| abstract |
A detergent resin composition capable of very effectively deterging the inside of molding machines in a small quantity of its use and in a short time at the time of change-over of chlorine-containing resins inside the machines is provided, which composition is obtained by blending 50 to 95% by weight of a polystyrene resin, 0.1 to 15% by weight of a polymethyl methacrylate, 2 to 30% by weight of a neutral salt of a sulfonic acid and 0.1 to 10% by weight of basic magnesium carbonate, magnesium hydroxide, aluminum hydroxide, zinc carbonate or a mixture thereof, the respective proportions being based upon the weight of the composition. |