Depolymerization process

Details Depolymerization process Depolymerization process

1993-08-11

1995-01-31

Prescott, Arthur C.

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

Organic compounds

Carboxylic acids and salts thereof

562542, 481275, 48197R, 210180, 210181, 210761, 25218311, 570101, 585 6, 585801, 585241, C07C 100

Patent

active

053860551

ABSTRACT:
A process for depolymerizing polymers by selective, partial oxidation at supercritical or near supercritical conditions for water and wherein supercritical water or water near supercritical conditions is used as a solvent and reforming agent, is used to produce relatively high yields of the monomers originally used to produce the polymers. The invention provides an environmentally friendly process for recycling polymeric waste materials to generate valuable polymer feedstock in a closed oxidation process which is free of hazardous stack emissions. The polymers which can be recycled in accordance with the process can include typical amounts of conventional additive and other impurities without significantly affecting the overall conversion.

REFERENCES:
patent: 4031192 (1977-06-01), Hafeli
patent: 4543190 (1985-09-01), Modell
patent: 5136111 (1992-08-01), Chum et al.
patent: 5216149 (1993-06-01), Evans et al.
"Catalytic Selective Oxidation"-ACS Symposium Series 523, S. Ted Oyama, Editor, and Joe W. Hightower, Editor, Aug. 23-28, 1992.

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