Abstract: The invention relates to a method for the production of a tire sealant (C) with a polymeric base. A highly viscous first sealant component (A) (including a natural rubber component that is undiluted or diluted with at least one additional natural rubber component and mixture ingredients that are free of a solvent and an activator) is mixed with at least one second sealant component (B) (comprising a separately produced medium with low viscosity containing at least one activator), to combine to the tire sealant (C), wherein a cross linking occurs associated with the subsequent application of the tire sealant (C) to the inside of the tire. Appropriate method steps are disclosed.

Abstract: A process for modifying natural rubber and modified natural rubber with improved processing performance. The process for modifying natural rubber includes at least the following process steps: comminuting the natural rubber in a first process step; blending and purifying the natural rubber in a second process step; further comminuting the natural rubber in a third process step; and, drying the natural rubber in a fourth process step. The modified natural rubber is modified by at least four process steps.

Abstract: Processes for recovering natural rubber from an aqueous natural rubber latex that contains extractables and one or more additives and that is essentially free of lignocellulosic plant material are described. Natural rubber in the latex is separated from the water. Preferably, the amount of non-rubber extractables in the natural rubber is reduced by one or more extraction steps yielding a dried natural rubber.

Abstract: This invention relates to a rubber composition capable of improving a steering stability on a wet road and a low fuel consumption of a tire, and more particularly to a rubber composition comprising 5 to 60 parts by mass of a low-molecular weight aromatic vinyl compound-conjugated diene compound copolymer (B) having an aromatic vinyl compound content of 5 to 80% by mass, a vinyl bond content in a conjugated diene compound portion of 10 to 80% by mass and a weight average molecular weight as measured through a gel permeation chromatography and converted to polystyrene of 5,000 to 200,000 and 20 to 90 parts by mass of a filler (C) based on 100 parts by mass of a rubber component (A) composed of at least one of natural rubber and synthetic diene-based rubbers, in which 50 to 90% by mass of the filler (C) is silica.

Abstract: The invention relates to a water based rubber cement and tire with fabricated tread where the tire tread is fabricated by joining ends of an uncured rubber strip containing a high content of hydrophobated precipitated silica content with a water based cement containing a diene-based elastomer and a component reactive with said diene based elastomer and with residual hydroxyl groups on said hydrophobated precipitated silica contained in said uncured rubber strip.

Abstract: Method for the production of an initial rubber composition, in the course of which the following steps are carried out in succession: A—a rubber matrix, reinforcing fillers, and other components if required, with the exception of the cross-linking system, are introduced into a mixing means of the internal mixer type, comprising a mixing chamber in which there are mounted rotors which are driven in rotation and have radial projections forming a gap (e) between themselves and the vessel, B—said components are mixed in the chamber until a uniform mixture is obtained, care being taken to ensure that the temperature of the mixture remains at or below 170° C., after which C—the rotation speed of the rotors is adjusted so as to bring the rubber composition to a dropping temperature in the range from 180° C. to 240° C.

Abstract: A 1,2,4-triazine of formula (I): and its process of manufacture and use.

Abstract: Polymer-filler coupling compounds with the formula B-A-Sx—N are claimed. In these compounds, B is an azaheterocyclic oxygen or sulfur containing moiety, or an allyltin moiety; Sx is a polysulfide, where x is between 2 and about 10; A is a linking atom or group that forms a bridge between B and Sx; and N is a blocking group. Sx can be a disulfide. N can be a conventional blocking group or other group such as -A-B. Methods for using the polymer-filler coupling compounds to modify polymers containing unsaturated carbon-carbon bonds and promote filler dispersion are also claimed. Additionally, vulcanizable rubber compositions containing the polymer-filler coupling compounds and methods for making vulcanized rubber compositions using the polymer-filler coupling compounds are also claimed.

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: In order to provide a tire which is excellent in processability and which is excellent as well in a low fuel consumption, abrasion resistance and fracture resistance, assumed is such a constitution that used for a tire member is a rubber composition which contains a modified natural rubber having a polar group in the rubber molecule and precipitated silica, wherein a cetyltrimethylammonium bromide-adsorbing specific surface area (CTAB) (m2/g) of the precipitated silica and the mode Aac in diameters (nm) of primary aggregates thereof determined by acoustic measurement of particle size distribution satisfy an equation: Aac??0.76×(CTAB)+274.

Abstract: A rubber composition for the manufacture of tires, based on one or more diene elastomers, on one or more reinforcing fillers and on a vulcanization system, characterized in that the said vulcanization system comprises one or more 1,2,4-triazine compounds of formula:

Abstract: This invention relates to a rubber composition comprised of diene-based elastomer, precipitated silica and nano-scale exfoliated graphene platelets. A tire is provided having a component comprised of such rubber composition.

Abstract: This invention provides a natural solvent-based adhesive composition for tires; a mix to prepare adhesive compositions; a preactivation compound for tires; processes to obtain said compositions or mix; or the use of said compounds in bonding tires; and bonding and preactivation processes for tires. The objects of the invention provide industrial solutions that, while introducing a considerable reduction in environmental impact in their preparation and use, provide better health conditions for the professionals who work in the tire bonding industry.

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: The present invention provides a rubber composition capable of improving the rubber strength and fuel economy in a balanced manner, and a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition including a rubber component, carbon black, and a compound represented by formula (I) below, wherein the amount of the carbon black is 10 to 100 parts by mass per 100 parts by mass of the rubber component: wherein R1 and R2 are the same as or different from each other, and each represent a hydrogen atom, a C1-C20 alkyl group, a C1-C20 alkenyl group, or a C1-C20 alkynyl group; Mr+ represents a metal ion; and r represents a valence of the metal ion.

Abstract: The invention relates to a method of bonding particles to the surface of an elastomer, in particular a glove, the surface of the elastomer being at least partially epoxidized, and the particles are covalently bonded to the epoxide groups after epoxidation of the elastomer surface.

Abstract: A compound for protection of an object from a blast or shock wave. The compound include a matrix material and at least a first and second sets of inclusions in the matrix material that differ in size, quantity, shape and/or composition in a direction through the impact-absorbing material, the combination of which contributes to the ability of the material to exhibit at least one property that changes as the inclusions are deformed in response to a blast or shock wave.

Abstract: The invention aims to provide a rubber composition for a tire which achieves a balanced improvement in the abrasion resistance under both low and high severity abrasion conditions, low heat build-up properties, and chipping resistance. The invention relates to a rubber composition for a tire, including: a rubber component containing 60% by mass or more of a natural rubber component; and a carbon black having a cetyltrimethylammonium bromide (CTAB) specific surface area of 140-160 m2/g, a ratio (CTAB/IA) of the cetyltrimethylammonium bromide specific surface area to an iodine adsorption number (IA) of 0.85-1 m2/g, and a ratio (?D50/Dst) of a half width (?D50) of Stokes' diameter distribution of aggregates to a Stokes' diameter (Dst) of aggregates, as determined by a centrifugal sedimentation method, of 0.9-0.99, the natural rubber component containing 20% by mass or more of highly purified natural rubber per 100% by mass of the natural rubber component.

Abstract: A method of producing an elastomer composite. The method includes A) combining a first fluid comprising elastomer latex with a second fluid comprising particulate filler; B) causing the elastomer latex to coagulate, thereby forming masterbatch crumb; C) bringing the masterbatch crumb to a water content of about 1 weight percent to about 20 weight percent, thereby forming a dewatered coagulum; D) removing water from the dewatered coagulum by subjecting the dewatered coagulum to mechanical energy, thereby causing the dewatered coagulum to heat as a result of friction, while allowing the dewatered coagulum to achieve a temperature of about 130° C. to about 190° C., wherein water content is reduced to about 0.5% to about 3% and wherein substantially all of the decrease in water content is accomplished by evaporation, thereby producing a masticated masterbatch; and E) subjecting the masticated masterbatch to at least an additional 0.3 MJ/kg of mechanical energy while further reducing the water content.

Abstract: Accordingly, the invention provides a process for the preparation of an artificial latex, comprising the steps: (a) emulsification of a cement comprising a rubber dissolved in a suitable organic solvent, together with an aqueous surfactant solution, thus forming an oil-in-water emulsion; (b) step-wise reduction of the solvent content of the oil-in-water emulsion in two or more stages resulting in an artificial latex. In addition, the invention provides a continuous stirred vessel for removing an organic solvent from an oil-in-water emulsion comprising rubber dissolved in an organic solvent.

Abstract: It is the purpose of the present invention to improve air permeation resistance, low heat build-up property and strength at break. The present invention provides a rubber composition for an inner liner including (B) specific mica, (C) carbon black and/or silica and (D) an alkylphenol-sulfur chloride condensate indicated by the formula (D1): (Wherein R1 to R3 are an alkyl group having 5 to 12 carbons; x and y are an integer of 2 to 4; and n is an integer of 0 to 10), based on (A) specific rubber component.

Abstract: The invention relates to a process for the preparation of a masterbatch in the liquid phase based on one or more diene elastomer latexes and on one or more fillers, comprising the following successive stages: preparation of a stable and homogeneous aqueous dispersion by mixing one or more diene elastomer latexes with one or more stable aqueous dispersions of one or more fillers, the said fillers; homogenization of the aqueous dispersion, coagulation within the aqueous dispersion of the said diene elastomer latex or latexes with the filler or fillers by supplying mechanical energy, recovery of the coagulum, drying the recovered coagulum in order to obtain the masterbatch.

Abstract: A rubber composition comprises a rubber component, sulfur and a sulfeneamide base vulcanization accelerator represented by the following Formula (I), and has an excellent adhesive property with metal such as a steel cord without bringing about problems such as deteriorating in the physical properties and blooming of rubber after vulcanization. (wherein R1 represents a branched alkyl group having 3 to 12 carbon atoms; R2 represents a linear alkyl group having 1 to 10 carbon atoms or a branched alkyl group having 3 to 10 carbon atoms; x represents an integer of 1 or 2, and n represents an integer of 0 or 1).

Abstract: A rubber-based pressure-sensitive adhesive composition comprising a rubbery polymer, and a natural rubber having a weight-average molecular weight of from 100,000 to 400,000, wherein the amount of the natural rubber is 5 parts by weight or more and less than 100 parts by weight, based on 100 parts by weight of the rubbery polymer.

Abstract: The invention relates to a rubber composition based on at least one diene elastomer, a reinforcing filler comprising at least carbon black and an inorganic filler with an inorganic filler content of less than or equal to 50 parts by weight per hundred parts of elastomer, characterized in that the composition is obtained from a first masterbatch comprising at least one first diene elastomer and carbon black, and having a dispersion of the carbon black in the elastomeric matrix that has a Z value of greater than or equal to 90, added to which is the inorganic filler and at least one second elastomer, identical to or different from the first elastomer, and also to the process for preparing such a composition.

Abstract: The present invention provides a rubber composition that can enhance the fuel economy, wet-grip performance, abrasion resistance, and processability in a balanced manner, and also provides a pneumatic tire using this rubber composition. The present invention relates to a rubber composition that contains a rubber component, silica, and a compound represented by formula (1) below, wherein the rubber component contains, based on 100% by mass of the rubber component, not less than 5% by mass of a conjugated diene polymer containing a constituent unit based on a conjugated diene and a constituent unit represented by formula (I) below, at least one terminal of the polymer being modified with a specific compound; and an amount of the silica is 5 to 150 parts by mass per 100 parts by mass of the rubber component.

Abstract: The invention relates to a rubber composition based on at least one diene elastomer, a filler comprising at least carbon black and an inorganic filler with an inorganic filler content of less than or equal to 50 parts by weight per hundred parts of elastomer, phr, and also a crosslinking system, characterized in that the dispersion of the filler in the elastomeric matrix has a Z value of greater than or equal to 80; and also to the process for preparing such a composition.

Abstract: The natural rubber of the present invention is natural rubber obtained by leaving standing for a prescribed period of time a hydrous coagulum obtained from a natural rubber latex to which a preservative is added and/or from a coagulum of a natural rubber latex to which a preservative is added and drying it. The natural rubber coagulum is inhibited from being changed in a molecular weight even in a standing step (aging) in a high moisture condition, whereby the natural rubber having stable mechanical properties is obtained. An isothiazoline base compound is used for the preservative. Further, a rubber composition containing the natural rubber is prepared, and a tire is produced by using the rubber composition.

Abstract: Rubber formulations comprising a base rubber composition, graphenic carbon particles, and non-conductive filler particles such as silica are disclosed. The formulations possess favorable properties such as relatively low surface resistivities, and are useful for many applications such as tire treads.

Abstract: A method of producing rubber mixes, including a step of mixing a reinforcing filler, having a surface area of over 220 m2/g and a particle size of less than 0.1 ?m, with a cross-linkable, unsaturated-chain polymer base. The mixing step is performed in the aqueous phase, in the presence of a surface-active agent of molecular formula (I) (R1CONR2CHR3COO?)nXn+ (I) where: R1 is an aliphatic group C4-C20 R2 is H or an aliphatic group C1-C8 R3 is H or an aliphatic or aromatic group C1-C8 X is a metal cation n is an integer of 1 to 3.

Abstract: A process for producing an unvulcanized rubber composition comprising a rubber wet master batch yielded by using, as raw materials, at least a filler, a dispersing solvent and a rubber latex solution, the rubber latex solution comprising two or more rubber latex solution species different from each other, and the process comprising a step (I) of dispersing the filler into the dispersing solvent to produce a filler-containing slurry solution, a step (II) of mixing the filler-containing slurry solution with the rubber latex solution to produce a filler-containing rubber latex solution, and a step (III) of coagulating and drying the filler-containing rubber latex solution to produce the rubber wet master batch.

Abstract: A rubber blend, particularly for pneumatic vehicle tires, harnesses, straps and hoses. The rubber blend has the following composition: at least one polar or nonpolar rubber, at least one light and/or dark filler, at least one plasticizer which is free from polycyclic aromatic compounds and which has been produced based on waste materials containing carbon that result from the production of tires and additional technical rubber articles, as well as further additives.

Abstract: It is an object of the present invention to provide a rubber composition for a tread which can improve both performance on ice and abrasion resistance and a studless winter tire having a tread formed by this rubber composition. The present invention provides a rubber composition for a tread comprising 0.1 to 7.0 parts by mass of nanodiamond based on 100 parts by mass of a rubber component comprising at least one selected from a group consisting of a natural rubber, an isoprene rubber, a styrene butadiene rubber and a butadiene rubber, and a pneumatic tire having a tread formed by this rubber composition.

Abstract: The present invention relates to a method for producing a rubber composition containing a rubber component (A) of at least one selected from natural rubbers and synthetic dienic rubbers, a filler containing an inorganic filler (B), a silane coupling agent (C) and a vulcanization promoter (D), wherein the rubber composition is kneaded in multiple stages, and in the first stage of kneading, the rubber component (A), all or a part of the inorganic filler (B), and all or a part of the silane coupling agent (C) are kneaded, and then on the way of the first stage, the vulcanization promoter (D) is added and further kneaded. 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: 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: The present invention includes compositions of matter, methods of making and using a sealable container using a design control water based adhesive composition for application using a printing press by providing a substrate comprising a first side and a second side each having a top edge, a bottom edge, a right edge, a left edge and a storage region positioned there between; applying a first composition to the top edge, the bottom edge, the right edge, the left edge; applying at least a second composition to the first composition; and placing a cover on the at least a second composition to be sealed by the second composition and the first composition.

Abstract: A rubber composition usable as tread for a winter tire, having a high grip on melting ice, comprising at least one diene elastomer such as natural rubber and/or a polybutadiene, more than 30 phr of a liquid plasticizing agent, between 50 and 150 phr of a reinforcing filler such as silica and/or carbon black, and between 5 and 40 phr of magnesium sulphate microparticles.

Abstract: An elastomeric compositions having improved impermeability is disclosed. The cured elastomeric composition may comprise at least one C4-C7 monoolefin elastomer, a hydrocarbon polymer additive, and a clay. In some embodiments, the cured elastomeric composition has a permeation coefficient at 40° C. of 90 cc*mm/(m2-day) or less. In some embodiments, the elastomeric composition is substantially free of naphthenic oil.

Abstract: A tire puncture sealant is disclosed and described. Such a sealant may include a natural rubber latex and a surfactant, wherein a content of the surfactant is from 1.0 to 6.0 mass % of a solid content of the natural rubber latex and the surfactant includes a non-ionic surfactant and an anionic surfactant at a mass ratio where the non-ionic surfactant/the anionic surfactant=1.0/1.0 to 1.0/5.0.

Abstract: Compositions comprising graphene sheets. at least one reinforcing agent, and at least one rubber. The compositions may further comprise carbon black. The compositions may be formed into articles including tire components.

Abstract: The invention relates to sulfur silane coupling agents containing multiple blocked mercapto groups which are in a state of reduced activity until activated. The coupling agents are advantageously used in rubber formulations, for example, for fabricating tires with low rolling resistance.

Abstract: The present invention provides a rubber composition for a clinch apex which improves in fuel economy, flex crack growth resistance, and processability in a balanced manner, and also provides a pneumatic tire produced using the rubber composition. The present invention relates to a rubber composition for a clinch apex, including: a modified natural rubber having a phosphorus content of 200 ppm or less; and at least one of carbon black and a white filler.

Abstract: A rubber composition comprising 0.3 to 10 parts by mass of sulfur and 0.1 to 10 parts by mass of a sulfeneamide base vulcanization accelerator represented by the following Formula (I) based on 100 parts by mass of a rubber component: (wherein R1 to R10 are a hydrogen atom, a linear alkyl group having 1 to 4 carbon atoms or a branched alkyl group having 3 to 4 carbon atoms, and they may be the same or different; R11 is a hydrogen atom, a linear alkyl group having 1 to 10 carbon atoms or a branched alkyl group having 3 to 10 carbon atoms; R12 to R15 are a hydrogen atom, a linear alkyl group or alkoxy group having 1 to 4 carbon atoms or a branched alkyl group or alkoxy group having 3 to 4 carbon atoms, and they may be the same or different; and x represents an integer of 1 or 2).

Abstract: A rubber composition for the manufacture of tires, based on one or more diene elastomers, on one or more reinforcing fillers and on a vulcanization system, the vulcanization system comprising one or more thiazole compounds of formula:

Abstract: A rubber composition for the manufacture of tires, based on one or more diene elastomers, on one or more reinforcing fillers and on a vulcanization system, characterized in that the said vulcanization system comprises one or more thiadiazole compounds of formula:

Abstract: A rubber composition for the manufacture of tires, based on one or more diene elastomers, on one or more reinforcing fillers and on a vulcanization system, characterized in that the said vulcanization system comprises one or more 1,2,4-triazine compounds of formula:

Abstract: The present invention provides an apparatus for processing a rubber. The apparatus is equipped with an enclosed kneading chamber; a charging port for charging a material into the kneading chamber; a stirring rotor for stirring the material in the kneading chamber; a control section for automatically controlling the rotational speed of the stirring rotor; and a temperature sensor for detecting an interior temperature of the kneading chamber and outputting the detected information regarding the interior temperature to the control section. The control section automatically controls the rotational speed by a PID control configured to attempt to match the actual temperature with the target temperature until expiration of a control time being set in a state where the material containing a rubber component exists in the kneading chamber, based on the information regarding the actual temperature and information regarding a target temperature being set.

Abstract: This invention provides a natural solvent-based adhesive composition for tires; a mix to prepare adhesive compositions; a preactivation compound for tires; processes to obtain said compositions or mix; or the use of said compounds in bonding tires; and bonding and preactivation processes for tires. The objects of the invention provide industrial solutions that, while introducing a considerable reduction in environmental impact in their preparation and use, provide better health conditions for the professionals who work in the tire bonding industry.

Abstract: The invention provides a rubber composition for studless tire achieving well-balanced abrasion resistance, performance on ice and snow, handling stability, and wet grip performance; and a studless tire including a tread produced from the composition. The composition contains: a rubber component; aromatic oil; silica; carbon black; and a mixture of a zinc salt of aliphatic carboxylic acid and a zinc salt of aromatic carboxylic acid, wherein the total of NR and BR in 100% by mass of the rubber component is 30% by mass or more, the amount of aromatic oil is 12-85 parts by mass, the amount of silica is 12-85 parts by mass, and the amount of mixture is 1 part by mass or more, per 100 parts by mass of the rubber component, and the proportion of silica is 45% by mass or more per 100% by mass of the total of the silica and carbon black.

Abstract: A rubber latex composition is disclosed having reduced allergenicity. Methods for producing a rubber latex composition having reduced allergenicity are also disclosed.