G - Physics – 03 – C
Patent
G - Physics
03
C
96/66
G03C 5/24 (1980.01)
Patent
CA 1149213
ABSTRACT OF THE DISCLOSURE A novel developer system for use in colour photography by which a developer is confectioned as a plurality of con- centrated compositions in which one first concentrated composition is a liquid composition substantially free of water including a p-phenylenediamine compound, and possibly other components of the developer such as antioxidant dissolved in an organic solvent, and a second concentrated composition is aqueous and alkaline. The two compositions have improved stability in storage and shipment and are readily mixed together with water to form the colour developer.
323552
Minnesota Mining And Manufacturing Company
Smart & Biggar
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