Highly porous polyvinylidene difluoride membranes

Details Highly porous polyvinylidene difluoride membranes Highly porous polyvinylidene difluoride membranes

1998-05-18

2000-11-14

Copenheaver, Blaine

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

210490, 21050023, 21050027, 264 41, 264216, 427244, 427245, 4283155, 4283157, 428398, B32B 108, B32B 326

Patent

active

061467472

ABSTRACT:
The present invention relates to the field synthetic polymeric membrane materials formed from casting polyvinylidene difluoride (PVDF) polymer solutions and/or dispersions. Membranes formed in accordance with the present invention are all highly porous. Both internally isotropic membranes and highly asymmetric PVDF membranes are disclosed. Membranes of the invention may be hydrophobic or hydrophilic. The membranes of the invention are useful in a variety of microfiltration and ultrathin applications.

REFERENCES:
patent: 3615024 (1971-10-01), Michaels
patent: 4203848 (1980-05-01), Grandine, II
patent: 4384047 (1983-05-01), Benzinger et al.
patent: 4629563 (1986-12-01), Wrasidlo
patent: 4666607 (1987-05-01), Josefiak et al.
patent: 4774039 (1988-09-01), Wrasidlo
patent: 4774132 (1988-09-01), Joffee et al.
patent: 4798847 (1989-01-01), Roesink et al.
patent: 4933081 (1990-06-01), Sasaki et al.
patent: 5019260 (1991-05-01), Gsell et al.
patent: 5171445 (1992-12-01), Zepf
patent: 5188734 (1993-02-01), Zepf
patent: 5282971 (1994-02-01), Degen et al.
patent: 5514461 (1996-05-01), Meguro et al.
patent: 5626805 (1997-05-01), Meguro et al.
patent: 5834107 (1998-11-01), Wang et al.
Patent Abstracts of Japan; Publication No. 06296836; Published Oct. 25, 1994; Applicant: Asahi Chem Inc. Co. Ltd.

Affiliated with

Also associated with

Rating

Highly porous polyvinylidene difluoride membranes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Highly porous polyvinylidene difluoride membranes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Highly porous polyvinylidene difluoride membranes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2063111