Rigid compositions based on polyvinyl chloride containing an aliphatic polyol as viscosity decreaser and the use of these compositions for the preparation of rigid articles by injection moulding

摘要

The compositions contain di-trimethylolpropane as a viscosity reducer in a proportion of 6 to 9 parts by weight per 100 parts of polyvinyl chloride. They advantageously contain a lead compound as primary heat stabilizer and a neutral lead carboxylate derived from C8-C30 fatty acids as lubricant. The compositions are particularly suitable for the manufacture of rigid articles such as housings for office processing equipment and for radio and television sets and gratings for cooling towers, by injection moulding.