Abstract: Rubber modified styrene-acrylonitrile polymers (ABS) having three different types of rubber particles. One type is small, usually emulsion-produced particle. The second is a large emulsion-produced particle. The third is a large, mass-produced particle. Such compositions exhibit good combinations of toughness and gloss.

Abstract: Block copolyesters based on polyalkylene terephthalates which contain polydiene blocks show an extremely low deformation even when they are processed into thin articles. They still have a crystallinity which is decreased by less than the ratio corresponding to the polydiene portion.

Abstract: A method for radical cross-linking or organic polymers, is disclosed which uses a cross-linking enhancer of the following formula ##STR1## wherein R is alkenyl or alkynyl;R.sup.1 is alkylene, alkenylene, alkynylene or --(R.sup.2 --O).sub.m --R.sup.2 --, R.sup.2 is CH.sub.2, (CH.sub.2).sub.2, (CH.sub.2).sub.3 or CH.sub.2 --CH(CH.sub.3), and m is 1 to 50; and n is 1 to 10.

Abstract: This invention specifically relates to blends of grossly incompatible polymers (polyethylene terephthalate and rubber) which are blended with a dispersion stabilizer (compatibilizing agent) to obtain optimum properties, particularly impact strength. The dispersion stabilizers disclosed herein are alkenyl succinic anhydrides wherein said alkenyl group contains from 8 to 30 carbon atoms; alkyl succinic anhydrides wherein said alkyl group contains from 8 to 30 carbon atoms; and dimers, oligomers, and polymers of the structural formula: ##STR1## wherein x and y are integers, wherein R and Z can be the same or different, wherein R and Z are selected from the group consisting of alkyl moieties containing from 1 to 30 carbon atoms, alkenyl moieties containing from 2 to 30 carbon atoms, and hydrogen, wherein the total number of carbon atoms in R and Z is between 8 and 30, and wherein the indicates that the repeat units can be distributed in any order.

Abstract: There is provided a novel acrylic two-part adhesive suitable for structural uses composed of a liquid I comprising an acrylic monomer and an organic peroxide and a liquid II comprising an acrylic monomer and a curing accelerator. At least one of the liquid I and II further contains a diene-elastomer, and the liquid I or both the liquids further contain an ion-containing unsaturated polyester. The unsaturated polyester is further characterized in that it has one or more polymerizable or copolymerizable double bonds and its remaining carboxylic group is neutralized with a metal compound, ammonia or an amine.

Abstract: A thermosetting molding composition containing unsaturated polyester and carboxy-containing rubber exhibit improved surface gloss of molded articles when the composition further contains an unsaturated ester/potassium salt of phosphoric acid, such as potassium oleyl phosphate.

Abstract: A hot melt composition is provided which comprises (1) a hydrogenated resin (II) having a softening point ranging from 50.degree. C. to 140.degree. C., said hydrogenated resin (II) being prepared by hydrogenating a copolymer resin (I) obtained by copolymerizing 20 to 60 wt % of a component (A) selected from the group consisting of five-member cyclic compounds each having a conjugated double bond and represented by the general formula (A) given below and Diels-Alder addition products thereof (A):GENERAL FORMULA (A): ##STR1## wherein H is hydrogen; R is an alkyl group having from 1 to 3 carbon atoms; m and n are zero or integers of not less than 1 and are in the relation of m+n=6;with 25 to 70 wt % of a codimer (component B) of said five-member cyclic compound and an aliphatic conjugated diolefin having 4 to 5 carbon atoms and 2.

Abstract: Particles of two different normally solid materials are caused to react by generating free radicals on the surfaces of at least one of the solids by mechanical working, suitably by comminution, at cryogenic temperatures. At least one of the solids is preferably a polymeric material while the other may be a different polymer, a catalyst, a lubricity enhancing material, a filler, a pigment or the like.

Abstract: Novel peroxyketals having the general formula ##STR1## are provided, wherein R.sup.1 represents a tert. alkyl group having 4-12 carbon atoms and R.sup.2 represents a branched or a non-branched alkyl group having 1-12 carbon atoms or a substituted or unsubstituted cycloalkyl group having 5-12 carbon atoms. The peroxyketals can be used to advantage for initiating the copolymerization reaction of ethylenically unsaturated compounds such as unsaturated polyester resins containing both an unsaturated polyester and an ethylenically unsaturated monomer such as styrene.

Abstract: The addition of a select group of crosslinkable vinyl monomers to low shrinking polyester molding compositions containing unsaturated polyesters results in moldings with improved surface characteristics.

Abstract: A stable organic polymer-polyol-alkali metal silicate emulsion is produced by mixing an aqueous solution of an alkali metal silicate or alkali metal metasilicate pentahydrate, a liquid polyol, an organic polymer in a fluid state, and a small amount of an acid while heating the mixture to 40.degree. C. to 100.degree. C. and agitating until the mixture emulsifies. The emulsion may be used to produce organic polymer-polyurethane silicate foams and resinous product.

Abstract: Unsaturated polyester resin compositions that have a low shrinking property, and at the same time, an enough strength are provided. The compositions comprises (1) 30-70 parts by weight of an unsaturated polyester obtained by reacting terephthalic acid and/or isophthalic acid and one or more of unsaturated acids selected from the group consisting of maleic anhydride, maleic acid and fumaric acid, with a glycol, and having the unsaturation degree of 1.5-5.0 and the acid value of 18-40, (2) 70-30 parts by weight of .alpha.,.beta.-ethylenically unsaturated monomer, and (3) 5-30 parts by weight of a thermoplastic resin having the number average molecular weight of 5,000-500,000.

Abstract: Hot melt adhesive compositions having low melt viscosity and high adhesive strength are disclosed. The compositions include polyesters comprising 1,6-hexanediol and terephthalic acid, blended with a polymeric material comprising a vinyl aromatic polymer derived from a monomer of the formula ##STR1## wherein R is hydrogen or an alkyl group containing 1 to 4 carbon atoms and R.sub.1 is hydrogen, chlorine, alkyl from 1 to 4 carbon atoms or phenyl.

Abstract: An intimate polyblend of about 5-90% by weight of a thermoplastic copolyester or block copolyester elastomer and about 95-10% by weight of a vulcanizable synthetic or natural rubber. The preferred copolyester is a copolyester of polybutylene terephthalate and the prefered block copolyetherester is polybutylene terophthalate-poly (tetramethylene oxide) glycol block copolyester. These polyblends can be vulcanized to elastomeric molded articles which exhibit an excellent oil and oxygen/ozone resistance even at elevated temperatures, a high impact strength, an increased scuff resistance and an improved flexibility at low and high temperatures. The vulcanized molded articles also have an improved adhesive property with polyester fibers or fabrics.

Abstract: A thermosettable composition comprising (1) an unsaturated polyester, (2) a block copolymer of a lactone, a conjugated diene and, optionally, a monovinylarene, and (3) a vinyl monomer is provided which shows improved compatibility and stability over a composition in which the block copolymer does not contain a polylactone block.

Abstract: Polyarylene ester compositions comprising an intimate admixture of polyarylene ester and up to about 10 weight percent of an elastomeric ethylene 1-alkene copolymer. The compositions possess greatly improved impact resistance and reduced notch sensitivity in comparison with the polyarylene ester and exhibit improved melt flow with minimal loss in flame retardance, heat distortion resistance and tensile properties. The compositions are useful as molding powders and sheet extrusion compounds.

Abstract: The foaming of resinous insulating materials under vacuum is substantially reduced by adding to the material a polydiene having primarily vinyl unsaturation.

Abstract: A photosetting composition useful as a coating varnish comprising a modified, epoxidized butadiene polymer, at least one photopolymerizable monomer and a photosensitizer, the modified, epoxidized butadiene polymer comprising (1) an epoxidized butadiene polymer backbone group, (2) 5 to 50 aromatic or cyclocyclic polybasic carboxylic ester side chain groups per 100 butadiene units, each having at least one acryloyl or methacryloyl terminal group and a linking group formed by a reaction between a carboxylic acid radical in the polybasic carboxylic ester and an epoxy radical in the epoxidized butadiene polymer and, optionally, (3) 0 to 50 phosphoric ester additional side chain groups per 100 butadiene units, each having a linking group formed by a reaction between a hydroxyl radical attached to a P atom in the phosphoric ester and an epoxy radical in the epoxidized butadiene polymer.

Abstract: Molding compositions comprising terminally unsaturated polyesters, vinyl or vinylidene compounds copolymerizable therewith and elastomeric polymers have an excellent impact strength and a good heat distortion temperature, strength and rigidity.

Abstract: Dimensionally stable, pigmentable polyester molding compositions comprise:(A) a polymerizable polyester component; and(B) an additive component comprising discrete particles of less than about 50 microns diameter of a lightly cross-linked styrene terpolymer having a glass transition temperature of below about 100.degree. Celsius and which is chemically inert with respect to the polyester component and is swellable but insoluble therein. The additive component is the reaction product of styrene, an unsaturated monofunctional comonomer and a polyfunctional monomer such as divinyl benzene.

Abstract: A flame-retarding thermoplastic polyester resin composition comprising (1) a polyester obtained from a terephthalic acid or an alkyl ester thereof and a glycol having 2 to 4 carbon atoms, (2) an organohalogen compound, (3) an inorganic flame-retarding supplementary agent, and (4) at least one polymer selected from a saponified polyvinyl acetate having a saponification degree of greater than 50%, an ethylene/vinyl acetate copolymer and a saponified ethylene/vinyl acetate copolymer, and optionally (5) a reinforcing agent; and a process for production thereof.

Abstract: Polyvinyl halide or polyvinyl graft copolymers intimately mixed with a polyester derived mainly from an halogenated bicycloheptene carboxylic acid or anhydride such as chlorendic acid or anhydride and an alkylene glycol or alkylene oxide such as ethylene oxide are provided. The graft copolymers of the invention are obtained by polymerizing a vinyl halide in bulk in contact with an olefin polymer. The graft copolymer compositions of the invention have good clarity and provide improved processing characteristics and increased impact strength without reduction in heat distortion resulting from the addition of the polyester. The improved impact strength polyvinyl halide compositions of the invention can include blends of the polyester of the invention with modifying compounds, such as alkyl methacrylate-butadiene/styrene graft polymer impact modifiers and halogenated polyvinyl chloride. Blends of vinyl halide polymers with the polyesters of the invention provide compositions having improved processability.

Abstract: Polymerizable unsaturated polyester compositions are provided, particularly useful in the manufacture of multilayer laminates, consisting essentially of(1) a polyester of a polyhydric alcohol and a polycarboxylic acid, at least one of which is ethylenically unsaturated;(2) a monomer copolymerizable with the unsaturated polyester and having a boiling point below 150.degree. C.;(3) an additive forming a film on the polyester surface that inhibits volatilization of monomer from the polyester composition; and(4) a hydrophobic compound soluble at least in part both in the unsaturated polyester and in the film-forming additive that either(a) has an isoprene unit structure, or(b) is acyclic and has at least one ester and/or ether bond; and at least two terminal hydrocarbon groups, each with at least one ethylenically unsaturated group.

Abstract: Terminally unsaturated liquid epihalohydrin polymers are produced by polymerizing at least one epihalohydrin using acrylic acid or methacrylic acid as a modifier. The polymerization is conducted in the presence of a catalytic amount of a trialkyl oxonium salt of an HMF.sub.6 acid wherein M is an element selected from the group consisting of phosphorus, arsenic and antimony. The polymers are useful as tougheners for unsaturated polyester resin systems.