| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a resin for cleaning which is effective to clean a residual preceding resin in a molding machine at the time of resin replacement or color changeover in molding process of a transparent resin, and a resin composition for cleaning using the same. <P>SOLUTION: The resin for cleaning comprises a copolymer of a vinyl aromatic hydrocarbon and a conjugated diene, wherein the copolymer has a vinyl aromatic hydrocarbon content of 80-97 mass% and a conjugated diene content of 20-3 mass%, and has a number average molecular weight of 30,000-500,000 wherein a ratio of molecular weight of≥200,000 is 15-70 mass%, as measured by gel permeation chromatography (GPC). <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
