公开(公告)号：US4391763A

公开(公告)日：1983-07-05

申请号：US223947

申请日：1981-01-12

申请人： Kunihiko Ueno ,  Akiyasu Ishii ,  Masazi Hukuda ,  Kazuyuki Nakayama

发明人： Kunihiko Ueno ,  Akiyasu Ishii ,  Masazi Hukuda ,  Kazuyuki Nakayama

IPC分类号： C08J3/12 ,  C08J9/26 ,  B29C23/00

CPC分类号： C08J3/12 ,  C08J2327/00

摘要： This invention relates to a compactingly processing method for the manufacture of spherical particles, having a heavier apparent specific gravity, of halogen-containing ethylene resin. In this method, 100 wt. parts of particles of the resin are mixed with 20-500 wt. parts of one or more of heat-resisting inorganic salts having particle sizes of 0.01-50.mu.. This mixture is subjected to a heat treatment in a gaseous phase at a temperature higher than the melting point of the resin, and then, the once added inorganic salt or salts is/are separated from the heat-treated intermediate products. In this way, the resin particles are subjected to a substantial compacting and size reduction.

摘要翻译： 本发明涉及一种用于制造具有较高表观比重的含卤素乙烯树脂的球形颗粒的紧密加工方法。 在该方法中， 树脂颗粒的份数与20-500重量份混合。 一种或多种具有0.01-50μm粒径的耐热无机盐的部分。 将该混合物在高于树脂熔点的温度下在气相中进行热处理，然后将一次加入的无机盐与热处理的中间产物分离。 以这种方式，树脂颗粒经受实质压实和尺寸减小。