Process of making polyvinylidene fluoride membranes

Details Process of making polyvinylidene fluoride membranes Process of making polyvinylidene fluoride membranes

1995-03-14

1996-10-15

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

264203, 2642091, 264233, 264234, B29C 6720, D01D 5247

Patent

active

055651534

ABSTRACT:
Multi-step methods of making a non-skinned isotropic microfiltration membrane, the common steps of which include heating a PVDF-type casting dope above its cloudpoint, forming a film, and immersing the film in a gelation bath.

REFERENCES:
patent: 4203847 (1980-05-01), Grandine, II
patent: 4203848 (1980-05-01), Grandine, II
patent: 4384047 (1983-05-01), Benzinger et al.
patent: 4943373 (1990-07-01), Onishi et al.

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