PURPOSE: To provide the titled compsn. which gives highly electrically conductive moldings having excellent mechanical strength, a high heat distortion temp., less heat shrinkability and good surface texture, by blending electrically conductive carbon black with a specified graft copolymer.
CONSTITUTION: 99W60wt% monomer mixture consisting of 80W100wt% vinyl chloride and 20W0wt% monomer (e.g. vinyl acetate) copolymerizable therewith is graft-polymerized onto 1W40wt% copolymer composed of 5W75wt% methyl methacrylate and 95W25wt% ethylene to obtain a graft copolymer having a specific viscosity of 0.14W0.31. Not more than 40pts.wt. electrically conductive carbon black having an oil absorption of 300W400ml/100g and a surface area of 800m2/g or above is blended with 100pts.wt. said graft copolymer.
EFFECT: Moldings having excellent flow characteristics, a low volume resistance and a high softening temp. and suitable for use in the production of video disc, computer disc, etc. can be obtd.
NAKAMURA TAMOTSU
ARAI TOYOICHI
