| 摘要 |
PROBLEM TO BE SOLVED: To obtain a thermoplastic resin compsn. for cleaning the inside of a molding machine having an excellent cleaning capability by compounding a thermoplastic resin with a methyl methacrylate-styrene copolymer. SOLUTION: This compsn. is prepd. by compounding a thermoplastic resin with a methyl methacrylate-styrene copolymer, the content of the copolymer pref. being 1-30 wt.% of the compsn. The compsn. may further contain a metal salt of an alkylbenzenesulfonic acid, and in that case, the compsn. pref. contains 0.5-10 wt.% copolymer and 1-30 wt.% metal salt. The mol.wt. of the copolymer is pref. 10,000-150,000. Pref., the metal salt has a 6-20C alkyl group and is a salt of Na, K, Ca, etc. |
