Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Process of treating scrap or waste product containing solid...
Patent
1997-09-30
1999-06-15
Seidleck, James J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Process of treating scrap or waste product containing solid...
521 485, 5283081, 528491, 528495, 528502R, C08J 1110
Patent
active
059122757
ABSTRACT:
Polyester is depolymerized by methanolysis and methanol is recovered in a process that uses methyl benzoate and/or p-methyltoluate as an azeotropic agent while the methanol is present.
REFERENCES:
patent: 2884443 (1959-04-01), Siggel et al.
patent: 5051528 (1991-09-01), Naujokas et al.
patent: 5391263 (1995-02-01), Hepner et al.
patent: 5393916 (1995-02-01), Gamble et al.
patent: 5504122 (1996-04-01), Michel et al.
Hall Stephen Dana
Hepner Richard Redfearn
Michel Robert Everett
Wheatcraft, Jr. Donald Richard
Williamson George Malcolm
Asinovsky Olga
E. I. Du Pont de Nemours and Company
Seidleck James J.
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