| abstract |
(57) [Abstract] [Purpose] A styrene block copolymer having a syndiotactic structure, which is suitable as a material for composite materials and multilayer materials and has excellent compatibilizing ability and adhesive ability, a resin composition using the same, and Providing multilayer materials. [Structure] Reduced viscosity consisting of a styrene-based weight segment having a high degree of syndiotactic structure and a styrene-based polymer segment containing a hetero atom of 10 −4 to 10 mol% (135 ° C. in TCB, 0.05 g / Styrene block copolymer having a concentration of 0.01 to 20 deciliter / g; styrene monomer containing a hetero atom after polymerizing the styrene monomer using a specific catalyst. Is added and the polymerization reaction is continued to produce the styrene block copolymer; A resin composition containing the styrene block copolymer and a thermoplastic resin, an inorganic filler or an organic filler; a multilayer material having at least one layer comprising the styrene block copolymer or the resin composition. is there. |