Process for separation of hydrolyzable from non-hydrolyzable was

Details Process for separation of hydrolyzable from non-hydrolyzable was Process for separation of hydrolyzable from non-hydrolyzable was

1991-12-20

1994-07-05

Schofer, Joseph L.

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

Synthetic resins

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

528481, 528499, C08J 1114

Patent

active

053267915

ABSTRACT:
The present invention relates to a process for reactively separating hydrolyzable polymers, such as PET, in mixtures of the polymer and certain non-hydrolyzable polymers, specifically polyolefins by converting the hydrolyzable polymers to their corresponding water soluble components (e.g., PET to ethylene glycol and terephthalic acid) in the presence of liquid water at temperatures from about 200.degree. C. up to the critical temperature of water and autogenous pressure. The process has utility in recycling and waste material separation processes.

REFERENCES:
patent: 3083193 (1963-03-01), Kolner
patent: 4439601 (1984-03-01), McCurdy et al.
patent: 4458064 (1984-07-01), Chatterjee

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