The provided tire has excellent durability regardless of use in a high-humidity environment or contact with water, even though the framework member of the tire is made of a resin material. The resin material is made of a resin composition including 60 mass % or more of a polyamide resin formed by polymerizing an aliphatic diamine having 6 to 20 carbon atoms and an aliphatic dicarboxylic acid having 10 to 20 carbon atoms.

A resin composition can be formed into a product excellent in coloration resistance even if being subjected to a melt-forming process and the like a plurality of times and hence frequently subjected to thermal history. A product formed from the resin composition, and a multilayer structure are also provided. The resin composition contains: (A) a saponified ethylene-vinyl ester copolymer; and (B) a sorbic acid ester; wherein the sorbic acid ester (B) is present in a proportion of 0.001 to 10 ppm based on the total weight of the saponified ethylene-vinyl ester copolymer (A) and the sorbic acid ester (B).

Nanocomposites include metal oxide nanoparticles and (meth)acrylic acid polymers where the nanoparticles are surface modified with a carboxylic acid silane and where the (meth)acrylic acid polymer is at least partially neutralized. The compositions are transparent, with high transmission and low haze up to very high nanoparticle loading. The compositions also exhibit improved mechanical properties of impact resistance and tensile modulus.

Nanocomposites include metal oxide nanoparticles and (meth)acrylic acid polymers where the nanoparticles are surface modified with a carboxylic acid silane and where the (meth)acrylic acid polymer is at least partially neutralized. The compositions are transparent, with high transmission and low haze up to very high nanoparticle loading. The compositions also exhibit improved mechanical properties of impact resistance and tensile modulus.

Provided is a semi-conductive composition for a power cable, more particularly, a semi-conductive composition for a power cable having excellent mechanical properties and electrical properties, and more specifically, a semi-conductive composition for a power cable capable of having improved scorch stability, improved surface smoothness, improved space charge accumulation suppression characteristic to thereby be applicable to an ultra-high voltage direct current power cable.

Provided is a semi-conductive composition for a power cable, more particularly, a semi-conductive composition for a power cable having excellent mechanical properties and electrical properties, and more specifically, a semi-conductive composition for a power cable capable of having improved scorch stability, improved surface smoothness, improved space charge accumulation suppression characteristic to thereby be applicable to an ultra-high voltage direct current power cable.

There is provided a hollow extrusion-molded material formed by drawdown molding of a resin composition, the resin composition including, as a base resin, an ethylene-ethyl acrylate copolymer, or an ethylene-ethyl acrylate copolymer and linear low-density polyethylene, the resin composition including a bromine-based flame retardant, antimony trioxide and magnesium hydroxide, wherein a composition ratio between the ethylene-ethyl acrylate copolymer and the linear low-density polyethylene, a content of the bromine-based flame retardant, a content of the antimony trioxide, and a content of the magnesium hydroxide are within specified ranges. There are also provided a crosslinked polymer of the hollow extrusion-molded material, and a heat-shrinkable tube and a multilayer heat-shrinkable tube obtained from the crosslinked polymer.

There is provided a hollow extrusion-molded material formed by drawdown molding of a resin composition, the resin composition including, as a base resin, an ethylene-ethyl acrylate copolymer, or an ethylene-ethyl acrylate copolymer and linear low-density polyethylene, the resin composition including a bromine-based flame retardant, antimony trioxide and magnesium hydroxide, wherein a composition ratio between the ethylene-ethyl acrylate copolymer and the linear low-density polyethylene, a content of the bromine-based flame retardant, a content of the antimony trioxide, and a content of the magnesium hydroxide are within specified ranges. There are also provided a crosslinked polymer of the hollow extrusion-molded material, and a heat-shrinkable tube and a multilayer heat-shrinkable tube obtained from the crosslinked polymer.

A degradable EVOH high-barrier composite film, characterized in that the materials of various layers in the composite film all obtain approximately-consistent biodegradability by introducing biomass, and the additive amount of the additive master batch in the materials of each layer is controlled within the range of 0.3-15% of the total mass of the materials of the corresponding layer; the hydrophilic activity of the hydrophilic groups in the additive master batch should be greater than or equal to that of the hydrophilic groups in the materials of each layer; by adding the additive master batch, the mole ratios of the hydrophilic groups to carbon atoms of the materials of various layers tend to be consistent, namely, the bioactivities tend to be consistent, so that the degradation rates of the materials of various layers in the composite film tend to be consistent. The present invention makes contribution to obtaining approximately-consistent bioactivities and approximately-consistent biodegradation rates by balancing the mole ratios of the hydrophilic groups to carbon atoms in the materials of various layers, and the appearance, the functions and the physical and mechanical properties of a product remain unchanged.

One aspect of the present invention is a puncture healing polymer blend comprising a self-healing first polymer material having sufficient melt elasticity to snap back and close a hole formed by a projectile passing through the material at a velocity sufficient to produce a local melt state in the first polymer material. The puncture healing polymer blend further includes a non-self-healing second material that is blended with the first polymer material. The blend of self-healing first polymer material and second material is capable of self-healing, and may have improved material properties relative to known self-healing polymers.