To improve degrease in impact strength of recycled products from a styrenic resin and an olefinic resin, and enabling the easy selective recycling of the above resin products.
This compatible agent for recycling is a graft polymer obtained by polymerizing an aromatic vinyl with an unsaturated nitrile in the presence of a hydrogenated isoprene-base copolymer, having (1) ≥10 wt.% grafting ratio of the aromatic vinyl and unsaturated nitrile to the hydrogenated isoprene-based copolymer in the above graft polymer and (2) 10-50 wt.% unsaturated nitrile content in a not grafted free aromatic vinyl-unsaturated nitrile copolymer extracted from the above graft polymer by using acetone as a solvent and 10,000-500,000 weight average-molecular weight of the above copolymer.
TOYOTAKA TATSUJI
FUJIWARA TAKAYOSHI
