Process for recycling of supported or contaminated PVC

Details Process for recycling of supported or contaminated PVC Process for recycling of supported or contaminated PVC

1992-04-21

1993-08-03

Dawson, Robert A.

Liquid purification or separation

Processes

Separating

210737, 210738, 210766, 210774, 210781, 209 3, 209172, 521 465, 525225, 526209, B01P 1102

Patent

active

052326063

ABSTRACT:
A method is provided for recovering PVC from a material including PVC and one or more non-PVC components, in which the material is mixed with a sufficient amount of a plasticizer at an effective temperature, preferably in the range of 100.degree.-200.degree. C., to give a PVC: plasticizer ratio such that the PVC and plasticizer form a mixture which is a liquid at that temperature so that the liquid PVC/plasticizer can be separated from the non-PVC component or components.

REFERENCES:
patent: 3335966 (1967-08-01), Haveman
patent: 3736271 (1970-12-01), Schutzeet
patent: 3836486 (1974-09-01), Hafner
patent: 4038219 (1977-07-01), Boehm et al.
patent: 4071479 (1978-01-01), Broyde et al.
patent: 4578184 (1986-03-01), Rasmussen
patent: 4746422 (1988-05-01), Grimm

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