Abstract: Improved stable crosslinked dispersion which is further stabilized with butylated melamine formaldehyde resin. The dispersion to which the improvement of the invention applies is formed by addition polymerization of selected monomers in the presence of an organic liquid which is a solvent for the monomers, but a non-solvent for the polymer and a polymeric dispersion stabilizer having solvated and non-solvated segments.

Abstract: Disclosed is an adhesive coating material for a hard tissue, which comprises (1) a polymer having an acid value of 30 to 700 and including in recurring units a hydrophobic group and two carboxyl (--COOH) groups or one carboxylic anhydride ##STR1## group bonded to the polymer, said carboxyl groups or carboxylic anhydride group being bonded to adjacent carbon atoms, and (2) a polymerizable vinyl compound or a mixture of said polymerizable vinyl compound and an organic titanate compound.

Abstract: A hydrocarbon resin consisting essentially of a copolymer of (A) an unsaturated chain hydrocarbon or a cyclic hydrocarbon having a vinylidene group and (B) 9,10-dihydrodicyclopentadiene or its derivative, or a hydrocarbon resin modified by addition reacting an ethylenically unsaturated carboxylic acid or its anhydride, or hydrogen, to the above-mentioned copolymer. The hydrocarbon resin and the modified hydrocarbon resin have a high softening point and a low melt viscosity, and are suitable for use in adhesives and traffic paints.

Abstract: A polyolefin resin composition comprising a modified polyolefin prepared by reacting a polyolefin with an unsaturated carboxylic acid in the presence of a catalyst including at least one member selected from the group consisting of ketal peroxides and dialkyl peroxides having a decomposition temperature necessary for attaining the half life of 10 hours of at least 80.degree. C., and a fibrous, powdery, or flaky reinforcement.

Abstract: A process for the preparation of carboxyl-containing polymers comprising mixing together maleic anhydride, a free radical initiator, an additive which inhibits the homopolymerization of maleic anhydride but not that of methyl methacrylate below about 100.degree. C. and a polymer, above its melting point, in the absence of a solvent. The process yields anhydride-containing polymers without the substantial crosslinking or degradation which characterize the process in the absence of the additive.

Abstract: A surface treating agent for a shaped article of a polyolefin is provided which is composed of a solution in an organic solvent of a propylene-ethylene copolymer having a monoalkyl ester of a monolefinic dicarboxylic acid, such as monomethyl maleate, grafted thereto. The propylene-ethylene copolymer has a propylene content of 50 to 75 mole %, and a crystallinity, determined by an X-ray diffraction method, of 2 to 20%. The esterification degree of the alkyl ester of the monolefinic dicarboxylic acid is 45 to 100% if the esterification degree is taken as 200% when all of the carboxyl groups of the dicarboxylic acid are esterified. The amount of the monoalkyl ester grafted is 0.5 to 15% by weight. The grafted propylene-ethylene copolymer has an intrinsic viscosity [.eta.] of at least 0.3 and is dissolved in an amount of 10 to 100 kg per cubic meter of the organic solvent. The surface treating agent is suitable as an undercoat for a polyolefin shaped article.

Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.

Abstract: In an uncured filled coating composition comprising (a) a polyfuntional acrylic-type carboxylic acid ester monomer or its prepolymer, (b) a polymerization initiator capable of curing said monomer or prepolymer (a), and (c) an inorganic solid filler; the improvement wherein said composition consists essentially of(A) 100 parts by weight of said polyfunctional acrylic-acid carboxylic acid ester monomer or its prepolymer (a), said polyfunctional monomer or prepolymer (a) being composed of 0 to 75% by weight of a trifunctional or higher acrylic-type carboxylic acid ester monomer or its prepolymer having a molecular weight of about 200 to about 700 and 25 to 100% by weight of a difunctional acrylic-type carboxylic acid ester monomer or its prepolymer having a molecular weight of about 160 to about 400,(B) 0.

Abstract: The method of masticating diene rubber in the presence of maleic acid or maleic anhydride together with sulfur or an organic sulfur compound capable of generating a thiyl radical is shown.Improved tack, green strength or both are realized in the treated diene rubber.

Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.

Abstract: A composition for an interlayer film of a laminated safety glass, said composition comprising (A) a thermoplastic resin resulting from copolymerization of (1) vinyl chloride, (2) glycidyl methacrylate and (3) at least one monomer selected from the group consisting of ethylenic hydrocarbons, vinyl esters of fatty acids, acrylic esters and vinyl ethers, and (B) a plasticizer.

Abstract: Moldable polyolefin compositions exhibiting improved heat distortion and modulus characteristics, and a method of preparing such compositions are described. The method of preparing these polyolefin compositions comprises reacting(a) a graft-modified polyolefin obtained by reacting a polyolefin with an unsaturated polycarboxylic acid, ester or anhydride which is graft-polymerizable therewith, and(b) at least one organic hydroxy compound. These polyolefin compositions can be reinforced with fibers, minerals and fillers for particular applications.

Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.

Abstract: A hydrous gel consisting essentially of a water-in-oil dispersion cured with a crosslinking agent. The dispersion comprises a rubber component in which water is dispersed in the form of droplets in the presence of a surfactant. The rubber component is based on a liquid polyisoprene rubber having a cis-1,4 content of not less than 70% and a molecular weight of 8,000 to 120,000 or a modified polyisoprene rubber which is an adduct of the above-mentioned liquid polyisoprene rubber and maleic anhydride or a derivative thereof. The hydrous gel provides cold- and heat-retaining materials, perfume-retaining materials, adhesives for medical use, poultices and shock-absorbing materials.

Abstract: A process is disclosed for preparing stable aqueous dispersions of ionomer resins. Intimate fusion blends of 100 parts of an ionomer resin and about 5 to 900 parts of an alkenyl succinic anhydride (the alkenyl group containing about 16 to 52 carbon atoms) are heated and stirred with an aqueous alkaline medium.

Abstract: A process for producing glass fiber-reinforced, transparent cast sheets comprising impregnating glass fibers with a resin syrup comprising 10 to 50 parts by weight of a copolymer (A) consisting essentially of 20 to 95% by weight of an aromatic vinyl compound and 5 to 80% by weight of other polymerizable monomer, 1 to 40 parts by weight of an aromatic vinyl compound (B), 50 to 90 parts by weight of other polymerizable monomer (C) and optionally 0.5 to 10 parts by weight of maleic anhydride, and casting the resulting mixture.

Abstract: Disclosed are novel organic pigments adapted particularly for use as tillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.

Abstract: A polyolefin composition comprising a modified polyolefin obtained by adding an unsaturated carboxylic acid or an anhydride thereof to a polyolefin or mixtures of said modified polyolefin and an unmodified polyolefin, an inorganic filler, one or more nucleating agents or a combination thereof with one or more heat deterioration inhibitors, said polyolefin composition evidencing reduced deterioration by heat or reduction of its mechanical strength during a molding operation.

Abstract: A multiply grafted copolymer is obtained by graft-polymerizing onto non-elastic trunk polymer particles (a) a monomer mixture (b) comprising an elasticity-imparting monomer selected from conjugated dienes and acrylates, a polyalkylene oxide monomer comprising 4 to 500 alkylene oxide groups together with a terminal double bond and an optional ethylenically unsaturated monomer, and an ethylenically unsaturated monomer (c) in order. An antistatic resin composition comprising this multiply grafted copolymer alone or a mixture of this copolymer and a thermoplastic resin compatible therewith can utilize the rubbery polymer component (b) more effectively than an antistatic resin composition comprising a graft copolymer obtained by graft-polymerizing an ethylenically unsaturated monomer (c) onto a trunk polymer comprising a mere copolymer of a monomer mixture (b), and thus can provide an improved antistatic effect.

Abstract: This invention is addressed to an improved size composition for use in the treatment of glass fibers in the manufacture of glass fiber textiles, glass fiber reinforced plastics, and glass fiber reinforced elastomeric products wherein the size is formulated to contain, as the essential ingredients, a polybutadiene graft copolymer and a glass fiber anchoring agent. Bundles of glass fibers sized with the composition of the invention are particularly well suited for impregnation with an elastomer compatible material containing a resorcinol-aldehyde resin component and an elastomer component for use in the manufacture of glass fiber reinforced elastomeric products.

Abstract: Hydroxyl-containing filler reinforced thermoplastic polymers, such as polyolefins, are disclosed having improved physical properties such as impact strength, break strength and flexural modulus. The filler is compatibilized with a thermoplastic polymer containing labile atoms by mixing the two together in the presence of a coupling agent, such as maleic anhydride and a free radical initiator such as a peroxide catalyst. In a preferred embodiment, clay is coated with polyethylene by mixing the two in the presence of a peroxide catalyst and maleic anhydride and the coated filler is then compounded with additional polyethylene. In another preferred embodiment, a filler is coated with a polyolefin having a high melt index and the coated filler is then compounded with a polyolefin having a lower melt index. Also disclosed are various means for molding the compatibilized composites of this invention.