Abstract: Compounds having the formula ##STR1## in which R is a member selected from the group consisting of H, CH.sub.2 .dbd.CH--, and CH.tbd.C--, R' is a member selected from the group consisting of --CH.dbd.CH.sub.2 and --C.tbd.CH, and n is zero, 1, 2, 3 or 4, are useful as fluidizers for polyphenylene prepolymers, rendering the latter sufficiently fluid for processing to form high-performance carbonaceous materials. These compounds are also useful themselves as monomers and prepolymers for the formation of the high-performance carbonaceous materials.

Abstract: A rubber mixture vulcanizable with sulphur, a tire tread manufactured from it and also tires with a vulcanized tread are proposed. The rubber mixture contains in each case 100 parts by weight of elastomers, 20 to 80 parts by weight of a copolymer of conjugated diene and vinyl aromatic compound with very low long chain branching manufactured by solution polymerization in a hydrocarbon solvent, 10 to 50 parts by weight of polybutadiene with very low long chain branching, 10 to 30 parts by weight of polyisoprene with a 3,4 bond content of 50 to 70% by weight and 30 to 100 parts by weight of silica as filler material. Through the special combination of the three elastomers with silica as a filler material one obtains an easily processable mixture which leads to vulcanized tire treads with improved grip on wet and dry surfaces.

Abstract: A uniaxially stretched multilayered film obtained by uniaxially stretching a laminated film at a stretch ratio of from 3 to 10 to form many closed fine voids in each layer, said laminated film comprising a base layer (A) made of a resin composition comprising resinous ingredients comprising from 50 to 90% by weight crystalline polyolefin (a) and from 50 to 10% by weight thermoplastic resin (b) having a lower melting point than the crystalline polyolefin (a) and an inorganic fine powder (c) in an amount of from 0 to 35% by weight based on the sum of the weight of the resinous ingredients and, formed on at least one side of said base layer (A), a surface layer (B) made of a resin composition comprising from 20 to 80% by weight inorganic fine powder (d) and from 80 to 20% by weight crystalline polyolefin (e), said uniaxially stretching being conducted at a temperature lower than the melting point of said crystalline polyolefin (a) and lower than the melting point of said crystalline polyolefin (e) but at a tempe

Abstract: A styrenic resin composition with little foul odor is provided. The styrenic resin composition contains:(1) 99.995-95.0 wt % of a styrenic resin which is made from 5-100 wt % of rubbery graft copolymer (A) and 95-0 wt % of styrenic copolymer (B), wherein the rubbery graft copolymer (A) is prepared by graft polymerization of 50 to 90 wt % of vinyl aromatic monomers, 10 to 50 wt % of vinyl cyanide monomers and 0-40 wt % of copolymerizable monomers in the presence of rubbery polymer; and(2) 0.005-5.0 wt % of a sesquiterpene compound (C).

Abstract: Improved elastomeric materials useful for medical and therapeutic device applications, such as penetrable septa, are described. In one aspect, the materials are deeply cleaned with solvent to significantly lower levels of undesirable organics. In another aspect, internally lubricated elastomer compositions compatible for use in medical and therapeutic device applications are provided. The lubricating fluid is present in the composition from about 0.5% to 50% by weight, and is initially substantially homogeneously dispersed in the elastomer. The fluid can be integrated into the elastomer by a solvent infusion method. In another aspect an internally lubricated thermoplastic septum, having an appropriate hardness for resealability with multiple penetrations, is provided.

Abstract: There are provided a pressure-sensitive adhesive and other compositions which free radical cured mixtures of at least one unsaturated elastomeric polymer and at least one organic additive which is substantially nonresponsive to action of free radicals and present in an amount sufficient to modify the properties of the cured elastomeric polymer.

Abstract: A novel polyphenylene resin is formed by the polycyclotrimerization of vinylethynylbenzene, diethynylbenzene and phenylacetylene. Polymerization is carried out under conditions which result in the retention of unreacted vinyl groups from the vinylethynylbenzene component, which are then susceptible to crosslinking. The polymer is useful in the formation of high-performance carbon--carbon composites, producing an unusually high char yield with advantageous handling and processing characteristics.

Abstract: The invention relates to an adhesive resin composition comprising an ethylene polymer having a melting point of 70 to 132.degree. C., a density of 0.88 to 0.94% g/cm.sup.3 and a melt flow rate (MFR) of 0.05 to 50 g/10 min. and/or a modified product thereof with an unsaturated carboxylic acid or its derivative (component A); a tackifier (component B); and a block copolymer containing at least one polymer block mainly composed of a vinyl aromatic hydrocarbon and at least one polymer block mainly composed of a conjugated diene or a hydrogenated product thereof (component C). This composition is useful as an adhesives showing excellent adhesion over a wide temperature range as well as processability by film molding, sheet molding, blow molding, etc. It is available for laminates comprising various kinds of resins such as polyolefins, styrenic resins, polyesters, acrylic resins and polyamides.

Abstract: A novel resin is formed by the copolymerization of vinylethynylbenzene and diethynylbenzene. Polymerization is carried out under conditions which result in the retention of both unreacted vinyl groups from the vinylethynylbenzene component and unreacted ethynyl groups from the diethynyl component, both of which are then susceptible to crosslinking. The polymer is useful in the formation of high-performance carbon-carbon composites, producing an unusually high char yield with advantageous handling and processing characteristics.

Abstract: Disclosed are hot melt adhesives comprising tackifier and a high M.sub.w, narrow MWD, narrow CD ethylene/alpha-olefin copolymer(s) and a low M.sub.w, narrow MWD, narrow MWD ethylene/alpha-olefin copolymer prepared with either supported or unsupported cyclopentadienyl derivatives of Group IV and catalysts for applications in hot melt adhesives, particularly in automotive product assembly, packaging and food packaging. These ethylene copolymers have a M.sub.w ranging from about 20,000 to about 100,000, an MWD of less than 6 and 3 to 17 mole percent comonomer, and composition distribution breadth index above 70 percent. These ethylene copolymer blends have a M.sub.w ranging from about 20,000 to about 100,000 and an MWD of less than 6. In addition, the copolymer blends have comonomer mole percent ranging from about 3 to about 17.

Abstract: This invention provides a radiation cured composition which is curable at low levels of radiation. The composition comprises a crosslinked unsaturated epoxidized diene polymer and a terpene tackifying resin. The invention also encompasses adhesive, coating and sealant compositions made with the above composition.

Abstract: Disclosed is a polyurethane elastomer having a density of from about 100 to about 1100 kg/m.sup.3, and an abrasion loss of less than about 300 mg, as determined in accordance with Test Method A of ISO 4649. Such elastomer can be prepared by reacting a urethane-modified polyisocyanate with at least one polyol in the presence of from about 0.1 to about 10 parts per 100 parts by weight of polyol' of a liquid polybutadiene comprising 1,2-butene, 2,3-(trans)butene and 2,3-(cis)butene moieties, wherein the 1,2-butene content is less than about 50 percent, based on total butene content, and the 2,3 (cis)-butene content is greater than the 2,3-(trans)butene content.

Abstract: The present invention relates to a process for preparing elastomeric thermoplastic blends which comprises the following steps:a) mastication of a blend which comprises a polyolefin elastomer, polyolefin thermoplastic resin and a vulcanizing agent;b) mastication of a blend which comprises the product obtained in step (a), a polyolefin thermoplastic resin and vulcanizing agent.

Abstract: A novel 2-substituted butadiene block copolymer is provided which provides adhesives having superior adhesion and tolerance to oil contaminated surfaces. The elastomeric block has a glass transition temperature of less than about minus 65.degree. C. with the 2 substituent being an alkyl group.

Abstract: The present invention provides a thread wound golf ball having excellent durability, heat resistance and impact resilience, which comprises a core, a thread rubber layer and an outer layer. A thread rubber constituting the thread rubber layer comprising a solid rubber containing a high-cis polyisoprene rubber as a main rubber material and a liquid polybutadiene rubber and/or liquid butadiene-isoprene copolymer rubber as a rubber component.

Abstract: A cyanoacrylate monomer adhesive formulation which has improved thermal properties resulting from the inclusion in the formulation of an effective amount for enhancing the thermal resistance of the cured polymer of a compound of the formula: ##STR1## where R is C(CN).sub.2, C(CO.sub.2 R.sup.e).sub.2, C(SO.sub.2 R.sup.e).sub.2 or C(Ph).sub.2 ; R.sup.a, R.sup.b, R.sup.c and R.sup.d are independently H, monovalent hydrocarbon, halogen or strong electron withdrawing groups; or two of R.sup.a, R.sup.b, R.sup.c and R.sup.d combined form a fused hydrocarbon ring; R.sup.1 is C(CN).sub.2, C(CO.sub.2 R.sup.e).sub.2, C(SO.sub.2 R.sup.e).sub.2 or C(Ph).sub.2, or R.sup.1 and R.sup.b combined form a fused ring having a C(CN).sub.2, C(CO.sub.2 R.sup.e).sub.2, C(SO.sub.2 R.sup.e).sub.2 or C(Ph).sub.2 group in conjugation with R; R.sup.e is alkyl and Ph is phenyl orR and R.sup.1 are both O; and R.sup.a, R.sup.b, R.sup.c and R.sup.

Abstract: There are provided a pressure-sensitive adhesive and other compositions which free radical cured mixtures in which a halogenated hydrocarbon was present during free radical cure, of at least one unsaturated elastomeric polymer and at least one organic additive which is substantially nonresponsive to the action of free radicals and present in an amount sufficient to modify the properties of the cured elastomeric polymer.

Abstract: A film for stretch packaging comprising as a substrate a film of a linear low density polyethylene having a melt flow rate (190.degree. C.), as measured by an ASTM-D-1238E method, of 0.3 to 8 g/10 min., a density, as measured by an ASTM-D-1505 method, of 0.900 to 0.918 g/cm.sup.3, a molecular weight distribution (Mw/Mn) of 2 to 6, two or more melting points existing as measured by a differential scanning calorimeter, a maximum melting point Tm.sub.1 of 118.degree. to 125.degree. C. and a ratio of the height Tm.sub.1 H of the peak of the highest melting point Tm.sub.1 to the height Tm.sub.1 H of the melting point Tm.sub.2 adjacent thereto (i.e., Tm.sub.1 H/Tm.sub.2 H), of 1.3 or less.

Abstract: A duct tape having a non-depositing pressure sensitive adhesive, wherein said duct tape can be removed after application to a surface of a substrate, the duration of the application being indefinitely extended for multiple weeks, without leaving an adhesive residue on the surface of the substrate, where the non-depositing adhesive is a hot melt adhesive based on a SIS Styrenic Block Copolymer rubber having around 40% diblock, that is tackified with an aromatic C-5 resin, and wherein said adhesive has an excellent antioxidant system.

Abstract: An olefinic resin composition which is moldable to shaped articles coatable with coating compositions without primers is prepared by blending (A) a cross-linked olefinic thermoplastic elastomer obtained from a homo- or co-polymer of alpha-olefin (C.sub.2-20) and elastomeric copolymer composed of alpha-olefins (C.sub.2-20), (B) a low-molecular weight modified polypropylene having Mn of 2,000-20,000 which is grafted with maleic anhydride and (C) a tackifier.

Abstract: The present invention is directed to a primer for application to a rubber gasket for its subsequent repair by a room temperature-curable elastomer. The primer comprises masticated rubber, liquid natural rubber, and carbon black dispersed in a solvent therefor. The method for preparing the rubber gasket surface for repair by a room-temperature-curable elastomer by priming the surface with the inventive primer forms another aspect of the present invention. The rubber gasket which has been primed with the inventive primer forms a further aspect of the present invention.

Abstract: A rubber composition having an excellent wear resistance while holding proper hardness, modulus and the like as a vulcanizate comprises a blend of (A) styrene-diene copolymer rubber having specified content of bound styrene, glass transition temperature range and Mooney viscosity and (B) low molecular weight polymer having particular weight average molecular weight, wherein the blending ratio of the copolymer rubber (A) to the polymer (B) is 100 parts by weight to 10-120 parts by weight.

Abstract: Disclosed is a solid golf ball containing at least one rubber portion formed from a rubber composition comprising a base rubber, a co-crosslinking agent and an organic peroxide; an improvement being present in that the base rubber is a mixture of(A) a solid polybutadiene rubber containing cis-1,4 bonds in an amount of at least 40%, and(B) either a liquid polybutadiene rubber or a liquid isoprene-butadiene copolymer rubber, or both.

Abstract: There are provided a pressure-sensitive adhesive and other compositions which free radical cured mixtures of at least one unsaturated elastomeric polymer and at least one organic additive which is substantially nonresponsive to action of free radicals and present in an amount sufficient to modify the properties of the cured elastomeric polymer.

Abstract: There are provided a pressure-sensitive adhesive and other compositions which free radical cured mixtures of at least one unsaturated elastomeric polymer and at least one organic additive which is substantially nonresponsive to action of free radicals and present in an amount sufficient to modify the properties of the cured elastomeric polymer.

Abstract: A cured composition possessing excellent cohesive strength at high temperatures along with excellent adhesion, shear strength and solvent resistance is prepared by the high energy ionizing radiation initiated curing of a polymer composition comprising an alkenyl arene/conjugated diene block copolymer and a oligomer such that the unsaturation index of the composition is minimized. The radiation initiated curing of the adhesive composition is accomplished without requiring the aid of a coupling agent to promote crosslinking of the block copolymer during exposure to the radiation.

Abstract: There are provided a pressure-sensitive adhesive which are free radical cured mixtures of at least one unsaturated elastomeric polymer and at least one organic additive which is substantially nonresponsive to action of free radicals and present in an amount sufficient to modify thr properties of the cured elastomeric polymer which mixture prior to cure has a viscosity of less than about 30 Pascal-seconds at a hot melt application temperature less thant 175.degree. C.

Abstract: A curing composition showing improved drying characteristics of an alkyd coating which comprises:(A) an oxyalkylene polymer having at least one silicon atom-containing group which has a hydroxyl group or a hydrolyzable group bound to a silicon atom and is capable of crosslinking by forming a siloxane bond;(B) a polymeric plasticizer and/or a viscous plasticizer; and(C) an air curing compound.

Abstract: There are provided a pressure-sensitive adhesive and other compositions which free radical cured mixtures of at least one unsaturated elastomeric polymer and at least one organic additive which is substantially nonresponsive to action of free radicals and present in an amount sufficient to modify the properties of the cured elastomeric polymer.

Abstract: Compounds having defined unsaturated alicyclic groups are described which color stabilize aromatic carbonate polymers or blends therewith upon exposure to sterilizing radiation.

Abstract: This invention relates to an environmentally durable composition which has excellent low temperature dynamic properties. The composition comprises a substantially homogeneous mixture of 100 parts by weight elastomer having a fully saturated backbone, curing agent for the elastomer in amounts sufficient to crosslink the elastomer, reinforcing particulate filler, at least 20 parts by weight of an aliphatic oil and paraffinic oil and/or naphthenic oil. Inclusion of the naphthenic oil and/or paraffinic oil with the aliphatic oil improves the overall properties and processability of the elastomer composition. Particulate graphite may be incorporated into the composition to lower its friction.

Abstract: This invention relates to an environmentally durable composition which has superior low temperature dynamic properties. The composition comprises a substantially homogeneous mixture of 100 parts by weight elastomer having a fully saturated backbone, curing agent for the elastomer in amounts sufficient to crosslink the elastomer, reinforcing particulate filler, at least 20 parts by weight of particularly defined polyalphaolefin oil and, preferably, particularly defined paraffinic oil and/or naphthenic oil. Inclusion of the polyalphaolefin oil in the composition improves the low temperature dynamic properties and processability of the elastomer, which are further improved by inclusion of naphthenic oil and/or paraffinic oil therein. Particulate graphite may be incorporated into the composition to lower its friction.

Abstract: Photolytically crosslinkable thermally stable compositions comprising at least one crosslinkable polymer and a crosslinkable quantity of a multifunctional 3,4-disubstituted maleimide. The compositions may be employed to prepare adhesives and photo printing mats.

Abstract: This invention is a rubber composition for a tire tread of 100 parts by weight (pbw) diene system rubber to which are added x pbw of carbon black and y pbw of softening agent. The softening agent contains z pbw of liquid polymer. The amounts of x, y and z are described by the inequalities (5/8)x-20.ltoreq.y.ltoreq.x and (y/5)+5.ltoreq.z. The liquid polymer has a flow points of 20.degree. C. or below. The rubber composition provided here gives a tire tread with improved performance in terms of grade climbing ability, braking and standing start, on ice as well as on snow. Besides, the service life of the rubber is prolonged, and tread performance deterioration is reduced to a minimum.

Abstract: A process for preparing a predispersed fiber composition useful for dispersing discontinuous fibers into a rubber or plastic polymer compound is disclosed which comprises mixing at least about 15 percent by weight of a pourable binder composition with up to about 85 percent by weight of discontinuous fibers at a temperature of from about 40.degree. C. to about 150.degree. C. until a homogeneous predispersed fiber composition is obtained. The binder composition comprises from about 50 to 100 percent by weight of a rubber or plastic polymer, from 0 to about 50 perecnt by weight of a plasticizer or peptizer for the polymer, and from 0 to about 45 percent by weight of critical chemical additives, and is pourable at ambient tmeperature or becomes pourable upon being heated to a temperature of up to about 135.degree. C. and has a Brookfield viscosity of less than about 1,300,000 centipoises at the temperature at which it is pourable.

Abstract: Ethylene propylene copolymer elastomers and ethylene propylene diene terpolymer elastomers are shown which, when cured, exhibit improved oil resistance and chemical aging properties at elevated temperatures and pressures. A previously polymerized liquid 1,2-polybutadiene is incorporated into the elastomer by chemical blending during the polymerization process. Such compositions are useful as electrical insulating materials for use under extreme environmental conditions, particularly in wire and cable constructions.

Abstract: A rubber article with excellent oil resistance and aging resistance to be used in contact with a polyolefin oil or a lubricating oil containing a polyolefin oil, at least the surface of the rubber article being contacted with said oil, said rubber article being composed substantially of a vulcanized product of a copolymer rubber comprising (1) 10 to 60% by weight of units derived from an unsaturated nitrile, (2) 0 to 30% by weight of units derived from a conjugated diene, and (3) 90 to 10% by weight of units derived from an ethylenically unsaturated monomer other than the unsaturated nitrile and/or units resulting from the hydrogenation of units derived from a conjugated diene.

Abstract: Base coat compositions comprise a film-forming resin component selected from one or a mixture of any of alkyd, polyester, acrylic and polyurethane resins, having blended therewith from 1.0 to 15.0% by weight of pigment and from 2.0% to 50.0% by weight of cellulose ester material having the following chemical characteristics:Solution viscosity, seconds--0.05-0.005Acetyl, % by wt.--10.0-15.00Propionyl, % by wt.--0.1-0.8Butyryl, % by wt.--36.0-40.0Free-Hydroxyl, % by wt.--1.0-2.0The compositions when containing pigment such as metallic particles are particularly useful in wet-on-wet automotive finish applications, allowing minimal metallic particle reorientation upon the application thereto of polymeric top coats (particularly those containing solvent), and a considerable increase in solids content.

Abstract: An elastomeric composition of the type used as a jacketing material for electrical wires and cables is shown having improved chemical, water and heat resistance. An ethylene/acrylic elastomer comprising a terpolymer of ethylene, methyl acrylate, and a cure site monomer is used as the base polymer and has blended therewith a polybutadiene. The polybutadiene has greater than 50% 1,2 polymerized units and has a molecular weight between about 1,500 and 25,000 grams/mole.

Abstract: This invention relates to hot melt adhesive compositions which includes a hydrogenated block copolymer block such as Kraton G, about 25 to about 250 parts by weight of a hydrocarbon resin made from a petroleum or coal tar distillate, aliphatic dienes and mono and diolefins, cyclic olefins of 5 to 6 carbon atoms and hydrogenated polycyclics per 100 parts by weight of the hydrogenated block copolymer, and about 25 to about 200 parts by weight of a polybutene or polyisobutylene per 100 parts of the hydrogenated block copolymer.

Abstract: Pressure-sensitive adhesive compositions having decreased resistance to peel removal while maintaining high shear resistance, i.e., holding-power adhesion, in air and in water comprising an elastomeric blend of a selected rubber and a selected olefin terpolymer having a Modulus, M.sub.60, at 60% elongation of from about 1 to about 1.5 and a polydisparity of no more than about 10, a liquid plasticizer, a reinforcing filler and a solid tackifier.

Abstract: Disclosed is a solid golf ball containing at least one rubber portion formed from a rubber composition comprising a base rubber, a co-crosslinking agent and an organic peroxide; an improvement being present in that the base rubber is a mixture of(A) a solid polybutadiene rubber containing cis-1,4 bonds in an amount of at least 40%, and(B) either a liquid polybutadiene rubber or a liquid isoprene-butadiene copolymer rubber, or both.