| 摘要 |
PURPOSE:To improve releasability after molding, without lowering the thermal stability, mechanical strength, etc. of resins, by incorporating a higher fatty acid (metallic salt) and low-MW polyethylene with styrene resin in specific wt. ratios. CONSTITUTION:0.02-2.4wt% about 12-22C higher fatty acid (e.g., stearic or palmitic acid) and/or its metallic salts (B) and 0.02-2.4wt% low-MW polyethylene (C) with a MW of 1,000-20,000 are incorporated in a styrene resin such as polystyrene, polychlorostyrene, or styrene/butadiene rubber to attain the total amt. of components B and C of 0.1-3wt%, yielding the intended styrene resin compsn. Said compsn. shows markedly improved releasability as compared with the case where component B or C is added solely. |
