| 摘要 |
PURPOSE:To provide a composition free from sweating phenomenon, and having excellent moldability and high mechanical strength at a low temperature, by adding a specific white mineral oil to a styrene polymer. CONSTITUTION:(A) 100pts.wt. of a styrene polymer is compounded with (B) 0.1-10pts.wt. of a white mineral oil having a pour point of <=-30 deg.C and initial boiling point of >=200 deg.C under vacuum of 10mmHg. The component B is preferably added to the monomer in the polymerization of the component A. The moldability of the composition can be further improved by using an oil containing >=28%, preferably 30-40% naphthene component (Cn) by n-d-M ring analysis, as the component B.
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