Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Process of treating scrap or waste product containing solid...
Patent
1993-03-22
1994-11-22
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Process of treating scrap or waste product containing solid...
521 405, 521 46, 521 48, 521 485, C08J 1104, B03B 100
Patent
active
053669983
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.
REFERENCES:
patent: 1350157 (1920-08-01), Horton
patent: 1448475 (1923-03-01), Weisberg
patent: 1637990 (1927-08-01), Ellis et al.
patent: 2503104 (1950-04-01), Farber
patent: 3047435 (1962-07-01), Wemple
patent: 3503904 (1970-03-01), Dietz et al.
patent: 3647422 (1972-03-01), Wainer
patent: 3649250 (1972-03-01), Dorenfeld et al.
patent: 3652466 (1972-03-01), Hittel et al.
patent: 3873314 (1975-03-01), Woo et al.
patent: 3928253 (1975-12-01), Thornton et al.
patent: 4324705 (1982-04-01), Seto et al.
patent: 4392889 (1983-07-01), Grout
patent: 4585561 (1986-04-01), Zlokarnik et al.
patent: 4602046 (1986-07-01), Buser et al.
patent: 4612057 (1986-09-01), Buser et al.
patent: 4799954 (1989-01-01), Hochberg
patent: 4828717 (1989-05-01), Deleeuw et al.
patent: 5064466 (1991-11-01), Hilton
patent: 5120768 (1992-06-01), Sisson
Item 20130, vol. 201, Jan. 1981, p. 28, Havant, Hampshire, GB, Disclosed by J. R. Celland et al., Silver Recovery and Polyester Recycling from Photographic Film Scrap.
Item 21524, vol. 215, Mar. 1982, p. 65, Havant, Hampshire, GB, Disclosed by P. J. Delmore et al., Silver Recovery from Silver Halide Emulsion Wastes.
Item 21231, Research Disclosure, Dec. 1981, Separation of Polyvinylidene Chloride Copolymer Coatings from Oriented Polyester Substrates.
Toyoaki, Method for Recovering Silver, Patent Abstracts of Japan, JP61034125, Feb. 18, 1986.
Asinovsky Olga
Michl Paul R.
Partek, Inc.
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