Membranes and their manufacture

Details Membranes and their manufacture Membranes and their manufacture

2002-06-26

2008-08-05

Theisen, Mary Lynn F (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

C528S125000, C528S128000

Reexamination Certificate

active

07407609

ABSTRACT:
Membranes comprising an aromatic ether ketone polymer (e.g. polyetherketone) in sheet or hollow fibre form are made by preparing at least a 12 wt % solution of the polymer in a solvent which is chemically inert to the polymer (e.g. concentrated sulphuric acid); forming a film of the solution in sheet or hollow form; and contacting the film with a non-solvent (e.g. more dilute sulphuric acid or acetic acid) thereby to precipitate the film.

REFERENCES:
patent: 4714725 (1987-12-01), Hendy et al.
patent: 4992485 (1991-02-01), Koo et al.
patent: 5997741 (1999-12-01), Shimoda et al.
patent: 6017455 (2000-01-01), Shimoda et al.
patent: 0 382 356 (1990-08-01), None
patent: 0 499 831 (1992-08-01), None
patent: WO 95 15808 (1995-06-01), None
patent: WO 95 15809 (1995-06-01), None

Affiliated with

Also associated with

Rating

Membranes and their manufacture does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Membranes and their manufacture, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Membranes and their manufacture will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4000674