Depolymerization of substantially amorphous polyesters

Details Depolymerization of substantially amorphous polyesters Depolymerization of substantially amorphous polyesters

1992-11-02

1994-07-12

Acquah, Samuel A.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528481, 528489, 528493, 528497, 528503, 134 29, 562483, 562485, 560 78, 560 79, C08J 300

Patent

active

053289820

ABSTRACT:
Ester bonds are hydrolyzed in the conversion of substantially amorphous polyesters to their monomeric components, by being contacted with a mixture of (a) an alcohol, such as methanol, or glycol, (b) a polar aprotic solvent such as N-methyl-pyrrolidone or dimethyl sulfoxide and (c) an alkoxide or hydroxide such as sodium hydroxide.

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