A phase difference film solely consisting essentially of a single species of copolymer P containing a polymerization unit A and a polymerization unit B, the phase difference film having a phase separation structure that exhibits a structural birefringence, and the phase difference film having an NZ factor of greater than 0 and smaller than 1; and the production method therefor. Preferably, the phase separation structure has a form of any of lamella, cylinder and spheroid, and the distance between phases in the phase separation structure is 200 nm or less.

A main purpose of the present invention is to provide a multi-block copolymer composition having good elasticity and excellent stress relaxation properties, as well as small tension set. The present invention achieves the purpose by providing a multi-block copolymer composition obtained by a modification treatment, the composition including a block copolymer B formed by introducing a functional group capable of forming a non-covalent bond to a block copolymer A; wherein the block copolymer A includes a block copolymer A1 having a specific primary structure and a block copolymer A2 having a specific primary structure, and the mass ratio (A1/A2) of the block copolymer A1 and the block copolymer A2 is 100/0 to 50/50.

Disclosed herein are various cable gel seal arrangements and thermoplastic gels useful therein. The thermoplastic gels are prepared from a composition including a styrene triblock copolymer, a styrene diblock copolymer, an oil extender, and an additive selected from poly(2,6-dimethyl-1,4-phenylene oxide), a C9 resin, poly(alpha-methylstyrene), a coumarone-indene resin, and combinations thereof, wherein the additive has a T.sub.g from about 95 C. to about 200 C. The thermoplastic gels advantageously exhibit low compression set.

A problem to be solved by the present invention is to provide a thermoplastic elastomer vibration-controlling sheet minimizing numbness of hands, feet, and a body even when a strong impact is applied as in the case where the sheet is bonded to and used on a grip of sporting goods such as a bat and a tennis racket serving as an object to be bonded. The present invention relates to a vibration-controlling sheet having an adhesive on one or both sides of a thermoplastic elastomer sheet that has numerous through-holes at a porosity of 5 to 80% and that has a loss factor tan of 0.3 or more at 0 C. and 30 Hz.

Self-assembled porous block copolymer materials with a complex block copolymer architecture, methods of preparing, uses for separation and detection, and devices for using as such. The porous materials contain at least one of macro, meso, or micro pores, at least some of which are isoporous, and include at least one block copolymer with at least two chemically distinct blocks, which further comprises a complex architecture such as: multiple distinct monomers in or between blocks, branching, crosslinking, or ring architectures.

The resin composition includes a block copolymer including a vinyl aromatic hydrocarbon-derived structural unit and a conjugated diene-derived structural unit, the resin composition satisfying the following (1) to (3): (1) an area ratio of components having a molecular weight in terms of polystyrene of equal to or more than 400,000 with respect to all components is equal to or more than 8% and equal to or less than 50%; (2) at least one main peak of a loss tangent value (tan ) measured under a condition of a frequency of 1 Hz at a temperature rising rate of 4 C./min in accordance with ISO 6721-1 is present in a range of equal to or more than 70 C. and equal to or less than 100 C.; and (3) a strain hardening degree ( max) of a compression-molded specimen prepared in accordance with ISO 293 is equal to or more than 2.0.

A multi-catalytic material that includes a polyelectrolyte membrane and methods of preparing the same are provided herein.

Polymeric foam layer comprising a star polymer, wherein the polymeric foam layer has a thickness up to 25,700 micrometers, and methods of making the same. Exemplary uses of polymeric foam layers described herein including a finishing pad for silicon wafers and vibration damping.

An optical layered film includes at least one A layer including a thermoplastic resin [A] and a B layer formed of a thermoplastic resin [B], wherein the at least one A layer is provided on at least one of surfaces of the B layer, a thickness-direction retardation Rthb of the B layer satisfies the following formula (1), and a tensile elongation at break Sa of a 1.5 mm-thick film (a1) formed of the thermoplastic resin [A] satisfies the following formula (2): (1) |Rthb|40 nm, and (2) Sa100%.

The present invention provides a polymer composition for manufacturing a foam, the polymer composition comprising a vinyl aromatic based copolymer and a processing aid, wherein the amount of the processing aid in the total weight of the polymer composition is equal to or more than 5 wt % and equal to or less than 75 wt %; and the polymer composition does not comprise ethylene-vinyl acetate copolymer, ethylene-butyl acrylate copolymer, ethylene--olefin copolymer, homopolymer and copolymer of polyethylene, homopolymer and copolymer of polypropylene, homopolymer and copolymer of polybutene and olefin-based ionic polymer. The present invention also provides the foam and the method for forming the same.