| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealing member having proper flexibility and excellent sealing properties, hardly generating hydrogen chloride and dioxins at the time of combustion, hardly causing migration of a plasticizer and further having excellent recyclability and weather resistance. SOLUTION: This sealing member has (I) a rubber component layer formed by copolymerizing a monomer mixture comprising an acrylic acid ester and a polyfunctional monomer, and (II) a thermoplastic resin component layer formed by copolymerizing a monomer mixture comprising a methacrylic acid ester and other monomers, and is obtained by thermoforming multilayered structural polymer particles satisfying the following conditions (1) to (3): (1) the number average molecular weight of the thermoplastic resin component constituting the most outer layer is <=30,000; (2) the weight ratio of the layer (I) to the layer (II) is (30/70)-(90/10); and (3) the average particle diameter is <=150 nm. |
