公开(公告)号：WO1988010460A2

公开(公告)日：1988-12-29

申请号：PCT/US1988001845

申请日：1988-05-31

Applicant: MILLIPORE CORPORATION

Inventor： MILLIPORE CORPORATION ,  DOURDEVILLE, Theodore, A. ,  TRUMPER, David, L.

IPC: G05D07/00

CPC classification number: G01N30/34 ,  F04B49/065 ,  G01N30/32

Abstract: An inner short-term pressure sensitive feedback loop is combined with an outer long-term volumetric delivery feedback loop to supply a substantially constant volumetric flow of mixed fluids to a load. The invention has particular utility in the controlled delivery of solvents for liquid chromatography.

公开(公告)号：WO1986002282A1

公开(公告)日：1986-04-24

申请号：PCT/US1985001936

申请日：1985-10-08

Applicant: MILLIPORE CORPORATION

Inventor： MILLIPORE CORPORATION ,  LOPATIN, George ,  YEN, Larry, Y.

IPC: B01D13/04

CPC classification number: C08J9/28 ,  B01D67/003 ,  B01D67/0095 ,  B01D71/26 ,  B01D2323/12 ,  B01D2323/18 ,  B01D2325/30 ,  C08J2201/03 ,  C08J2201/052 ,  C08J2201/0543 ,  C08J2201/0546 ,  C08J2323/06

Abstract: Microporous membranes and methods for producing such membranes from ultrahigh molecular weight polyethylene. The method employs extrusion of a solution of UHMW-PE and porogen through a forming die followed by thermal phase separation of polymer and porogen. Microporous structures are created by removing porogen. Microporous membranes produced include membranes with good permeability to air and water making them particularly useful as filtration media and water-resistant breathable membranes.