Abstract: A method for preparing a functionalized polymer, the method comprising the steps of (i) polymerizing monomer with a coordination catalyst to form a reactive polymer; and (ii) reacting the reactive polymer with a nitrile compound containing a protected amino group.

Abstract: A sulfur-containing cycloaliphatic compound, useful as a crosslinker for filled sulfur-vulcanizable elastomer compositions, is represented by the general formula: G[—CaH2a—S—S(?O)b—R]n wherein G is a saturated, monocyclic aliphatic group of valence n containing from 5 to 12 carbon atoms and optionally containing at least one halogen or a saturated monocyclic silicone [RSiO—]n[R2SiO—]p group of valence n; each R independently is a monovalent hydrocarbon of up to 20 carbon atoms; each occurrence of subscripts a and b independently is an integer wherein a is 2 to 6 and b is 1 or 2; n is an integer of from 3 to 6; and p is an integer of from 0 to 3.

Abstract: A method for producing a rubber composition, the method comprising a step of producing a pre-kneaded rubber composition by kneading a butadiene-based rubber and 1 to 20 parts by weight of a silane coupling agent per 100 parts by weight of the butadiene-based rubber and a step of kneading the pre-kneaded rubber composition and 30 to 200 parts by weight of a silica per 100 parts by weight of the butadiene-based rubber used for producing the pre-kneaded rubber composition.

Abstract: An object of the present invention is to provide an olefin-based thermoplastic elastomer composition that has both weatherability and flexibility at low temperatures, is excellent in fluidity, and causes no stickiness even in the use at high temperatures; a process oil composition for elastomers that serves as the raw material of the thermoplastic elastomer composition and contributes to the above characteristics; and an oil-extended elastomer containing the process oil composition. The process oil composition for elastomers of the present invention has a property that, when 20 parts by weight of the process oil composition for elastomers are blended with respect to 100 parts by weight of a propylene homopolymer, the melting point of the propylene homopolymer is lowered by 2 to 4.5° C. compared to that of the propylene homopolymer without blending.

Abstract: There is provided a method of producing a conjugated diene rubber capable of being used as a starting material for a crosslinked rubber that can be used in applications such as tire treads and can raise the fuel efficiency.

Abstract: A one-package moisture curable composition is provided. The composition comprises, by weight percentage based on the dry weight of the composition, from 50 to 95% at least one silane terminated polybutadiene based polymer or silane terminated polyol based polymer and from 5 to 50% at least one fluoro/fluoroalkoxy-functionalized silane; wherein the composition, after moisture cured, forms a surface whose water contact angle is larger than 101°. The composition is suitable for the applications in antifouling coatings which affords low surface energy and improved mechanical performance.

Abstract: Curable rubber compositions and cured articles are based on the use of zinc activator compositions for the sulfur cure. Activator compositions contain zinc and a polymeric component having a plurality of COOH groups, at least some of which are neutralized with the zinc. With polymeric zinc activators, sulfur cure can be activated at levels of zinc below those used in conventional systems.

Abstract: The present invention has an object to provide a conjugated diene-based polymer, subjected to a vulcanization treatment to make a vulcanized rubber, the vulcanized rubber useful as a material for tire treads excellent in the balance among wet skid characteristics, low hysteresis loss, abrasion resistance, breaking strength and rigidity, and to provide its manufacturing process.

Abstract: Farnesene interpolymer comprises units derived from a farnesene (e.g., ?-farnesene or ?-farnesene) and units derived from at least one vinyl monomer. The farnesene interpolymer can be prepared by copolymerizing the farnesene and at least one vinyl monomer in the presence of a catalyst. In some embodiments, the farnesene is prepared from a sugar by using a microorganism. In other embodiments, the at least one vinyl monomer is ethylene, an ?-olefin, or a substituted or unsubstituted vinyl halide, vinyl ether, acrylonitrile, acrylic ester, methacrylic ester, acrylamide or methacrylamide, or a combination thereof.

Abstract: Provided are a modifying agent obtained by subjecting a silicon-containing compound having a protected primary amino group and at least two hydrolyzable groups to complete condensation, a method of producing a modified conjugated diene-based polymer, a modified conjugated diene-based polymer obtained by the production method, a rubber composition using the polymer, and a pneumatic tire. The modified conjugated diene-based polymer has excellent low heat generating property and abrasion resistance, and the rubber composition is obtained by using the modified conjugated diene-based polymer and the pneumatic tire is obtained by using the rubber composition.

Abstract: Provided is a thermosetting resin composition which can be used for the production of printed circuit boards, having good dielectric properties in high frequency bands so that transmission loss can be significantly lowered, having excellent heat resistance after moisture absorption and thermal expansion properties, and satisfying peeling strength between the resin composition and metal foil. The present invention relates to a thermosetting resin composition of a semi-IPN composite, comprising (A) a polyphenylene ether, and a prepolymer formed from (B) a chemically unmodified butadiene polymer containing 40% or more of a 1,2-butadiene unit having a 1,2-vinyl group in a side chain of a molecule and (C) a crosslinking agent, in a compatibilized and uncured state; and a resin varnish, a prepreg and a metal clad laminated board using the same.

Abstract: The invention pertains to a particle comprising a composition containing a matrix and a peroxide or azo radical initiator, wherein the particle is a fiber or fibrid selected from aramid, polyester, polyamide, cellulose, and glass. The invention further relates to particle-elastomers comprising said composition, and skim products, tires, tire treads, and belts comprising these particle-elastomers.

Abstract: A macromolecule including a polymer and a polyhedral radical chemically bonded to a terminus of the polymer provides numerous processing and performance advantages. Further functionalization of this macromolecule also is described as being advantageous in certain circumstances. Methods of providing, functionalizing, and utilizing the macromolecule also are provided.

Abstract: The present invention provides a modified natural rubber which simultaneously achieves good fuel economy and good heat-aging resistance, and the production method thereof. The present invention also provides a tire rubber composition and a pneumatic tire which are produced using the modified natural rubber. The present invention relates to a modified natural rubber which is obtainable by treating a rubber coagulated from a saponified natural rubber latex, with a basic compound and then with an acidic compound.

Abstract: A functionalized polymer defined by the formula ?-R1-?, where ? is a polymer chain, R1 is a bond or a divalent organic group, and ? is a sulfur-containing heterocycle.

Abstract: Nucleophilic substitution reactions of halogenated polymers and azoles are used to produce derivatives of polyolefins bear pendant azolium ionomers. These uncured ionomers are useful in adhesive, antimicrobial applications, as well as in polymer composites and polymer blends. Furthermore, these azolium ionomers' ion pairs can bear reactive functionality, which provides access to further reactions that were unavailable using previous technology. Advantageously, such reactive ionomer derivatives of polyolefins can be cured by free radical and moisture-curing chemistry that was unaccessible to the halogenated polymer parent material.

Abstract: The present invention provides a modified polymer, which is obtained by reacting, with an active metal bonded to a polymer, a modifier represented by the general formula (I) (where X1 to X5 each represent a hydrogen atom or a specific monovalent functional group, and at least one of those is other than a hydrogen atom, R1 to R5 each represent a single bond or a divalent hydrocarbon group having 1 to 18 carbon atoms, and a plurality of aziridine rings may be bonded through any of X1 to X5 and R1 to R5).

Abstract: A process for producing a thermoplastic resin molded product, comprising: a placement step of placing a thermoplastic resin particle composition 6A into a cavity 22 of a rubber die 2 made of a rubber material; a particle heating step of irradiating the thermoplastic resin particle composition 6A in the cavity 22 with electromagnetic waves having wavelengths ranging from 0.78 to 2 ?m through the rubber die 2, thereby heating to melt the thermoplastic resin particle composition 6A; a filling step of filling a thermoplastic resin 6 in a molten state into a space 220 left in the cavity 22; and a cooling step of cooling a thermoplastic resin 6 in the cavity 22 thereby obtaining a thermoplastic resin molded product.

Abstract: A method for preparing a functionalized polymer, the method comprising the steps of polymerizing monomer to form a reactive polymer; and reacting the reactive polymer with a protected oxime compound containing an acyl group.

Abstract: A functionalized polymer includes the reaction product of a reactive polymer and a compound that includes an aryl group having at least one directly bonded OGp substituent, where Gp is a protecting group, and a substituent (Q) which is free of active hydrogen atoms and which is, or connects to the aryl group through, a moiety that includes a carbon-to-nitrogen multiple bond. The polymer can be provided from a solution that includes one or more types of ethylenically unsaturated monomers which include at least one type of polyene, particularly one or more conjugated dienes in certain embodiments. An active terminus of the resulting reactive polymer can react with the Q substituent of the compound so as to provide a polymer having as a terminal functionality the radical of a compound that includes an aryl group having at least one directly bonded OGp substituent.

Abstract: The present invention provides: a rubber composition for a tire having favorable productivity, excellent heat aging resistance and abrasion resistance, and excellent fuel economy; and a pneumatic tire using the rubber composition. The rubber composition contains neither soluble sulfur nor insoluble sulfur, and contains diene rubber, 1-15 parts by mass of compound 1 represented by formula (1) and 0.1-5 parts by mass of compound 2 represented by formula (2), per 100 parts by mass of the diene rubber, and the amount ratio of compound 1 to compound 2 (compound 1/compound 2) is 1-8. wherein R1-R4 are the same or different, and represent C1-20 alkyl, C6-20 aryl, or C7-20 aralkyl, and n represents an integer of 1-12; wherein R5-R7 are the same or different, and represent C5-12 alkyl, x and y are the same or different, and represent an integer of 2-4, and m represents an integer of 0-10.

Abstract: The present invention relates to rubber mixtures with functionalized diene rubbers and with microgels, to a production process, and to the use of the mixtures for the production of low-abrasion motor-vehicle tires which have wet-slip resistance and which have low rolling resistance.

Abstract: A method for preparing a functionalized polymer, the method comprising providing a reactive polymer, where the reactive polymer includes a carbon anion, an oxygen anion, a sulfur anion, or a nitrogen anion, reacting the reactive polymer with carbon disulfide to form a polymer including a dithio carboxyl group, and reacting the polymer including the dithio carboxyl group with a blocking agent.

Abstract: A method of compounding a modified, epoxidized natural rubber for use as a tire tread which includes the steps of modifying an epoxidized natural rubber containing a ring-opened epoxy group, compounding the modified, epoxidized natural rubber with another rubber, to form a rubber compound, together with silica and/or carbon black to form a rubber composition, and forming the rubber composition into a tire tread.

Abstract: By a rubber composition for a side wall, including a rubber component containing a natural rubber component consisting of a natural rubber and a modified natural rubber, 20 to 60 parts by mass of silica, and 0.5 to 15 parts by mass of at least any one of a terpene-based resin and a rosin-based resin based on 100 parts by mass of the rubber component, and a pneumatic tire provided with a side wall rubber using the same, a rubber composition for a side wall in which both of maintenance of properties desired in a rubber composition for a side wall such as durability and improvement in processibility can be realized while a use amount of a raw material derived from a petroleum source is reduced, and a pneumatic tire in which running safety is improved by providing with a side wall rubber using the same, are provided.

Abstract: The present invention is directed to a method of making a rubber composition, comprising the steps of A) obtaining a diene-based elastomer selected from the group consisting of natural rubber, synthetic polyisoprene, polybutadiene, solution polymerized styrene-butadiene rubber (SSBR), and emulsion polymerized styrene-butadiene rubber (ESBR); B) mixing the diene-based elastomer with a halogenating agent to form an intermediate elastomer; and C) mixing the intermediate elastomer with a carbon black. There is further disclosed a rubber composition made by the foregoing method, and a pneumatic tire comprising the rubber composition.

Abstract: A method for preparing a functionalized polymer, the method comprising the steps of (i) polymerizing monomer with a coordination catalyst to form a reactive polymer; and (ii) reacting the reactive polymer with a nitrile compound containing a protected amino group.

Abstract: A sulfur-containing cycloaliphatic compound, useful as a crosslinker for filled sulfur-vulcanizable elastomer compositions, is represented by the general formula: G[-CaH2a—S[C(?O)]bR]n wherein G is selected from the group consisting of: saturated, monocyclic aliphatic group of valence n containing from 5 to 12 carbon atoms and optionally containing at least one halogen, and saturated monocyclic silicone [RsiO—]n[R2SiO—]p group of valence n; wherein each R independently is a hydrogen or monovalent hydrocarbon of up to 20 carbon atoms; each occurrence of subscripts a and b independently is an integer wherein a is 2 to 6 and b is 0 or 1; p is an integer of from 0 to 3; and, n is an integer of from 3 to 6, with the provisos that when b is 0, R is a hydrogen atom, and when G is a non-halogenated, saturated monocyclic aliphatic group of 6 carbon atoms, n cannot be 3.

Abstract: The present invention provides a tread rubber composition for a studless tire having favorable performance on ice and snow and excellent abrasion resistance while reducing strain dependence of hardness of the tread rubber and maintaining rigidity on roads that are not covered with snow and relates to a tread rubber composition for a studless tire, which comprises a diene rubber containing, in a total amount of 80% by mass or more, natural rubber and polybutadiene rubber; silica in an amount of 10 to 150 parts by mass per 100 parts by mass of the diene rubber; and carbon black in an amount of 3 to 50 parts by mass per 100 parts by mass of the diene rubber, wherein the diene rubber contains 10% by mass or more of a polybutadiene rubber modified by a compound represented by the formula (I): R1, R2 and R3 being independently an alkyl group, analkoxy group, a silyloxy group, an acetal group, a carboxyl group, a mercapto group, or a derivative thereof; R4 and R5 being independently a hydrogen atom or an alkyl g

Abstract: Disclosed are a modified conjugated diene-based polymer capable of providing a polymer composition improved in tan ? balance, a polymer composition containing the modified conjugated diene-based polymer and silica, and a process for producing the modified conjugated diene-based polymer. The modified conjugated diene-based polymer is obtained by melt-kneading a conjugated diene-based polymer and 0.01 to 2 parts by weight of a Bunte salt per 100 parts by weight of the conjugated diene-based polymer, in the presence of water whose amount is from 0.1 to 1,000 parts by weight per one part by weight of the Bunte salt.

Abstract: A modified conjugated diene polymer comprises a modifying group based on a low molecular weight compound having two or more tertiary amino groups and one or more alkoxysilyl groups in a molecule which bonds to a conjugated diene polymer obtained by polymerization of a conjugated diene compound or a conjugated diene polymer obtained by copolymerization of a conjugated diene compound and an aromatic vinyl compound. The process for producing the modified conjugated diene polymer comprises the steps of: polymerizing a conjugated diene compound or copolymerizing a conjugated diene compound and an aromatic vinyl compound in a hydrocarbon solvent using an alkali metal initiator and/or an alkaline earth metal initiator; and reacting active terminals of the resulting polymer with a low molecular weight compound having two or more tertiary amino groups and one or more alkoxysilyl groups in the molecule.

Abstract: A macromolecule including a polymer and a polyhedral radical chemically bonded to a terminus of the polymer provides numerous processing and performance advantages. Further functionalization of this macromolecule also is described as being advantageous in certain circumstances. Methods of providing, functionalizing, and utilizing the macromolecule also are provided.

Abstract: A chain end modified polymer comprising the reaction product of a living anionic elastomeric polymer and a silane-sulfide modifier A preferred class of modifiers includes compounds represented by the formula: (RO)x(R)ySi—R?—S—SiR3, wherein Si is silicon; S is sulfur; O is oxygen; x is an integer selected from 1, 2 and 3; y is an integer selected from 0, 1, and 2; x+y=3; R is the same or different and is: (C1-C16) alkyl; and R? is aryl, alkylaryl, or (C1-C16) alkyl. The invention further includes methods for making such chain end modified polymers, their use in preparing vulcanized elastomeric polymer compositions, and articles made from such compositions, including pneumatic tires, tire treads, belts, and the like. The subject compositions exhibit lower Tan ? at 60° C. values, while maintaining good processing characteristics, and a good balance of physical properties, including: abrasion resistance, tensile strength, modulus and elongation at break.

Abstract: A primary modified polymer composed of (1) a hydrogenated polymer obtained by hydrogenating at least one non-hydrogenated polymer selected from the group consisting of polymers comprising conjugated diene monomer units and copolymers comprising conjugated diene monomer units and vinyl aromatic monomer units and (2) groups of a primary modifier having a functional group which are bonded to the polymer (1), which has a specific vinyl aromatic monomer unit content, a specific vinyl aromatic polymer block content, a specific weight-average molecular weight, and a specific degree of hydrogenation of the double bonds of conjugated diene monomer units; a secondary modified polymer obtained by reacting a primary modified polymer composed of (?) a base polymer and (?) groups of a primary modifier having a functional group which are bonded to the polymer (?) with a secondary modifier; and compositions comprising the primary or secondary modified polymer and at least one other component.

Abstract: A method for producing a conjugated diene polymer is provided that includes a step of polymerizing a conjugated diene-containing monomer in a hydrocarbon solvent in the presence of an alkali metal catalyst, thus giving a polymer having a catalyst-derived alkali metal at one terminus of a polymer chain comprising a conjugated diene-based monomer unit, and a step of reacting the polymer obtained in the step of polymerizing and a trialkoxysilane compound represented by the formula below. (In the formula, M denotes an oxygen atom or a sulfur atom, R1, R2, and R3 independently denote an alkyl group having 1 to 4 carbon atoms, m denotes an integer of 1 to 5, and n denotes an integer of 0 to 5.

Abstract: The present invention provides a rubber composition for a breaker, which achieves both good fuel economy and good breaking performance while simultaneously having excellent processability, and a pneumatic tire including a breaker produced using the rubber composition. The present invention relates to a rubber composition for a breaker, including: a rubber component that contains a modified natural rubber, the rubber having a phosphorus content of 200 ppm or less; and carbon black and/or a white filler, wherein the rubber composition contains 5% by mass or more of the modified natural rubber based on 100% by mass of the rubber component.

Abstract: The present invention provides a process for preparing an oil extended rubber, in which an effect on environments can be taken into consideration, provision for the future decrease of petroleum supply can be satisfied, and further, strength is excellent without molecular breakage, an oil extended rubber obtained by the preparation process, and a tire using the oil extended rubber. A process for preparing an oil extended rubber, comprising (a) a step of preparing an oil-in-water type emulsion by emulsifying a vegetable oil having an iodine value of not less than 135 with a surfactant, (b) a step of mixing said emulsion and a modified natural rubber latex, and then aging the mixture, and (c) a step of coagulating the mixture obtained in the step (b) to obtain a lump of a rubber, an oil extended rubber obtained by the preparation process, and a rubber composition for a tire and a tire which use the oil extended rubber.

Abstract: There is provided a rubber composition for a tread having excellent hardness and improving the processability and grip performance of a tire, and a tire comprising thereof. A rubber composition for a tread comprising 30 to 80 parts by weight of silica having a BET specific surface area of less than 150 m2/g and 10 parts by weight or less of carbon black based on 100 parts by weight of a rubber component comprising an epoxidized natural rubber, and a tire comprising thereof.

Abstract: A functionalized polymer includes a polymer chain and a terminal group linked to the chain through a functionality that contains one or more urethane groups. The functionalized polymer can be provided by reacting a nucleophile with a polymer having terminal iso(thio)cyanate functionality which, in turn, can be provided by reacting a terminally active polymer with a polyiso(thio)cyanate. Even polymers that contain substantial amounts of styrene mer can be used in the described process.

Abstract: The invention aims to provide a tire rubber composition that is excellent in the low heat build-up property (fuel economy), wet grip performance, and abrasion resistance, and can be suitably used for a tread (cap tread); and a tire rubber composition that is excellent in the low heat build-up property and breaking properties, and can be suitably used for a base tread or sidewall.

Abstract: A method for producing a conjugated diene polymer composition is provided that comprises the step of kneading a conjugated diene polymer, silica and a silane coupling agent using a kneading machine in the presence of 1 to 50 parts by weight of water and/or carbon dioxide relative to 100 parts by weight of the conjugated diene polymer.

Abstract: After hydrolyzing a phospholipid bonded to a molecular end of a natural rubber, a compound having a polar group reacting with a hydroxyl group is condensed with a hydroxyl group contained in the phospholipid-hydrolyzed natural rubber to thereby obtain a modified natural rubber in which a polar group is present at a molecular end. The modified natural rubber thus obtained in which a polar group is present at a molecular end is used for a rubber component of a rubber composition, whereby a rubber composition in which carbon black and silica as fillers are bonded to the rubber component to enhance a reinforcing effect and which is excellent in a low hysteresis loss property and abrasion resistance to a large extent is obtained. An enzyme or an alkali is used for hydrolyzing the phospholipid, and a condensing agent is used for condensing the polar group-containing compound.

Abstract: A conjugated diene polymer is provided that includes a conjugated diene-based monomer unit and a monomer unit based on a monomer represented by Formula (1) below, the polymer having at least one terminus modified by a compound represented by Formula (2) below wherein r is 0 or 1, R1 denotes a hydrocarbyl group having 1 to 10 carbon atoms or a group containing at least one atom selected from the atomic group consisting of a nitrogen atom, an oxygen atom, and a sulfur atom, and R2 denotes a group containing at least one atom selected from the atomic group consisting of a nitrogen atom, an oxygen atom, and a sulfur atom wherein n denotes an integer of 1 to 10, R3, R4, and R5 independently denote a hydrocarbyl group having 1 to 10 carbon atoms or a hydrocarbyloxy group having 1 to 10 carbon atoms, at least one of R3, R4, and R5 is a hydrocarbyloxy group, and R6 denotes a group containing at least one atom selected from the atomic group consisting of a nitrogen atom, an oxygen atom, and a sulfur atom.

Abstract: The invention relates to allyl functionalized precipitated silica, rubber compositions containing such silica, particularly sulfur cured rubber compositions, and articles of manufacture having a component thereof such as, for example tires. The invention particularly relates to synthetic amorphous silica, particularly a precipitated silica, treated with an allyl silane, particularly to a precipitated silica containing allyl functional groups.

Abstract: Mixtures of halogenated elastomers and latent curatives are provided that cure when subjected to sufficient heat to decompose the latent curative. Decomposition products include CO2 and N-nucleophiles, which participate in nucleophilic substitution reactions leading to crosslinking of the elastomers. Transparent thermoset products that were free of voids were produced.

Abstract: A macromolecule including a polymer and a polyhedral radical chemically bonded to a terminus of the polymer provides numerous processing and performance advantages. Further functionalization of this macromolecule also is described as being advantageous in certain circumstances. Methods of providing, functionalizing, and utilizing the macromolecule also are provided.

Abstract: Semi-conductive or insulating compositions including an ethylene/octane or butene copolymer and at least one additional polymer, such LDPE, are described. The compositions may also include carbon black and other additives.

Abstract: The rubber composition for a tire base tread includes a rubber component containing not less than 15% by weight of a terminal-modified diene rubber having a number average molecular weight prior to modification of 150000 to 400000, a filler, and a compound (vulcanizing agent) represented by the following general formula (1) in an amount of 0.5 to 5 parts by weight based on 100 parts by weight of the rubber component: (wherein R represents a benzyl group, and n represents an integer of 3 to 12.

Abstract: This invention relates to a rubber composition being excellent in the low heat buildup and fracture properties (resistance to crack growth). and more particularly to a rubber composition, characterized by compounding 10-100 parts by mass of an inorganic filler and/or carbon black based on 100 parts by mass of a rubber component including not less than 10 mass % of a modified conjugated diene-based polymer having a cis-1,4 bond content of not less than 90% and a vinyl bond content of not more than 1.2% and a primary amino group. In this case, the modified conjugated diene-based polymer is obtained by (1) reacting the predetermined conjugated diene-based polymer having an active terminal with a compound having two or more predetermined functional groups and (2) further reacting the resulting product with a compound having a primary amino group.

Abstract: There is provided a modified conjugated diene-based polymer having a silyl group substituted with one or more alkoxy groups, and one or more nitrogen atoms on the chain ends of a conjugated diene-based polymer, the modified conjugated diene-based polymer being obtained by polymerizing a conjugated diene compound, or copolymerizing a conjugated diene compound with an aromatic vinyl compound, by using a polyfunctional anionic polymerization initiator prepared from a polyvinyl aromatic compound and an organolithium compound in a range of a molar ratio (the polyvinyl aromatic compound/the organolithium compound) of from 0.05 to 1.0, so as to obtain the conjugated diene-based polymer, and by reacting a living polymer end of the conjugated diene polymer with the compound having a silyl group substituted with two or more alkoxy groups, and one or more nitrogen atoms.