Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified radiation sensitive composition with color...
Patent
1995-05-19
1996-11-12
Chea, Thorl
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified radiation sensitive composition with color...
430610, 430631, 430512, 430955, G03C 138
Patent
active
055739008
ABSTRACT:
A method for dispersing a water-insoluble phase containing a hydrophobic, photographically useful compound in water or a hydrophilic colloid composition using an anionic surface active agent is disclosed, which comprises dispersing the hydrophobic, photographically useful compound by using an anionic surface active agent having a hydrophobic group and a group represented by --SO.sub.3 M or --OSO.sub.3 M (where M represents a cation) and a specific phosphorus-containing surface active compound, or, adding the anionic surface active agent for dispersion, and after the completion of dispersion further adding the specific phosphorus-containing surface active compound. According to the dispersion method of the present invention, a dispersion favored with maintenance of fine particle performance at the dispersion and free of grain growth during aged storage or generation of coarse grains or precipitated crystals can be obtained.
REFERENCES:
patent: 2870012 (1959-01-01), Godowsky et al.
patent: 4211836 (1980-07-01), Yoneyama et al.
patent: 4220711 (1980-09-01), Nakamura et al.
Fujiwara Kazuhiko
Kawanishi Naoyuki
Yasuda Tomokazu
Chea Thorl
Fuji Photo Film Co. , Ltd.
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