Liquid purification or separation – Recirculation – Serially connected distinct treating or storage units
Patent
1992-08-12
1993-09-28
Sever, Frank
Liquid purification or separation
Recirculation
Serially connected distinct treating or storage units
2102572, 21032164, 21032165, B01D 6118
Patent
active
052484181
ABSTRACT:
Photographic emulsions, particularly those produced by a silver halide reaction, are concentrated and, optionally, washed in a 2-stage ultrafiltration system. The system includes a spiral wound ultrafiltration module and a plate and frame ultrafiltration module. Serial use of these two ultrafiltration systems permits the viscosity of the resulting emulsion to be increased, at commercial scale production levels, to a level suitable for curtain coating photographic substrates.
REFERENCES:
patent: 2495918 (1950-01-01), Bolton
patent: 2611490 (1952-09-01), Robinson
patent: 3782953 (1974-01-01), Maley
patent: 4042575 (1977-08-01), Eustache
patent: 4083780 (1978-04-01), Call
patent: 4332887 (1982-06-01), Gerber
patent: 4334012 (1982-06-01), Mignot
patent: 4336328 (1982-06-01), Brown
patent: 4758505 (1988-07-01), Hoffman
patent: 4792401 (1988-12-01), Truex et al.
patent: 4797354 (1989-01-01), Saitou et al.
patent: 4816290 (1989-03-01), Heki et al.
patent: 4846976 (1989-07-01), Ford
patent: 4892660 (1990-01-01), Sweet
Research Disclosure-Jul. 1975.
Eastman Kodak Company
Sever Frank
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