Highly anisotropic membranes

Details Highly anisotropic membranes Highly anisotropic membranes

1980-06-25

1982-06-08

Lawrence, Evan K.

Coating processes

Foraminous product produced

Filter, sponge, or foam

427246, B05D 500

Patent

active

043339727

ABSTRACT:
The discovery that highly anisotropic membranes, e.g. with a degree of anisotropy of five can for the very first time be produced by the dry phase inversion process by a very specific combination of polymers, solvent and non-solvent, optionally along with plasticizers and modifiers, all of which separately are known in membrane technology, the polymers consisting essentially of cellulose nitrate and cellulose nitrate-cellulose acetate mixed ester polymers, the solvent being methyl formate, propylene oxide, or mixtures thereof, and the non-solvents being isopropyl alcohol, t-butyl alcohol or mixtures thereof, is disclosed.

REFERENCES:
patent: 3792135 (1974-02-01), Brown et al.
patent: 3884801 (1975-05-01), Kesting
patent: 4035459 (1977-07-01), Kesting

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-553030