Abstract: The addition of small amounts of low molecular weight visco-elastic rubber material to rubber-modified polypropylene has been Found to reduce the severity of flow marks that occur on the surface of injection molded articles.

Abstract: The ethylene/.alpha.-olefin/diene rubber composition of the present invention is a specific ethylene/.alpha.-olefin/diene rubber composition comprising a high-molecular ethylene/.alpha.-olefin/diene copolymer rubber (A) having a specific molecular weight distribution, a specific intrinsic viscosity [.eta.] and a specific iodine value, and a low-molecular liquid ethylene/.alpha.-olefin copolymer (B) having a specific intrinsic viscosity [.eta.]. This ethylene/.alpha.-olefin/diene rubber composition of the invention is excellent in both the processability (flowability) and the shape retention properties in the vulcanization molding process, and the rubber composition can provide a vulcanized rubber molded product which is excellent in surface smoothness, mechanical strength, low-compression permanent strain properties, resistance to abrasion and resistance to dynamic fatigue.

Abstract: The use of C.sub.1 -C.sub.5 alkyl butyrates, d-limonene, ethylene glycol monobutyl ether and C.sub.5 -C.sub.20 petroleum distillates and normal paraffins in place of methyl chloroform (1,1,1-trichloroethane) in conventional waterborne packaging and converting adhesives provides comparable or better adhesive products with reduced environmental and health related problems.

Abstract: A method method for continuously preparing thermo-crosslinkable and/or thermoplastic elastomer blends by mixing the powdered or granulated elastomer with plasticizer oil and other additives, said method comprising the steps of:(a) continuously premixing said elastomer in a premixer with at least part of said plasticizer oil, and optionally with at least part of said other additives, to form a preblend in which said elastomer is decomposed and said additives are embedded in the polymer matrix;and thereafter(b) continuously completing the mixing of said premix, and optionally of the remainder of said additives in a mixing extruder.

Abstract: The present invention provides an external lubricant composition for lead stabilized vinyl polymer. The external lubricant functions as both an external lubricant and a processing aid by speeding fusion and thus, obviates the need for a separate processing aid. The external lubricant comprises an effective amount for lubricating vinyl polymer of polyethylene having a Brookfield viscosity at a temperature of 150.degree. C. of between about 1000 and about 100000 centipoises and an acid number as determined by standardized titration of KOH of between about 1 and about 40.

Abstract: A polymer composition substantially comprising(A) 5 to 40 weight parts of a 1-butenic polymer,(B) 95 to 60 weight parts of an inorganic filler,(C) a hydrocarbonic oil in an amount of 2 to 20 weight parts per 100 weight parts in total of the above (A) and (B), and(D) a thermoplastic resin other than 1-butenic polymers in an amount of 0 to 20 weight parts per 100 weight parts in total of the above (A) and (B).

Abstract: The present invention provides an external lubricant composition for calendered vinyl polymer. The external lubricant provides rigid vinyl polymer compositions having improved plate out resistance, clarity, release, and stability. The external lubricant comprises an effective amount for lubricating vinyl polymer of polyethylene having a Brookfield viscosity at a temperature of 150.degree. C. of greater than about 85,000 centipoises and an acid number as determined by standardized titration of KOH of between about 5 and about 9.Sheets of the calendered vinyl polymer are used for blister packs and credit cards.

Abstract: The invention provides an olefinic thermoplastic elastomer composition which is excellent in flexibility, processability into sheet and appearance of the resulting sheet and which is able to substitute for flexible polyvinyl chloride. The invention further provides a covering material for industrial parts comprising said composition and a laminate comprising said covering material.The composition comprises a partially crosslinked thermoplastic elastomer I containing an oil-extended olefinic copolymer rubber comprising an olefinic copolymer rubber having a Mooney viscosity of 200-350 or the thermoplastic elastomer I and a partially crosslinked thermoplastic elastomer II containing an oil-extended olefinic copolymer rubber comprising an olefinic copolymer rubber having a Mooney viscosity of 120 or higher and lower than 200 and the composition has a specific viscoelastic characteristics.

Abstract: The present invention relates to a readily molded engineering plastic composition comprising:polyphenylene ether polymer; optionallya second polymer chosen from polyesters, polyamides and polycarbonates; andabout 0.05 to about 5 weight percent hydrogenated poly (alpha-olefin) fluid.

Abstract: A composition of matter especially for the formation and development of wear surfaces of decorative or aesthetic character is provided which comprehends a matrix and discrete reforcing elements embedded in the matrix. The matrix is resin-based with the resin being hydrogenated bis-phenol A which is mixed with a suitable low profile additive, a catalystic agent, a flame retardant, an extender, and a inhibitor while the reinforcer is constituted of glass fiber particles.

Abstract: The improved resin composition that comprises (A) 99-40 parts by weight of a 4-methyl-1-pentene based polymer, (B) 0-30 parts by weight of a butene based liquid polymer having a kinematic viscosity of 2-5000 cSt at 100.degree. C. and (C) 1-30 parts by weight of a butene-1 based solid polymer, with the sum of (A)+(B)+(C) being 100 parts by weight. The resin composition is excellent in heat resistance, flexibility, and impact resistance.

Abstract: The composition of the present invention comprises a oil-resistant silicone rubber composition that undergoes little swelling even when used in regular or continuous contact with mineral oil-based lubricating oil such as engine oil and so forth. The oil-resistant silicone rubber composition comprises:(A) a dimethylsiloxane-3,3,3-trifluoropropylmethylsiloxane-methylvinylsiloxane copolymer gum that contains 0.001 to 5 mole percent methylvinylsiloxane unit,(B) a hydrocarbon oil or diorganopolysiloxane oil wherein the total in each diorganopolysiloxane oil molecule of the number of silicon-bonded hydrogen atoms and the number of functional groups reactive with component (A) or (C) is less than two,(C) a reinforcing filler, and(D) a curing agent in a quantity sufficient to cure the composition.

Abstract: A composition of an oil-soluble, olefin-based polymer and an oil-soluble polar polymer having nitrogen functionality, wherein the polymers in combination in oil exhibit incompatibility as evidenced by phase separation, shows improved compatibility by addition to the mixture of certain hydrocarbyl substituted hydroxyaromatic materials.

Abstract: Skin barrier paste compositions free from organic solvents comprised of at least a rubber component and a filler component wherein the rubber component includes a liquid rubber having an average molecular weight of about 1,000 to about 80,000 and a viscosity of about 200 poise to about 6,000 poise at 40.degree. C., the rubber component being present in the paste composition in the range of about thirty percent to about seventy percent by weight. The present inventive paste compositions can be freely formed with the fingertips or a spatula; they are less irritating to the skin, mucosa and/or the injured area; and they are less susceptible to a viscosity change when exposed to the atmosphere, thus assuring an ease of application and a stable paste formulation when stored in a container.

Abstract: An adhesive composition is comprised of a mixture of an EVA copolymer and two tackifying resins, a high temperature tackifying resin and a low temperature tackifying resin. The viscosity of the adhesive composition is between 2,000 cps to 80,000 cps over a temperature range of 250.degree. F. to 380.degree. F. The composition comprises 60% by weight of the copolymer, 15% by weight of the low temperature tackifying resin and 25% by weight of the high temperature tackifying resin.

Abstract: An olefin thermoplastic elastomer composition prepared by subjecting a composition comprising (a) 100 parts by weight of an ethylene-.alpha.-olefin-non-conjugated diene copolymer rubber having a high molecular weight, the Mooney viscosity (ML 1+4, at 125.degree. C.) of a composition consisting of 100 parts by weight of the copolymer rubber and 75 parts by weight of a mineral oil-type softening agent being 40 or more, (b) from 10 to 500 parts by weight of a crystalline ethylene-propylene block copolymer resin having a melt flow rate of 10 to 50, (c) from 3 to 300 parts by weight of a mineral oil-type softening agent, and (d) from 5 to 100 parts by weight of a low-molecular-weight propylene homopolymer resin having a number-average molecular weight of 2000 to 20000, the weight ratio of the low-molecular-weight propylene homopolymer resin to the crystalline ethylene-propylene block copolymer resin being 0.8 or less, to dynamic vulcanization using, as a vulcanizing agent, from 0.

Abstract: A pre-formed composition having essentially no yield point comprising a blend of:(a) at least about 50 percent by weight of a copolymer of ethylene and a 4 to 8 carbon atom alpha-olefin having a density in the range of 0.880 to 0.915 gram per cubic centimeter; a melt index of no greater than about one gram per 10 minutes; long chain branching in an amount of about 0.5 to about 1.5 long chains per 1000 carbon atoms; and a molecular weight of at least about 200,000; and(b) at least about 5 percent by weight of a copolymer of ethylene and vinyl acetate or a copolymer of ethylene and ethyl acrylate, the percent by weight being based on the combined weight of components (a) and (b).

Abstract: Improved properties during aging are demonstrated by thermoplastic polymer compositions comprising selectively hydrogenated vinylaromatic compound/conjugated alkadiene block copolymer, thermoplastic engineering polymer and a poly(alkylene) plasticizer.

Abstract: A rubber composition containing (A) 100 parts by weight of an amorphous or low-crystalline ethylene-.alpha.-olefin copolymer rubber having an ethylene content of 70 to 90 mole %, a molecular weight distribution (Mw/Mn) of 3.0 or more and a Mooney viscosity ML.sub.1+4 (100.degree. C.) of 5 to 80; and (B) 1 to 120 parts by weight of a liquid ethylene-.alpha.-olefin random copolymer having an ethylene content of 40 to 90 mole % and an intrinsic viscosity [.eta.] of 0.01 to 0.4 dl/g as measured in decalin at 135.degree. C.

Abstract: A two-phase thermoplastic composition adapted for forming thermoplastic patterns. The composition comprises an organic thermoplastic pattern material and at least about 5% by weight of discrete particles of cross-linked poly(methylmethacrylate) that are physically stable at temperatures above 130.degree. F. Also disclosed are investment casting patterns of such composition and processes utilizing such composition.

Abstract: A silicone putty composition having high impact resilience immediately after preparation and providing a soft silicone putty having low plasticity is obtained by blending (1) a diorganosiloxane of the formula:R.sub.n SiO.sub.(4-n)/2wherein R is a substituted or unsubstituted monovalent hydrocarbon group and n is a number of from 1.98 to 2.02, (2) an organopolysiloxane having a terminal alkoxy group, (3) boric acid or boron oxide, and (4) liquid paraffin. The composition is suited for use in toys and dampers.

Abstract: The present invention provides ethylene-propylene-diene rubbers which are excellent in co-vulcanizability with conjugated diene rubbers and can impart excellent weather resistance, ozone resistance and thermal aging resistance without detriment to excellent mechanical characteristics, wear resistance and dynamic fatigue resistance which the conjugated diene rubbers possess.The ethylene-propylene-diene rubbers of the present invention are characterized by having a Mooney viscosity ML.sub.1+4 (100.degree. C.) of 50 to 120 and comprising(A) 90 to 40% by weight of a high-molecular weight ethylene-propylene-diene copolymer rubber having an ethylene content of 73 to 85 mol %, an intrinsic viscosity [.eta.] of 2.5 to 5.0 dl/g as measured at 135.degree. C. in decalin and an iodine value of 15 to 35, and(B) 10 to 60% by weight of a low-molecular-weight ethylene-propylene-diene copolymer rubber having an ethylene content of 73 to 85 mol %, an intrinsic viscosity [.eta.] of 0.15 to 0.8 dl/g as measured at 135.degree. C.

Abstract: A thermoplastic molding composition was composed ofA: 20-90% by weight of a thermoplastic polyurethane,B: 1-40% by weight of an elastomeric graft copolymer formed fromb.sub.1 : 50-90% by weight of a grafting base comprising an elastomeric polymer which has a glass transition temperature of below -20.degree. C. and is based on butadiene or a C.sub.2 -C.sub.10 -acrylate and, if desired, a crosslinking agent andb.sub.2 : 10-50% by weight of a graft superstratum formed from styrene and acrylonitrile in the ratio of from 85:15 to 60:40 or styrene or methyl methacrylate, andC: 5-75% by weight of a copolymer formed fromc.sub.1 : 55-90% by weight of .alpha.-methylstyrene andc.sub.2 : 10-45% by weight of acrylonitrile or methacrylonitrile or a mixture thereof, andD: up to 50% by weight of a reinforcing filler.

Abstract: A method of performing a nonsurgical blepheroplasty is provided which involves adhering opposing eyelid surfaces together to arrest ptosis or eyelid droop. Specific adhesive compositions are provided to permit oxygen permeability, long-lasting adherence and to be non-toxic with respect to the tissues involved. The adhesive is a mixture including an adhesive component, a thermoplastic elastomer component and a solvent component, with a midblock tackifier being an optional ingredient. The method and composition of the invention are primarily of utility to physicians and direct users seeking to bond human tissues together without the necessity of resorting to surgical techniques and is especially adapted to eyelid blepheroplasty procedures.

Abstract: The invention relates to improved flame retardant crosslinkable compositions useful as insulation coatings for wire and cable based on ethylene-vinyl ester and ethylene-alkyl acrylate copolymers. The compositions contain a hydrated inorganic filler, an alkoxysilane, an antioxidant and a hydrocarbon processing oil. Organic peroxides are preferably employed to facilitate crosslinking. A method for providing the improved flame retardant crosslinkable compositions and electrical conductors coated therewith are also provided.

Abstract: A sealant composition especially useful for porous materials such as wood, concrete and mansonry is provided comprising: (a) a silanol-terminated polysiloxane having a molecular weight greater than about 2000; (b) a multifunctional silane having functional groups which condense with silanol groups in the presence of atmospheric moisture at room temperature to form a cross-linked polymer; and (c) a nonaqueous volatile solvent which is non-reactive with components (a) and (b).The sealant composition renders said materials waterproof by coating and filling in the pores of said material with cured silicone rubber product.In a preferred embodiment the composition also contains a metal-containing curing catalyst and a volatile or subliming chelating agent in an amount sufficient to prevent cure of the composition in the storage container prior to or during use.The composition may also comprise adhesion agents, surfactants and pigments.

Abstract: The method of compounding a high strength, cost-effective, composite of a high temperature, water sensitive, polar, polyamide-inide resin mixed with a talc, water absorbent/adsorbent filler. The method comprises raising said mixture to a temperature of about; 500.degree. F. to develop plasticity in said engineering resin. Thereafter there is added a lower temperature softening, water repellant, polypropylene resin and a compatibilizing additive. Finally all components are mixed in a mixing chamber sufficiently to obtain complete dispersion and homogeneity of the composite.

Abstract: In ink-jet pens (10) for use with printers and plotters, an elastomeric, back-pressure bladder (12) is employed to ensure a supply of ink (14) to the printhead (16) under substantially constant pressure. Contamination of ink due to solubilization of components in the bladder by the aqueous-based ink is avoided by employing an elastomer composition essentially of a high cross-link density ethylene propylene diene monomer, carbon black as reinforcement, dicumyl peroxide on Kaolin clay as curative, and fully hydrogenated clay filtered mineral oil as plasticizer. Such elastomers are given by the composition range (in parts per hundred):______________________________________ EPDM resin 100 Carbon black 18 to 30 Curative 7.0 to 7.5 Plasticizer 20 to 25.

Abstract: An elastomeric composition is formed of at least two, and preferably three, S-EB-S elastomeric triblock copolymers having different solution viscosity/copolymer concentration relationships, and a sufficient amount of a mineral oil plasticizer to achieve excellent tactility with acceptable strength. To prepare articles such as medical film protective devices, the elastomeric composition is dissolved in a sufficient amount of a solvent to permit dip forming. A form having the shape of the desired product is dipped into the solution to build up a film of the elastomeric composition on the form. The dip-formed elastomeric films are free of pinholes and resistant to oxidative and ozone attack. The films are particularly suitable for use in products such as examination, surgical, and industrial gloves and condoms.

Abstract: A new stable liquid suspension of water soluble polymer, and a method of preparation are provided. Such compositions comprise of at least an iso-parrafinic oil medium, one styrene/isoprene copolymer, a water soluble polymer and preferably some hydrophobic fumed silica mixed together in the appropriate quantities and conditions.

Abstract: In accordance with the invention there is a composition comprising a ABS or ABS type resin in admixture with a mold release effective amount of a fluid hydrogenated oligomer of an alpha-olefin.

Abstract: Synthetic polyethylene wax having low molecular weight of 250 to 3000 and a density of 0.930 to 0.950 is prepared in a high pressure process at pressures of at least 800 bar using a carbonyl compound such as acetaldehyde as chain transfer agent. The resulting wax with incorporated CO has good compatibility in hot melt systems, and may be stripped to remove light ends, increase density and crystallinity and improve thermal stability.

Abstract: An elastic crosslinked metathesis polymer composition is disclosed comprised of a copolymer of a norbornene-type compound which metathesis polymerizes to a linear polymer and a norbornene-type compound having a second double bond of similar reactivity which forms a crosslinked polymer, and a hydrocarbon-based extending oil. Norbornene and dicyclopentadiene are typical comonomers. Polymerization is carried out by a RIM or resin injection molding process.

Abstract: This invention provides cured silicone rubber or gel particles exhibiting an average size of from 0.1 to 20,000 micrometers and containing from 0.5 to 70 weight percent, based on the weight of the particle, of entrapped mineral oil. When the particles are incorporated into a liquid or solid matrix material the oil is released from the particles into the matrix at a controlled rate and serves as a lubricating agent.

Abstract: An oily paste composition comprising, as essential components, (I) a polymerization product obtained by addition polymerization of (A) an organohydrogenpolysiloxane containing in its molecule not less than 1.5 silicon-bonded hydrogen atoms on average and (B) an organopolysiloxane containing in its molecule not less than 1.5 silicon-bonded aliphatic unsaturated groups on average, and (II) a saturated hydrocarbon oil.The present composition is smooth to touch, free from stickiness, and excellent in transparency. It is useful for, for example, cosmetic or medical purpose.

Abstract: A composition comprising a blend of no more than about 10% by weight of a low molecular weight, isotactic poly-1-butene polymer with a melt index in the range of greater than 100 to about 1000, and at least about 90% by weight of a propylene polymer, including articles and fibers prepared therefrom.

Abstract: A method for controlling the viscosity of organic liquids, said organic liquid having a solubility parameter of less than 9.5, a viscosity, as measured at 25.degree. C., of less than 200 centipoises and said organic liquid is selected from the group consisting of mineral oils, synthetic oils, naphthanes, alkanes, cycloalkanes and aromatics and mixtures thereof, which comprises incorporating in said organic liquid about 0.01 to 20 grams of polymer complex per 100 ml. of said organic liquid, said polymer complex being formed "in situ" in said organic liquid or dissolved in said organic liquid, said complex being comprised of polymer A, containing about 4 meq. to 500 meq. of neutralized sulfonate groups, and polymer B, containing basic nitrogen groups, both functional groups being present at a level of from about 4 to 500 meq. per 100 g. of polymer, wherein polymer B has the formula: ##STR1## wherein x is about 50.0 to 99.8 weight percent and y is about 0.2 to about 50.

Abstract: A composition for the surface treatment of rubber is disclosed which comprises (A) a diorganopolysiloxane capped with a triorganosiloxy group at one end and a hydroxyl or alkoxy group at the other end; (B) at least one compound selected from organotrialkoxysilanes, organotriacyloxysilanes, organotrioximesilanes or tetraalkyl silicates; and (C) a condensation-reaction catalyst. The composition imparts durable release and lubrication properties to rubber bladders used in the manufacture of tires.

Abstract: Thermoplastic molding composition comprising an organic polyester or poly(phenylene oxide) or poly(phenylene sulfide) or poly(etherimide) polysulfone and a hydrogenated oligomer of an alpha-olefin in an amount effective to impart reliable and facile mold release.

Abstract: Thermoplastic molding composition comprising an organic polyester or poly(phenylene oxide) or poly(phenylene sulfide) or poly(etherimide) polysulfone and a hydrogenated oligomer of an alpha-olefin in an amount effective to impart reliable and facile mold release.

Abstract: Thermoplastic molding composition comprising an organic polyester or poly(phenylene oxide) of poly-(phenylene sulfide) or poly(etherimide) polysulfone and a hydrogenated oligomer of an alpha-olefin in an amount effective to impart reliable and facile mold release.

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 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: Compatible polymer blends useful as melt adhesives comprising a copolymer of butene-1 and from about 5.5 to about 20 weight percent of ethylene or propylene, a hydrocarbon tackifier and a low molecular weight liquid polybutene having a molecular weight greater than about 2000.

Abstract: A thermoplastic pelletizable polymer composition comprising an oligomer or degraded polyolefin and an olefinic elastomer. Optionally, the composition can also include a polyolefin thermoplastic polymer. The composition, when converted to a film or fabric meets the criteria or drapability, low hardness on the Shore A scale, high melt flow and reprocessability.

Abstract: Thermoplastic molding composition comprising an organic polyester or poly(phenylene oxide) or poly(phenylene sulfide) or poly(etherimide) polysulfone and a hydrogenated oligomer of an alpha-olefin in an amount effective to impart reliable and facile mold release.

Abstract: Resilient, crosslinked silicon elastomers shaped as elastoforming dies or form blocks for the stamping of sheet material workpieces, e.g., ultra-thin sheet metal, and well adopted for applications in the automotive industry, comprise a crosslinked fluid organopolysiloxane including at least one silicon-compatible organic or inorganic plasticizer within the crosslinked network thereof, said at least one plasticizer being stable and nonmigrating under elastoforming stamping conditions, and said at least one plasticizer being present in such amount that said plasticized silicone elastomer has a Shore 00 hardness of less than about 40.

Abstract: Polyphenylene ether compositions comprising a polyphenylene ether, an alkenylaromatic polymer, a rubber substance, a polyethylene or ethylenic copolymer, and a mineral oil. These polyphenylene compositions are excellent in the balance among fluidity, impact resistance and gloss.

Abstract: A polymer composition comprising:(A) 15 to 40% by weight of a hydrogenated product of a block copolymer comprising a vinyl aromatic compound (a.sub.1) and a conjugated diene compound (a.sub.2),(B) 4 to 30% by weight of an isopropenyltoluene polymer comprising meta-iso-propenyltoluene as the main constituting unit, and(C) 40 to 80% by weight of a compound selected from the group consisting of .alpha.-olefin polymers (c.sub.1) having a number average molecular weight ranging from 250 to 5000 and squalane (c.sub.2), wherein the total amount of the components (A), (B) and (C) is 100% by weight.