公开(公告)号：WO1994021354A1

公开(公告)日：1994-09-29

申请号：PCT/US1994003136

申请日：1994-03-23

Applicant: E.I. DU PONT DE NEMOURS AND COMPANY

Inventor： E.I. DU PONT DE NEMOURS AND COMPANY ,  BRANDON, Steven, Craig ,  SEGARS, Roy, Jr.

IPC: B01D39/20

CPC classification number: B01D67/0069 ,  B01D39/1661 ,  B01D39/2034 ,  B01D67/0041 ,  B01D67/0046 ,  B01D69/14 ,  B01D71/02 ,  B01D2239/0258 ,  B01D2239/0464 ,  B01D2239/0478 ,  B01D2239/1216 ,  B01D2239/1241 ,  B01D2323/46 ,  B01D2323/48

Abstract: The invention is directed to a method for improving the filtration efficiency of an altered substrate filter element comprising a porous solid substrate, one side of which is impregnated with sintered solid particles, by treating the solids-oxide-impregnated side with an aqueous suspension of small non-agglomerated solid particles which are deposited upon the sintered solid particles.

Abstract translation: 本发明涉及一种改进的底物过滤元件的过滤效率的方法，该方法包括多孔固体基质，其一侧浸渍有烧结的固体颗粒，通过用小的水悬浮液处理固体氧化物浸渍的一侧 沉积在烧结固体颗粒上的非团聚固体颗粒。