Abstract: The present invention provides: a cationic natural rubber latex comprising cationic natural rubber microparticles in which the surfaces of natural rubber microparticles are coated by a cationic polymer, a weight average molecular weight of the cationic polymer being from 3000 to 150000, a concentration of the cationic natural rubber being from 30 to 70% by mass, a viscosity at 20° C. being 500 mPa·s or less, and surface potential of the cationic natural rubber microparticles being ?3 mV or less; and a tire puncture sealant comprising the cationic natural rubber latex and an acidic resin emulsion, a mass ratio of a solid content of the cationic natural rubber latex to a solid content of the acidic resin emulsion being from 90:10 to 10:90. Such tire puncture sealant has superior puncture-sealing ability, storage stability, and workability.

Abstract: An object of the present invention is to provide an emulsion coagulant which can be used to quickly coagulate a tire puncture sealing material in an extremely low temperature environment. The emulsion coagulant of the present invention is an emulsion coagulant comprising: component (A) having a particle size of from 35 to 100 ?m and comprising at least one type selected from the group consisting of aluminum oxide, magnesium oxide, and silicon oxide; propylene glycol alginate; and component (B) comprising at least one type selected from the group consisting of calcium oxide, calcium chloride, calcium acetate, and urea; the amount of component (B) being from 3 to 30 mass % of the total amount of component (A), propylene glycol alginate, and component (B); and the emulsion coagulant being used to coagulate a tire puncture sealing material comprising an emulsion.

Abstract: An object of the present invention is to provide a novel emulsion coagulant having excellent coagulability used in a tire puncture sealing agent, and a tire puncture repair kit that uses the same. The present invention is an emulsion coagulant comprising magnesium oxide and a silane coupling agent and a cellulose and/or magnesium hydroxide, wherein a mass ratio of the magnesium oxide to the silane coupling agent is from 100:0.5 to 100:15; and a tire puncture repair kit that uses the same.

Abstract: The present invention is to provide a water-based primer composition that exhibits excellent adhesion toward an adherend such as mortar. This water-based primer composition contains a high molecular weight emulsion (A) which is an emulsion of a resin having a weight average molecular weight of 200,000 or higher, and a low molecular weight emulsion (B) which is an emulsion of a resin having a weight average molecular weight of 100,000 or lower, wherein an average particle diameter of the resin of the low molecular weight emulsion (B) is 0.6 ?m or less.

Abstract: Provided is a modified diene based polymer in which a diene based polymer is graft modified with a polyether having a mercapto group attached via diurethane bonding. Formation of diurethane bonding is performed by allowing sequential reactions of two species of hydroxyl group-containing compounds with an diisocyanate compound. By adding the modified diene based polymer to a silica-containing rubber composition for automobile pneumatic tires, the dispersibility of silica compounded in the rubber composition can be improved, and a property inherent in silica which simultaneously allows a reduction of rolling resistance and a stability on wet road surfaces can be sufficiently effected.

Abstract: Provided are a method and a kit for recovering puncture repair liquid, which have made it possible to easily and quickly dispose of spent puncture repair liquid. The method for recovering puncture repair liquid according to the present invention uses a kit for recovering the puncture repair liquid which is provided with a coagulant for coagulating the puncture repair liquid and a flexible bag containing the puncture repair liquid, and includes injecting the puncture repair liquid drawn from the inside of a tire into the bag, mixing the puncture repair liquid and the coagulant in the bag, and recovering the puncture repair liquid in a coagulated state.

Abstract: A method and device for recovering puncture repair liquid without cutting out a tire valve. The method uses a device including a tube and either a pipe member or a drainage device. The tube reaches a tire inner surface when inserted into the tire from a tire valve mounted to a wheel, and the pipe member or drainage device connects between the tire valve and a pressurized air source. A valve core is detached from a tire valve of the wheel. The tube is inserted into the tire via the valve, the pipe member or drainage device is connected between the valve and air source, the tire is filled with air from the air source, and the puncture repair liquid in the tire is recovered through an end portion of the pipe member or drainage port due to air escaping from the tire.

Abstract: Disclosed is a liquid coagulant which can be injected into the inside of a tire without removing the tire from a rim and which can prevent the scattering of a residue of a tire puncture sealing material when the tire is removed from the rim. The liquid coagulant can coagulate an emulsion that contains a natural rubber latex. The liquid coagulant comprises a urethane resin and/or an acrylic resin which has a pH value of 2.0 to 4.0 and contains a cationic functional group.

Abstract: A laminated body of rubber layers includes: a resin layer formed from a polyester resin or a polyamide resin; a rubber layer formed from a rubber composition containing a diene rubber; and an adhesive layer disposed between the resin layer and the rubber layer. The adhesive rubber composition contains a modified rubber composition (A) or a modified rubber composition (B) both having a number average molecular weight of 70,000 to 110,000. The modified rubber composition (A) is formed from a modified butyl rubber (1) formed by reacting, with a butyl rubber, a compound having in a molecule a nitroxide free radical that is stable at ambient temperature in the presence of oxygen, a radical initiator, and a co-crosslinking agent. The modified rubber composition (B) is formed by compounding the co-crosslinking agent with a modified butyl rubber (2) formed by reacting the compound and the radical initiator with the butyl rubber.

Abstract: A gelling agent, and a method of use for the same, for gelling a puncture repair material, the puncture repair material including a natural rubber latex, a resin emulsion, and an antifreezing agent, the gelling agent comprising a compound (?) of the following Formula (1). In the following Formula 1, R1 is an alkyl group having from 13 to 30 carbon atoms or an alkenyl group having from 13 to 30 carbon atoms.

Abstract: Disclosed is a liquid coagulant which can be injected into the inside of a tire without removing the tire from a rim and which can prevent the scattering of a residue of a tire puncture sealing material when the tire is removed from the rim. The liquid coagulant can coagulate an emulsion that contains a natural rubber latex. The liquid coagulant comprises a urethane resin and/or an acrylic resin which has a pH value of 2.0 to 4.0 and contains a cationic functional group.

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: A method and device for recovering puncture repair liquid without cutting out a tire valve. The method uses a device including a tube and either a pipe member or a drainage device. The tube reaches a tire inner surface when inserted into the tire from a tire valve mounted to a wheel, and the pipe member or drainage device connects between the tire valve and a pressurized air source. A valve core is detached from a tire valve of the wheel. The tube is inserted into the tire via the valve, the pipe member or drainage device is connected between the valve and air source, the tire is filled with air from the air source, and the puncture repair liquid in the tire is recovered through an end portion of the pipe member or drainage port due to air escaping from the tire.

Abstract: Disclosed is a liquid coagulant which can be injected into the inside of a tire without the need of removing the tire from a rim and which can prevent the scattering of a residue of a tire puncture sealing material when the tire is removed from the rim. The liquid coagulant can coagulate an emulsion that contains a natural rubber latex and/or a synthetic resin emulsion. The liquid coagulant contains a foaming agent capable of foaming the emulsion.

Abstract: Provided are a method and a kit for recovering puncture repair liquid, which have made it possible to easily and quickly dispose of spent puncture repair liquid. The method for recovering puncture repair liquid according to the present invention uses a kit for recovering the puncture repair liquid which is provided with a coagulant for coagulating the puncture repair liquid and a flexible bag containing the puncture repair liquid, and includes injecting the puncture repair liquid drawn from the inside of a tire into the bag, mixing the puncture repair liquid and the coagulant in the bag, and recovering the puncture repair liquid in a coagulated state.

Abstract: A highly heat-conductive epoxy resin composition, which comprises epoxy resin in a liquid state at room temperature, a latent curing agent, a highly heat-conductive filler, and a non-ionic surfactant, where preferably the latent curing agent is mixed with a portion of the epoxy resin in a liquid state at room temperature to form a master batch, can keep a relatively low viscosity, even if a large amount of the filler is contained, and can be cured at a relatively low temperature for a short time, and has a distinguished storage stability as one-component composition.

Abstract: A tire puncture sealant having both excellent sealing performance and excellent storage performance, specifically a tire puncture sealant containing a natural rubber latex (A) and a VEVA copolymer resin emulsion (B), wherein the solid content mass of the natural rubber latex (A)/solid content mass of the VEVA copolymer resin emulsion (B) is between 80/20 and 15/85.

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: A tire puncture sealant having both excellent sealing performance and excellent storage performance, specifically a tire puncture sealant containing a natural rubber latex (A) and a VEVA copolymer resin emulsion (B), wherein the solid content mass of the natural rubber latex (A)/solid content mass of the VEVA copolymer resin emulsion (B) is between 80/20 and 15/85.

Abstract: A gelling agent, and a method of use for the same, for gelling a puncture repair material, the puncture repair material including a natural rubber latex, a resin emulsion, and an antifreezing agent, the gelling agent comprising a compound (?) of the following Formula (1). In the following Formula 1, R1 is an alkyl group having from 13 to 30 carbon atoms or an alkenyl group having from 13 to 30 carbon atoms.