Abstract: It has been discovered that certain monofunctional thiuram compounds can be synthesized at low cost and utilized as vulcanization accelerators which provide excellent cure rates without causing a high level of scorch. The use of these monofunctional thiuram compounds as vulcanization accelerators also result in cured rubber compositions that exhibit reduced compression set, improved age hardening characteristics, and degradation resistant crosslinks. These monofunctional thiuram compounds are of the structural formula: wherein R1 and R2 can be the same or different and represent organyl radicals, wherein R1 and R2 contain a total of at least 8 carbon atoms, and wherein R1 and R2 can join together to form a cyclic structure, and wherein R3 represents an organyl radical containing at least 6 carbon atoms.

Abstract: Briefly described, and according to one embodiment, aspects of the present disclosure generally relate to natural rubber and functional silica compositions for tire manufacturing and methods for forming the same. In at least one embodiment, the disclosed composition is a renewable elastomeric polymeric composition for rubber compounding applications, such as low rolling resistance tire tread and winter tire tread applications. The disclosed composition may also reduce fuel consumption and, thus, carbon dioxide emissions in gas-powered vehicles, and increase driving range in electric vehicles, because the disclosed composition is more energy efficient than current tire material compositions. In various embodiments, the disclosed composition may be formed by blending water-soluble silsesquioxane oligomers into a natural rubber latex system, followed by in-situ formation of a continuous, molecular silica network within the resulting polymer.

Abstract: This silicone composition contains (A) an organopolysiloxane which has at least two aliphatic unsaturated hydrocarbon groups per molecule and has a kinematic viscosity at 25° C. of 60-100,000 mm2/s, (B) an organohydrogenpolysiloxane represented by general formula (I) (R1 is an alkyl group having 1-6 carbon atoms, R2 is R1 or a hydrogen atom, n is an integer between 2 and 40, m is an integer between 0 and 98, and the value of n+m is such that 5?n+m?100), (C) a flaky graphite powder having an average thickness of 100 nm or less, (D) a thermally conductive filler having a thermal conductivity of 10 W/m·° C. or more, (E) a platinum group metal catalyst and (G) a slightly volatile isoparaffin compound which has a boiling point of 160-360° C. and which can disperse or dissolve the component (A) and the component (B). This silicone composition can give a silicone grease having a higher thermal conductivity and better handleability than conventional silicone greases.

Abstract: The present invention relates to a water-soluble polymer obtained by polymerization of at least a 2-dimethylaminoethyl acrylate monomer and/or its salts, in presence of at least a tocopherol and/or its derivatives, or a tocotrienol and/or its derivatives, and its uses.

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: This invention is based upon the unexpected discovery that silica containing tire tread rubber performance characteristics, such as hysteresis and payne effect, can be significantly improved using low levels of coupling agents and increasing silanization times and temperatures. The rubbers formulations made in accordance with this finding are of particular value for use in the treads of winter tires. Such rubber formulations will typically be made using a maximum level of about 7 phf of silica coupling agent and will more typically contain 3 phf to 6 phf of the silica coupling. A silanization time of at least 4 minutes or 5 minutes (within the range of 4 to 10 minutes) at a temperature of at least 150° C. and preferably 160° C. (within the range of 150° C. to 180° C.) will also be used.

Abstract: The present disclosure provides a method of preparing a vinyl chloride-based polymer, and the method provides excellent productivity while having reduced amount of a volatile organic compound generated so as to provide the vinyl chloride-based polymer suitable for an eco-friendly material, and improved foaming and viscosity properties of a plastisol including the prepared polymer, by adding a carbonate-based metal salt and a transition metal catalyst together, and controlling input time and amount of the transition metal catalyst.

Abstract: Crumb rubber obtained from recycled tires is subjected to an interlinked substitution process. The process utilizes a reactive component that interferes with sulfur bonds. The resulting treated rubber exhibits properties similar to those of the virgin composite rubber structure prior to being granulated, and is suitable for use in fabricating new tires, engineered rubber articles, and asphalt rubber for use in waterproofing and paving applications.

Abstract: Non-ASTM low hysteresis carbon blacks chemically treated, and surface coated with a compound comprising at least one amine group and at least one thiol group, and/or di- and/or polysulfidic linkage. When compared with a standard ASTM grade compound, the disclosed surface modified low hysteresis carbon black compound shows improved rolling resistance, wet traction, and DIN abrasion, comparable to silica compounds.

Abstract: Disclosed is a method of producing a fabric product, the method comprising preparing an upper; preparing a lining fabric; layering a thermoplastic hot-melt film between the upper and the lining fabric for bonding the upper and the lining fabric; bonding a lining fabric to the upper, wherein the thermoplastic hot-melt film consists of the composition selected from the group consisting of thermoplastic polyurethane, ethylene vinyl acetate, polyamide and polyester compositions, wherein the thermoplastic hot-melt film further contains nanosilica, wherein a content of the nanosilica is 0.1 to 5.0 Parts per Hundred Resin (phr) and a size of the nanosilica is less than 100 nm.

Abstract: The introduction of graphene as an additive in rubber compounds is disclosed. The product shows increased barrier protection for tire innerliners, with no tradeoffs in other characteristics.

Abstract: The invention relates to a sulfur-crosslinkable rubber mixture, a vulcanizate and a vehicle tire. The sulfur-crosslinkable rubber mixture contains at least the following constituents: at least one diene rubber and at least one silica and at least one silane having the general empirical formula [(R1)oSi—(R3—)pX—(R4—)p]mSn(R2)2-m,??I) where X is a radical comprising at least one polar group selected from urethane, amide, ester, amine, thiourea, thioamide, O-organyl thiocarbamate, S-organyl thiocarbamate, amidine, guanidine, piperidine, maleic anhydride, sulfonamide, carbonate, imidazoline, thiazolidine, thiazolidinone, pyrrolidine, pyrazole, benzimidazole, indole, purine, thiazine, sulfonate, and phosphonate groups.

Abstract: According to the rubber composition for a tire tread comprising a diene-based rubber component, and, based on 100 parts by mass of the diene-based rubber component, 0.5 to 6.0 parts by mass of a branched alkane of 40 to 70 carbon atoms, 0.05 to 3.5 parts by mass of a linear alkane of 45 or more carbon atoms and 1 to 35 parts by mass of aluminum hydroxide, and a tire comprising tread composed of the rubber composition for a tire tread of the present invention, a rubber composition for a tire tread capable of improving initial wet grip performance can be provided, thereby providing a tire having such improved initial wet grip performance.

Abstract: A rubber compound for the production of tire portions comprising a polymer base with a cross-linkable unsaturated chain, a filler system and a vulcanization system. The filler system comprises (a) a quantity, greater than or equal to 25 phr, of a first carbon black having a surface area smaller than or equal to 170 m2/gr; (b) a second carbon black having a surface area greater than or equal to 300 m2/gr in a quantity that is such that the ratio between the quantity of said first carbon black and the quantity of said second carbon black is greater than or equal to 5 and smaller than or equal to 13; (c) a quantity ranging between 0.5 and 2.0 phr of a dispersant agent comprised in the class of aromatic amides and having an unsaturation suited to interact with the polymer base with a cross-linkable unsaturated chain.

Abstract: Modified asphalt compositions and methods of making same. The modified asphalt compositions include asphalt, a crosslinkable polymer, and a dialkyl polysulfide. The methods of making the compositions include blending a mixture of asphalt, a crosslinking polymer, and a dialkyl polysulfide, such as at a temperature of about 100-300° C.

Abstract: This application relates to natural rubber (NR) composites, and more specifically to a method of preparing a graphene/natural rubber composite. In the method provided herein, nano-silica loaded graphene oxide (SiO2-GO) is formed by electrostatic interaction between silica and graphene oxide (GO), and then the SiO2-GO is added to natural rubber (NR) latex to obtain a SiO2-GO/NR masterbatch by aqueous phase synergistic aggregation-precipitation process. The SiO2-GO/NR masterbatch is subjected to mechanical blending and vulcanization to obtain the graphene/NR composite.

Abstract: Pavement aging can be reduced by applying to an asphalt-containing pavement a topcoat layer or a surface treatment containing asphalt binder emulsion with sterols.

Abstract: In one aspect, a single layer polymer film includes 25 to 97.5 wt % of a polyimide having a refractive index of 1.74 or less, 0.5 to 20 wt % of a matting agent and 1 to 30 wt % of a black colorant. On an air side, the single layer polymer film has an L* color of 33 or less and a 60° gloss of 10 or less. In another aspect, a single layer polymer film includes 80 to 99 wt % of a polyimide having a refractive index of 1.74 or less and 1 to 30 wt % of a black colorant. A surface of the single layer polymer film has been textured and has a maximum roughness (Spv) of 7 ?m or more, an L* of 33 or less and a 60° gloss of 10 or less.

Abstract: Provided is a method for preparing a modified filler. The method includes in sequence providing an acidified aqueous slurry of an untreated inorganic filler which has not been previously dried; an emulsifier material; and a hydrophobating agent having the following structural formula (I): Ra?M-X(4?a)??(I) wherein: R is C6 to C22 alkyl, M is silicon, titanium or zirconium, X is OR? or halogen, R? is C1 to C4 alkyl, and a is 1; washing and/or filtering the acidified aqueous slurry to obtain a modified filler; and, optionally, drying the modified filler. Polymeric compositions and articles also are provided.

Abstract: A pelletized road marking composition includes a binder mixture, a filler mixture and bentonite clay. The binder mixture includes at least one alkyd ester, at least one wax, at least one ethylene copolymer, and at least one plasticizer. The filler mixture includes at least one coloring additive, reflective elements, and at least one inert inorganic filler. The components of the road marking composition are mixed and melted and processed into pellets. The bentonite clay added to the composition prevents the pellets from clumping when stored at elevated temperatures.