Provided are surface-modified elastic bodies (e.g. gasket for syringes) each obtained by a surface modification method for modifying a rubber vulcanizate or a thermoplastic elastomer, the method being capable of providing surfaces with excellent properties such as excellent sliding properties, excellent durability against repeated sliding motion, and excellent performance in preventing adsorption and aggregation of proteins, and allowing the surfaces to maintain the sealing properties, without using expensive self-lubricating plastics. The invention relates to surface-modified elastic bodies (e.g. gasket for syringes) at least partially having a surface modified by a surface modification method including: step 1 of forming polymerization initiation points on a surface of an object to be modified that includes a rubber vulcanizate or thermoplastic elastomer, and step 2 of radically polymerizing a monomer containing a CN bond in a molecule thereof, starting from the polymerization initiation points, to grow polymer chains on the surface of the object.

An article comprising a polymeric foam, wherein the polymeric foam contains a continuous polymer matrix defining cells therein, the polymer matrix containing: (a) from 25 to 65 weight percent of one or more olefin block copolymer having a melt index of two grams per ten minutes or more, (b) from 65 to 25 weight percent of one or more chlorinated olefin polymer having a Mooney viscosity less than 60 (ML 1+4, 125 C.), and (c) from 5 to 30 weight parts of antimony trioxide relative to 100 weight parts of polymers in the polymeric foam, with weight percent values relative to total polymer weight in the polymeric foam; a process for preparing the article.

The present invention provides a resin composition for an electrically conductive resin film which is excellent in electric conductivity, tensile elongation, durability to bending and flexibility and is suitable as electrodes or protective coatings on the electrodes in redox flow batteries. A resin composition includes (A) 100 parts by mass of a thermoplastic resin, (B) 1 to 60 parts by mass of carbon nanotubes and (C) 1 to 100 parts by mass of at least one selected from the group consisting of acetylene black and graphite.

A composition adapted for the production of a thermosetting elastomer with antimicrobial capabilities by vulcanization by molding includes an elastomer, a catalyst and/or a vulcanization activator, and an antimicrobial additive that includes zinc pyrithione and silver phosphate glass in a 1:1 ratio by weight.

A method for preparing a recycled polymer is provided. The method includes: bringing a recovered polymer containing an additive into contact with an impregnation solvent in an impregnation tank to obtain a slurry containing a swollen polymer and an eluate; separating the slurry into a solid mixture containing the swollen polymer and a liquid mixture containing the eluate in a solid-liquid separator; and obtaining a recycled polymer from the solid mixture and recovering the additive from the liquid mixture, wherein the impregnation solvent is a mixed solvent of two or more solvents.

The present invention provides a method for surface-modifying a rubber vulcanizate or a thermoplastic elastomer, which can cost-effectively provide a variety of functions, such as remarkable sliding properties or biocompatibility, according to the application. The present invention relates to a method for surface-modifying a rubber vulcanizate or a thermoplastic elastomer as a modification target, the method including: step 1 of forming polymerization initiation points A on a surface of the modification target; step 2 of radically polymerizing a non-functional monomer starting from the polymerization initiation points A to grow non-functional polymer chains; step 3 of washing the modification target on which the non-functional polymer chains are grown; step 4 of forming polymerization initiation points B on a surface of the non-functional polymer chains; and step 5 of radically polymerizing a fluorine-containing functional monomer starting from the polymerization initiation points B to grow fluorine-containing functional polymer chains.

The present invention relates to a material for thermal and/or acoustic insulation which consists of at least 300 phr, preferably at least 400 phr, but less than 1200 phr, preferably less than 1000 phr, especially preferred less than 800 phr ingredients in total, comprising 100 phr of at least one polymer, of which at least 60 phr, preferably at least 70 phr, especially preferred at least 80 phr is chlorinated polyethylene (CPE), the process of manufacturing such material, wherein the polymeric material is expanded by decomposition of a chemical blowing agent.

A film is provided, including 10 to 20 weight percent of a thermoplastic elastomer, preferably a chlorinated polyethylene, 10 to 20 weight percent of a thermoplastic that is a chlorine-based plastic, less than 15 weight percent of a modifier that imparts predetermined mechanical properties to the film, and 20 weight percent or less of a nondiffusing plasticizer, less than 40 wt % of a filler and 20 wt % or less of a flame-inhibiting material.

A method of reducing foamed density that results in a foamed polyvinyl chloride (PVC) component exhibiting reduced density. The foamed PVC component contains at least a PVC resin and a process aid blend. The process aid blend contains from 1 weight % to 60 weight % (based on the weight of the blend) of a functionalized process aid, and from 99 weight % to 40 weight % (based on the weight of the blend) of a non-functionalized process aid. The functionalized process aid includes at least one base polymer functionalized with a reactive epoxy, hydroxyl, -keto ester, -keto amide, or carboxylic acid functional group. The foamed PVC component containing the process aid blend has a lower density than a reference foamed PVC component made using the same process conditions and additives, but which contains only non-functionalized process aid and not the functionalized process aid.

There is provided a crosslinking agent for chlorinated butyl rubber that allows for a fast crosslinking reaction rate and excellent rubber elasticity. With the use of a primary aminotriazine dithiol compound represented by Formula (1) below as a crosslinking agent for a chlorinated butyl rubber composition, it becomes possible to crosslink the composition at a faster rate and to obtain crosslinked rubber with excellent rubber elasticity.

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where R.sup.1 is a linear or branched hydrocarbon group having 6 to 10 carbon atoms.