Abstract: The present invention relates to a method for producing a modified conjugated diene-based polymer, the method comprising a step of reacting a conjugated diene-based polymer with an organometallic compound, and a step of reacting the resulting product and an epoxy compound.

Abstract: A novel silicone-acrylic copolymer which comprises a covalently bonded silicone polymer with an acrylic polymer through the —Si—O—Si— linkage is described. The silicone-acrylic copolymer is a reaction product of (a) a silicone polymer, (bi) a mixture of acrylic monomers wherein at least one acrylic monomer comprises a silane (meth)acrylic monomer and/or a siloxane (meth)acrylic macromer with a radical initiator to form an acrylic prepolymer or (bii) an acrylic polymer which comprises a silane or a siloxane functional group; and (c) a scrambling catalyst, wherein the ratio of the silicone polymer (a) and the mixture of acrylic monomers (bi) or polymer (bii) is from 50:1 to 1:50. The silicone-acrylic copolymer is useful as an adhesive, sealant, coating, and the like.

Abstract: The present invention provides a conjugated diene polymer, a method for producing a conjugated diene polymer, a conjugated diene polymer composition and a method for producing a conjugated diene polymer composition. The conjugated diene polymer is a conjugated diene polymer having a conjugated diene-based monomer unit and a group of the formula (I), wherein assuming the whole area of the molecular weight distribution curve obtained by gel permeation chromatography as 100%, the peak area of the molecular weight peak at the lowest molecular weight side is not less than 50%: wherein R1 and R2 represent independently a hydrocarbon group, hydrocarbon oxy group or hydroxyl group, m represents an integer of 0 to 10, and A1 represents a polar functional group free of an active hydrogen atom.

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 nitroso compound.

Abstract: A functionalized polymer includes a directly bonded moiety, which can be located at a terminus of the polymer, defined by the formula CR1R2NH—OSi where each R1 and R2 independently is a substituted or unsubstituted hydrocarbyl group and where the Si atom can be bonded through similar moieties to up to three other polymers and/or to the appropriate number of non-interfering groups. The polymer can be provided by introducing a ketoximesilane compound into a system that includes carbanionic (living) polymer. Such polymers can be used in the production of compositions that include particulate fillers.

Abstract: A silicone acrylate hybrid composition includes the reaction product of a silicon-containing pressure sensitive adhesive composition, an ethylenically unsaturated monomer, and an initiator. The silicon-containing pressure sensitive adhesive composition includes acrylate or methacrylate functionality. A method of making the hybrid composition includes polymerizing the ethylenically unsaturated monomer and the silicon-containing pressure sensitive adhesive composition in the presence of the initiator.

Abstract: Toughened thermosetting resins comprising thermosetting resins and rubber particles having an average particle size in the range of 20 to 500nm. The toughened resins are obtained by mixing a fully vulcanized powdery rubber having an average particle size in the range of 20 to 500nm with thermosetting resin prepolymers and then curing them. The toughened thermosetting resins comprise rubber phases having a small, uniform and stable particle size, which results in a very significant toughening effect, especially when crazes rapidly grow (as in a standard Izod impact test). The toughened thermosetting resins are excellent in impact resistance, strength, modulus and heat resistance, and when appropriately toughened, the thermosetting resins can be enhanced in terms of impact strength, glass transition temperature and heat distortion temperature.

Abstract: Polymer electrolytes offer increased safety and stability as compared to liquid electrolytes, yet there are a number of new challenges that polymer electrolytes introduce. A polymer electrolyte, as disclosed herein, is a block copolymer that has a block that provides mechanical strength and a novel, ionically-conductive polymer block with a backbone that is both highly flexible and highly conductive with high conductivity pendant chains attached, thus increasing the concentration of lithium coordination sites and improving ionic conductivity. Previous strategies for comb-type conductive polymers have focused on attaching either conductive pendant chains to a flexible non-conductive backbone or conductive pendant groups to a marginally flexible conductive backbone.

Abstract: The present invention relates to a diene rubber composition reinforced with an inorganic filler comprising a thermoplastic polymer bearing, at at least one end, a silanol or silyl ether functional group. The presence of the functional thermoplastic polymer makes it possible to improve the compromise of performances, which are the handling and the grip, of a tyre having a tread that is based on such a composition.

Abstract: Disclosed is an interfacial polymer for a network used as a coupling agent in mixing of rubber-silica. More particularly, the interfacial polymer for a rubber-silica network is a block copolymer containing a copolymer of conjugated diene and vinyl aromatic monomers, in which when used as a coupling agent in the mixing of synthetic rubber and silica (an inorganic material), the polymer enhances silica dispersibility within the rubber, and improves compatibility and processability, resulting in considerable improvement in the dynamic property as well as the mechanical property of the rubber, and when used in a tire, etc., it enhances automobile braking performance and reduces rolling resistance.

Abstract: The invention relates to a process for grafting hydrolysable silane groups to a polyolefin in which ethylene units, if present, form less than 50% by weight of the total polyolefin. The polyolefin is reacted with an unsaturated silane, having at least one hydrolysable group bonded to Si, or a hydrolysate thereof, in the presence of means capable of generating free radical sites in the polyolefin. The unsaturated silane has the formula R?—CH?CH—Z (I) or R?—C?C—Z (II) in which Z represents an electron-withdrawing moiety substituted by a —SiRaR?(3-a) group wherein R represents a hydrolysable group; R? represents a hydrocarbyl group having 1 to 6 carbon atoms; a has a value in the range 1 to 3 inclusive; and R? represents hydrogen or a group having an electron withdrawing or any other activation effect with respect to the —CH?CH— or —C?C— bond.

Abstract: The present invention describes a composition comprising a diene-based rubber and at least one cyclo-aliphatic epoxide-based polyether or polyglycol ether. The present invention also describes a composition comprising at least one extending oil and at least one cyclo-aliphatic epoxide-based polyether or polyglycol ether, wherein the at least one extending oil is selected from the group consisting of an aromatic oil, an aliphatic oil, a naphthenic oil, and mixtures thereof.

Abstract: This invention refers to a process for the preparation of a 1,3-butadiene and styrene copolymer, containing a random section in its main chain, followed by a block with a structure differentiated from the main chain, homopolymeric or copolymeric, functionalized, and the product obtained from this.

Abstract: A crosslinkable rubber composition includes, as essential components: (A) an ethylene-?-olefin-nonconjugated polyene random copolymer rubber in which the nonconjugated polyene has a terminal vinyl group-containing norbornene compound represented by the following general formula (1) or (II), wherein n is an integer of 0 to 10, R1 is H or an alkyl group, and R2 is H or an alkyl group, wherein R3 is H or an alkyl group, and which has a viscosity of not less than 10 Pa·s and less than 1,000 Pa·s at 25° C. under a shear rate of 10 s?1; (B) an organopolysiloxane which has three repeating units of siloxane represented by the following formula and which has three Si-bonded hydrogen atoms per molecule, wherein R4 is a monovalent hydrocarbon group; (C) a reinforcing filler; (D) a curing catalyst; and (E) a curing reaction retarder.

Abstract: A subject-matter of the present invention is a rubber composition intended for the manufacture of tires or of tire semi-finished products, based on at least one isoprene elastomer, an inorganic filler as reinforcing filler and a polyfunctional organosiloxane coupling agent capable of providing the bonding between the reinforcing inorganic filler and the isoprene elastomer, comprising per molecule, grafted to its silicon atoms, on the one hand at least one hydroxyl or hydrolysable functional group allowing it to be grafted to the reinforcing inorganic filler and, on the other hand, at least one group bearing at least one azodicarbonyl functional group —CO—N?N—CO— allowing it to be grafted to the isoprene elastomer.

Abstract: Provided is a process for making a saturated star hydrocarbon polymer. The process has the following steps: (A) hydrosilylating tetraethylene silicon with methyldichlorosilane in the presence of a hydrosilylating catalyst to form a chlorosilane dendrimer; (B) reacting the chlorosilane dendrimer with vinylmagnesium bromide in the presence of a lithium and/or organolithium initiator stepwise to build a higher generation chlorosilane dendrimer; (C) anionically polymerizing polybutadiene in the presence of a lithium and/or organolithium initiator to form living poly(butadienyl)lithium; (D) attaching the living poly(butadienyl)lithium to the higher generation dendrimer to form a star polybutadiene; and (E) hydrogenating the star polybutadiene to form the saturated star hydrocarbon polymer. There is also provided a saturated star hydrocarbon polymer made according to the above process and a polymer composition of a matrix ethylene polymer and the saturated star hydrocarbon polymer.

Abstract: The present invention provides a crosslinkable and expandable elastomeric material based on and/or containing siloxane polymer, the process for manufacturing of such material and the use of such material and its blends and composites.

Abstract: A modified conjugated diene rubber is disclosed. A method for producing the modified conjugated diene rubber includes providing an alkali metal ion-containing conjugated diene rubber; and reacting the alkali metal ion-containing conjugated diene rubber with an alkoxysilane to generate the modified conjugated diene rubber, the alkoxysilane being of the structural formula: wherein R1, R2, R3 are each independently selected from a group consisting of oxygen-containing C2-C12 group and nitrogen-containing C3-C12 group, the oxygen-containing C2-C12 group has a carbon atom directly connected to oxygen atom of the alkoxysilane, the nitrogen-containing C1-C12 group has a nitrogen atom directly connected to oxygen atom of the alkoxysilane, and R4 is selected from a group consisting of C3-C12 of alkyl, alkenyl, aryl, and alkoxy.

Abstract: Methods of modifying block copolymers to enhance thermodynamic properties thereof without sacrificing material properties and methods of forming modified block copolymers having desired properties are disclosed. The modified block copolymers may be used, for example, as a mask for sublithographic patterning during various stages of semiconductor device fabrication. For example, block copolymers having desirable material properties, such as etch selectively, may be chemically modified to tailor a ? value thereof to optimize the process conditions for achieving a self-assembled state and to reduce a defectivity of the self-assembled block copolymer pattern.

Abstract: The present invention provides an end-modified diene copolymer having excellent compatibility with silica as a reinforcement material, and a preparation process thereof, in which the end-modified diene copolymer is prepared by preparing a living polymer of a conjugated diene monomer and/or a vinyl aromatic monomer, modifying the living polymer with a reactive organosiloxane compound, and then modifying the end of the living polymer, to which the organosiloxane compound has not been coupled, with an organosilane compound having various functional groups. When the end-modified diene copolymer is used as a rubber material in the manufacture of a silica tire, the dispersion of silica in the copolymer can be improved and the bonding strength between silica and the rubber can be significantly increased, thereby manufacturing a high-quality silica tire.

Abstract: To provide a modified polymer substrate that has both excellent releasability from an accretion adhering to a surface of the substrate and functions for intended use other than releasability, and to provide a method for producing the modified polymer substrate. A modified polymer substrate (1) includes a polymer substrate (2) containing an organic component having unsaturated carbon-to-carbon double bonds, and an organic group having a functional group (R1) arranged to provide functions to a surface of the polymer substrate, wherein the organic group is bonded to the surface of the polymer substrate via an isocyanuraic acid backbone by bringing a treatment solvent (3) that contains (a) a trichloroisocyanuric acid and (b) a compound having an unsaturated carbon-to-carbon double bond and an organic group having a functional group (R1) arranged to provide functions to the surface of the polymer substrate into contact with the surface of the polymer substrate.

Abstract: An amine-containing alkoxysilyl-functionalized polymer, a method of preparing a reactive polymer functionalized with an alkoxysilane functionalizing agent and further reacted with an amino alcohol, the resulting polymer, and vulcanizates thereof.

Abstract: The invention relates to the use of polyorganosiloxanes having 3 or more siloxane units, which have one or more organic fractions R1, where R1 has one or more carbon-carbon multiple bonds and at least 4 carbon atoms, and wherein the presence of hydrocarbon fractions having a chain length of 5 to 50 carbon atoms is excluded, as additives in the processing of rubber. The polyorganosiloxanes are used in the processing and vulcanisation of rubber in a quantity of 0.1 to 10 phr and incorporated by reaction in same. Said polyorganosiloxanes produce a reduction in the viscosity of the rubber during processing and optionally an improvement in the mechanical properties of the vulcanised rubber.

Abstract: Carbanionic polymer chains that contain polyene mer can be provided with a block derived from one or more ethylenically unsaturated functional monomers after being reacted to include, at their respective termini, one or more, although preferably one, unit that is the radical of a cyclic compound, the ring structure of the cyclic compound comprising silicon atoms alternating with O, S or N atoms.

Abstract: A composition for producing an organic insulator is provided which comprises an organic-inorganic hybrid material (as defined). The hybrid material shows high solubility in organic solvents and monomers, and superior adhesion to substrates. In addition, the hybrid material displays a high dielectric constant and a high degree of crosslinking. Based on these advantages, the composition comprising the organic-inorganic hybrid material can be utilized during the fabrication of various electronic devices by a wet process. A method for producing the organic insulator while utilizing the composition also is provided, as well as the resulting organic insulator, and an organic thin film transistor which incorporates the resulting insulating layer.

Abstract: A method for producing a modified conjugated diene-based polymer having a good balance between the hysteresis loss properties and the wet skid resistance, practically sufficient abrasion resistance and breaking strength, and high processability when formed into a vulcanized product is provided. A method for producing a modified conjugated diene-based polymer, comprising: a polymerization step of polymerizing a conjugated diene compound, copolymerizing conjugated diene compounds, or copolymerizing a conjugated diene compound with an aromatic vinyl compound using an alkali metal compound or an alkaline earth metal compound as a polymerization initiator to obtain a conjugated diene-based polymer having an active end, and a modifying step of reacting a compound represented by following formula (1) with the active end of the conjugated diene-based copolymer.

Abstract: Moisture curable one-component organosilicon compositions exhibiting excellent resilience and adhesiveness contain an ?-alkoxysilyl-terminated base polymer, aminoalkylalkoxysilane adhesion promoter, and polyolefin bearing succinic anhydride groups.

Abstract: A novel silicone-acrylic copolymer which comprises a covalently bonded silicone polymer with an acrylic polymer through the —Si—O—Si— linkage is described. The silicone-acrylic copolymer is a reaction product of (a) a silicone polymer, (bi) a mixture of acrylic monomers wherein at least one acrylic monomer comprises a silane (meth)acrylic monomer and/or a siloxane (meth)acrylic macromer with a radical initiator to form an acrylic prepolymer or (bii) an acrylic polymer which comprises a silane or a siloxane functional group; and (c) a scrambling catalyst, wherein the ratio of the silicone polymer (a) and the mixture of acrylic monomers (bi) or polymer (bii) is from 50:1 to 1:50. The silicone-acrylic copolymer is useful as an adhesive, sealant, coating, and the like.

Abstract: It is an object of the present invention to provide a rubber composition having: excellent sealing properties, heat resistance and acid resistance; a low reaction force, low hardness and low compression set; and excellent low-temperature recovery properties that contribute to sealing properties particularly in low-temperature environment. It is another object of the invention to provide uses of the rubber composition and main bodies on which the rubber composition has been mounted. The rubber composition of the present invention comprises a specific ethylene/?-olefin/non-conjugated polyene copolymer [A], a SiH group-containing compound [B] having two SiH groups in one molecule, and a SiH group-containing compound [C] having three SiH groups in one molecule.

Abstract: The sliding material is obtainable by extrusion of a raw material containing an olefin-based polymer and a silicone compound as the essential components. A part of the olefin-based polymer forms a crosslinked material in the sliding material. The crosslinked material forms domains to disperse in the sliding material so as to prevent uneven distribution of the silicone compound in the extrusion direction. The residual fraction of hot xylene reflux of the sliding material is in a range from 33 to 75% by weight based on the total weight of the sliding material, and the content of the silicone compound based on the total weight of the sliding material is in a range from 5 to 35% by weight.

Abstract: A thermoplastic polyurethane composition includes thermoplastic polyurethane (TPU), a polysiloxane, an acetal polymer, and an acrylonitrile-butadiene-styrene (ABS) copolymer. A method of forming the TPU composition includes the step of combining the TPU, the polysiloxane, the acetal polymer, and the ABS copolymer. The thermoplastic polyurethane composition is also used to form an article. The TPU composition has an increased abrasion resistance and decreased coefficient of friction as compared to existing TPUs.

Abstract: A conjugated diene polymer is provided that comprises a conjugated diene-based constituent unit and a constituent unit of formula (I) below, at least one terminus of the polymer being modified by a compound of formula (II): wherein X1, X2, and X3 independently denote a group of formula (Ia) below, a hydroxy group, a hydrocarbyl group, or a substituted hydrocarbyl group, and at least one of X1, X2, and X3 is a group of formula (Ia) below or a hydroxy group, wherein R1 and R2 independently denote a hydrocarbyl group having 1 to 6 carbon atoms, a substituted hydrocarbyl group having 1 to 6 carbon atoms, a silyl group, or a substituted silyl group, and R1 and R2 may be bonded so as to form, together with the nitrogen atom, a ring structure, wherein n denotes an integer of 1 to 10, R3, R4, and R5 independently denote a hydrocarbyl group having 1 to 4 carbon atoms or a hydrocarbyloxy group having 1 to 4 carbon atoms, at least one of R3, R4, and R5 is a hydrocarbyloxy group, and A denotes a

Abstract: The present invention relates to a liquid silicone elastomer composition comprising an unsaturated polyorganosiloxane having at least two unsaturated bonds, a hydrogenopolyorganosiloxane having at least two silicon-hydrogen bonds, a hydrosilylation catalyst, and silica. The invention is remarkable in that the composition further comprises an unsaturated organic polymer having at least two unsaturated bonds, and a cross-linking agent specific to said unsaturated organic polymer.

Abstract: Methods of modifying block copolymers to enhance thermodynamic properties thereof without sacrificing material properties and methods of forming modified block copolymers having desired properties are disclosed. The modified block copolymers may be used, for example, as a mask for sublithographic patterning during various stages of semiconductor device fabrication. For example, block copolymers having desirable material properties, such as etch selectively, may be chemically modified to tailor a ? value thereof to optimize the process conditions for achieving a self-assembled state and to reduce a defectivity of the self-assembled block copolymer pattern.

Abstract: Disclosed are a conjugated diene-based polymer from which a polymer composition excellent in fuel cost-saving properties and elongation at break can be obtained, a polymer composition containing the conjugated diene-based polymer and a reinforcing agent, and a process for producing the conjugated diene-based polymer. A conjugated diene-based polymer obtained by reacting one end of a polymer having a monomer unit based on a conjugated diene, a monomer unit based on a compound represented by the following formula (1), and a monomer unit based on a compound represented by the following formula (2) with an alkoxysilane compound. V1—S1??(1) wherein V1 represents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and S1 represents a substituted silyl group. V2-A2??(2) wherein V2 represents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and A2 represents a substituted amino group, or a nitrogen-containing heterocyclic group.

Abstract: The present invention relates to a specific functionalized diene elastomer. This functionalized elastomer exhibits a reduced cold flow without, however, damaging the properties of a reinforced rubber composition in which it is present, in particular the processing properties and the hysteresis properties. This functionalized diene elastomer carries, at the chain end, a silanol functional group or a polysiloxane block having a silanol end and is partially coupled by or star-branched by tin.

Abstract: The use of a functionalized organosilicon compound as a coupling agent between an inorganic filler and an elastomer in an elastomer composition including an isoprene elastomer and a reinforcing inorganic filler is disclosed. The compound is selected among functionalized organosilicon compounds including at least one double bond C?C or C?N, and not including any C?C—C?O bonds or N?N bonds, and reacting with the isoprene units according to an electrocyclic reaction, in particular according to a standard cycloaddition reaction [2+1], [2+2], [3+2] or a Diels-Alder reaction [4+2] or an ene-synthesis reaction other than an ene-synthesis reaction between an isoprene unit and a C?C—C?O or N?N function. Also described, are elastomer composition(s) obtained and items manufactured using such compositions.

Abstract: A method for producing a modified conjugated diene polymer includes a modification step (A) that subjects a conjugated diene polymer having a cis-1,4-bond content of 98.5% or more and possessing an active end to a modification reaction to introduce an alkoxysilane compound having two or more reactive groups including an alkoxysilyl group into the active end of the conjugated diene polymer, and a condensation step (B) that subjects the residue of the alkoxysilane compound introduced into the active end to a condensation reaction in the presence of a condensation catalyst that includes at least one element among the elements of the groups 4A, 2B, 3B, 4B, and 5B in the periodic table. The method can produce a modified conjugated diene polymer that exhibits low heat build-up and excellent wear resistance.

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: The invention provides a fluoropolymer composition capable of improving the characteristics of the cured material obtained therefrom. A fluoropolymer composition comprising a methylene group-containing fluoropolymer (A) and a hydrosilylation catalyst (B), wherein the methylene group-containing fluoropolymer (A) has methylene group-containing repeating units in the main chain thereof and is capable of hydrosilylation in the presence of the hydrosilylation catalyst (B) and one terminus of the chain is a carbon-carbon double bond or an Si—H group and the other terminus of the chain is an Si—H group or a carbon-carbon double bond.

Abstract: The invention discloses a terminal-modified conjugated diene-vinyl aromatic copolymer and a method for manufacturing the same. The method comprises the following steps. An organic alkali metal initiator is added into a first mixture containing a conjugated diene monomer and a vinyl aromatic hydrocarbon monomer to perform reaction to obtain a conjugated diene-vinyl aromatic copolymer with active terminal. The conjugated diene-vinyl aromatic copolymer with active terminal reacts with polysiloxane to obtain a terminal-modified conjugated diene-vinyl aromatic copolymer. The aforementioned polysiloxane is expressed as chemical formula (I): R1, R2, R3 and R5 independently are alkyl group with 1˜20 carbon atoms. R4 is selected from one of alkyl group, alkoxy group or hydroxyl group with 1˜5 carbon atoms, m is an integer of 2˜50, and n is an integer of 0˜50.

Abstract: A modified conjugated diene-vinyl aromatic copolymer and a method for manufacturing the same are provided. The modified conjugated diene-vinyl aromatic copolymer is formed by modifying a conjugated diene-vinyl aromatic copolymer by reacting with a first modifier in a solvent and then reacting with a second modifier. The solvent contains an organic alkali metal initiator. The first modifier is expressed as chemical formula (I): The second modifier is expressed as chemical formula (II): R1 is selected from one of hydrogen, methyl group or ethyl group. R2 is selected from hydrogen. R3 is selected from one of hydrogen, methyl group or ethyl group. X is selected from one of epoxypropoxy group, isocyanate group or 2-(3,4-epoxycyclohexyl) group. R4 is selected from one of alkyl groups with 2˜3 carbon atoms.

Abstract: The present invention relates to a method for producing a hydrogenated block copolymer, comprises the steps of: (a) forming a block copolymer by allowing a living polymer having a specific structure to react with a bis-silane coupling agent having a specific structure; (b) hydrogenating the block copolymer to form a hydrogenated block copolymer; and (c) isolating the resultant hydrogenated block copolymer, in which the number of functional groups derived from the coupling agent in the hydrogenated block copolymer isolated in the step (c) is 1.5 or less per block copolymer molecule; a hydrogenated block copolymer obtained by the method; and a composition containing the hydrogenated block copolymer.

Abstract: The invention relates to a silica reinforced rubber composition comprised of low Tg polybutadiene, particularly high cis 1,4-polybutadiene or high trans 1,4-polybutadiene with or without functional groups, and high Tg styrene/butadiene elastomers, particularly functionalized styrene/butadiene, elastomers, together with high Tg liquid unsaturated conjugated diene-based polymer, particularly styrene/butadiene polymer, which can also be functionalized, and high glass transition or softening point temperature (Tm or Tg) resins, particularly high Tg styrene/alpha methylstyrene resin. The invention relates to a tire having a tread comprised of such rubber composition.

Abstract: A formable curable elastomer composition comprising a dispersion of a cured organic elastomer, such as EPDM, butyl rubber and hydrogenated nitrile butyl rubber, is provided in an uncured silicone elastomer. The organic elastomer is cured by a phenol-formaldehyde resin. These compositions can generally be used in applications where silicone rubber is used, and in particular where the cured rubber is liable to be exposed to temperatures of 150-200° C. Examples of such uses include tyre bladders used in the moulding of tyres, spark plug boots for internal combustion engines, wire and cable coatings designed to be used at high temperatures and ceramifiable wire and cable coatings used in safety critical applications such as emergency lighting systems.

Abstract: The present invention relates to a method for producing a hydrogenated block copolymer, including the steps of: (a) forming a block copolymer by allowing a living polymer having a specific structure to react with a tetra- or more functional silane coupling agent; (b) hydrogenating the block copolymer to form a hydrogenated block copolymer; (c) isolating the resultant hydrogenated block copolymer; and (d) deactivating a functional group in the silane coupling agent and/or an unreacted functional group present in a coupling agent residue in the block copolymer or the hydrogenated block copolymer prior to the step (c), in which the number of functional groups derived from the coupling agent in the hydrogenated block copolymer recovered in the step (c) is 1.5 or less per block copolymer molecule; a hydrogenated block copolymer obtained by the method; and a composition containing the hydrogenated block copolymer.

Abstract: The present invention is a polyolefin polymer containing vinyl groups at both ends thereof, and a composition and a molded product containing the polymer, wherein the polymer contains a constitutional unit derived from at least one selected from the group consisting of ethylene (a), an ?-olefin (b) having 3 to 20 carbon atoms, and a cyclic olefin (c), and (1) a ratio of terminal vinylation is 70% or more relative to all of both ends of molecular chains, and (2) an intrinsic viscosity [?] is in the range of 0.01 to 10 dl/g as measured in a decalin solution at 135° C. The polymer of the present invention may be molded by a LIM molding, an injection molding, a transfer molding, a compression molding, and the like, and is excellent in acid resistance, gas permeation resistance, hydrolysis resistance, and dynamic fatigue resistance. From the polymer, a thermoplastic resin composition and a crosslinkable resin composition, and a crosslinked composition having excellent mechanical characteristics are obtained.

Abstract: A novel polymeric compound is provided. The polymeric compound is highly compatible with reinforcing materials. Particularly, the polymeric compound is highly miscible with inorganic reinforcing materials in the manufacture of a tire. Further provided is a novel bifunctional initiator necessary to prepare the polymeric compound. The bifunctional initiator contains amine moieties. Active ends of the polymer are modified with an alkoxysilane compound. The polymer has an improved affinity for carbon black and silica as reinforcing materials in the manufacture of a tire. Therefore, the use of the polymer can achieve desired physical properties required in a tire, e.g., high wet traction, low rolling resistance and high tread wear.

Abstract: A core-shell particle is formed by a method that includes forming a crosslinked polyorganosiloxane core, reacting a graftlinking agent with the crosslinked polyorganosiloxane core, and polymerizing a poly(alkenyl aromatic) shell around the graftlinking agent-functionalized polyorganosiloxane core. The method produces a core-shell particle with improved adhesion between shell and core. The core-shell particle is useful as an impact modifier in thermoplastic compositions.

Abstract: An amine-containing alkoxysilyl-functionalized polymer, a method of preparing a reactive polymer functionalized with an alkoxysilane functionalizing agent and further reacted with an amino alcohol, the resulting polymer, and vulcanizates thereof.