Abstract: Arylethynyl phthalic anhydrides have been synthesized and shown to have particular application as endcappers or pendant groups in high performance/high temperature thermosets which include amine terminal or amine pendant groups.

Abstract: Microfibrils are formed which include conductive conjugated polymer. These microfibrils are incorporated into polymer admixtures which are thermo-formed into conductive shaped articles.

Abstract: The present invention relates to a heat-sealable and peelable film for polystyrene containers, consisting of at least one thin film comprising a mixture (a) of polystyrene and (b) of one or more copolymer(s) of ethylene and of acrylic derivatives.It also relates to a process for sealing a polystyrene container by means of said film and to the heat-sealed polystyrene container thus obtained.

Abstract: Thermoplastic molding materials containA) 4-94% by weight of a partly aromatic, semicrystalline copolyamide having a triamine content of less than 0.5% by weight and composed of(A.sub.1) 20-90% by weight of units derived from terephthalic acid and hexamethylenediamine,(A.sub.2) 0-50% by weight of units derived from .epsilon.-caprolactam,(A.sub.3) 0-80% by weight of units derived from adipic acid and hexametheylenediamine and(A.sub.4) 0-40% by weight of further polyamide-forming monomers,the amount of components (A.sub.2) or (A.sub.3) or (A.sub.4) or of mixtures thereof being not less than 10% by weight,B) 4-94% by weight of a polyolefin homo- or copolymer or a mixture thereof,C) 2-20% by weight of an adhesion promoter,D) 0-20% by weight of a toughening polymer andE) 0-60 % by weight of additives and processing assistants.

Abstract: A rubber composition suitable for use in grips of articles such as golf clubs, tennis rackets, bicycles and tools, comprising (1) a rubber component containing a blend of an ethylene-propylene-diene rubber (EPDM) and natural rubber, (2) 2 to 40 parts by weight of a transpolyoctenamer per 100 parts by weight of the rubber blend, and (3) a filler containing a hydrated aluminum silicate powder, which provides grips having good non-slipping property, good feeling of touch and good response to mis-shot of golf balls.

Abstract: A process is disclosed for preparing a masterbatch composition of elastomer with a high concentration of aramid fibers, as the sole particulate component, distributed therethroughout.

Abstract: Disclosed herein are block copolymers in which one the repeat units in one type of block is derived from (meth)acrylate esters, and repeat units in a second type of block are derived from .alpha.-fluoroacrylate esters. Also described is a process for making these block copolymers by Group Transfer Polymerization. The block copolymers are useful as for stabilizing emulsions and suspensions and for modifying the surface properties of objects.

Abstract: Blends of biodegradable polymers of hydroxybutyric acid and polyolefines of improved properties are produced by incorporating a compatibilising agent which comprises a block copolymer in which at least half of the mass of one block is represented by alkyl side chains and at least half of the mass of another block is represented by side chains which comprise hydroxy acid residues.

Abstract: Thermoplastic, elastomeric, conjugated diene (e.g., butadiene)/methyl methacrylate block copolymers having elevated Tg and improved impact strength, well suited as polymer impact strength-modifiers and for conversion into pressure-sensitive adhesives, are prepared by (a) anionically polymerizing a conjugated diene monomer in an apolar solvent medium to provide a living polydiene, (b) next adding an alkali metal alkoxyalcoholate ligand to the medium comprising the living polydiene thus formed, (c) block copolymerizing the step (b) living polydiene with methyl methacrylate comonomer to provide a living copolymer, and (d) reacting the step (c) living copolymer with at least one protonic compound, e.g., water, alcohol and/or acid, and completing the polymerization thereof, with the proviso that polymerization of the conjugated diene and the methyl methacrylate comonomers is strictly carried out in the apolar solvent medium, in particular in toluene, benzene or ethylbenzene.

Abstract: A resin composition comprising predetermined amounts of a specific polyamide resin (A), a modified polyphenylene ether resin (B), a fibrous inorganic filler (C) having an average fiber-diameter of 10 .mu.m or less, a powdery inorganic filler (D) having an average particle diameter of 10 .mu.m or less, an epoxy resin (E) and a copper compound (F-1) and/or a powdery phenolic resin (F-2); a molded article formed from the resin composition; and a lamp reflector formed from the molded article. The molded article formed from the above resin composition can give an automotive lamp reflector excellent in resistance to heat generated when a lamp is on, rigidity at high temperatures, clear reflection performance on a mold article surface, adhesion to deposited aluminum and adhesion to a primer coating composition.

Abstract: Carboxyl-containing isobutene copolymers are obtainablea) by cationic polymerization of a mixture of from 1 to 99 mol % of isobutene and from 99 to 1 mol % of a 2-methylalk-1-ene at less than 20.degree. C. in the presence of a halogen-containing Lewis acid andb) subsequent grafting of the isobutene copolymer obtainable in this manner with an .alpha.,.beta.-ethylenically unsaturated carboxylic acid or carboxylic acid derivative at above 100.degree. C. and in the presence of a free radical initiator.Such carboxyl-containing isobutene copolymers are particularly suitable as adhesive raw materials or as sealing compounds.

Abstract: Polymeric blends of polyimide precursor resins and polyamides or polyesters, preferably in the form of liquid crystal polymers, provide polyimide products with excellent physical characteristics and injection molding capability.

Abstract: The present invention relates to ABS (Acrylonitrile-Butadiene-Styrene) resins having excellent impact resistance, low-gloss properties and superior heat resistance, and to a process for preparing them. In particular, between 5 wt % and 20 wt % butadiene rubber having double bonds is dissolved in between 30 wt % and 70 wt % graft-copolymerizing aromatic vinyl monomer and between 10 wt % and 50 wt % cyanized vinyl monomer. Polymerization controller and radical initiator are added to the above, and the mixture polymerized in a first step of bulk polymerization at a temperature of 80.degree.-120.degree. C. while stirring until polymerization proceeds to between 20 and 50% of completion. Between 40% and 70% .alpha.-methyl styrene monomer, between 10 wt % and 40 wt % unsaturated nitrile and between 5 wt % and 15 wt % butadiene rubber are then added to the polymerized mixture and the resulting mixture stirred for 30-60 minutes in a second step of bulk polymerization.

Abstract: The present invention relates to impregnating solutions consisting:of an active principle A+B in which: A denotes at least one thermoplastic poly(imide-amide) oligomer functionalized at the chain ends with an alkenyloxy, maleimido or nadimido group, B denotes a coreactant chosen from: B1=an imide ingredient, B2=an acrylate ingredient, B3=an alkenylphenol ingredient, B4=a novolac resin, B5=a vinyl ingredient, B6=an epoxy resin, B7=an amino ingredient and B8=a mixture of a number of ingredients B1 to B7;and of one or a number of aprotic polar solvent(s), the concentration of the active principle in the solution being between 2 and 80% by weight.These solutions are employed especially for the production of preimpregnated intermediate articles.

Abstract: A polymeric thickener, emulsifier or suspension aid having improved wettability which is an interpolymer of at least one olefinically unsaturated carboxylic acid containing at least one activated carbon-to-carbon olefinic double bond and at least one carboxyl group, in an amount of more than 15% by weight based upon the weight of the interpolymer, and at least one steric stabilizer surfactant having at least one hydrophilic moiety and at least one hydrophobic moiety and a linear block or a random comb configuration, or mixtures thereof, where the interpolymer has admixed therewith a wetting additive such as a low surface tension surfactant, a glycol, a polyhydric alcohol or mixtures thereof, and a process for dispersing the interpolymer by adding a low surface tension surfactant to the water into which the interpolymer is being dispersed.

Abstract: A core functionalized star block copolymer formed of a vinyl aromatic hydrocarbon and/or a conjugated diene and a polyalkenyl aromatic coupling agent wherein the core functionalization is provided by reaction of the star polymer core with an asymmetric bi- or polyfunctional capping agent.

Abstract: The present invention relates to a process for preparing high melt flow rate thermoplastic compositions that have improved impact and bruise-resistance properties and to the thermoplastic composition that are produced by the process of the instant invention. Specifically, the process comprises the steps of precontacting a non-crosslinked elastomeric polymeric component with a peroxide compound at a temperature below the decomposition temperature of the peroxide and below the melting point of the non-crosslinked polymeric component to produce a peroxide adsorbed polymeric component; and melt mixing the aforementioned peroxide adsorbed polymeric component with a high propylene content polymeric component selected from the group consisting of homopolymers of propylene, block copolymers of propylene and ethylene, and thermoplastic olefin polymers at a temperature above the decomposition temperature of the peroxide.

Abstract: An improved hot melt adhesive with low self-adhesion. The adhesive is useful for disposable articles and employs a S-EB-S block copolymer. The adhesive does not require a release liner and has superior stay-in-place properties.

Abstract: Molding materials are composed ofA) from 5 to 95% by weight of polyaryl ethers,B) from 5 to 95% by weight of a mixture (B) ofB.sub.I) from 75 to 97% by weight of partly aromatic polyamides andB.sub.II) from 3 to 25% by weight of a rubber impact modifierand furthermoreC) from 0 to 40% by weight of additives and/or processing assistants.

Abstract: A thermoplastic resin composition containing a polyamide resin composition (C) consisting of a polyamide resin (A) and another thermoplastic resin (B) and at least one modifier (D) is excellent in coatability, mechanical properties, linear expansion coefficient and appearance, can be molded into an article which comprises the polyamide resin (C), wherein the ratio of the percent occupied area of the polyamide resin on the surface of the article to the weight percentage of the polyamide in the polyamide resin composition (C) is not less than 1.2, and/or the ratio of the percent concentration of the polyamide resin on the surface of the article determined on the basis of the nitrogen concentration on the surface of the article to the weight percentage of the polyamide in the polyamide resin composition (C) is not less than 1,2, which article is suited for electric and electronic parts and automobile parts such as a bumper, fender and wheel cover.