A method of manufacturing a tread for agricultural tires, the method comprising providing an agricultural tire casing, providing a cured rubber component having first and second planar surfaces, providing a plurality of cushion gums, wherein the plurality of cushion gums contains a cure system comprising a stable dinitrile oxide compound, providing a plurality of lugs, and forming an agricultural tread composite by mating the lugs to a planar surface of the cured rubber component using the cushion gum.

The invention relates to a method of preparing reclaimed rubber, especially using multi-stage screw extruders, which belongs to the field of recycling and reusing of waste rubber. The rubber powder and softener which were preliminarily mixed are compacted and added into first counter rotating twin screw extruder through thermal insulation and metering apparatus, the softener permeates the waste rubber powder uniformly under the action of temperature in the extruder to finish primary desulfurization of rubber waste powder; add preliminary devulcanized material continuously into second multi screw extruder after cooling by transformation device, rapid desulfurization and regeneration can be achieved by means of activator and shear action; The desulfurized rubber powder is cooled and transported into the third multi-screw extruder in series, the performance of deprocessing can be improved by shear action under low temperature; After extrusion, the recycled rubber is obtained by molding device and cooling device. The whole process is completed under closed oxygen isolation condition, realizing safe, simple and continuous desulfurization regeneration. It is energy saving and environmental protection with excellent properties.

The invention relates to a method of preparing reclaimed rubber, especially using multi-stage screw extruders, which belongs to the field of recycling and reusing of waste rubber. The rubber powder and softener which were preliminarily mixed are compacted and added into first counter rotating twin screw extruder through thermal insulation and metering apparatus, the softener permeates the waste rubber powder uniformly under the action of temperature in the extruder to finish primary desulfurization of rubber waste powder; add preliminary devulcanized material continuously into second multi screw extruder after cooling by transformation device, rapid desulfurization and regeneration can be achieved by means of activator and shear action; The desulfurized rubber powder is cooled and transported into the third multi-screw extruder in series, the performance of deprocessing can be improved by shear action under low temperature; After extrusion, the recycled rubber is obtained by molding device and cooling device. The whole process is completed under closed oxygen isolation condition, realizing safe, simple and continuous desulfurization regeneration. It is energy saving and environmental protection with excellent properties.

An insulating material, in particular a permeable fire-proof sound insulating material comprising water glass and rubber, in particular recycled rubber, consisting of a harden-able mixture which contains 47 to 61 wt % of rubber granulate, 30 to 50 wt % of aqueous sodium silicate, 0.1 to 0.5 wt % water glass stabiliser, 0.4 to 1.5 wt % water glass hardener, and 2 to 6 wt % of aluminium hydroxide, the surface of the rubber granulate being provided with carbon black, the carbon black constituting 0.1 to 1 wt % of total weight. A method for the production of insulating material, according to which firstly the rubber granules are mixed with an aqueous solution of carbon black so as to coat their entire surface, then is added to the aqueous sodium silicate solution aluminium hydroxide and the whole is mixed so as to form an insulating mixture, and then a water glass stabiliser is added to the aqueous sodium silicate solution, and then to this solution is mixed water glass hardener, with this solution being further stirred for 1 to 10 minutes to form a binder solution, and the insulating mixture is added to the binder solution with constant stirring, and the whole is mixed, and the resulting mixture is then poured into the application site.

The present invention provides an innerliner rubber composition having an excellent balance of sheet processability and air retention properties, and a pneumatic tire including the rubber composition. The present invention relates to an innerliner rubber composition, containing a rubber component; a mixture of a fatty acid metal salt and a fatty acid amide; an oil; and a C5 petroleum resin, the rubber component including, based on 100% by mass thereof, at least 70% by mass of a butyl-based rubber, the mixture being present in an amount of 0.8 to 3.2 parts by mass per 100 parts by mass of the rubber component, the mixture, the oil, and the C5 petroleum resin being present in a combined amount of 6.0 to 16.0 parts by mass per 100 parts by mass of the rubber component.

The present invention provides an innerliner rubber composition having an excellent balance of sheet processability and air retention properties, and a pneumatic tire including the rubber composition. The present invention relates to an innerliner rubber composition, containing a rubber component; a mixture of a fatty acid metal salt and a fatty acid amide; an oil; and a C5 petroleum resin, the rubber component including, based on 100% by mass thereof, at least 70% by mass of a butyl-based rubber, the mixture being present in an amount of 0.8 to 3.2 parts by mass per 100 parts by mass of the rubber component, the mixture, the oil, and the C5 petroleum resin being present in a combined amount of 6.0 to 16.0 parts by mass per 100 parts by mass of the rubber component.

Some embodiments of the present disclosure relate to a method comprising obtaining a mixture comprising at least one vinyl polymer, at least one organic acid, and at least one hydronium ion donor. In some embodiments, the method comprises reacting an —OH group of the B polymer chain segment with the at least one organic acid in the presence of the at least one hydronium ion donor, so as to form at least one polyvinyl ester. Some embodiments of the present disclosure relate to a roofing material comprising at least one reinforcement material and at least one polyvinyl ester.

Some embodiments of the present disclosure relate to a method comprising obtaining a mixture comprising at least one vinyl polymer, at least one organic acid, and at least one hydronium ion donor. In some embodiments, the method comprises reacting an —OH group of the B polymer chain segment with the at least one organic acid in the presence of the at least one hydronium ion donor, so as to form at least one polyvinyl ester. Some embodiments of the present disclosure relate to a roofing material comprising at least one reinforcement material and at least one polyvinyl ester.

A method for synthesising polymers through devulcanisation from waste containing elastomers, the method including: —a) contacting the waste containing elastomers with a solvent in the presence of a devulcanisation agent, b) heating the mixture produced in step a), at a temperature of between 20° C. and 250° C. for a period of between 15 minutes and 24 hours in the presence of a devulcanisation agent, the concentration of devulcanisation agent, and the ratio between the concentration of devulcanisation agent, expressed as parts per hundred of elastomer (phr) and a volume of solvent, expressed in ml, is: greater than 0.3 phr/ml of solvent or less than 0.2 phr/ml of solvent when the method is carried out in air, greater than 0.06 phr/ml of solvent when the method is carried out in an inert atmosphere.

A method for synthesising polymers through devulcanisation from waste containing elastomers, the method including: —a) contacting the waste containing elastomers with a solvent in the presence of a devulcanisation agent, b) heating the mixture produced in step a), at a temperature of between 20° C. and 250° C. for a period of between 15 minutes and 24 hours in the presence of a devulcanisation agent, the concentration of devulcanisation agent, and the ratio between the concentration of devulcanisation agent, expressed as parts per hundred of elastomer (phr) and a volume of solvent, expressed in ml, is: greater than 0.3 phr/ml of solvent or less than 0.2 phr/ml of solvent when the method is carried out in air, greater than 0.06 phr/ml of solvent when the method is carried out in an inert atmosphere.