Coating processes – Foraminous product produced – Filter – sponge – or foam
Patent
1986-07-21
1987-09-22
Lawrence, Evan K.
Coating processes
Foraminous product produced
Filter, sponge, or foam
427377, 4274344, B05D 500
Patent
active
046954830
ABSTRACT:
Semipermeable composite membranes which comprise an interpenetrating polymer network may be prepared by reacting polyethylene glycol with a toluene diisocyanate to form an isocyanate-capped polyether, thereafter admixing the isocyanate-capped polyether with a heterocyclic nitrogen-containing compound to form an interpenetrating polymer network membrane-forming composition, forming a film of the composition on a porous support backing material and curing the resultant composite in a hydrous atmosphere to generate an amine-capped polymer, and subsequently reacting a portion of the isocyanate groups present to form a substituted polyurea which will physically enter the heterocyclic nitrogen-containing compound in the membrane.
REFERENCES:
patent: 3526588 (1970-09-01), Michaels et al.
patent: 3661634 (1972-05-01), Riley et al.
patent: 3767737 (1973-10-01), Lundstrom
patent: 3892655 (1975-07-01), Hickson
patent: 3892665 (1975-07-01), Steigelmann et al.
patent: 3951789 (1976-04-01), Lee et al.
patent: 4005012 (1977-01-01), Wrasidlo
patent: 4132824 (1979-01-01), Kimura et al.
patent: 4220535 (1980-09-01), Leonard
patent: 4243701 (1981-01-01), Riley et al.
patent: 4262041 (1981-04-01), Eguchi et al.
patent: 4272378 (1981-06-01), Sano et al.
Swedo Raymond J.
Zupancic Joseph J.
Allied Corporation
Lawrence Evan K.
McBride Thomas K.
Nelson Raymond H.
Spears Jr. John F.
LandOfFree
Method for the preparation of composite membranes based on inter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for the preparation of composite membranes based on inter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the preparation of composite membranes based on inter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2058043