SUSTAINED-RELEASABLE 4-METHYL-1-PENTENE COPOLYMER COMPOSITION AND ITS USE

摘要

PROBLEM TO BE SOLVED: To provide a sustained-releasable 4-methyl-1-pentene copolymer composition excellent in heat resistance and its use. SOLUTION: This copolymer composition contains (A) a 4-methyl-1-pentene copolymer which is a copolymer of 4-methyl-1-pentene and at least oneα-olefin selected from among 8-20Cα-olefins and contains at least 85 wt.% repeating units derived from 4-methyl-1-pentene and (B) antihistamine in an amount of 1-30 pts.wt. based on 100 pts.wt. ingredient A. A sustained-release 4-methyl-1- pentene copolymer composition molding is prepared from the copolymer composition.