C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/221
C22B 7/00 (2006.01) C22B 11/00 (2006.01) C22B 11/02 (2006.01) G03C 11/24 (2006.01)
Patent
CA 1238790
TITLE Recovery of Silver From Photographic Films By High Shear Conditions Abstract of the Disclosure A method for the recovery of silver from photographic film having a polyester base and a macromolecular organic polymer coating to which is adhered a light sensitives silver emulsion layer. The process includes mixing small film pieces in a hot aqueous liquid having a solids concentration level of at least 25 percent by volume. The mixture is subjected to conditions of high shear to remove the silver emulsion. The liquid containing the silver emulsion is then separated from the film pieces and the silver is recovered from the liquid. FF-6173
499973
Buser Kenneth R.
Rettig Thomas A.
Dupont Teijin Films U.s. Limited Partnership
Mccallum Brooks & Co.
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