Recovery of components from polyester resins

Details Recovery of components from polyester resins Recovery of components from polyester resins

1996-07-26

1997-08-05

Barts, Samuel

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

562483, 562485, 568854, C07C 6760

Patent

active

056544707

ABSTRACT:
There is described a process for the depolymerization of polyethylene terephthalate into component monomers at ambient pressure. Monomer solids that deposit during cooling, as part of the recovery operation, are removed using a scraped wall heat exchanger.

REFERENCES:
patent: 2219996 (1940-10-01), Livingston
patent: 2868830 (1959-01-01), Weedman
patent: 3621506 (1971-11-01), Armstrong et al.
patent: 3836573 (1974-09-01), Schreiber et al.
patent: 4315541 (1982-02-01), Murata et al.
patent: 5051528 (1991-09-01), Naujokas et al.

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