Abstract: This invention relates to a rubber composition comprised of a combination of cis 1,4-polybutadiene and at least one liquid hydroxyl terminated polyalkylene polymer together with a halogenated copolymer of isobutylene and p-methylstyrene and a minor amount of at least one conjugated diene-based elastomer, preferably cis 1,4-polyisoprene. The rubber composition contains particulate reinforcement as carbon black or as carbon black and silica together with a coupling agent. The invention also relates to a tire having a sidewall of such rubber composition.

Abstract: In the preparation of thermoplastic elastomers by hydrosilylation crosslinking of the elastomeric component, the use of an elastomer containing a non-conjugated diene and having a Mooney viscosity within the MST range of 45 to 100 provides products with a high level of crosslinking and an improved combination of physical properties. This improvement is obtained even at low concentrations of hydrosilylation catalyst.

Abstract: Random propylene thermoplastic copolymers can be used to increase the elongation to break and toughness of thermoplastic vulcanizates. Semi-crystalline polypropylene is a preferred thermoplastic phase. The rubber can be olefinic rubbers. Random thermoplastic polypropylene copolymers are different from conventional Ziegler-Natta propylene copolymers as the compositional heterogeneity of the copolymer is greater with Ziegler-Natta copolymers. This difference results in substantial differences in properties (elongation to break and toughness) between thermoplastic vulcanizates modified with random thermoplastic propylene copolymers and those modified with conventional Ziegler-Natta propylene copolymers. An increase in elongation to break results in greater extensibility in the articles made from a thermoplastic vulcanizate.

Abstract: A hydrophilic coating composition for hydrophilically coating a metallic surface. The coating composition comprises a fluorocarbon-containing hydrophilic polymer comprising units of hydrophilic monomer and fluorocarbon-containing hydrophobic comonomer. The coating composition produces hydrophilic coatings on the metallic surface having a contact angle below about 50°.

Abstract: A method for producing a thermoplastic elastomer material in the form of a mixture of one or more thermoplastics and one or more crosslinked rubbers. Said mixture contains the following constituents: one or more thermoplastics for 10-90%, one or several non-crosslinked rubbers, a crosslinking activator, a crosslinking agent, possibly other additives.

Abstract: This invention relates to polyolefin polymer dispersions having a semicrystalline plastic (SP) component and an amorphous elastomer (AE) component. The polymer dispersions of this invention are characterized by a continuous phase containing a discontinuous phase (dispersed phase) as seen by FIG. 2. Embodiments of this invention include either: 1) a discontinuous phase composed of the SP component dispersed within a continuous phase composed of the amorphous elastomer component and/or, 2) a discontinuous phase composed of the amorphous elastomer dispersed within a continuous phase composed of the SP component.

Abstract: A rubber composition containing 20 parts by weight-200 parts by weight of hydrogenated styrene thermoplastic elastomer and poly-olefin for 100 parts by weight of rubber which is dynamically vulcanized with a resin vulcanizing agent to disperse the rubber in a mixture of the hydrogenated styrene thermoplastic elastomer and the poly-olefin.

Abstract: A thermoplastic vulcanizate composition containing a thermoplastic and a functionalized copolymer of para-alkylstyrene-isoolefin is free radically cured, as for example, with a peroxide to yield a product having low impurities and good clarity. The thermoplastic typically can be a polyolefin.

Abstract: The invention provides a diene polymer composition composed of a branched diene polymer component (A) having at least three branched diene polymer chains through a polyfunctional coupling agent and a linear diene polymer component (B) having a quaternary ammonium group, and having a weight average molecular weight (Mw) within a range of from 100,000 to 2,000,000, a preparation process of the diene polymer composition, and a rubber composition comprising a rubber component containing the diene polymer composition, and a reinforcing agent.

Abstract: There is provided olefin-based cross-linked thermoplastic elastomers and a preparation method thereof. The TPE comprises a thermoplastic polyolefin resin; an ethylene-propylene-dien rubber; an ethylene-octene copolymer; and a phenolic cross-linking agent. The TPE shows good tensile strength, tension set and compression set.

Abstract: Disclosed is an olefin thermoplastic elastomer composition obtained by dynamically heat treating, in the presence of an organic peroxide, a blend comprising 10 to 60 parts by weight of a crystalline polyolefin resin (A) and 40 to 90 parts by weight of an unsaturated olefin copolymer (B) of at least one .alpha.-olefin of 2 to 20 carbon atoms, a conjugated diene monomer represented by the following formula (I), and optionally, an aromatic vinyl compound, the total amount of said components (A) and (B) being 100 parts by weight; ##STR1## wherein R.sup.1 and R.sup.2 are each independently a hydrogen atom, an alkyl group of 1 to 8 carbon atoms or an aryl group, and at least one of R.sup.1 and R.sup.2 is a hydrogen atom. The composition has excellent moldability and can provide a molded product having excellent elastomeric properties, tensile strength properties and appearance.

Abstract: A composition comprising:(a) polyethylene;(b) a cure booster selected from the group consisting of 3,9-divinyl-2,4,8,10-tetra-oxaspiro[5.5]undecane (DVS); a copolymer of ethylene and DVS; and an ethylene homopolymer or copolymer having DVS grafted thereto; and(c) an organic peroxide.

Abstract: Thermoplastic vulcanizate blends are prepared from a semi-crystalline polymer and a rubbery copolymer derived from copolymerizing at least one alpha-olefin monomer and at least one cyclic olefin copolymer. The rubbery copolymer also includes repeat units from at least one polyene monomer. The polyene monomer provides residual unsaturation for crosslinking of said rubbery copolymer. Crosslinking the rubbery copolymer of the blend generally reduces tension set, compression set and oil swell in aliphatic solvents. The cyclic olefin monomer reduces oil swell in aliphatic oils.

Abstract: A covering material composition for a golf ball, which comprises an ionomer resin and a diene rubber, the diene rubber being dispersed in the ionomer resin. The covering material composition is produced by mixing the ionomer resin with the diene rubber to disperse the diene rubber in the ionomer resin.

Abstract: A cyclic amine containing polymer substantially free of primary and secondary amino groups which is prepared by reacting:a) an amine selected from the group consisting of:i) cyclic amines having at least one nitrogen atom in the ring and at least one primary amino alkyl group bonded to the nitrogen atom of the ring, andii) mixtures of cyclic amines containing at least two nitrogen atoms which react with a cross-linking agent with at least one other amine containing 1-6 nitrogen atoms which react with a cross-linking agent, withb) at least one cross-linker selected from the group consisting of at least one compound containing two groups which react with the primary amino group and said nitrogen atoms and mixtures of at least one compound containing two groups which react with the primary amino group and said nitrogen atoms with at least one compound containing at least three groups which react with the primary amino group and said nitrogen atoms in a molar ratio of (a):(b) of from 2.5:1 to 1:1.

Abstract: The present invention relates to polyolefin compositions comprising: (a) 20 to 50 parts by weight of a particular propylene polymer having an MWD greater than 3.5; and (b) 50 to 80 parts by weight of an elastomeric ethylene copoymerR having a low enthalpy of fusion and a narrow MWD.

Abstract: Disclosed is a thermoplastic elastomer composition having characteristics of both thermoplastic resin and rubber, and a golf ball using the thermoplastic elastomer composition as the cover. The thermoplastic elastomer composition of the present invention comprises a thermoplastic resin and crosslinked diene rubber particles having an average diameter of not more than 10 .mu.m dispersed in the thermoplastic resin, which is prepared by dynamic crosslinking diene rubber dispersed in the thermoplastic resin with crosslinking agent.

Abstract: Compositions and techniques useful to effectively recycle crosslinked (i.e., vulcanized or cured) fluoroelastomers are disclosed. The invention utilizes an additive system that includes a cure-enhancing additive, a crosslinking agent, and an accelerator.

Abstract: An improved process for the preparation of thermoplastic vulcanizates from butyl rubbers by hydrosilylation crosslinking of acrylic or alkacrylic functionalized copolymers of isobutylene and paramethylstyrene is disclosed. The functionalization results in lower compression and tension set than when using conventional butyl rubbers. Other physical properties of the thermoplastic vulcanizate are improved consistent with more efficient crosslinking of the functionalized copolymer.

Abstract: A walkway pad composition comprises 100 parts by weight of an ethylene-propylene-diene terpolymer; from about 60 to 700 parts by weight of a filler selected from the group consisting of reinforcing and non-reinforcing materials and mixtures thereof, per 100 parts of the terpolymer; from about 40 to 175 parts by weight of a processing material and mixtures thereof, per 100 parts of the terpolymer; and from about 2 to 10 parts by weight of a cure package, per 100 parts of the EPDM terpolymer, the composition being devoid of any additional polymeric components. The 100 percent EPDM walkway pad composition has better low temperature properties and superior weathering resistance, and heat aging resistance compared to other walkway pad compositions which may include other polymeric components such as natural rubber, synthetic polyisoprene, styrene-butadiene rubber (SBR), polybutadiene, and butyl (IR) rubber. Up to about 25 parts by weight of ethylene-propylene copolymers may be substituted for the EPDM terpolymers.

Abstract: Disclosed is a process for the making a polyvinylchloride/acrylonitrile-butadiene rubber blend by a) coating a polyvinylchloride resin with a stabilizer to form a precoated PVC; b) blending said precoated PVC with one or more acrylonitrile-butadiene rubbers to form a prestabilized NBR/PVC blend; and c) applying heat and pressure to intimately blend said prestabilized NBR/PVC blend into a fluxed NBR/PVC blend. Another aspect is a novel polyvinylchloride/acrylonitrile-butadiene rubber blend having a stabilizer homogeneously and uniformly distributed throughout the microscopic polyvinylchloride domains.

Abstract: The present invention provides a rubber composition in which the coexistence of low heat build-up, heat resistance and high hardness can be achieved without damaging failure characteristics. According to the present invention, a rubber composition comprising a 100 parts by weight of matrix rubber and a 2-75 parts by weight of a polyethylene composition which contains 0-80% by weight of polyethylene and 20% by weight or more of a composite comprising a polyethylene component and a rubber component previously bonded via a coupling agent to the polyethylene component, said rubber component is crosslinked with the matrix rubber. At least at one of the kneading stages before the final stage, the compound is kneaded so that the maximum temperature of the compound of the kneading of that stage is higher than the melting point of the polyethylene component mixed, preferably, by 10.degree. C. or more.

Abstract: The present invention relates to a pneumatic rubber tire having an integral innerliner of a sulfur cured rubber compound. The rubber compound is characterized by, based on 100 parts of ruber, (A) from about 70 to 98 parts by weight of bromobutyl rubber, (B) from 2 to 30 parts by weight of a trans 1,4-polybutadiene rubber having at least a 65 percent trans 1,4-content; and (C) from 0 to 28 parts by weight of a rubber selected from the group consisting of an acrylonitrile/butadiene copolymer, styrene/butadiene copolymer, natural rubber and mixtures thereof.

Abstract: An anti-static resinous composition with permanent anti-static property is provided. The anti-static resinous composition comprises from 5 to 50 percent by weight of hydrophilic copolymer and from 50 to 95 percent by weight of thermoplastic. The hydrophilic copolymer is formed by self-emulsion polymerization. The monomer mixture used in the reaction comprises from 10 to 70 percent by weight of vinyl or propenyl macromonomer containing a polyethylene oxide chain and from 30 to 90 percent by weight of ordinary vinyl monomer. The thermoplastic is compatible with the hydrophilic copolymer. The resultant resinous composition has permanent anti-static properties.

Abstract: The present invention generally relates to polymeric compositions capable of providing enhanced crosslinking efficiency, to single and multilayer films having the subject composition contained within at least one layer of said film, to a method of treating said film to provide enhanced crosslink within said at least one layer of the film and to the resultant cross-linked film product as well as articles made from said cross-linked film product.

Abstract: This invention relates to a process for preparing a block copolymer composition, wherein it comprises following successive steps:a step in which a vinyl aromatic monomer is polymerized in a reactor in the presence of an inert hydrocarbon solvent and organolithium initiator until depletion of the monomer to generate a living polymer; a step in which a conjugated diene monomer is added to the above polymer to synthesize a living diblock copolymer; a step in which a portion of polymerization terminator is added to partially inactivate the living diblock copolymer; steps in which a conjugated diene monomer and aromatic vinyl monomer are sequentially added to generate a mixture of living triblock copolymer and inactivated diblock copolymer; a step in which a polymerization terminator is added to complete the reaction.

Abstract: Partially crosslinked plastic compositions with a melt flow index at 230.degree. C. and under a load of 2.16 kg, of from 0.1 to 100 g/10 min, and a gel content of less than 12% by weight, is prepared froma) a polymer comprisinga.sub.1) from 60 to 92% by weight of a propylene homopolymer anda.sub.2) from 8 to 40% by weight of a propylene copolymer having C.sub.2 -C.sub.10 -alk-1-enes incorporated into its polymer chain and with a comonomer content, based on a.sub.2) of from 15 to 70% by weight, andb) a compound of the formula (I) ##STR1## where R.sup.1 is hydrogen or C.sub.1 -C.sub.4 -alkyl,X is substituted or unsubstituted C.sub.1 -C.sub.30 -alkyl or substituted or unsubstituted C.sub.7 -C.sub.30 -arylalkyl, where each of the alkyl groups may be interrupted byone or more oxygen atoms in ether moieties (--O--) or oxycarbonyl moieties (--O--CO--) and/or bynitrogen groups of the formula NR.sup.2, where R.sup.2 is hydrogen, C.sub. -C.sub.6 -alkyl or C.sub.1 -C.sub.

Abstract: A resin composition for a water-repellent coating which is excellent in adhesion to a substrate and weathering resistance and has a high hardness equivalent to that of a hard coating and excellent acid resistance, which can exhibit these properties in spite of a low fluorine content, the composition containing a polymer (A) formed from 20 to 80% by weight of a fluorine-containing monomer (a) having a carbon-carbon unsaturated double bond and a perfluoroalkyl group, 20 to 80% by weight of a monomer (b) having a carbon-carbon unsaturated double bond and a crosslinkable functional group and 0 to 30% by weight of a monomer (c) having a carbon-carbon unsaturated double bond other than the monomers (a) and (b), and a polymer (B) formed from 20 to 100% by weight of a monomer (b) having a carbon-carbon unsaturated double bond and a crosslinkable functional group and 0 to 80% by weight of a monomer (c) having a carbon-carbon unsaturated double bond other than the monomer (a) and (b), and a water-repellent coating comp

Abstract: Thermoplastic molding materials containA) from 50 to 99% by weight, based on the total weight of the molding material, of a toughened polymer,B) from 1 to 20% by weight, based on the total weight of the molding material, of a blend ofB.sub.1) a copolymer comprising polymerized units which are derived from a polymerizable carboxylic acid or derivatives thereof andB.sub.2) a polyamide,C) from 0 to 40% by weight of a fibrous or particulate filler or of a mixture thereof andD) from 0 to 20% by weight of conventional additives and processing assistants.

Abstract: A thermoplastic resin composition comprising an aromatic polycarbonate resin and an aromatic polysulfone resin and having the specific melt viscosity ratio between the two resins in the composition. This composition is excellent in heat resistance and gives a molded article of especially high temperature of deflection under load.

Abstract: The present invention provides a dye-fixing agent, obtainable by reacting in a first reaction step, either a homopolymer of diallylamine or N-methyl-diallylamine or a copolymer of diallylamine and N-methyl-diallylamine, with an epihalohydrin, the reaction optionally taking place in the presence of an aliphatic amine or polyamine, or reacting the homopolymer or copolymer with a product obtainable by a reaction of epihalohydrin with an aliphatic amine or polyamine, optionally followed by partial quaternization of the reaction product of the first reaction step, characterized in that the end product possesses at least 10 mol % of tertiary amino groups of the following formula (I), based on the total number of amino groups ##STR1## wherein X=halogen, with the provisos that when the homopolymer is an N-methyl-diallylamine, the presence of an aliphatic amine or a polyamine is obligatory in the reaction with the epihalohydrin and when the homopolymer is a homopolymer of diallylamine, partial quaternisation of the re

Abstract: Water-soluble polymers including functionalization from the group of amino groups, carboxylic acid groups, phosphonic acid groups, phosphonic ester groups, acylpyrazolone groups, hydroxamic acid groups, aza crown ether groups, oxy crown ethers groups, guanidinium groups, amide groups, ester groups, aminodicarboxylic groups, permethylated polyvinylpyridine groups, permethylated amine groups, mercaptosuccinic acid groups, alkyl thiol groups, and N-alkylthiourea groups are disclosed.

Abstract: Polyalkenylaromatic-polyethylene copolymers are prepared using protected functional organolithium initiators. Polymerization of an alkenylsubstituted aromatic monomer followed by ethylene, results in a protected functional block polystyrene-co-polyethylenyllithium. Termination with a functionalizing agent followed by deprotection produces polymeric products with high functionalization at the initiating chain-end and at least partial functionalization at the terminal chain-end.

Abstract: A process for forming a dispersion of polytetrafluoroethylene particles in a liquid containing a dispersant by passing the mixture through a plurality of nozzles within a liquid-jet interaction chamber at a pressure of to deagglomerate and stabilize the polytetrafluoroethylene particles.

Abstract: Crosslinkable mixtures are made of recycled rubber granules, rubber and oil. The crosslinkable mixtures are made of recycled rubber granules mixed with rubber dissolved in oil. The crosslinkable mixtures can be press molded into molded bodies having good mechanical and elastic properties, since a virtually plastic flowing provides for optional bonding of the granule particles among each other during processing.

Abstract: A film suitable for packaging medical solutions and other pH sensitive products wherein the product pH is controlled by including an ionomer resin as a core layer, strength layer, or other distinct intermediate layer positioned between a sealant layer and a vinyl carboxylate copolymer containing layer.

Abstract: The invention relates to a tire with a tread which is quantitatively reinforced with silica where the tread rubber is composed of a backbone of a combination of isoprene/butadiene copolymer rubber, cis 1,4-polyisoprene natural rubber and halogenated copolymer of isobutylene and p-methylstyrene. Such tread rubber may optionally also contain other elastomers such as, for example, cis 1,4-polybutadiene rubber and styrene/butadiene copolymer rubber.

Abstract: Increasing the usable temperature range of asphalts that contain crumb rubber particles by treating the crumb rubber with hydrogen peroxide in the presence of a catalyst such as Fenton's reagent, dioxomolybdenum bis(acetylacetonate), cobalt salt, tall oil, p-toluene sulfonic acid (PTSA), and others.

Abstract: The present invention relates to a rubber composition containing substantial silica reinforcement and pneumatic tires having treads comprised of such rubber composition. The rubber composition comprises an elastomer, substantial silica reinforcement, optionally a minor amount of carbon black reinforcement, and a triblock copolymer of terminal hard styrene based segments and of internal diene based elastomer segments.

Abstract: A polysuccinimide composition is prepared by reacting a mixture of a copolymer of a first unsaturated acidic reagent and a 1,1-disubstituted olefin; a copolymer of a second unsaturated acidic reagent and a 1-olefin, and a polyamine under reactive conditions; then treating the reaction product with either a cyclic carbonate or a linear mono- or polycarbonate or boron compound under reactive conditions. The two unsaturated acidic reagents can be the same or different. The mixture contains from 0.1 to 1.5 equivalents of polyamine per equivalent of acidic groups of the first and second copolymers.

Abstract: A process for the preparation of electroluminecent polymers comprising: polymerizing a first monomer of the formula X-cg-X with a second monomer of the formula Y-USG-Y by coupling in the presence of a metal containing reagent to form a soluble precursor polymer product of the formula -?-cg-USG-!.sub.n - wherein X and Y represent substituents are capable of undergoing coupling polymerization reactions, cg represents a convertible group, USG represents an unsaturated group; and n represents the number of first and second monomers contiguously coupled, and is an integer from 5 to about 10,000; and thermally converting the precursor polymer product to form a converted polymeric product of the formula -?-cg-USG-!.sub.(1-a) -?-CG-USG-!.sub.a - wherein a is the degree of conversion, and CG is a converted group arising from conversion of the convertible group cg.

Abstract: A thermoplastic polymer composition incorporating at least about 50 wt % polypropylene, at least about 20 wt % of an elastomer such as EP rubber and at least about 4 wt % plastomer. The plastomer is preferably a single site catalyzed ethylene based copolymer having a density less than about 0.915. By adjusting the amount of the plastomer in the composition, considerable control is secured over post-mold shrinkage of components produced through injection molding operations utilizing the composition. The composition can be prepared as a reactor blend or a melt blend. The composition is particularly useful in producing large components such as bumpers and exterior trim fascia for automobiles.

Abstract: A polymer material (6) is formed from a first polyethylene component (1) having a low density (VLDPE) which is silane-grafted with an organic silane (3) in combination with organic peroxide (4) and is cross-linked through storage in a damp environment and/or in water. The polymer material (6) can be processed into medical instruments under dry conditions prior to cross-linkage. After cross-linkage the medical instruments made from the polymer material (6) exhibit a high degree of transparency, are non-buckling and flexible. The polymer material (6) is produced in an extruder, preferentially in a double-worm extruder.

Abstract: An immobilized Lewis Acid catalyst system for the carbocationic polymerization of olefin monomer is provided. The catalyst comprises a porous polymer support having catalytically active Lewis Acid residue bonded to the surface of the support including the pore surfaces.

Abstract: Monofunctional or multifunctional isothiocyanates having the general formulaR--(N.dbd.C.dbd.S).sub.xwhere R is any organic remainder; x.gtoreq.1, or compounds which form such isothiocyanates under the influence of temperature are used in elastomeric compounds to be vulcanized as inhibitors for amines.

Abstract: The invention is to provide elastomer-like or rubber-like, recyclable cross-linked polymers capable of being liquefied and re-molded repeatedly without detracting from the physical properties of the polymers. The polymer comprises meltable cross-linked oligomer units and linkage units via which the oligomer units are linked to construct the main chains of the polymer. Each linkage unit in the polymer comprises a chemical bond that can be cleaved and re-formed repeatedly by predetermined treatment by which the bond between monomers in the oligomer units are not cleaved. The method for producing the polymer comprises a step of forming oligomer units by polymerizing monomers, a step of forming linkage units by linking the oligomer units via linkage units and a step of forming cross-linked units between the oligomer units.

Abstract: A low shear modulus vulcanizate for construction of flexible bearings, particularly for rocket motors, consisting essentially of a mixture of two natural or synthetic rubber copolymers, the first having about 92% cis-1,4-polyisoprene and about 8% trans-1,4-polyisoprene moieties and the second having about 98% by weight cis-1,4-polyisoprene and about 2% by weight trans-1,4-polyisoprene moieties. The composition is lightly filled and contains a low proportion of sulfur, so the vulcanizate has the required low shear modulus, low rate of thermal crystallization at low temperatures, and an acceptably high shear strength.

Abstract: Blends of chlorinated polyvinyl chloride and chlorinated polyethylene and methods for preparing extruded profiles such as a window spacer, a glazing bead, a window lineal, and a track for lighting, having smooth surface characteristics are disclosed. The blends comprise 100 weight parts CPVC containing from 62% to 72% chlorine, preferably 65% to 71% chlorine and from 10 to 30 weight parts, preferably 15 to 25 parts of chlorinated polyethylene containing from 25 to 45% chlorine and extruding the blend. The preferred embodiments of the invention are further defined by a particular combination for the chlorine content of CPVC, the real weight average molecular weight of CPE (M.sub.w) and polydispersity (M.sub.w /M.sub.n), defined as the ratio of the weight average to number average molecular weight, and extrusion shear rate.

Abstract: This invention relates to waterborne copolymeric colorant compositions having a dye covalently bonded in the polymer backbone which is prepared by emulsion polymerization of an alkaline solution of a reactive dye and a vinyl monomer. The waterborne copolymeric colorant compositions are useful in formulating waterborne coatings, paints, inks, and primers in various household, personal care and cosmetic applications.

Abstract: A pneumatic rubber tire having a rubber sidewall composition containing trans 1,4-polybutadiene rubber and at least one additional rubber.