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AssigneeDenka Company Limited
InventorsWataru NISHINO, Ibuki SHIMOTOMAI, Yutaka SAITO, Yushi KUMAGAI
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Provided are a chloroprene-based block copolymer, a latex, a latex composition, and a rubber composition with which it is possible to obtain a molded body having excellent tensile strength at break and tensile elongation at break even with use of less or no vulcanizing agent or vulcanization accelerator. A chloroprene-based block copolymer including 30 to 60% by mass of a polymer block (A) derived from a monomer that can yield a polymer with a glass transition temperature of 80° C. or higher when homopolymerized and 40 to 70% by mass of a chloroprene-based polymer block (B) having a chloroprene monomer unit and a polyfunctional monomer unit.
A chloroprene-based block copolymer comprising 30 to 60% by mass of a polymer block (A) derived from a monomer that can yield a polymer with a glass transition temperature of 80° C. or higher when homopolymerized and 40 to 70% by mass of a chloroprene-based polymer block (B) having a chloroprene monomer unit and a polyfunctional monomer unit.
A latex composition comprising 100 parts by mass of the latex of claim 9 and 0.5 to 5.0 parts by mass of an anti-aging agent.
Dependencies are inferred from the claim text.