Method of recovering polyvinyl chloride from solvent-containing

Details Method of recovering polyvinyl chloride from solvent-containing Method of recovering polyvinyl chloride from solvent-containing

1992-03-30

1992-10-27

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Process of treating scrap or waste product containing solid...

C08J 1106, C08J 1108

Patent

active

051589842

ABSTRACT:
Reuseable polyvinyl chloride is recovered from solvent-loaded waste polyvinyl chloride paste by adding one twentieth of the paste weight of an acyl polyethylene glycol ester, then adding about twice the paste weight of water, while stirring, driving off the solvent by steam distillation, separating the solvent from the resulting two-phase distillate, and filtering off and drying the polyvinyl chloride granules floating in water left behind in the distillation residue.

REFERENCES:
patent: 3912664 (1975-10-01), Wainer
patent: 4031039 (1977-06-01), Mizumoto et al.
patent: 4038219 (1977-07-01), Boehm
patent: 4071479 (1978-01-01), Broyde et al.
patent: 5022985 (1991-06-01), Nugent

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