Coating process employs surfactants

Details Coating process employs surfactants Coating process employs surfactants

1982-12-14

1985-04-02

Kittle, John E.

Coating processes

Vacuum utilized prior to or during coating

Organic base

427346, 430631, 430636, 430637, B05D 300, G03C 176

Patent

active

045087644

ABSTRACT:
Incorporation of a fluorocarbon and a hydrocarbon surfactant in a photographic silver halide emulsion for high speed slide flow coating increases coating latitude by reducing a disruptive standing wave and allowing broader vacuum pressure ranges. The increased coating latitude is particularly advantageous at coating speeds above 100 meters per minute when the emulsion contains from 0.02 to 2 g of fluorocarbon surfactant per 1.5 moles of silver halide.

REFERENCES:
patent: Re29255 (1977-06-01), McDowell
patent: 2761791 (1956-09-01), Russell
patent: 3666478 (1972-05-01), Groh et al.
patent: 3754924 (1973-08-01), De Geest et al.
patent: 3775126 (1973-11-01), Babbitt
patent: 3928678 (1975-12-01), Jackson
patent: 4272615 (1981-06-01), Yoneyama et al.
patent: 4292402 (1981-09-01), Pollet
patent: 4299188 (1981-11-01), Isayama et al.
patent: 4367283 (1983-01-01), Nakayama

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