Abstract: The present invention relates to a rubber composition with an excellent grip force; a method of producing the rubber composition; a shoe sole, a shoe, and a tire each using the rubber composition; and a method of improving a frictional force of a rubber component.

Abstract: Thermoplastic compositions useful for sealing longitudinal joints of substrates, for example, roadways and pavement, are provided herein. Formulations including the composition and methods of using the thermoplastic composition to seal longitudinal joints are also disclosed.

Abstract: A rubber composition including 100 parts by mass of a diene rubber containing natural rubber, and blended with from 40 to 80 parts by mass of carbon black, cobalt neodecanoate borate represented by the following Chemical Formula (1), a phenolic resin, a curing agent, sulfur, and a vulcanization accelerator, wherein the carbon black has DBP oil absorption of from 50×10?5 to 80×10?5 m3/kg, and iodine adsorption of from 100 to 150 g/kg, and a vulcanized rubber has characteristics of a dynamic storage modulus (E?) at a dynamic strain of 2% and at 20° C. of 8 MPa or more, a tangent loss (tan ?) at 60° C. of 0.20 or less, and the number of times of repetition until fracture is caused in a constant strain fatigue test at a strain of 60% and at 400 rpm of 45,000 or more.

Abstract: The present invention relates to a method of producing a rubber, comprising (co)polymerizing at least one diene monomer and optionally at least one vinylaromatic monomer, and a vinyl-silicone compound, in the presence of a functionalizing lithium initiator, and modifying the obtained (co)polymer by a poly functional silicon-containing agent. The functionalizing lithium initiator is obtained by reacting an organolithium compound, a secondary amine and a diene-containing compound. In addition, the instant inventon relates to rubbers obtained by said method, rubber compositions and vulcanizates based thereon, semi-finished products and tires, comprising such a rubber. The present invention provides obtaining of rubber compositions and vulcanizates based thereon characterized by the improved complex of histeresis properties.

Abstract: Thermoplastic compositions useful for sealing longitudinal joints of substrates, for example, roadways and pavement, are provided herein. Formulations including the composition and methods of using the thermoplastic composition to seal longitudinal joints are also disclosed.

Abstract: The present invention is directed to a vulcanizable rubber composition comprising (A) 100 parts by weight of elastomer consisting of 70 to 100 parts by weight, er 100 parts by weight of the elastomer (phr), of an isoprene-butadiene rubber having a Tg ranging from ?100° C. to ?50° C., and 0 to 30 phr of a second elastomer selected from the group consisting of isoprene-butadiene rubber having a Tg ranging from ?49 to ?20° C., natural rubber, synthetic polyisoprene, and polybutadiene, (B) from 30 to 80 phr of a resin having a Tg of at least 20 C, (C) from 0 to 4 phr of an oil, and (D) from 80 to 180 of a filler selected from the group consisting of carbon black and silica.

Abstract: A polymer blend consisting of (a) 60-96 percent by weight of a high molecular weight first elastomeric polymer, (b) 4-35 percent by weight of a low molecular weight second polymer, and optionally (c) 0-13 percent by weight of an extender oil, wherein the amounts of the components (a), (b) and (c) are based on the total weight of the polymer blend.

Abstract: It is desired to teach an open footwear article where the upper surface contacting the foot is partially combined with, or wholly comprised of, a substantially rigid material that has some degree of open porosity. The purpose of said rigid, porous material serves to immediately absorb perspiration and/or water from the feet. Subsequent drying of the porous, rigid material occurs when the sandal is not in use as water/perspiration are evaporated from within the pores. The porous, rigid material also effects a massaging action while walking. It is the intent of this invention to capture a preferred combination of these two embodiments.

Abstract: A purpose of the present invention is to provide a tire assuring that clogging of snow and sticking of snow are inhibited, particularly a tire assuring that clogging of snow and sticking of snow can be inhibited and having good performance on ice and snow and abrasion resistance without depending on the tread pattern form while maintaining wet grip performance and abrasion resistance. The tire is composed of a rubber composition which comprises a rubber component comprising a modified butadiene rubber and silica and has a pure water contact angle of from 125° to 140°.

Abstract: The present invention relates to a modified polymer obtained by grafting a compound comprising at least one group Q, and at least one group A bonded together by at least, and preferably, one “spacer” group Sp in which: Q comprises an azo-carbonyl group capable of being grafted onto the polymer chain by an “ene reaction”, A comprises an associative group comprising at least one nitrogen atom, Sp is an atom or a group of atoms forming a bond between Q and A.

Abstract: The present invention provides a method for producing a rubber composition containing a rubber component (A) of at least one selected from natural rubbers and synthetic dienic rubbers, an inorganic filler (B), a silane coupling agent (C) and an acidic compound (D), wherein the rubber composition is kneaded in multiple stages, and in the final stage of kneading, the acidic compound (D) is added, and the highest temperature of the rubber composition in the final stage of kneading is from 60 to 120° C. The production method enables production of a rubber composition having a low-heat-generation property while successfully preventing the coupling function activity of the silane coupling agent from lowering.

Abstract: According to a method for producing a modified conjugated diene rubber, the method involves a step of obtaining a modified conjugated diene rubber by reacting a conjugated diene compound or a conjugated diene polymer which is obtained by polymerizing a conjugated diene compound and an aromatic vinyl compound and has an alkali metal or alkaline-earth metal active end, with a first hydrocarbyloxysilane compound having an alkyl polyether group and a group convertible into an onium, and a conjugated diene rubber which can be used as a starting material for a crosslinked rubber that is used in applications such as a tire tread and is capable of improving the low fuel consumption performance is provided.

Abstract: A non-skid coating described herein attempts to overcome the deficiencies of the conventional coatings with improved external durability and color retention, a reduced level of VOCs, and direct-to-metal (DTM) adhesion using organo-siloxane chemistry. The non-skid coating has a first component having an amino-functional siloxane resin; a second component having a non-aromatic epoxy resin; a spherical filler for lowering viscosity; a pigment; a coarse aggregate; and a thixotropic agent. The amino-functional siloxane resin can be an amino-functional methyl phenyl polysiloxane, diphenyl polysiloxane or silsesquioxane-based resin. The non-aromatic epoxy resin can be cycloaliphatic or aliphatic. The first component is about 5% to 20% weight of the coating, and the second component is about 80% to 95% weight of the coating.

Abstract: An elastomer composition includes guayule rubber and a butadiene rubber, with at least about 5 phr guayule rubber based on 100 phr elastomer. The cured rubber has a higher coefficient of friction as compared to a cured rubber of the same formulation except using Hevea rubber rather than guayule rubber.

Abstract: A non-skid coating described herein attempts to overcome the deficiencies of the conventional coatings with improved external durability and color retention, a reduced level of VOCs, and direct-to-metal (DTM) adhesion using organo-siloxane chemistry. The non-skid coating has a first component having an amino-functional siloxane resin; a second component having a non-aromatic epoxy resin; a spherical filler for lowering viscosity; a pigment; a coarse aggregate; and a thixotropic agent. The amino-functional siloxane resin can be an amino-functional methyl phenyl polysiloxane, diphenyl polysiloxane or silsesquioxane-based resin. The non-aromatic epoxy resin can be cycloaliphatic or aliphatic. The first component is about 5% to 20% weight of the coating, and the second component is about 80% to 95% weight of the coating.

Abstract: A low copper-containing friction material composition used for brake pad is provided, which consists of 4-6 parts of aramid fiber, 2-2.5 parts of tire powder, 5-6 parts of magnesia, 5-6 parts of red vermiculite, 8-10 parts of ceramic fiber, 3.5-5 parts of magnetite, 7-8 parts of boron-containing phenolic resin, 15-17 parts of calcium sulfate crystal whisker, 16-18 parts of potassium titanate, 15-17 parts of barite, 5.5-7 parts of flake graphite, 6-8 parts of friction powder of cashew nut oil, 6-8 parts of calcined petroleum coke, 1.5-2 parts of boron nitride, 5-7 parts of flake aluminum powder, 0.4-0.5 parts of pure copper fiber, and 0.4-0.6 parts of black silicon carbide. The friction material composition has low content of heavy metal, wherein the content of copper is lower than 0.5%, has a satisfactory high temperature and thermal decay resistant performance, long service life, good abrasion resistance and stable friction coefficient.

Abstract: A copper-flee friction material composition for brake pads consists of: 0.43 parts of aramid fiber, 1.9 parts of tire powder, 6 parts of heavy magnesia, 2.55 parts of calcined petroleum coke, 8 parts of ceramic fiber, 6.5 parts of phenolic resin, 14 parts of aluminum silicate fiber, 22 parts of potassium hexatitanate crystal whisker, 25 parts of barite powder, 5 parts of granular graphite, 2 parts of antimony sulfide, 2.8 parts of friction powder of cashew nut oil, 0.9 part of boron nitride, 5 parts of flake aluminum powder, and 0.6 parts of tantalum carbide. Trials show that it has satisfactory high temperature and thermal decay resistant performance, long service life, good abrasion resistance and stable friction coefficient. With the friction material of the present invention used, the brake pad of vehicles is sensitive and stable during braking, produces no screech, is comfortable and has no damage on coupling plate.

Abstract: The present invention provides a process for producing a conjugated diene-based polymer comprising polymerizing a monomer component comprising a conjugated diene compound and a silicon-containing vinyl compound using the following compounds (I) and (II), as a polymerization initiator component, (I) an organic alkali metal compound (II) a compound represented by the following formula (I) wherein R11 and R12 represent a hydrocarbyl group having 1 to 20 carbon atoms optionally having a substituent.

Abstract: The present invention provides a process for producing a conjugated diene-based polymer, comprising polymerizing a monomer component containing a conjugated diene compound and a silicon-containing vinyl compound using a polymerization initiator represented by the following formula (1) wherein, R11 represents a hydrocarbylene group having 6 to 100 carbon atoms, R12 and R13 represent a hydrocarbyl group optionally having a substituent, or a trihydrocarbylsilyl group, or R12 and R13 are bonded to represent a hydrocarbylene group optionally having, as a hetero atom, at least one kind atom selected from the atomic group consisting of a silicon atom, a nitrogen atom and an oxygen atom.

Abstract: A method for increasing the wet coefficient of friction of a thermoplastic elastomer includes adding various ingredients to the thermoplastic elastomer. In one embodiment microcrystalline wax, amorphous polyalphaolefin ethylene copolymer, and a copolymer ethylene/propylene and olefins are added to the thermoplastic elastomer. And in another embodiment, microcrystalline wax and copolymer ethylene/propylene and olefins are added to the thermoplastic elastomer. The above compositions are formed into a sheet which can be used alone as a slip-resistant pad, or can be applied to a desired surface (such as that of a surfboard).

Abstract: A manufacturing method of rubber composition for tire tread or the other, which is comprised of adding 30-110 mass parts of silica powders to 100 mass parts of diene rubber component and adding silane coupling agent by 3-15 mass % of the silica powders, comprising: preparing hetero-modified SBR having hetero atom functional group; a first kneader-mixing step, in which 60-85 mass parts of the diene rubber component including no less than 20 mass % of the hetero-modified SBR is mixed in a kneader device with substantially all of the reinforcing fillers; taking out of obtained mixture to give a master batch; and second kneader-mixing step, in which the master batch is mixed substantially solely with remaining mass parts of the diene component.

Abstract: The vulcanizable rubber mixture according to this invention is used for rubber products in particular vehicle tires and vehicle tire treads, but also technical rubber products like belts on conveyor systems, technical hoses, vibration dampers and impact dampers, or wire coatings. All these products benefit from the improved processability that is achieved with the invention in that the mixture comprises a polymer represented by the formula F1-A-F2, or a mixture of F1-A-F2 with an astral or radial coupling product of F1-A-units, coupled by a multivalent coupling agent; wherein F1 represents a terminal functionalization of the polymeric chain, F2 represents a terminal functionalization different from F1; and A represents the polymeric chain of a polymer formed by the copolymerization between one or more conjugated dienes with one or more aromatic vinyl monomers.

Abstract: Disclosed is a slip-resistant rubber composition, which includes a substrate made of rubber, about 0.5 to about 3 parts by weight of a vulcanizer, about 2 to about 5 parts by weight of glass fibers, and about 1 to about 100 parts by weight of an additive, based on 100 parts by weight of the substrate, and has remarkably improved non-slip properties. Also, an outsole using the slip-resistant rubber composition and a method of manufacturing the outsole are provided, in which the outsole which results from subjecting the slip-resistant rubber composition to cutting, arrangement and vulcanization molding and in which one-side ends of the glass fibers are located at the lower surface of the outsole may exhibit remarkably improved non-slip properties so that a user who is wearing shoes having such an outsole is able to walk even on inclined ice.

Abstract: A tire tread-use rubber composition includes from 10 to 50 parts by weight of a tackifying resin having a softening point of from 100° C. to 150° C.; from 70 to 130 parts by weight of a carbon black having a nitrogen specific surface area of from 250 to 400 m2/g; from 1 to 3 parts by weight of sulfur; from 0.5 to 4.0 parts by weight of a sulfenamide vulcanization accelerator; and from 1.5 to 5.0 parts by weight of a thiuram vulcanization accelerator per 100 parts by weight of a rubber component; wherein when A is a compounded amount in parts by weight of the sulfenamide vulcanization accelerator, T is a compounded amount in parts by weight of the thiuram vulcanization accelerator, and S is a compounded amount in parts by weight of the sulfur, a weight ratio (A+T)/S is from 2 to 4.

Abstract: An non-skid coating comprising a two-part epoxy and a filler comprising particles of a thermoset resin provides a durable, low-weight, low-abrasive coating for decks and floors, especially for aircraft carrier flight decks. The coating has the further advantage of having lower heavy metal content than current aluminum-based, non-skid coatings.

Abstract: A stable liquid intermediate comprising a polyol, and/or an acid and/or a catalyst and/or water for the preparation of polymeric compositions, the polyol being polyester polyol, a polyoxpropylene-polyoxypropylene polyol or a mixture thereof. There is disclosed a method of use of said stable liquid intermediate wherein said stable liquid intermediate is mixed with rubber granules.

Abstract: A process for producing conjugated diene rubber and its composite includes polymerizing a conjugated diene or a conjugated diene and a vinyl aromatic hydrocarbon in a hydrocarbon solution by anionic polymerization to obtain conjugated diene rubber containing alkali metal in the polymer chain end reacting a with at least one organic silane compound to become a modified conjugated diene rubber. After or during the modified conjugated diene rubber contacting with large amount of water, solvent and water content are removed from the modified conjugated diene by applicable hot sources, wherein coupling ratio of modified conjugated diene rubber is less than 40%, coupling ratio of modified conjugated diene rubber after contact with water is at least 50% The conjugated diene rubber and composite exhibit storage stability.

Abstract: The rubber composites for tire treads include silica; carbon black; and oil constituents, wherein a ratio (A index) of silica contents, carbon black contents, and oil constituents contents is represented by A index=silica contents/(carbon black contents+silica contents+oil constituents contents)?0.8; and a ratio (B index) of a complex elastic modulus E* at 30° C. and a loss tangent tan ? at 60° C. is represented by B index=E*/tan ??120.

Abstract: An epoxy-based antiskid adhesive having component A and component B, the component A having 1) between 20 and 35 parts of an epoxy resin; 2) between 0.5 and 3 parts of a diluting agent; 3) between 1 and 5 parts of silica; 4) between 20 and 60 parts of quartz sand; 5) between 1 and 6 parts of quartz powder; 6) between 1 and 10 parts of an active calcium; and 7) between 1 and 5 parts of triple superphosphate; and the component B having 1) between 20 and 40 parts of an organic compound-modified amine; 2) between 1 and 5 parts of an accelerator; 3) between 0 and 3 parts of a coupling agent; 4) between 5 and 10 parts of silica; 5) between 20 and 50 parts of quartz sand; 6) between 1 and 10 parts of quartz powder; and 7) between 1 and 10 parts of silica fume.

Abstract: A rubber composition for a pneumatic tire tread for heavy load, comprising a rubber component, and a carbon black, the carbon black satisfies (1) the carbon black has a dibutyl phthalate (DBP) absorption number of 90 to 180 mL/100 g, (2) the difference between the BET specific surface area (BET5) [unit: m2/g] of the carbon black and the external specific surface area (STSA) [unit: m2/g] thereof satisfies the following: 5<BET5?STSA<12, (3) the ratio between the Stokes diameter (Dst) of the carbon black and the Stokes diameter distribution (?D-50 (half band width)) thereof satisfies the following: 0.70<(?D-50)/Dst<1.10, and (4) the ratio between the BET specific surface area (BET5) [unit: m2/g] of the carbon black and the iodine adsorption number (IA) [unit: mg/g] thereof satisfies the following: 1.05<BET5/IA<1.35.

Abstract: A particulate-filled rubber composition contains at least one silane-reactive particulate filler and a mixture of at least one blocked mercaptosilane coupling agent possessing two thioacyl groups and at least one blocked mercaptosilane possessing a single thioacyl group.

Abstract: Rubber mixtures are prepared by using, alongside the other constituents, pyrogenically prepared silicon dioxide in the form of crusts whose tamped bulk density (to DIN EN ISO 787-11) is from 185 to 700 g/l.

Abstract: A manufacturing method of rubber composition for tire tread or the other, which is comprised of adding 30-110 mass parts of silica powders to 100 mass parts of diene rubber component and adding silane coupling agent by 3-15 mass % of the silica powders, comprising: preparing hetero-modified SBR having hetero atom functional group; a first kneader-mixing step, in which 60-85 mass parts of the diene rubber component including no less than 20 mass % of the hetero-modified SBR is mixed in a kneader device with substantially all of the reinforcing fillers; taking out of obtained mixture to give a master batch; and second kneader-mixing step, in which the master batch is mixed substantially solely with remaining mass parts of the diene component.

Abstract: The present invention provides a process for producing a conjugated diene-based polymer comprising polymerizing a monomer component comprising a conjugated diene compound and a silicon-containing vinyl compound using the following compounds (I) and (II), as a polymerization initiator component, (I) an organic alkali metal compound (II) a compound represented by the following formula (I) wherein R11 and R12 represent a hydrocarbyl group having 1 to 20 carbon atoms optionally having a substituent.

Abstract: The present invention provides a process for producing a conjugated diene-based polymer, comprising polymerizing a monomer component containing a conjugated diene compound and a silicon-containing vinyl compound using a polymerization initiator represented by the following formula (1) wherein, R11 represents a hydrocarbylene group having 6 to 100 carbon atoms, R12 and R13 represent a hydrocarbyl group optionally having a substituent, or a trihydrocarbylsilyl group, or R12 and R13 are bonded to represent a hydrocarbylene group optionally having, as a hetero atom, at least one kind atom selected from the atomic group consisting of a silicon atom, a nitrogen atom and an oxygen atom.

Abstract: Radical polymerization techniques can be used to polymerize monomers that include a class of hydroxyaryl compounds so as to provide polymers that exhibit desirable properties including, but not limited to, reduced hysteresis. Compositions such as vulcanizates in which such polymers can be utilized and products such as tire components that incorporate and/or are manufactured from such compositions also are provided.

Abstract: A road marking composition includes by weight, based on the composition total weight: from 5 to 50% of an organic base binder including a resin selected from homopolymers or copolymers derived from vinylic, acrylic or methacrylic monomers, natural or synthetic resins that are soluble in alcohol or in optionally modified oils, especially plant derivative resins, cellulose resins, petroleum resins, polyureas, polyesters and polyethers, except alkyd resins; from 1 to 40% of pigments amongst which from 1 to 100% of the pigment total content is crystallized titanium dioxide in the anatase for; and from 10 to 84% of fillers. A road marking product including the road marking composition and microbeads and/or anti-skid materials is also disclosed.

Abstract: A non-skid coating described herein attempts to overcome the deficiencies of the conventional coatings with improved external durability and color retention, a reduced level of VOCs, and direct-to-metal (DTM) adhesion using organo-siloxane chemistry. The non-skid coating has a first component having an amino-functional siloxane resin; a second component having a non-aromatic epoxy resin; a spherical filler for lowering viscosity; a pigment; a coarse aggregate; and a thixotropic agent. The amino-functional siloxane resin can be an amino-functional methyl phenyl polysiloxane, diphenyl polysiloxane or silsesquioxane-based resin. The non-aromatic epoxy resin can be cycloaliphatic or aliphatic. The first component is about 5% to 20% weight of the coating, and the second component is about 80% to 95% weight of the coating.

Abstract: The present invention relates to a rubber composition comprising a styrene-butadiene copolymer (SBR), a polybutadiene (BR), an unsaturated thermoplastic styrene (TPS) copolymer and a reinforcing filler. The invention also relates to the use of such a composition for the manufacture of a tyre tread that has improved properties in terms of wear resistance, while retaining a very good level of grip on wet ground.

Abstract: Disclosed is a method comprising: (a) mixing in a first mixing step ingredients comprising (i) first polymer, (ii) a low molecular weight polymer having a number average molecular weight of about 5,000 to about 100,000, and (iii) a filler, and (b) mixing in a second mixing step ingredients comprising (i) the mixture obtained in step (a), (ii) a second polymer that is different from said first polymer, and (iii) optionally a filler. In one embodiment, the method further comprises mixing sulfur and vulcanization accelerator(s) into the composition, forming the rubber composition into a sidewall for a tire, and vulcanizing the rubber composition.

Abstract: A macromolecule includes a polymer directly tethered or bonded to a polyatomic functionality. The polyatomic functionality can be located at a terminus of the polymer and can be generated concurrent with or soon after formation of the polymer. The macro-molecule can be prepared from a functionalized polymer by hydrolyzing and condensing (e.g., by a sol-gel process) functionalities in which one or more alkoxy groups are bound to a silica atom in the presence of an excess of a compound that includes a Si, Ti, Zr, Sn, Al, or Fe atom. Such macromolecules can be used in the manufacture of vulcanizates and tire components, either alone or blended with other polymers and/or other particulate fillers.

Abstract: Disclosed is a slip-resistant rubber composition, which includes a substrate made of rubber, about 0.5 to about 3 parts by weight of a vulcanizer, about 2 to about 5 parts by weight of glass fibers, and about 1 to about 100 parts by weight of an additive, based on 100 parts by weight of the substrate, and has remarkably improved non-slip properties. Also, an outsole using the slip-resistant rubber composition and a method of manufacturing the outsole are provided, in which the outsole which results from subjecting the slip-resistant rubber composition to cutting, arrangement and vulcanization molding and in which one-side ends of the glass fibers are located at the lower surface of the outsole may exhibit remarkably improved non-slip properties so that a user who is wearing shoes having such an outsole is able to walk even on inclined ice.

Abstract: A composition comprising a base and curing agent that when mixed, applied to a substrate and cured, comprise a thick non-skid coating having a plow field texture with an aggressive profile and with exceptional mechanical properties which are maintained after exposure to high heat conditions.

Abstract: A novel process is used to prepare synthetic rubbers (B) which feature very narrow molecular weight distribution and a correspondingly low value for the polydispersity index. The preparation process encompasses the treatment of a synthetic rubber with ultrasound, where the resultant synthetic rubber (B) has a lower weight-average molecular weight (Mw) than the synthetic rubber (A) used. The resultant synthetic rubbers (B) have excellent suitability for processing via extruder processes or injection-molding processes.

Abstract: The present invention has its object to provide a rubber composition for a tread which can prevent reversion and can also achieve environmental performance (excellent rolling resistance, response to depletion of oil resources, attention to CO2 emission), wet grip performance, dry grip performance, handling stability, and durability (abrasion resistance, crack resistance) in a well-balanced manner. The present invention also aims to provide a pneumatic tire using the rubber composition for the tread thereof. The rubber composition for a tread includes a rubber component containing 35% by mass or more of an epoxidized natural rubber; and a white filler, wherein a total sulfur content is less than 1.75% by mass, and a crosslink density is 7.0×10?5 mol/cm3 or more.

Abstract: Disclosed is a rubber composition which comprises: (a) a first polymer, (b) a second polymer that is different from said first polymer, (c) a filler, (d) a first low molecular weight polymer comprising a block A and a block B, wherein said block A comprises a majority of the same type of mer units that make up a majority of the first polymer and block B comprises a majority of the same type of mer units that make up a majority of the second polymer, and (e) a second low molecular weight polymer comprising at least one functional group, wherein said first and second low molecular weight polymers have number average molecular weights of about 5,000 to about 100,000. Also disclosed is a method of mixing the rubber composition.

Abstract: A rubber composition is provided for coating a steel wire material having initial adhesion strength and water resistant adhesion strength with respect to a steel wire material at or above conventional levels, the rubber composition being compounded with a compound derived from a natural product. Specifically a rubber composition for coating a steel wire material is compounded with from 0.05 to 10 parts by weight of a salt compound per 100 parts by weight of a diene rubber, the salt compound including a dicarboxylic acid derived from a natural product and an amine of a decarboxylated amino acid derived from a natural product.

Abstract: A method of decreasing the roiling resistance of a tire formed from a sulfur-vulcanized elastomeric by combining at least one diene elastomer and at least one reinforcing filler, with an effective amount of a coupling agent consisting of a combination of: 10 to 90%, of a product (I) consisting of a blend of poly(alkylphenol) polysulfides of formula: in which: R is an alkyl radical containing 1 to 20 carbon atoms; n and n? are two integers, which may be identical or different, from 1 to 8; p is an integer from 0 to 50; and 10 to 90% of a product (II) consisting of bis(triethoxysilylpropyl)tetrasulfide, to form a mixture; thereafter working said mixture; and thereafter heating said mixture to vulcanize said mixture. 90% of bis(triethoxysilylpropyl)tetrasulfide.

Abstract: The invention relates to functionalized carbon black-filled rubbers, to the production of such rubber mixtures and to their use in producing vulcanized rubbers that are especially used for producing highly reinforced molded rubber products, especially for producing tires that have an especially low rolling resistance, especially good non-skid properties on wet surfaces and a good abrasion resistance.

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.