A method for manufacturing micronized rubber powders including grinding of a rubber granulated feedstock, size classification and storage of the micronized rubber powders thus obtained. A rubber formulation including at least one natural or synthetic rubber, a micronized rubber composition and optionally one or more of processing aids, antidegradants, fillers, accelerators and curatives. A method for manufacturing a rubber product, as well as to a solid rubber product.

A method for producing a latex composition, the method comprising a provision step of providing a conjugated diene polymer latex; a preparation step of adding a sulfur-based vulcanizing agent and a xanthogen compound to the conjugated diene polymer latex to prepare a latex composition before aging; and an aging step of, after the preparation of the latex composition before aging, aging the prepared latex composition before aging through storing of the latex composition at a temperature of 5 to 60° C. for 12 hours to 14 days, wherein the pH of the latex composition after 12 hours from the start of aging in the aging step is controlled to 9 or more.

Crumb rubber obtained from recycled tires is subjected to a process involving photodissociation to break a sulfur bond, sulfur-sulfur and/or sulfur-carbon bonds. The process utilizes a component that generates photonic energy upon being subjected to a compressing force (e.g., pressure). The photonic energy is bandwidth resonant with the sulfur-sulfur and/or sulfur-carbon bond, causing the bond to break apart. The resulting rubber is suitable for use in applications typically utilizing virgin rubber, such as new tires, engineered rubber articles, and asphalt rubber for use in waterproofing and paving applications.

The invention is directed to a thermally expandable composition comprising at least one solid rubber, at least on tackifying resin, a vulcanization system, and a thermally expandable graphite. The invention is also directed to a welding sealer tape comprising a substrate layer composed of the thermally expandable composition, to a method for providing sealing, structural adhesion, baffling, or combination thereof to a structure of a manufactured article, to a baffle and/or reinforcing element comprising the thermally expandable composition, to a method for sealing, baffling and/or reinforcing a cavity or a hollow structure, and to use of a thermally expandable graphite as a blowing agent in a thermally expandable material.

Provided is a thin film-shaped fiber-reinforced resin that can sufficiently increase the impact resistance of a coated resin molded body while suppressing the reduction in bending elastic modulus of the resin molded body. The thin film-shaped fiber-reinforced resin includes a plurality of reinforcing fibers that are arranged in a single direction alignment, and a matrix resin with which the reinforcing fibers are impregnated. The matrix resin includes a thermoplastic plastic and a thermoplastic elastomer. The content of the thermoplastic elastomer with respect to the total of the thermoplastic plastic mass and the thermoplastic elastomer mass is 5-40 mass %.

A resin composition includes 20 parts by weight to 45 parts by weight of a phosphorus-containing bismaleimide and 100 parts by weight of a thermosetting resin, wherein the phosphorus-containing bismaleimide has a structure of Formula (I); the thermosetting resin is selected from a vinyl-containing polyphenylene ether resin, a maleimide resin, a polyolefin resin, a prepolymer of maleimide resin, and a combination thereof. The resin composition may be used to make a prepreg, a resin film, a laminate or a printed circuit board, and at least one of the following properties can be improved, including flame retardancy, outgassing properties, arc resistance, copper foil peeling strength, X-axis coefficient of thermal expansion, glass transition temperature and water absorption rate.

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Compounds having an elastomer material, a filler material, at least one additive material, and at least one accelerant material are disclosed. In various embodiments, the filler material comprises a graphene-based carbon material. In various embodiments, the graphene-based carbon material comprises graphene comprising up to 15 layers, carbon aggregates having a median size from 1 to 50 microns, a surface area of the carbon aggregates at least 50 m.sup.2/g, when measured via a Brunauer-Emmett-Teller (BET) method with nitrogen as the adsorbate, and no seed particles.

A rubber composition manufacturing method comprises an operation in which at least rubber, silica, and silane coupling agent are kneaded in an internal kneader at not less than a temperature lower limit for a coupling reaction between the silica and the silane coupling agent to proceed. For at least a portion of time during which that operation is being carried out, a compressed gas is delivered to the kneading chamber while the ram is in a nonpressing state.

A method for preparing a retreaded tire, the method comprising (a) providing a tire casing; (b) providing a pre-cured tire tread; (c) applying a primer composition to the tire casing, the pre-cured tread, or both the tire casing and the pre-cured tread therefore form at least one primer layer, where the primer composition includes a halogenating agent and a solvent; (d) applying a urethane-based adhesive composition to at least one of the tire casing, an adhesive layer, the pre-cured tread, or the at least one primer layer; (e) mating the pre-cured tread to the tire casing to thereby sandwich the adhesive layer between the pre-cured tread and the tire casing and form a pre-cured composite: and (f) allowing the adhesive layer of the pre-cured composite to cure and thereby form a retreaded tire.

The present invention relates to a method for obtaining a polymeric material incorporating metallic particles, a polymeric material incorporating metallic particles and the use of said polymeric material.