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: Polymer blends capable of forming hydrogels upon immersion in water are bonded by heat and pressure alone to water-resistant polymer compositions compatible with vinyl lactam polymers to form laminates. Bonding can also be achieved by casting on the surface of the polymer composition a solution of the blend in a solvent inert to the polymer composition and evaporating the solvent. The blends are optically clear blends of vinyl lactam polymers or copolymers with water insoluble copolymers of a hydrophobic water-insoluble ethylenically unsaturated monomer, an ethylenically unsaturated monomer containing an acid group, and optionally a hydrophilic ethylenically unsaturated monomer free from acidic groups.

Abstract: A resin composition suitable for injection moulding and having excellent heat resistance, impact resistance and crack resistance, which is composed of polyphenylene ether and rubber-reinforced styrene resin and an amount of volatile matters in the resin having molecular weight of about 300 or less is 5000 ppm or less. This resin composition is prepared by melting and kneading the two resins above in an extruder with a vent under keeping the vent part under reduced pressure.

Abstract: Polybutylene terephthalate molding compositions which contain a small amount of ethylene-ethyl acrylate copolymer, or an ethylene-vinyl acetate copolymer, or a mixture of these copolymers, and optionally polyethylene, provide moldings which in preferred embodiments possess improved impact resistance and lower specific gravity, without more than negligible loss of other properties. Other conventional modifiers can be present.

Abstract: A polyphenylene ether composition excellent in impact resistance, heat stability, gloss and processability which contains(a) 80-20 weight parts of polyphenylene ether resin, and(b) 20-80 weight parts of a rubber-reinforced polystyrene wherein 5-25 weight % of polybutadiene having 15-35% of 1,2-vinyl-structure is dispersed forming discontinuous elastomer phase,particularly said polyphenylene ether resin being a polymer having the following recurring unit I or units I and II: ##STR1## wherein R.sub.1 -R.sub.6 represent the same or different monovalent residual groups such as alkyl group having 1-4 carbon atoms excluding tert.-butyl group, aryl group, halogen or hydrogen, but R.sub.5 and R.sub.6 are not hydrogens at the same time.

Abstract: Novel copolymers are prepared by the interaction of a melt mix of a high molecular weight or low molecular weight bisphenol A polycarbonate polymer and a high molecular weight diprimary dialcohol polyester polymer such as polyethylene terephthalate polymer. The resulting copolymers are transparent, relatively tough and are useful as glazing materials or molding compounds and are capable of maintaining dimensional stability at temperatures approaching their glass transition temperature.

Abstract: A cross linked graft polyester comprising the reaction product of a mixture of a polyunsaturated vinyl monomer with an acidic monovinyl monomer having at least one carboxyl group with an unsaturated polyester.

Abstract: A setting resin composition, comprising:(A) an unsaturated polyester having at least 30% of all the terminal groups thereof sealed each with a group represented by the general formula (I): ##STR1## wherein, n stands for an integer of 0 to 8, and (B) a dicyclopentadiene type resin containing 50 to 100% by weight of polymerized dicyclopentadiene units.

Abstract: The use of alkyl acrylate in the preparation of the soft component of impact-resistant polystyrene based on polystyrene-grafted butadiene mixed with polyphenylene ether reduces the dust attraction of moldings prepared from this type of mixture.

Abstract: A molding resin composition comprising [A] 100 parts by weight of a vinyl chloride resin, [B] 30-110 parts by weight of a graft copolymer wherein 90-50 parts by weight of a monomer mixture consisting of 10-40% by weight of an alkenyl aromatic compound, 20-50% by weight of an alkenyl cyanide compound and 20-50% by weight of a methacrylate is graft-copolymerized on 10-50 parts by weight of polybutadiene or a rubbery copolymer of 60% by weight or more of butadiene and a vinyl monomer copolymerizable therewith (the amount of toluene-insoluble fraction is preferably 50% by weight or less), the degree of grafting being 30-110% and the acetone-soluble fraction of the graft copolymer having an intrinsic viscosity of 0.4-1.5 dl/g as measured in methyl ethyl ketone at 30.degree. C., [C] 3-50 parts by weight of a rubbery acrylonitrile-butadiene copolymer and [D] 15-100 parts by weight of a plasticizer for vinyl chloride resins.

Abstract: A method for the uniform blending of additives into thermoplastic synthetic resins. A solution or finely divided dispersion of the additive is produced in a polymerizable cyclic ester of the general formula: ##STR1## wherein R represents respectively hydrogen or an alkyl group of 1-18 carbon atoms,A represents a --O-- or --COO-- group,x and y represent integers from 1 to 15, andz represents 0 or 1.This solution or dispersion, optionally after polymerization of the cyclic ester, is admixed to the thermoplastic synthetic resin at the end of its manufacturing process or in a subsequent processing stage.

Abstract: A crystalline unsaturated polyester composition for binding foundry sand, said composition comprising:(A) 100 parts by weight of an unsaturated polyester resin which is a mixture of 100 parts by weight of a normally solid, substantially tack-free, crystalline unsaturated polyester and 0 to 50 parts by weight of an unsaturated prepolymer or monomer copolymerizable with said unsaturated polyester or both, and(B) 0.1 to 10 parts by weight of a mixture of at least two of (1) a radical polymerization catalyst which requires a temperature of at least 70.degree. C. but below 90.degree. C. to obtain a half-period value of 10 hours, (2) a radical polymerization catalyst which requires a temperature of at least 90.degree. C. but below 110.degree. C. to obtain a half-period value of 10 hours and (3) a radical polymerization catalyst which requires a temperature of at least 110.degree. C. but not exceeding 130.degree. C. to obtain a half-period value of 10 hours.

Abstract: A pigmented ink composition for use in jet printing formulated of an aqueous or water-alcohol solvent system, a highly water dispersible white pigment limited to a particle size of less than 5 microns, a water dispersible resinous binder, a basic compound for maintaining a pH within the range of 7.5 to 9.5, and a plasticizer, and which may include in addition a coalescent agent and organic dye components for imparting color to the pigment.

Abstract: Shaped articles having improved mechanical strengths are comprised of (i) a nylon polyamide resin, (ii) a reinforcing amount of glass fibers therefor, and (iii) an impact strength increasing amount of a (meth)acrylic compound having the structural formula:[CH.sub.2 .dbd.CR--CO--A].sub.n X (I)wherein R is hydrogen or methyl, n is an integer equal to 2, 3 or 4, A is the linkage --O-- or --NH-- and X is an organic radical of valency n selected from the group consisting of linear or branched chain alkylene radical having from 1 to 20 carbon atoms, such alkylene radical comprising one or more chain-interrupting oxygen bridges and/or one or more hydroxyl groups, an aralkylene radical wherein the aryl moiety contains from 6 to 10 carbon atoms and the alkylene moiety is as defined above, such aralkylene radical comprising one or more alkylene chain-interrupting oxygen bridges, and a triazino heterocycle.

Abstract: Disclosed is an anti-corrosive coating composition comprising (a) 100 parts by weight of an unsaturated polyester resin, (b) 10 to 100 parts by weight of a glass flake having an average thickness of 0.5 to 5 microns and an average particle size of 100 to 400 microns, or 10 to 70 parts by weight of said glass flake and 10 to 150 parts of scaly metal pigment, (c) 0.1 to 1.0 part by weight of a ketone peroxide and (d) 0.5 to 2.0 parts by weight of a hydroperoxide and/or a peroxy ester. Also disclosed is a process for forming anti-corrosive coatings, which comprises spray-coating the above anti-corrosive coating composition to a thickness of 300 to 1500 microns by using a spray gun having a spray tip diameter of 0.5 to 3 mm.

Abstract: A flame-retardant, antistatic synthetic polymeric fiber which is the product of the process of coating on said fiber about 1 percent to about 12 percent by weight of a polymer composition which is the reaction product of a cross-linking agent and a polyoxyalkylene compound having as a nucleus a nitrogen containing reactive hydrogen containing compound with a diol which is halogenated.

Abstract: A flame-retardant polyamide composition is described which has good arc tracking resistance. The composition is comprised of a polyamide, a selected organic flame-retardant, melamine or derivative, zinc borate or oxide and glass fiber.

Abstract: A melt-fabricatable or melt-fabricated composition comprising (i) a crystalline thermoplastic aromatic polyetherketone containing the repeat unit ##STR1## alone or in conjunction with other repeat units said polymer having an inherent viscosity of at least 0.7 and (ii) a glass and/or carbon fibre reinforcing agent, which composition is melt-fabricatable into a composition exhibiting, or alternatively (if melt-fabricated) exhibits, an increase in heat deflection temperature (HDT) of at least 3.degree. C. per 1% by weight of reinforcing agent above the HDT of the unreinforced polyetherketone and an increase in flexural modulus of at least 0.2 GN.sub.m.sup.-2 per 1% by weight of reinforcing agent above the flexural modulus of the unreinforced polyetherketone.

Abstract: The holding power of hot melt adhesives is increased by the addition of poly(alpha-methylstyrene) and polyphenylene oxide.

Abstract: Disclosed is a polymerizable resin, a method of polymerizing the resin, and the polymerizate prepared thereby. The resin contains a monomeric diol bis(allyl carbonate) and a copolymer of (a) a vinyl unsaturate and (b) an acrylate of a cycloalkyldiene.