Abstract: Described are novel thermosetting maleimide compositions suitable for making cured resins, prepregs and tough thermoset composites. The thermosetting compositions comprise a multifunctional maleimide and terminally unsaturated polyamide, polyimide, or polyamideimide oligomer which is soluble in the composition. The cured resins have a fracture toughness, K.sub.ic, of at least 1.0 MPam.sup.1/2 and a glass transition temperature of at least 200.degree. C.

Abstract: Homogenous blends of polyetherimide polymers and ethylene vinyl acetate copolymers prepared by solution blending techniques or melt blending are characterized by high impact strengths. Further disclosed are laminates of polyetherimide and ethylene vinyl acetate copolymers that are characterized by strong bonding strengths between the layers of the laminates.

Abstract: Polytriazines exhibiting improved toughness without sacrificing heat resistance are prepared by curing a cyanate ester resin having dispersed therein resin-insoluble rubber particles grafted with a resin-soluble polymer. The resin-soluble polymer stabilizes the rubber particles and maintains the particles in an essentially discrete, nonagglomerated form.

Abstract: A thermotropic liquid crystal polyester consisting essentially of ethylene glycol residue, terephthalic acid residue and parahydroxybenzoic acid residue wherein the mol ratio of ethylene glycol residue to terephthalic acid residue is substantially about 1:1 and the mol ratio of terephthalic acid residue to parahydroxybenzoic acid residue is in the range of about 5:95 to about 25:75, the polyester having an intrinsic viscosity of at least about 0.5 dl/g measured in a 50:50 by weight solvent mixture of phenol and 1,1,2,2-tetrachlorethane at 20.degree. C., and a transmittance of at least about 80% to 530 nm light at a light path length of 10 mm measured using a 0.4 wt. % solution of the polyester in said solvent mixture. A method for forming the thermotropic liquid crystal polyester is also disclosed. The liquid crystal polyester of the present invention is useful for injection molding applications and various extrusion molding purposes, such as the manufacture of films, sheets, fibers, pipes, etc.

Abstract: High green strength curable urethane adhesive compositions of a polyol, an organic isocyanate compound, a thermoplastic polyurethane which is soluble in methyl ethyl ketone to at least 1 weight percent for imparting tack and green strength properties to the composition, and, optionally, a solvent for controlling the percent solids and viscosity of the composition.

Abstract: A high impact polyamide composition comprising at least one polyamide, at least one ethylene ionomer resin and at least one oxide or carbonate compound is specific weight proportions, wherein the polyamide has a relative viscosity of at least 3.15 in 98% sulfuric acid. The composition may further comprise an elastomeric olefin copolymer, an elastomeric styrene copolymer and/or a polyvalent alcohol. The polyamide composition has excellent mechanical strength, thermal resistance and impact strength even at weld-line portions so that it can advantageously be employed for manufacturing various shaped articles, such as automobile parts and sporting goods.

Abstract: An article, suitable for use as a body implant, is made from a novel composition comprising a multiple phase polymer composition comprising:(a) a first phase which comprises a substantially non-hydrophilic polymeric component; and(b) a second phase which comprises a hydrophilic polymeric component;said composition (i) being capable of absorbing water to an extent that it softens with a softening ratio of at least about 2:1 and/or swells with a swelling ratio of at least about 1.3:1; and (ii) when substantially completely hydrated has an energy to break of at least about 700 N-cm/cm.sup.3 and a 2.5% Secant modulus of less than about 7,000 N/cm.sup.2.

Abstract: Disclosed are novel thermoplastic compatible compositions comprising a polyolefin, a thermoplastic polyurethane, and a compatibilizing amount of at least one modified polyolefin.The polymer blends are soft, flexible, resinous compositions of high tensile and tear strengths. The compositions overcome the barrier of incompatibility between polyethylene and thermoplastic polyurethanes.

Abstract: Dispersions of core-shell polymers in caprolactam solutions of telechelic polymers capable of being polymerized to form rubber-modified nylon-6 block copolymers having improved impact strength wherein the core-shell polymer comprises a cross-linked elastomer core and a hard thermoplastic polymer shell and wherein the telechelic polymers preformed or formed in situ, are capped with lactam polymerization initiator groups.

Abstract: A composite having a flexural modulus greater than 100,000 psi and excellent heat and damage resistance, consisting essentially of 5-45 weight percent of a vinyl thermoset copolymer and 55-95 weight percent of a polyurea (wherein the reaction product of the isocyanate and diamine chain extender constitutes 50-75 per cent by weight of the polyurea) is prepared by reacting, a mixture comprising:(a) an ethylenically unsaturated component containing at least one ethylenically unsaturated monomer optionally therewith, one or more ethylenically unsaturated high molecular weight compounds;(b) a polyoxyalkylene polyamine;(c) a diamine chain extender;(d) an aromatic polyisocyanate; and(e) a curing agent by the reaction injection molding technique. In particular Component B comprising constituents (a), (b) and (c) is combined with Component A comprising constitutents (d) and (e). Component A may further contain the monomer of constituent (a).

Abstract: A resin composition comprising;100 parts by weight of a mixture comprising (a) from 5 to 95% by weight of polyamide and (b) from 95 to 5% by weight of a thermoplastic polyester; and(c) from 0.5 part to 40 parts by weight of a grafted polyolefin modified product formed by graft polymerization of an addition polymer having a peroxy bond in its molecular chain to a modified polyolefin having a functional group in its molecular chain; and a molded product thereof.

Abstract: Described herein are miscible blends of polycarbonomides, defined as amide and/or imide containing polymers, and a polyarylate or arylate-carbonate copolymer which are useful in the manufacture of extruded sheets, high temperature connectors, aircraft and mass transportation vehicle interiors, injection molded articles, and extruded profiles and thermoformable articles.

Abstract: Thermoplastic blends of polyamide with a resin selected from the group consisting of polycarbonate, poly(ester-carbonate), and polyarylate have improved physical properties with the incorporation therein of an epoxy functional compatibilizing agent.

Abstract: Mixtures of imidized acrylic polymers and polyamides are described which have good flexural modulus properties.

Abstract: Novel modified polyphenylene ether-polyamide compositions comprising polyphenylene ether, polyamide and a polycarboxylic acid and the reaction product thereof and an improved process for preparing the same.

Abstract: The invention relates to new graft polymers based on elastomers as the graft base and grafted-on vinyl monomers, their preparation and blend thereof with polyamides.

Abstract: A resin composition suitable for injection molding, having excellent abrasion resistance, comprising (A) a thermoplastic injection moldable resin component containing a first thermoplastic injection moldable styrene-based resin and a second thermoplastic injection moldable resin different from said first resin and (B) a polyamide-based block copolymer.

Abstract: Disclosed are blends of (a) a polyetherimide and (b) a liquid crystal polymer. The liquid crystal polymer is an aromatic copolyester which exhibits melt anisotropy. The blends exhibit a higher heat distortion temperature higher flexural modulus and specific gravity over the polyetherimide component alone and have a higher tensile strength than that associated with the liquid crystal polymer alone.

Abstract: A thermoplastic polymer composition containing (a) a polyester or polyamide thermoplastic polymer and (b) a block graft copolymer which comprises (i) as the backbone portion at least one of a block copolymer or a hydrogenated block copolymer containing blocks of a styrene-type polymer and blocks of a butadiene-type polymer, and (ii) as the graft portion a radical disintegrative polymer, said block graft copolymer having been chemically modified with molecular units containing a functional group which will combine or interact with said thermoplastic polymer a). The thermoplastic polymer composition is superior in flexibility, resistance to chemicals and oil, impact resistance, moldability and elasticity.

Abstract: A water-dispersible graft copolymer of a polyamide and at least one acrylic monomer is prepared by reacting the polyamide with the acrylic monomer(s) in an alcohol solution in the presence of a free radical peroxidic initiator. The graft copolymer is particularly useful as the resin component of a water-based printing ink.