G - Physics – 03 – C
Patent
G - Physics
03
C
G03C 5/38 (2006.01) B01F 3/18 (2006.01) G03C 5/26 (2006.01) G03C 5/44 (2006.01) G03C 7/42 (2006.01)
Patent
CA 2106385
2106385 9315437 PCTABS00024 A method for making flowable alkaline thiosulfate, flowable alkaline sulfite, or a combination of the two, by blending an alkaline thiosulfate, an alkaline sulfite, or a combination of the two, with an alkali metal arylsulfonate.formaldehyde in an amount effective to render the alkaline thiosulfate, the alkaline sulfite, or the combination freely flowable, and the product of this method. It has been found that the product of this method, such as freely flowable ammonium thiosulfate powder mixture, can be stored in a freely flowable condition for extended periods of time and can be dissolved into solution readily to form a clear non-turbid solution. The freely flowable ammonium thiosulfate powdered mixture of the present invention is particularly useful as a photographic fixative and bleach fixative for processing photographic elements.
Kim Hongzoon
Pfeiffer Charles J.
Fuji Hunt Photographic Chemicals Inc.
Fuji Hunt Photographic Chemicals Ltd.
Kim Hongzoon
Pfeiffer Charles J.
Riches Mckenzie & Herbert Llp
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