Abstract: Catalytically self-cross-linking resinous binders are prepared by (a) addition reaction of a primary amine to a beta-hydroxyalkyl ester of an alpha, beta-ethylenically unsaturated acid, and (b) reaction of this secondary amine adduct, optionally in combination with other amines, with an epoxy resin. Curing catalysts are transesterification-promoting metal compounds. Protonized binders can be used in a cathodic electrodeposition bath.

Abstract: The invention provides a low-dusting anhydride curing agent blend for epoxy resins comprising a solid acid anhydride (trimellitic anhydride) and a normally liquid acid anhydride (methyl hexahydrophthalic anhydride. The invention further provides processes for preparing the anhydride blends and to curable epoxy compositions thereof.

Abstract: Carboxyl-containing resinous compounds, suitable for making water-dilutable thermosetting coating compositions after at least partial neutralization with a base, are prepared by a process wherein a non-acidic hydroxyl-containing resinous intermediate prepared by reacting at a temperature in the range 120.degree. to 180.degree. C. in the presence of an esterification catalyst in one or more steps (a) a diglycidyl ether of a dihydric phenol having an epoxy molar mass not exceeding 1100 with (b) a monofunctional phenol, and (c) dimerized unsaturated fatty acids in an epoxy phenolic or acidic equivalent ratio of (a), (b) and (c) from x/2/(x-2) to (x+0.1)/2/(x-2), wherein x is at least 4 for a diglycidyl ether having an epoxy molar mass from 400 to 1100 and x is at least 6 for a diglycidyl ether having an epoxy molar mass below 400, is reacted at a temperature not higher than 150.degree. C. with a carboxylic acid anhydride in an amount to produce a half-ester having an acid value in the range 15 to 80 mg KOH/g.

Abstract: The present invention is directed to storage-stable precatalyzed polyepoxides containing a catalytic amount of an ammonium salt and to a process for preparing higher molecular weight polyepoxides by reacting the precatalyzed polyepoxide with a polyhydric phenol or polymeric fatty acid.

Abstract: A process for the polymerization of epoxides using as catalyst a double metal cyanide-type compound is described wherein said process is carried out in the presence of at least(a) one or more salts composed of at least bivalent metal ions and metal-free anions, having a solubility in water of at least 1 g/100 ml at 25.degree. C., and/or(b) one or more non-metal containing acids of which a 0.1 N solution in water at 25.degree. C. has a pH not exceeding 3.

Abstract: A reinforced polymer composition comprising an epoxy resin matrix having intimately distributed therein, as the reinforcing component, a particulate or filamentary silicate or aluminosilicate mineral modified, prior to being admixed with matrix resin, by having a layer of an organic isocyanate chemically bonded to its surface by covalent bonding.

Abstract: The present invention is particularly directed to a coating composition exhibiting faster cure times and improved physical properties which comprise (1) from about 60% to about 95% by weight of a saturated epoxy resin, (2) from about 5% to about 40% by weight of triglycidyl cyanurate (or triglycidyl thiocyanurate) and (3) a curing amount of an epoxy curing agent, preferably an amino-containing curing agent.

Abstract: Catalytically self-cross-linking resinous binders are prepared by (a) addition reaction of a primary amine to a beta-hydroxyalkyl ester of an alpha, beta-ethylenically unsaturated acid, and (b) reaction of this secondary amine adduct, optionally in combination with other amines, with an epoxy resin. Curing catalysts are transesterification-promoting metal compounds. Protonized binders can be used in a cathodic electrodeposition bath.

Abstract: The present invention provides a curable composition comprising (1) at least one epoxy compound containing at least one vicinal-epoxy group and (2) at least one catalyst selected from lithium or Group II metal salts of a non-nucleophilic acid. The present invention further provides an active epoxy curing catalyst composition.

Abstract: Aqueous powder suspensions for thermoset coatings are prepared by intimately blending a mixture of(a) an epoxy resin/amine adduct having terminal amino groups,(b) a curing agent (phenolic resin, aminoplast resin, non-acidic polyester+transesterification catalyst), and, optionally,(c) a solid epoxy resin, said blend having a softening point of at least 70.degree. C., and milling down in water to a particle size of less than 20 micrometers.

Abstract: Pulverized coal is converted by means of a gaseous mixture and partial oxidation into synthesis gas which is subsequently utilized as a feedstock for the production of hydrocarbons. A gaseous mixture containing non-converted synthesis gas and low boiling hydrocarbons is separated from the higher boiling hydrocarbons and recycled to the coal conversion step.

Abstract: The present invention is directed to a method for improving the adhesion of epoxy resins to copper substrates which comprises pretreating the copper substrate with a solution of a suitable pretreatment compound such as a benzotriazole, benzothiazole, substituted benzotriazoles, etc.

Abstract: The present invention is directed to thermosetting binder compositions for coating, comprising:(I)(1) a non-acidic resinous compound, saturated, molecular weight at least 900, alcoholic hydroxyl content at least 0.2 eq/100 g;(2) a cross-linking agent comprising a nonacidic polyester of a polycarboxylic acid, having more than one beta-hydroxyl ester group per molecule, at least one of components (1) and (2) having an alcoholic hydroxyl functionality of more than 2, and(II) a curing catalyst comprising a transesterification-promoting metal compound which is insoluble in liquid hydrocarbons.These compositions can be used in solvent-based lacquers and paints, in coating powders, aqueous powder suspensions, in aqueous coating compositions for cathodic electrodeposition; for aqueous compositions component (1) (1) is preferably an epoxy resin/amine adduct.

Abstract: The invention relates to polyglycidyl ethers and provides such compounds based on diphenylol C.sub.7 to C.sub.13 alkanes, and their preparation from the appropriate diphenylol alkanes. The polyglycidyl ethers may be cured with known epoxy resin curing agents and may be used as base materials for the preparation of anionic or cationic aqueous thermosetting paint binders.The polyglycidyl ethers exhibit good compatibility with aliphatic hydrocarbon solvents.

Abstract: A curable thermosetting resin, especially suitable for RIM applications, comprising a blend of(a) 100 parts by weight of a polyepoxide, particularly a normally liquid polyepoxide and more particularly a glycidyl polyether of a polyhydric phenol,(b) from about 10 to about 200 parts by weight of at least one ethylenically unsaturated monomer, especially an aromatic monomer, and preferably styrene,(c) a curing amount of an aliphatic or cycloaliphatic polyfunctional amine or a polyamide, and(d) an effective amount of an amine-compatible free-radical initiator.

Abstract: A thermosetting resinous binder composition, heat-curable in combination with a transesterification-promoting metal compound as a catalyst to provide an insoluble infusible coating, comprising a mixture of:(1) a non-acidic resinous compound essentially free of ethylenical unsaturation, having a molecular weight of at least 900 and a hydroxyl content of at least 0.

Abstract: A thermosetting binder composition for coating, comprising:(I) (1) A non-acidic resinous saturated compound having a molecular weight of at least 900, and an alcoholic hydroxyl content of at least 0.2 eq./100 g;(2) A non-acidic polyester of a polycarboxylic acid cross-linking agent having more than one .beta.-hydroxyl ester group per molecule, and at least one of components (1) and (2) having an alcoholic hydroxyl functionality of more than 2, and(II) A transesterification-promoting metal salt or complex curing catalyst which is soluble in liquid hydrocarbons.For aqueous compositions, component (I) (1) is preferably a neutralized epoxy resin/amine adduct and component (II) should be insoluble in water; they can be used for cathodic electrodeposition.

Abstract: A thermosetting binder composition for coating, comprising:(I) (1) A non-acidic resinous saturated compound having a molecular weight of at least 900, and an alcoholic hydroxyl content of at least 0.2 eq./100 g;(2) A non-acidic polyester of a polycarboxylic acid crosslinking agent having more than one .beta.-hydroxyl ester group per molecule, and at least one of components (1) and (2) having an alcoholic hydroxyl functionality of more than 2, and(II) A transesterification-promoting metal salt or complex curing catalyst which is soluble in liquid hydrocarbons.For aqueous compositions, component (I) (1) is preferably a neutralized epoxy resin/amine adduct and component (II) should be insoluble in water; they can be used for cathodic electrodeposition.

Abstract: A thermosetting binder composition for coating, comprising:(1) A non-acidic resinous saturated compound having a molecular weight of at least 900, and an alcoholic hydroxyl content of at least 0.2 eq./100 g;(2) A non-acidic polyester of a polycarboxylic acid cross-linking agent having more than one .beta.-hydroxyl ester group per molecule, and at least one of components (1) and (2) having an alcoholic hydroxyl functionality of more than 2, and(II) A transesterification-promoting metal salt or complex curing catalyst which is soluble in liquid hydrocarbons.For aqueous compositions, component (I) (1) is preferably a neutralized epoxy resin/amine adduct and component (II) should be insoluble in water; they can be used for cathodic electrodeposition.

Abstract: The present invention provides a rapid curing epoxy composition, suitable for RIM processes, which exhibits unexpectedly high modulus and strength and stability which comprises(1) an epoxy resin,(2) a polyamine or polyamide,(3) a catalyst selected from the group consisting of alkali and alkaline earth metal salts of selected acids, and(4) a polyalkylene ether glycol.