Abstract: A composition comprising an intimate mixture of a segmented thermoplastic polyester copolymer and at least one polyolefin. This composition is improved in recovery from creep at high temperature as well as in ease of hot cutting and adhesion.

Abstract: Flame-proofed linear polyesters containing, as flame-proofing agents, halogenated oligomeric styrenes and synergistic compounds.

Abstract: A glass size composition comprising an epoxy resin emulsion, a polyvinylpyrrolidone and a polyethylene glycol ester mono oleate is particularly suitable for use in epoxy resin filament winding.

Abstract: Blends of alkenyl arene - diene block copolymers with certain acrylic resins having a random copolymer structure exhibit improved adhesion to polyurethane cements and other substrates.

Abstract: Flame retardancy is imparted to curable vinyl-unsaturated polymers such as unsaturated polyesters and diallyl and dimethallyl phthalates, by incorporating with them from about 5 to 50% of total copolymer weight of diallyl tetrabromophthalate, a monomer which copolymerizes with the unsaturated polymer.

Abstract: Thermoplastic elastomeric compositions, comprising blends of high unsaturation diene rubber and thermoplastic olefin resin in which the rubber is cured, exhibit superior physical properties including improved toughness.

Abstract: A plastic by-product can be reprocessed by embrittling the plastic by-product at a low temperature, crushing the embrittled by-product to about the same particle size as that of the virgin plastic, adding fine powder of the same or other material to the thus crushed by-product in order that the fine powder is deposited onto the surface of the crushed by-product, and then raising the temperature of the by-product to room temperature. The thus obtained reprocessed material can effectively be utilized as a bulking filler for the virgin plastic or for the other uses.

Abstract: Impact-resistant thermoplastic molding compositions having a hard component comprising a styrene/acrylonitrile copolymer and a soft component comprising a graft copolymer of styrene and acrylonitrile on a rubbery polymer containing butadiene. The rubbery polymer serving as base for the graft copolymer is produced by polymerization or the monomer of monomers forming said polymer in aqueous emulsion and in the presence of a small amount of an alkanol of from 1 to 4 carbon atoms. The compositions have improved color and color stability and may be processed by conventional methods to form shaped articles.

Abstract: An adhesive composition comprising(A) 100 parts by weight of an elastomer consisting of (I) 30 to 100% by weight of a thermoplastic elastomer expressed by the general formula (S-B).sub.n or (S-B).sub.n-1 --S in which S is substantially a polystyrene block, B is substantially a polybutadiene block, and n is an integer of from 2 to 10, and (II) 70 to 0% by weight of a thermoplastic elastomer expressed by the general formula (S--I).sub.n or (S-I).sub.n-1 --S in which S is substantially a polystyrene block, I is substantially a polyisoprene block, and n is an integer of from 2 to 10, and(B) 50 to 250 parts by weight of a hydrocarbon resin containing 40 to 95% by weight of a 1,3-pentadiene unit and 60 to 5% by weight of an .alpha.-methylstyrene unit in the polymer chain and having a softening point of 60.degree. to 140.degree. C.

Abstract: A low profile unsaturated polyester resin composition comprising (A) a reaction product between (1) a saturated polyester having a molecular weight of 3,000 - 50,000 obtained from a saturated polycarboxylic acid and a polyhydric alcohol and (2) an unsaturated monoglycidyl compounds, (B) an unsaturated polyester, and (C) an unsaturated monomer copolymerizable with the reaction product (A) and the unsaturated polyester (B) which gives a molded articles of improved surface smoothness and dimensional stability without deterioration of strength peculiar to unsaturated polyester resins.

Abstract: Cellular polymeric solids are made by mixing an acidulous or acidic polymerizable medium that is polymerizable and/or cross-linkable by a free radical mechanism (e.g. an unsaturated polyester) with an effective amount of two or more acid sensitive mono- or poly-azo compounds containing the group: ##STR1## wherein Y is an acid sensitive group (e.g.

Abstract: A methylated, methylolated melamine composition having a certain combined formaldehyde content, a certain combined methanol content in the form of methoxymethyl groups, a certain -NH content and a certain content of a free methylol groups, the process of preparing the same and the use of such a melamine composition in admixture with other polymeric materials to provide coating compositions.

Abstract: An oil-resistant, fire-resistant polymer composition is disclosed which is useful in coating electrical conductors. The composition comprises a block copolymer, extending oil, polymeric alpha-olefin, filler and fire retardant package comprising antimony trioxide, an adduct of hexachlorocyclopentadiene and a zinc borate.

Abstract: A process for the non-aqueous dispersion polymerization of a conjugated diolefin monomer, for instance, butadiene or isoprene, in a liquid hydrocarbon dispersion medium, for instance, n-butane or n-pentane with a Ziegler Natta catalyst, for instance, triisobutylaluminum/titanium tetrachloride while said conjugated diolefin is in the presence of a block copolymer dispersion stabilizer. The block copolymer dispersion stabilizer is a copolymer which contains at least two blocks of polymer linked by chemical valences, at least one block (A block) is soluble in liquid organic dispersion medium and at least another block (B block) is insoluble in the dispersion medium and the stabilizer acts to disperse polymers of conjugated diolefins which are formed in the stabilizer's presence. The A block is exemplified by polyisoprene, poly(t-butyl styrene) and poly(vinyl toluene). The B block is exemplified by polystyrene, poly(.alpha.

Abstract: This invention relates to crystallizable polyester compositions having improved molding characteristics. Crystallization rates and properties are improved by the addition of a polymer derived from meta or para diisopropenyl benzene and such polymers terminated by .alpha.-methyl styrene.

Abstract: A process for producing stable urea-aldehyde polymers with high structural strength from two storable liquid ingredients. In this process, partially cured liquid urea-formaldehyde resin is reacted with an aqueous cross-linking solution comprising one or more alkyl or aryl dialdehydes containing two to eight molecular carbons and the hydrogen ion concentration needed to catalyze the completion of the reaction of the dialdehydes and the urea-formaldehyde. The process for producing urea-aldehyde polymers, having improved structural strength and reduced aldehyde vapor emission during their production and prolonged use, is especially effective for manufacturing products for the building industry, such as urea-aldehyde insulating foam, wood-filled particle board, and plywood. The increased polymer strength and the elimination of the hazardous and objectionable aldehyde odor is achieved by maintaining the molecular ratio of total aldehyde moieties to urea to about 1.

Abstract: This invention relates to an improved polymeric polyblend characterized by a blend of (A) a polymer of at least one monoalkenyl aromatic monomer having dispersed therein an amount sufficient to toughen said polyblend of a (B) diene rubber, said rubber being dispersed as crosslinked grafted rubber particles wherein said improvement comprises (C) said diene rubber particles having a rubber moiety structured in a novel morphological form comprising rubber fibers or rubber sheets and mixtures thereof.

Abstract: Thermoplastic molding compositions are disclosed which comprise an intimate admixture of (i) a copolymer of a vinyl aromatic compound and an .alpha.,.beta.-unsaturated cyclic anhydride, including rubber-modified copolymers thereof, and (ii) a radial teleblock copolymer comprising a vinyl aromatic compound, a conjugated diene and a coupling agent. Optionally, the composition can also include a polyphenylene ether resin.

Abstract: The polymeric polyblend comprises a matrix terpolymer of alkenyl aromatic, alkenyl nitrile and acrylate monomers blended with a grafted block copolymer rubber as dispersed rubber particles, said particles being grafted with and having occluded terpolymer of substantially the same composition of said matrix phase. The polyblend is a product of a mass polymerization process having superior toughness and transparency.

Abstract: Compositions comprising a blend of poly(alkylene terephthalates) and an impact modifier which is a multi-phase composite interpolymer comprising a crosslinked acrylic first stage which also contains graftlinking monomer and a final rigid thermoplastic phase. Also claimed is the process for improving the impact strength of poly(alkylene terephthalates) comprising blending therewith the multi-phase composite interpolymer modifier defined above.