A curable composition includes an olefin-aromatic vinyl compound-aromatic polyene copolymer satisfying conditions (1) to (4) and an additive resin, which is at least one of a hydrocarbon-based elastomer, polyphenylene ether, olefin-aromatic vinyl compound-aromatic polyene copolymerized oligomer, and aromatic polyene-based resin. (1) The number average molecular weight of the copolymer is 5000 to 100000. (2) The aromatic vinyl compound monomer has 8 to 20 carbon atoms, and the content of the unit of the monomer is 0 to 70 mass %. (3) The aromatic polyene is selected from polyenes having 5 to 20 carbon atoms and a plurality of vinyl and/or vinylene groups in the molecule, and the content of the groups is 1.5 to 20 pieces per number average molecular weight. (4) The olefin is selected from olefins having 2 to 20 carbon atoms, and the total monomer units of the olefin, aromatic vinyl compound, and aromatic polyene is 100 mass %.

A curable composition includes an olefin-aromatic vinyl compound-aromatic polyene copolymer satisfying conditions (1) to (4) and an additive resin, which is at least one of a hydrocarbon-based elastomer, polyphenylene ether, olefin-aromatic vinyl compound-aromatic polyene copolymerized oligomer, and aromatic polyene-based resin. (1) The number average molecular weight of the copolymer is 5000 to 100000. (2) The aromatic vinyl compound monomer has 8 to 20 carbon atoms, and the content of the unit of the monomer is 0 to 70 mass %. (3) The aromatic polyene is selected from polyenes having 5 to 20 carbon atoms and a plurality of vinyl and/or vinylene groups in the molecule, and the content of the groups is 1.5 to 20 pieces per number average molecular weight. (4) The olefin is selected from olefins having 2 to 20 carbon atoms, and the total monomer units of the olefin, aromatic vinyl compound, and aromatic polyene is 100 mass %.

A resin composition containing an ethylene-vinyl acetate copolymer (I) and a hydrogenated block copolymer (II), wherein the hydrogenated block copolymer (II) is a hydrogenated product of a block copolymer (P) containing a polymer block (A) containing a structural unit derived from an aromatic vinyl compound and a polymer block (B) containing 1 to 100% by mass of a structural unit (b1) derived from farnesene and 99 to 0% by mass of a structural unit (b2) derived from a conjugated diene other than farnesene, wherein the hydrogenation rate of carbon-carbon double bonds in the structural unit derived from a conjugated diene in the block copolymer (P) is 70 mol % or more, and in the resin composition, the content of the ethylene-vinyl acetate copolymer (I) is 40 to 95% by mass and the content of the hydrogenated block copolymer (II) is 5 to 60% by mass.

A resin composition containing an ethylene-vinyl acetate copolymer (I) and a hydrogenated block copolymer (II), wherein the hydrogenated block copolymer (II) is a hydrogenated product of a block copolymer (P) containing a polymer block (A) containing a structural unit derived from an aromatic vinyl compound and a polymer block (B) containing 1 to 100% by mass of a structural unit (b1) derived from farnesene and 99 to 0% by mass of a structural unit (b2) derived from a conjugated diene other than farnesene, wherein the hydrogenation rate of carbon-carbon double bonds in the structural unit derived from a conjugated diene in the block copolymer (P) is 70 mol % or more, and in the resin composition, the content of the ethylene-vinyl acetate copolymer (I) is 40 to 95% by mass and the content of the hydrogenated block copolymer (II) is 5 to 60% by mass.

An immersion-molded body, wherein: the immersion-molded body is obtained using a latex; the latex comprises a chloroprene-based block copolymer; the chloroprene-based block copolymer contains 5 to 30% by mass of a polymer block (A) and 70 to 95% by mass of a chloroprene-based polymer block (B); the polymer block (A) is derived from a monomer; when the monomer is polymerized alone, a polymer with a glass transition temperature of 80° C. or higher can be obtained; the chloroprene-based polymer block (B) includes a chloroprene monomer unit; and when the immersion-molded body is heat-treated at 130° C. for 30 minutes, a tensile strength at break of the heat-treated immersion-molded body measured in accordance with JIS K6251 is 17 MPa or more.

A thermoplastic elastomer composition and method of making the thermoplastic elastomer are disclosed. The thermoplastic elastomer may comprise a polymer blend. The polymer bland may comprise a non-crosslinked elastomer, oil, polyethylene, and anti-oxidant. The oil may be from about 15 wt. % to about 50 wt. % oil. The polyethylene may be from about 3 wt. % to about 30 wt. %. The anti-oxidant may be from about 0 to about 0.5 wt. %.

A thermoplastic elastomer composition and method of making the thermoplastic elastomer are disclosed. The thermoplastic elastomer may comprise a polymer blend. The polymer bland may comprise a non-crosslinked elastomer, oil, polyethylene, and anti-oxidant. The oil may be from about 15 wt. % to about 50 wt. % oil. The polyethylene may be from about 3 wt. % to about 30 wt. %. The anti-oxidant may be from about 0 to about 0.5 wt. %.

A thermoplastic elastomer composition and method of making the thermoplastic elastomer are disclosed. The thermoplastic elastomer may comprise a polymer blend. The polymer bland may comprise a non-crosslinked elastomer, oil, polyethylene, and anti-oxidant. The oil may be from about 15 wt. % to about 50 wt. % oil. The polyethylene may be from about 3 wt. % to about 30 wt. %. The anti-oxidant may be from about 0 to about 0.5 wt. %.

The present disclosure provides a fitment. In an embodiment, a fitment is provided and includes a top portion, a base, and a channel extending through the top portion and the base for passage of a flowable material. The fitment is composed of a polymeric composition. The polymeric composition includes (i) from 70 to 90 weight percent of a high density polyethylene (HDPE) having a density from 0.940 g/cc to 0.970 g/cc, a melt temperature, Tm, greater than 125° C., and a melt index from 1 g/10 min to 50 g/10 min; and (ii) from 30 to 10 weight percent of an olefin-based elastomer having a density from 0.860 g/cc to 0.905 g/cc, a melt index from 0.2 g/10 min to 50 g/10 min, and a Tm less than 125° C.

The present disclosure provides a fitment. In an embodiment, a fitment is provided and includes a top portion, a base, and a channel extending through the top portion and the base for passage of a flowable material. The fitment is composed of a polymeric composition. The polymeric composition includes (i) from 70 to 90 weight percent of a high density polyethylene (HDPE) having a density from 0.940 g/cc to 0.970 g/cc, a melt temperature, Tm, greater than 125° C., and a melt index from 1 g/10 min to 50 g/10 min; and (ii) from 30 to 10 weight percent of an olefin-based elastomer having a density from 0.860 g/cc to 0.905 g/cc, a melt index from 0.2 g/10 min to 50 g/10 min, and a Tm less than 125° C.