-out, the surface of said formings is brought in contact with a surface-conditioning solution which contains a nonionic surface-active agent having the HLB value of 10 to 17 in a concentration range of 0.001 to 100 g/l.

Abstract: An antifouling composition for use in the control of noxious aquatic life comprising as an active ingredient, one or more phenol derivatives of the formula ##STR1## wherein R is a C.sub.3 .about.C.sub.21 saturated hydrocarbon residue; X.sub.1 .about.X.sub.5 each is H, HO or CH.sub.3 O, providing excluding the case wherein all of X.sub.1 .about.X.sub.5 are hydrogen.This composition is useful as an antifouling paint for marine structures, ships, fishnets, buoys, industrial water system, water cooling system and the like.

Abstract: Novel composite resinous film comprising a continuous phase of at least one resin and a discontinuous phase of microdomains which are aggregates of particles of at least one insoluble resin and are 0.03 to 10 microns in size, is provided. The film can exhibit the most desirous properties of the respective, constituent resinous materials and are useful in various fields including the paint industry.

Abstract: Disclosed is an aqueous metallic coating composition which significantly reduces the production of hydrogen gas and does not have the problems which are brought about from hydrophobic segments. The composition can be stored for a long period of time and provide a metallic coating having good appearance and film properties (e.g. water resistance and adhesive properties with substrates). The aqueous coating composition of the present invention comprises(a) an acryl resin having a number average molecular weight of 1,000 to 50,000, an acid value of 15 to 200 and a hydroxyl value of 20 to 200, prepared by copolymerizing an ethylenic monomer and a phosphate monomer represented by ##STR1## [wherein X represents a hydrogen atom or a methyl group, Y represents an alkylene group having 2 to 4 carbon atoms and n is an integer of 3 to 30.] and(b) a pigment;the acryl resin being present in an amount of 2 to 500 parts by weight, based on 100 parts by weight of the pigment.

Abstract: A method giving a color tone-evaluating result which catches the deepness and transparency feelings of a coating film in an objective manner, and a device for use of this method. The evaluating results are obtained by projecting a luminous flux on a coating film, the high light saturation and/or high light excitation purity of the coating film are gotten on a basis of a high light part which is in an angle range of 5.degree. to 15.degree. against the regularly reflecting luminous flux in the reflecting light, and that, if necessary, the shade saturation and/or shade excitation purity are gotten on a basis of a shade part which is in an angle range exceeding 15.degree..

Abstract: The invention relates to a novel hydrolyzable silicone resin composition comprising a polysiloxane having at least one polyvalent metal ester group represented by either one of the following formulae:(--COO--) (.sub.m --M--(R.sub.2).sub.n--R.sub.1 --COO--).sub.m --M--(R.sub.2).sub.n ##STR1## in which R.sub.2 is a hydroxyl group, an alkoxyl group, an alkyl group, a halogen or oxygen atom; R.sub.1 is a bivalent organic residue; p and q each is 0 or an integer of 1 to 8; m is an integer of 2 or more; n is 0 or an integer of 1 or more, providing that the sum of m and n is equal to the valence number of metal M; and M is a bivalent to tetravalent metal selected from the group consisting of Ti, Al, Mg, Zn, Pb, Zr, Cu, Ni, Co and Sn, its preparation and coating composition containing the same, which is useful in an antifouling paint.

Abstract: The present invention provides a method of effectively recovering a hydrocarbon halide and the use of a specific aprotic polar compound for said method. Thus, the present invention provides a method of recovering a hydrocarbon halide comprising absorbing the hydrocarbon halide into an aprotic polar compound which has a 5 or 6 membered ring and a nitrogen atom at an alpha-position of a carbonyl group. In the present method, the absorbed hydrocarbon halide can be easily recovered by usual methods.

Abstract: A thermosetting resinous composition which consists essentially of(A) at least one polyepoxide compound having 2 to 6 epoxide groups,(B) at least one polyisocyanate compound having 2 to 6 isocyanate or blocked isocyanate groups, and(C) at least one catalyst selected from the group consisting of complex of organotinhalide with onium salt, complex of organotinhalide with hexamethylphosphoramide, complex of stibonium salt with zinc halide and complex of lithium halide with hexamethylphosphoramide, the equivalent ratio of isocyanate group and epoxide group being 1:2 to 2:1.Such resinous composition is useful for forming a cured coating and also for heat resisting molded products.

Abstract: Disclosed is a thermosetting epoxy resin composition which has excellent mechanical properties, such as heat resistance and impact resistance. The thermosetting resin composition of the present invention comprises (a) a polyisocyanate compound, (b) a polyepoxide compound, (c) a radical polymerizable compound selected from the group consisting of a vinyl aromatic monomer and a (meth)acrylate represented byCH.sub.2 .dbd.CR.sub.1 --CO--OR.sub.2wherein R.sub.1 represents a hydrogen atom or a methyl group, R.sub.

Abstract: The present invention provides a process for producing toner which has very narrow particle size distribution and contains a uniformity dispersed pigment therein. The process comprises dispersion-polymerizing(I) a pigment paste comprising (A) a pigment grinding agent having basic groups, acidic groups or the both, (B) a pigment and (C) vinyl monomers,(II) a polymerization initiator and(III) a dispersion polymerization stabilizerin a dispersion medium which dissolves said vinyl monomers (C) and dispersion polymerization stabilizer (III) and which does not dissolve polymerized resin particles.

Abstract: A method for preparing a clear under coat on a concrete substrate by applying onto a coating composition comprising a solvent type synthetic resin varnish and organic or inorganic pigment microparticles having an average diameter of 5 .mu. or less uniformly dispersed in the varnish in an amount which is enough to give a pigment volume concentration of 5 to 50, the difference in mean refractive index of the microparticles and synthetic resin being 0.01-0.40.

Abstract: The invention provides a polymerizable compound represented by the formula (I):A--X--COCOOR.sub.1wherein A represents a C.sub.1 -C.sub.18 alkenyl, alkynyl, alkenylaryl or alkenylaralkyl group, or a group represented bywherein R.sub.2 and R.sub.3, which are the same or different, represent a hydrogen atom or a C.sub.1 -C.sub.5 alkyl group, Y represents an oxygen atom or --NR.sub.4 --, in which R.sub.4 represents a hydrogen atom or a C.sub.1 -C.sub.5 alkyl group, n is an integer of 1 to 5, m is an integer of 1 to 10 and 1 is 0 or an integer of 1 to 20;R.sub.1 represents a hydrogen atom, a C.sub.1 -C.sub.5 alkyl group or an aryl group; andX represents an oxygen atom, a sulfur atom, --COO-- or --NR.sub.5 --, in which R.sub.5 is a hydrogen atom or a C.sub.1 -C.sub.5 alkyl group, provided that if Y is present, X is not --NR.sub.5 --,its production and polymers prepared therefrom.

Abstract: The invention concerns a process for preparing composite resin particles having the so-called semi-IPN (inter penetration network) structure, in which linear thermoplastic polymer chains get entangled with a crosslinked polymer core through partial or thorough penetration. This method is very important in that both of the chain polymer and core polymer are freely selected from various resins.

Abstract: The invention relates to a composite particle comprising 2 to 98% by weight of a base resin having softending point of -10.degree. to 120.degree. C. and a number average molecular weight of 600 or more and 98 to 2% by weight of an anisotropic crystalline polymer having a phase transition point of 60.degree. to 230.degree. C. and a number average molecular weight of 600 to 10,000 and capable for forming an anisotropic molten phase, the polymer having the specific structure in which a repeating unit of the formula:A--X--B (I)(wherein 100 to 50 mol % of A stands for defined mesogenic group, 0 to 50 mole % of A is p-phenylene, m-phenylene or trans-1,4-cyclohexylene, B is a defined spacer group, and X is ester bond, carbonate bond, amide bond, urethane bond or urea bond, and a repeating unit of the formula:R (II)in which R stands for bivalent to hexavalent hydrocarbon residue, are connected, in any successive orders and in a weight ratio of (I)/(II)=99.9/0.

Abstract: A surface treatment chemical for aluminum or its alloy consisting essentially of 10-1000 parts by weight of one or more ions of metals selected from the group consisting of scandium, yttrium, lanthanum, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium, 10-500 parts by weight of zirconium ion, 10-500 parts by weight of phosphate ion and 1-50 parts by weight of effective fluorine ion. A surface treatment bath for aluminum or its alloy consisting essentially of 10-1000 ppm of one or more ions of metals selected from the group consisting of scandium, yttrium, lanthanum, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, yttterbium and lutetium, 10-500 ppm of zirconium ion, 10-500 ppm of phosphate ion and 1-50 ppm of effective fluorine ion, and having a pH of 1.8-4.0.

Abstract: A method for repairing a high solid metallic coating on car bodies which involves applying at the area to be repaired an undercoat composition based on the same coating composition as used in the baked high solid metallic coating and with specified amounts of melamine resin and isocyanate compound added, the melamine resin having imino and methylol groups and the sum of the imino groups and methylol groups per triazine ring being 2.3 to 3.3, applying onto the undercoat a two-package urethane clear top coat composition on a wet-on-wet basis and finally drying the coats at 80.degree. C. or less.

Abstract: The present invention provides a poly(alpha-ketoester) compound represented by the formula (1): ##STR1## wherein G is a residue of an active hydrogen-containing compound G-(X-H).sub.n, or an alkyl, aryl, aralkyl, alkenyl, alkynyl group having 3 to 20 carbon atoms which may contain oxygen or nitrogen atoms, or a polymeric compound residue, X is a oxygen atom or --CH.sub.2, n is an integer of 3 to 1,000, R.sub.1 is a hydrogen atom, a C.sub.1 -C.sub.5 alkyl group or an aryl group, and a production thereof.