A main object of the present invention is to provide a block copolymer composition which has good elasticity, while having excellent stress relaxation properties. The object is achieved by providing a block copolymer composition obtained by a modification treatment, the block copolymer composition comprising a block copolymer B formed by introducing a functional group capable of forming a non-covalent bond into a block copolymer A including at least one aromatic vinyl polymer block and at least one conjugated diene polymer block.

Provided is a carboxylic acid-modified nitrile-based copolymer latex, and more particularly, provided are a carboxylic acid-modified nitrile-based copolymer latex which includes a carboxylic acid-modified nitrile-based copolymer including a monomer-derived repeating unit; and a repeating unit derived from a monomer represented by Chemical Formula 1 below, the monomer-derived repeating unit including a conjugated diene-based monomer-derived repeating unit, an ethylenically unsaturated nitrile-based monomer-derived repeating unit, and an ethylenically unsaturated acid monomer-derived repeating unit (see description of the present invention), a method for preparing a carboxylic acid-modified nitrile-based copolymer latex, a latex composition for dip-forming including the copolymer latex, and an article formed by the composition.

Provided is a carboxylic acid-modified nitrile-based copolymer latex, and more particularly, provided are a carboxylic acid-modified nitrile-based copolymer latex which includes a carboxylic acid-modified nitrile-based copolymer including a monomer-derived repeating unit; and a repeating unit derived from a monomer represented by Chemical Formula 1 below, the monomer-derived repeating unit including a conjugated diene-based monomer-derived repeating unit, an ethylenically unsaturated nitrile-based monomer-derived repeating unit, and an ethylenically unsaturated acid monomer-derived repeating unit (see description of the present invention), a method for preparing a carboxylic acid-modified nitrile-based copolymer latex, a latex composition for dip-forming including the copolymer latex, and an article formed by the composition.

A latex of an acid-modified conjugated diene polymer including the acid-modified conjugated diene polymer obtained by modifying a conjugated diene polymer with an acid group-containing compound, in which a content of a structural unit derived from the acid group-containing compound is 0.2 to 0.7 parts by weight with respect to 100 parts by weight of the acid-modified conjugated diene polymer; a content of a water-soluble polymer in the latex is 2 parts by weight or less with respect to 100 parts by weight of the acid-modified conjugated diene polymer; when a solids content of the latex is adjusted to 60 wt %, a viscosity at 25° C. is 800 mPa.Math.s or less; and when the solids content of the latex is adjusted to 50 wt %, the viscosity at 25° C. is 300 mPa.Math.s or less.

A latex of an acid-modified conjugated diene polymer including the acid-modified conjugated diene polymer obtained by modifying a conjugated diene polymer with an acid group-containing compound, in which a content of a structural unit derived from the acid group-containing compound is 0.2 to 0.7 parts by weight with respect to 100 parts by weight of the acid-modified conjugated diene polymer; a content of a water-soluble polymer in the latex is 2 parts by weight or less with respect to 100 parts by weight of the acid-modified conjugated diene polymer; when a solids content of the latex is adjusted to 60 wt %, a viscosity at 25° C. is 800 mPa.Math.s or less; and when the solids content of the latex is adjusted to 50 wt %, the viscosity at 25° C. is 300 mPa.Math.s or less.

Polymers are created via the depolymerization of a polypropylene feedstock. The polymers can be modified/grafted with maleic anhydride. In some embodiments the polypropylene feedstock contains recycled or discarded polypropylene. In some embodiments, the polymers contain olefins within the polymer backbone, and/or a suspension of iron, titanium, and/or zinc.

Polymers are created via the depolymerization of a polypropylene feedstock. The polymers can be modified/grafted with maleic anhydride. In some embodiments the polypropylene feedstock contains recycled or discarded polypropylene. In some embodiments, the polymers contain olefins within the polymer backbone, and/or a suspension of iron, titanium, and/or zinc.

An antistatic agent for thermoplastic resins (Z) containing a block polymer (A) having a block of a hydrophobic polymer (a) and a block of a hydrophilic polymer (b) as structure units, and a C6-C18 branched alkylbenzenesulfonate (S); an antistatic resin composition (Y) containing the antistatic agent (Z) and a thermoplastic resin (E); and a molded article of the antistatic resin composition (Y).

An antistatic agent for thermoplastic resins (Z) containing a block polymer (A) having a block of a hydrophobic polymer (a) and a block of a hydrophilic polymer (b) as structure units, and a C6-C18 branched alkylbenzenesulfonate (S); an antistatic resin composition (Y) containing the antistatic agent (Z) and a thermoplastic resin (E); and a molded article of the antistatic resin composition (Y).

A method for producing a maleimide compound having a group represented by the formula (a1), the method including condensing a primary amino group in a raw material compound having the primary amino group and dicarboxylic anhydride represented by the formula (a2) to generate a group represented by the formula (a3); and heating a compound having the group represented by the formula (a3), and converting the group represented by the formula (a3) into the group represented by the formula (a1).