公开(公告)号：US3980612A

公开(公告)日：1976-09-14

申请号：US567412

申请日：1975-04-11

申请人： Subhash Vishnu Gangal

发明人： Subhash Vishnu Gangal

IPC分类号： C08L27/12 ,  C08J3/12 ,  C08J3/16 ,  C08J3/20 ,  C08L1/00 ,  C08L27/00 ,  C08K3/10

CPC分类号： C08J3/12 ,  C08J2327/12

摘要： The agglomeration of finely-divided granular tetrafluoroethylene polymer particles to produce agglomerated particles having improved flow properties is carried out by agitating the finely-divided particles in an aqueous dispersion containing a substantially water-immiscible organic liquid. The finely-divided particles can first be blended with particulate metal filler material and the blend agglomerated. The presence of a small amount of an aqueous dispersion of polytetrafluoroethylene prepared by the aqueous dispersion method, while agitating the aqueous dispersion of the blend of the filler material and the finely-divided tetrafluoroethylene polymer, effectively reduces loss of filler during the agglomeration procedure.

摘要翻译： 通过在含有基本上与水不混溶的有机液体的水性分散体中搅拌细碎颗粒来进行细碎颗粒状四氟乙烯聚合物颗粒的聚集以产生具有改善的流动性的凝聚颗粒。 细碎的颗粒可以首先与颗粒状金属填料材料共混并且共混物凝聚。 通过水分散法制备的少量聚四氟乙烯水分散体在搅拌填料和细分四氟乙烯聚合物的共混物的水分散液的同时有效地减少了聚集过程中填料的损失。