Composition for recovering metals and process for using same

Details Composition for recovering metals and process for using same Composition for recovering metals and process for using same

1992-03-23

1994-02-15

Rosenberg, Peter D.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

75713, 423 27, 521 44, 521 465, B03B 100

Patent

active

052864634

ABSTRACT:
A novel composition for use in reducing and recovering metals, such as silver, and for use in stripping adhesive polymer layers from various polymer bases, such as polyester, and processes for using same are provided. The composition and variations thereof can be useful in separating an adhesive polymeric layer from the film for recovery of either. The composition comprises a reducing sugar/alkaline solution that is particularly useful for recovering silver from polyester photographic film where a silver halide light-sensitive emulsion layer is adhered to the polyester film by a polymeric adhesive resin, such as resins containing copolymers of polyvinylidene chloride and polyvinyl chloride. Processes for separation and recovery are also disclosed and claimed.

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