Dialysis membrane made of cellulose acetate

Details Dialysis membrane made of cellulose acetate Dialysis membrane made of cellulose acetate

1993-05-19

1995-04-04

Dawson, Robert A.

Liquid purification or separation

Filter

Material

21050029, 2105003, 21050031, 21050032, 264199, 264561, 264200, 428298, B01D 3321

Patent

active

054034850

ABSTRACT:
A dialysis membrane in the form of a hollow fiber with a continuous internal cavity is made of cellulose acetate or a cellulose acetate derivative. The hollow fiber is made by using a gas to form the internal hollow cavity. A dialysis membrane in the form of a hollow fiber with a continuous hollow cavity may be made in a process using a spinning solution containing an organic carboxylic acid. Modification agents can be added to the solution and the solution extruded through a spinneret suitable for manufacturing hollow fibers, while an internal medium is introduced simultaneously into the internal cavity of the forming hollow fiber. The precipitation of the dialysis membrane thus formed and an ordinary further aftertreatment take place subsequently in a precipitation bath. The hollow fiber is made by using a gas as the internal medium to form the internal cavity.

REFERENCES:
patent: 3546209 (1970-12-01), Lipps
patent: 3888771 (1975-06-01), Isuge et al.
patent: 4035459 (1977-07-01), Kesting et al.
patent: 4234431 (1980-11-01), Mishiro et al.
patent: 4276173 (1981-01-01), Kell et al.
patent: 4342711 (1982-08-01), Joh et al.
patent: 4385094 (1983-05-01), Tanaka et al.
patent: 4444716 (1984-04-01), Aoyagi et al.
patent: 4535028 (1985-08-01), Yokogi et al.
patent: 4543221 (1985-09-01), Chen et al.
patent: 4741927 (1988-05-01), Pelger et al.
patent: 4772393 (1988-09-01), Pelger et al.
patent: 4822540 (1989-04-01), Manabe et al.
patent: 4834882 (1989-05-01), Kataoka et al.
patent: 4919809 (1990-04-01), Yamamoto et al.
patent: 4925534 (1990-05-01), Kataoka et al.
patent: 5084349 (1992-01-01), Sasaki et al.
patent: 5192440 (1993-03-01), von Sengbusch

Affiliated with

Also associated with

Rating

Dialysis membrane made of cellulose acetate does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dialysis membrane made of cellulose acetate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dialysis membrane made of cellulose acetate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2378944