Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Process of treating scrap or waste product containing solid...
Patent
1992-11-25
1994-08-23
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, C08J 1104
Patent
active
053408390
ABSTRACT:
A method is provided for salvaging organic thermoplastic values from discarded shaped organic thermoplastic substrate which has been surface treated with a protective or decorative organic coating can be salvaged and recycled. The discarded shaped organic thermoplastic substrate, such as a polycarbonate substrate can be granulated, treated with an aqueous alkaline solution which can contain a water miscible organic solvent, such as methanol and thereafter washed until neutral and dried.
REFERENCES:
patent: 4212774 (1980-07-01), Idel
patent: 4602046 (1986-07-01), Buser et al.
patent: 4619706 (1986-10-01), Squires et al.
Publication-Chemical Changes in Engineering Thermoplastics, D. A. Bolon and P. C. Irwin-Makromol. Chem. Marcromol. Symp. 57, pp. 227-234 (1992).
Based on information and belief, vapor deposited aluminum on polycarbonate in the form of compact disks have been processed with aqueous alkali hydroxide solutions to effect the removal of the vapor deposited aluminum from the surface of the polycarbonate more than one year prior to Sep. 24, 1992.-W. A. Teoli, Attorney of Record.
Bolon Donald A.
Gillette Gregory R.
Irwin Patricia C.
Shenian Popkin
Asinovsky Olga
General Electric Company
Michl Paul R.
Pittman William H.
Teoli William A.
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