Production manner null of vinyl chloride resin for granulation condition pe - strike processing

摘要

PURPOSE:To obtain the title resin of high bulk density having excellent powder characteristics by compression of a vinyl chloride resin for paste processing or its mixture with a liquid caking agent under a specified pressure, followed by grinding to a specified granular size and then classifying. CONSTITUTION:A vinyl chloride resin for paste processing or its mixture with a liquid caking agent such as dibutyl phthalate or epoxidized soybean oil is compressed to 2-100kg/cm2G using e.g. a press roll. The resulting compression molding product is group so as to come to =5mm in the maximum grain diameter using a grinder such as a pin mill or hammer mill, and the ground product formed is then classified using a sieve etc., thus obtaining the objective resin with a grain size of =20mu.