Abstract: Finely dispersed polyurethane polyurea crosslinked particles having an average particle diameter of not greater than 1 .mu.m and essentially comprising (A) an ion-forming polyol, (B) a polyisocyanate, and (C) a polyamine; and a process for producing the same are disclosed. The present invention provides finely dispersed polyurethane polyurea crosslinked particles and a process for producing the same; the dispersed particles being firmly crosslinked and having an average particle diameter of not greater than 1 .mu.m, and the particle dispersion having high preservation stability, preventing the core substance, if encapsulated therein, from undergoing denaturation, and exhibiting per se film-forming properties to provide a film excellent in water resistance, solvent resistance and chemical resistance.

Abstract: A crosslinked polyurethane polyurea spherically particulate polymer having an average particle diameter of 0.1 to 500 .mu.m, wherein the polymer molecule contains an isocyanurate ring in an amount of 10 to 30% by weight is disclosed. A process for producing the crosslinked polyurethane polyurea spherically particulate polymer is also disclosed.

Abstract: Polyurethane polyurea particles are obtained by an interfacial polymerization reaction between a hydrophobic phase which is capable of forming a three-dimensional crosslinked structure by reaction and is a mixture comprising a polyisocyanate compound and a polyhydroxy compound with the isocyanate groups being stoichiometrically excessive, and a polyamine in an amount not more than one equivalent of the stoichiometrically excessive isocyanate groups in the hydrophobic phase, and by polyurethanization reaction inside the particles.

Abstract: Disclosed is a process for preparing isocyanurate-type polyisocyanates characterized by reacting an aliphatic or alicyclic diisocyanate compound comprising hexamethylene diisocyanate as a major component in the presence of an isocyanuration catalyst represented by general formula [I], ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 independently represent a hydrocarbon group containing 1 to 20 carbon atoms, or a hydrocarbon group containing one or more hetero atoms; at least two of R.sup.1, R.sup.2 and R.sup.3 may be linked to each other; R.sup.4 indicates a hydrogen atom or a hydrocarbon group containing 1 to 20 carbon atoms; and R.sup.5, R.sup.6 and R.sup.7 independently represent a hydrocarbon group containing 1 to 20 carbon atoms. Diol-modified isocyanurate-type polyisocyanates can be prepared additionally using a hydrocarbon diol in the process.

Abstract: A polyvinyl chloride resin composition is disclosed, which comprises (a) a vinyl chloride homo- or copolymer, (B) a plasticizer, (C) a blocked urethane prepolymer as essential components, the blocked urethane prepolymer (C) being a prepolymer of isocyanurate type polyisocyanate prepared from an alkylene diisocyanate which may contain in the alkylene chain thereof a substituted or unsubstituted cyclohexane or aromatic ring.

Abstract: Disclosed is a construction material containing bitumen comprising (A) a polyol component, the polyol component consisting essentially of (a-1) a hydroxy-polyoxyalkylene ether of bisphenol A and/or bisphenol F, and (a-2) an aliphatic polyol, (B) a polyisocyanate component, (C) a bitumen, and/or (D) an aggregate. The construction material has improved water-proof and mechanical properties.

Abstract: An urethane coating resin composition comprising as essential components (A) an isocyanurate-type polyisocyanate derived from hexamethylene diisocyanate and containing at least 65% by weight of a mononuclear compound and (B) an acrylic polyol having a number-average molecular weight of 5,000 to 25,000 and a hydroxyl value of 40 to 160.

Abstract: A working material for construction or repair comprising (A) a mixture of 0.5 to 30% by weight of (a-1) a hydroxide of a divalent or higher basic metal, 10 to 99% by weight of (a-2) an aggregate and 0.5 to 70% of (a-3) a bituminous substance, the total amount of these materials (a-1), (a-2) and (a-3) being 100% by weight, and covering the mixture (A), (C) oxidized rosin or a mixture of (C) oxidized rosin with (D) a compound containing more than one carboxy group per molecule on an average and/or (B) a liquid hydrocarbon or a vegetable oil.

Abstract: A resin composition comprising (A) a polyisocyanate having an isocyanurate ring obtained by reacting at least one diisocyanate selected from alkylene diisocyanates, cycloalkylene diisocyanates and aralkylene diisocyanates with a diol having 10 to 40 carbon atoms or with a polyester polyol containing 12-hydroexystearic acid as an essential component in the presence of an isocyanuration catalyst, and (B) a nonpolar organic solvent. The composition is useful, for example, as a point, an adhesive or a molding material.

Abstract: A pigment paste comprising a pigment and as a pigment dispersing agent, a compound having a basic structure represented by the following formula ##STR1## wherein R.sub.1 represents a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group, and R.sub.2 represents a residue of a diol or polyol, or a mixture of said pigment dispersing agent and an organic solvent, said pigment being dispersed in said pigment dispersing agent or in said mixture.

Abstract: A process for producing a polyisocyanate containing an isocyanurate ring which comprises reacting at least one diisocyanate compound selected from the group consisting of alkylene diisocyanates, cycloalkylene diisocyanates and aralkylene diisocyanates with a cycloalkylene diol in the presence of an isocyanurating catalyst; and a resin composition for use in non-yellowing fast-drying urethane paints, comprising (A) the aforesaid polyisocyanate and (B) an acrylic polyol having a number average molecular weight of 2,000 to 30,000 and a hydroxyl value of 20 to 200.

Abstract: An epoxy resin composition is provided consisting essentially of(a) an epoxy compound having at least two epoxy groups in each of its molecules,(b) an ester of a mercaptoalkylcarboxylic acid having on an average more than two thiol groups in each of its molecules and in which the number of carbon atoms of the alkylene groups between the ester groups and the thiol groups is in excess of one on an average, and(c) a tertiary amine-type curing accelerator.This resin composition is used for new construction or repairs either as such or in the form of a construction material obtained by mixing this composition with aggregates and optionally with additives.

Abstract: A process for producing a polyisocyanate containing an isocyanurate ring, which comprises reacting at least one diisocyanate compound selected from the group consisting of alkylene diisocyanates, cycloalkylene diisocyanates and aralkylene diisocyanates with a diol having a molecular weight of 100 to 1,000 and containing at least 3 hydrocarbon substituents per molecule in the presence of an isocyanurating catalyst. A resin composition for urethane paints comprising the polyisocyanate as an essential ingredient.

Abstract: A coating resin composition consisting essentially of(A) a triazine-type resin obtained by co-condensing a triazine-type amino compound represented by the general formula ##STR1## wherein X is hydrogen, methyl, ethyl, propyl, phenyl or amino, formaldehyde and a polyol and as required, a monohydric alcohol, and(B) a polyisocyanate,the solids weight ratio of (A) to (B) being from 5:95 to 95:5.

Abstract: A process for producing a rosin-modified phenolic resin modified with an animal or vegetable oil, which has superior properties as a vehicle for offset printing inks; and a resin composition for printing inks comprising the oil-modified and rosin-modified phenolic resin obtained by the aforesaid process as an essential ingredient.

Abstract: A process for producing an animal or vegetable oil-modified and rosin-modified phenolic resin for printing inks, which comprises:[I] reacting (a) a resol-type phenol/formaldehyde initial condensation product, (b) an animal or vegetable oil having an iodine value of 100 to 210 or containing a hydroxyl group, (c) a rosin and (d) an alchohol, and if required, (e) an acid or (f) a hydrocarbon resin; or[II] reacting the condensation product (a) and the animal or vegetable oil (b) with a rosin ester obtained by the reaction of the rosin (c) and the alcohol (d) and if required, the acid (e) or the hydrocarbon resin (f) in advance.

Abstract: A pigment paste comprising a pigment and as a pigment dispersing agent, a compound having a basic structure represented by the following formula ##STR1## wherein R.sub.1 represents a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group, and R.sub.2 represents a residue of a diol or polyol, or a mixture of said pigment dispersing agent and an organic solvent, said pigment being dispersed in said pigment dispersing agent or in said mixture.