A process for the production of a coated rubber item, comprising: (i) provision of a semifinished product having the main shape of the rubber item, where the semifinished product is composed of a rubber composition comprising at least one rubber and at least one crosslinking agent; (ii) coating of the semifinished product with a solvent-free coating composition comprising at least one monomer amenable to free-radical polymerization, (iii) crosslinking of the rubber composition and polymerization of the coating composition, to give a coated rubber item;
wherein the boiling point of the at least one monomer amenable to free-radical polymerization is ≥150° C. and the crosslinking of the rubber composition takes place at the same time as the polymerization of the coating composition.

Masterbatch compositions comprising encapsulated stannous chloride for use in the production of thermoplastic vulcanizates, and methods related thereto. For example, the present disclosure provides for a composition comprising stannous chloride powder encapsulated in a carrier compound, the carrier compound being solid at a temperature in the range of 15.5° C. to 260° C. (60° F. to 500° F.).

The present invention provides a polyolefin resin foam sheet having an area density of 5 g/m.sup.2 or more and 400 g/m.sup.2 or less, and having a time (t) required for a weight decrease from 90% by mass to 10% by mass, of 9 minutes or more, as measured by thermogravimetric analysis carried out at a heating rate of 10° C./min and a measurement temperature of 23° C. to 550° C. According to the present invention, a polyolefin resin foam sheet can be provided that has a high fire retardancy while maintaining a lightweight property.

The present disclosure relates to TPV compositions suitable for foaming, as well as foamed TPV compositions, methods of making the foregoing, and applications of various foamed TPV compositions. The TPV compositions comprise an at least partially vulcanized rubber component dispersed within a thermoplastic component comprising a thermoplastic resin and a propylene-based elastomer, oil, and optionally one or more additives. According to some aspects, the TPV composition may be made in part by preloading some portion of process oil prior to addition of the curative. TPV compositions provided herein are particularly suitable for foaming with thermo-expandable microsphere foaming agents.

The present invention relates to a rubber composition containing a rubber component, a eutectic compound, metal oxide, and a peroxide-based crosslinking agent, and a production method thereof. The rubber composition in which the blending amount of metal oxide such as zinc oxide is largely reduced is obtained, which may have the same vulcanization characteristics and vulcanized-rubber physical properties as those of a rubber composition in which a large amount of metal oxide is blended, while considering the environment.

A method of combining rubbers and plastics when injection molding, and compositions usable in injection molding, are shown and described. Comminuted rubber from waste tires and waste plastics including any of high density polyethylene, polyethylene terephthalate, and polypropylene are combined and heated to melt at least the plastics. In one optional approach, both are melted. Plastics comprise from twenty to eighty percent by weight of the mixture, with rubber accounting for the balance. The mixture may be fortified with bonding, compatibilizing, and strengthening agents. The compositions may be cooled and pelletized for immediate use in injection operations.

An additive masterbatch composition comprising a semi-crystalline polyolefin carrier resin and an additive package comprising a product of a reaction of an acidic condensation catalyst and a secondary diarylamine. A moisture-curable polyolefin composition comprising the additive masterbatch composition and a (hydrolyzable silyl group)-functional polyolefin prepolymer. A method of making the compositions; a moisture-cured polyolefin composition prepared therefrom; a manufactured article comprising or made from the formulation; and a method of using the manufactured article.

An inorganic degradable plastic masterbatch material is disclosed, the product prepared meets the degradation requirements and has higher mechanical strength and faster degradation rate than ordinary plastic products. The material is used to prepare various environmentally friendly degradable products. The inorganic degradable plastic masterbatch material comprises the following components: calcium carbonate mineral powder with mass percentage of 56-72%; polyethylene with mass percentage of 3-10%; polypropylene with mass percentage of 18-30%; glass fibers with mass percentage of 2-5%; and additives with mass percentage of 2-5%.

To provide a laminate excellent in alkali resistance and interlaminar strength at high temperature, and a process for producing the laminate. A process for producing a laminate, comprising producing a non-crosslinked laminate having a layer of a first composition containing a copolymer having fluorine atoms and a layer of a second composition containing a non-fluorinated elastic polymer, and crosslinking the first composition and the second composition to produce a laminate having a first layer formed of a crosslinked product of the first composition and a second layer formed of a crosslinked product of the second composition, wherein when the first composition and the second composition contains a common crosslinking aid, the absolute value of the crosslinking rate difference between the first composition and the second composition is at most 0.30.

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.