Provided is a resin composition configured to show a small change in the void ratio of hollow resin particles during mold processing and configured to stably mold a lightweight molded product having a small variation in specific gravity. The resin composition is a resin composition comprising 50 parts by mass to 95 parts by mass of a thermoplastic elastomer and 5 parts by mass to 50 parts by mass of hollow resin particles, wherein the hollow resin particles have a void ratio of from 50% to 85%; wherein the hollow resin particles have a shell containing a resin; and wherein, with respect to 100 parts by mass of repeating units constituting the resin, 30 parts by mass to 100 parts by mass of a crosslinkable monomer unit and 0 part by mass to 70 parts by mass of a non-crosslinkable monomer unit are contained as a polymerizable monomer unit.

Provided is a resin composition configured to show a small change in the void ratio of hollow resin particles during mold processing and configured to stably mold a lightweight molded product having a small variation in specific gravity. The resin composition is a resin composition comprising 50 parts by mass to 95 parts by mass of a thermoplastic elastomer and 5 parts by mass to 50 parts by mass of hollow resin particles, wherein the hollow resin particles have a void ratio of from 50% to 85%; wherein the hollow resin particles have a shell containing a resin; and wherein, with respect to 100 parts by mass of repeating units constituting the resin, 30 parts by mass to 100 parts by mass of a crosslinkable monomer unit and 0 part by mass to 70 parts by mass of a non-crosslinkable monomer unit are contained as a polymerizable monomer unit.

Disclosed herein is a stabilizer mixture for modifying an olefin-based polymer, which comprises at least one organic phosphorus-containing antioxidant represented by a formula selected from the group consisting of formulae (1), (2), (3), (4), (5), (6), (7), and (8), as well as at least one sulfur-containing carboxylate salt represented by a formula selected from the group consisting of formulae (9), (10), (11), and (12). Also disclosed herein is a modified polymer composition prepared from an olefin-based polymer using the stabilizer mixture. The olefin-based polymer is selected from the group consisting of polyolefin, ethylene-vinyl acetate copolymer, and a combination thereof.

Disclosed herein is a stabilizer mixture for modifying an olefin-based polymer, which comprises at least one organic phosphorus-containing antioxidant represented by a formula selected from the group consisting of formulae (1), (2), (3), (4), (5), (6), (7), and (8), as well as at least one sulfur-containing carboxylate salt represented by a formula selected from the group consisting of formulae (9), (10), (11), and (12). Also disclosed herein is a modified polymer composition prepared from an olefin-based polymer using the stabilizer mixture. The olefin-based polymer is selected from the group consisting of polyolefin, ethylene-vinyl acetate copolymer, and a combination thereof.

The present invention provides a 4-methyl-1-pentene/α-olefin copolymer being excellent in lightness, stress absorption, stress relaxation, vibration damping properties, scratch resistance, abrasion resistance, toughness, mechanical properties and flexibility, having no stickiness during molding operation and being excellent in the balance among these properties; a composition comprising the polymer; and uses thereof. The 4-methyl-1-pentene/α-olefin copolymer (A) of the present invention satisfies specific requirements, and comprises 5 to 95 mol % of a structural unit (i) derived from 4-methyl-1-pentene, 5 to 95 mol % of a structural unit (ii) derived from at least one kind of α-olefin selected from α-olefins having 2 to 20 carbon atoms excluding 4-methyl-1-pentene and 0 to 10 mol % of a structural unit (iii) derived from a non-conjugated polyene, provided that the total of the structural units (i), (ii), and (iii) is 100 mol %.

The present invention provides a 4-methyl-1-pentene/α-olefin copolymer being excellent in lightness, stress absorption, stress relaxation, vibration damping properties, scratch resistance, abrasion resistance, toughness, mechanical properties and flexibility, having no stickiness during molding operation and being excellent in the balance among these properties; a composition comprising the polymer; and uses thereof. The 4-methyl-1-pentene/α-olefin copolymer (A) of the present invention satisfies specific requirements, and comprises 5 to 95 mol % of a structural unit (i) derived from 4-methyl-1-pentene, 5 to 95 mol % of a structural unit (ii) derived from at least one kind of α-olefin selected from α-olefins having 2 to 20 carbon atoms excluding 4-methyl-1-pentene and 0 to 10 mol % of a structural unit (iii) derived from a non-conjugated polyene, provided that the total of the structural units (i), (ii), and (iii) is 100 mol %.

A process of extraction, quantification and recovery of additives in polypropylene with the stages of washing the plastic material (A), grinding the material (A) to a particle size from 10 to 500 microns, extraction where the material (A) is transferred to a column (1) and then such material successively passes through column (2), column (3) and column (4), respectively, for successive extractions with solvents (I), (II), (III) and (IV), packed column extraction, where the solvent with the additives obtained from each extraction in columns (1), (2), (3) and (4) passes through packed columns (1′), (2′), (3′) and (4′), respectively, crystallization of the additives obtained after each extraction stage in packed columns (1′), (2′), (3′) and (4′) respectively; and quantification of the additives obtained and where the residual material without additives is subjected to pyrolysis.

Provided are a flame-retardance-imparting material and a flame-retardant resin formed article that utilize plant waste.

Resolution means:

The present invention is a flame-retardance-imparting material obtained by contacting a plant material selected from plants and plant-derived materials with an aqueous solvent and then removing the aqueous solvent; and a flame-retardant resin formed article including a resin composition containing a flame-retardance-imparting material obtained by contacting a plant material selected from plants and plant-derived materials with an aqueous solvent and then removing the aqueous solvent, and a resin.

An injection molded article containing a resin composition containing a polyamide compound (A) and a resin (B), wherein the polyamide compound (A) contains from 25 to 50% by mol of a diamine unit, which contains a particular diamine unit, in an amount of 50% by mol or more; from 25 to 50% by mol of a dicarboxylic acid unit, which contains a particular dicarboxylic acid unit, in an amount of 50% by mol or more; and from 0.1 to 50% by mol of a particular constitutional unit.

An injection molded article containing a resin composition containing a polyamide compound (A) and a resin (B), wherein the polyamide compound (A) contains from 25 to 50% by mol of a diamine unit, which contains a particular diamine unit, in an amount of 50% by mol or more; from 25 to 50% by mol of a dicarboxylic acid unit, which contains a particular dicarboxylic acid unit, in an amount of 50% by mol or more; and from 0.1 to 50% by mol of a particular constitutional unit.