Preparation of asymmetric membranes by the solvent extraction of

Details Preparation of asymmetric membranes by the solvent extraction of Preparation of asymmetric membranes by the solvent extraction of

1987-06-29

1989-09-19

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

21050036, 264 41, 521143, 521139, 521134, 521140, 521 62, C08J 926

Patent

active

048682225

ABSTRACT:
Asymmetric membranes are prepared by selectively treating a major surface of an incompatible polymer blend prepared by melt blending having at least one extractable polymer component and then contacting the polymer blend with a solvent to extract the extractable polymer component. The treated surface becomes the dense layer of the membrane. The major surface is treated by crosslinking, by contacting the surface with a crosslinking agent which is subsequently cured, or by contacting the surface with an agent which reacts with groups on the surface and imparts a polar character to it.

REFERENCES:
patent: 3375208 (1968-03-01), Duddy
patent: 3544489 (1966-06-01), Dowbenko et al.
patent: 3615024 (1968-08-01), Michaels
patent: 3623670 (1986-11-01), Mutoh et al.
patent: 3709774 (1970-05-01), Kimura
patent: 3763055 (1973-10-01), White et al.
patent: 3816170 (1974-06-01), Mudde
patent: 3843570 (1974-10-01), Murayama
patent: 3992495 (1976-11-01), Sano et al.
patent: 4026977 (1977-05-01), Bourganel
patent: 4046843 (1977-09-01), Sano et al.
patent: 4100238 (1978-07-01), Shinomura
patent: 4705809 (1987-11-01), Dighten et al.

Affiliated with

Also associated with

Rating

Preparation of asymmetric membranes by the solvent extraction of does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of asymmetric membranes by the solvent extraction of, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of asymmetric membranes by the solvent extraction of will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-369105