Silver sulphide sol with ultrafine particle size

Details Silver sulphide sol with ultrafine particle size Silver sulphide sol with ultrafine particle size

1989-10-23

1992-12-01

Stoll, Robert L.

Compositions

Light transmission modifying compositions

Inorganic crystalline solid

252588, 2523131, 430603, 430617, 430921, 359361, G02B 520, G02B 522, F21V 904, G03C 106

Patent

active

051678756

ABSTRACT:
An aqueous silver sulfide sol is prepared which has an absorption spectrum such that its optical density at 360 nm is at least 100 times its optical density at 700 nm. The sol is ultrafine in particle size and is useful for the chemical sensitization of silver halide emulsions and for the preparation of development layers for the silver complex diffusion transfer copying process or the production of optical filters.

REFERENCES:
patent: 3655412 (1972-04-01), Kumai et al.
patent: 3674703 (1972-07-01), Moll et al.
patent: 4897343 (1990-01-01), Ikeda et al.
patent: 4942119 (1990-07-01), Ozin et al.
patent: 5024923 (1991-06-01), Suzuki et al.
Mumaw, Photographic Science and Engineering, vol. 24, No. 2, pp. 77-83 (1980).

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