A rubber composition capable of forming a foam such as a roller main body which has a low rubber hardness and is soft in a state in which an average cell diameter thereof is small is provided. The rubber composition includes NBR whose Mooney viscosity is 15 to 50 having a proportion being 10 parts by mass or more in 100 parts by mass of the total amount of rubber, epichlorohydrin rubber whose Mooney viscosity is 5 to 35 having a proportion being 10 parts by mass or more in 100 parts by mass of the total amount of rubber, and 10 parts by mass or less of carbon black and 7 parts by mass or less of a foaming agent with respect to 100 parts by mass of the total amount of rubber, and has a Mooney viscosity of 35 or less.

An object of the present invention is to provide a composition for a molded foam containing a peroxide and a blowing agent, in which cellulose fibers are uniformly dispersed in a resin for a foam molding material having high hydrophobicity such as a thermoplastic resin and a rubber, and a foam excellent in mechanical properties which is obtained by reaction of the composition for a molded foam during foam molding. The composition for a molded foam contains a modified cellulose fiber (A) having an unsaturated bond, a thermoplastic resin and/or a rubber (B), a peroxide (C), and a blowing agent (D).

The present invention provides a highly dispersible metallic acrylate composition containing specific content of a graphene, a flake graphite or a combination thereof as a thermally conductive powder, and thus has better stability and dispersivity, which leads to advantages of low adhesion to the metal surface and ease of mixing in resin. Moreover, the metallic acrylate composition can be applied to resin composition as an auxiliary crosslinking coagent for enhancing mechanical strength and good uniformity of cell dispersion in the foamed product, such that the foamed products can be used as architectural materials, materials of daily commodities, vehicle materials, damping and cushioning materials, packing materials, sport pad materials, or shoe materials.

A polymer composition with increased melt strength is disclosed. The polymer composition contains at least one polypropylene polymer combined with at least one melt strength modifier. The melt strength modifier can comprise a sorbitol derivative in an amount sufficient to change the melt strength characteristics and properties of the polymer. The polymer composition can be used in thermoforming processes and to produce polymer foams. The melt strength modifier can increase the melt strength of the polymer without having to induce branching in the polypropylene polymer.

The present invention includes a foam composition including a foam precursor and an ortho-phthalate-based compound, wherein a volume ratio of the foam precursor to the ortho-phthalate-based compound is 100:10 to 50, and a flexible thermoelectric device including the foam manufactured thereby.

Disclosed are compositions and methods for creating a textured or patterned surface on elastomeric extruded film.

The present invention provides a moisture-curable hot melt urethane composition, including a hot melt urethane prepolymer (A) having an isocyanate group and a foaming agent composition (B) containing N,N-dinitrosopentamethylenetetramine (b1), urea (b2) and a polyol (b3). The present invention also provides a method for producing a foamed and cured product of a moisture-curable hot melt composition, which includes heat-melting a hot melt urethane prepolymer (A), then mixing the foaming agent composition (B) therewith, applying the resultant mixture to a substrate, and performing a heating treatment at a temperature equal to or higher than heat-melting temperature of the (A) to thereby cause foaming and curing. An object of the present invention is to provide a solvent-free foaming system, according to which a foamed and cured product with excellent texture can be obtained, and an excellent foamed state can be maintained even in a thin film.

Provided is a vulcanized rubber composition having good on-ice performance and excellent wear resistance. The rubber composition of the present disclosure contains a rubber component containing natural rubber, a cyclic polyol compound having a hydrocarbyl group, and a liquid polymer having a polystyrene-equivalent weight-average molecular weight of 5000 or more and less than 40000 measured by gel permeation chromatography.

A thermosetting resin composition. The composition comprises thermosetting resin, a cross-linking agent, accelerator, and a porogen. The porogen is a porogen capable of being dissolved in an organic solvent. The organic solvent is an organic solvent capable of dissolving the thermosetting resin. A mode of directly adding the dissolvable porogen to a resin system is used, tiny pores that are uniform in pore diameter can be evenly distributed in resin matrix by means of a simple process at low cost, and the high-performance composition having a low dielectric constant and low dielectric loss is obtained; the method has good applicability to a great number of resin systems; because the pore size in the system reaches a nanometer grade, performance of the final system, such as mechanical strength, thermal performance and water absorption rate, is not sacrificed.

A composite article comprises an article presenting a surface and a thermally expandable composition disposed on the surface of the article. The thermally expandable composition comprises (a) from about 35 to about 65 percent by weight of a polyolefin resin; (b) from about 2 to about 15 percent by weight of a thermoplastic resin; (c) from about 1 to about 6 percent by weight of a curing agent suitable for cross-linking the polyolefin resin (a); (d) from about 15 to about 45 percent by weight of filler; and (e) from about 1 to about 10 percent by weight of a chemical blowing agent which is activated at an activation temperature, each based on the total weight of the thermally expandable composition. Methods of preparing and using the composite article, and an assembly formed from the composite article, are also disclosed.