Recovery of hydroxycarboxylic acid values from poly(hydroxycarbo

Details Recovery of hydroxycarboxylic acid values from poly(hydroxycarbo Recovery of hydroxycarboxylic acid values from poly(hydroxycarbo

1993-03-03

1994-08-30

Ivy, C. Warren

Liquid crystal cells, elements and systems

Liquid crystal optical element

Liquid crystal lenses other than for eyewear

C07D31912

Patent

active

053429699

ABSTRACT:
A improved process for depolymerizing a poly(alpha-hydroxycarboxylic acid) to its corresponding dimeric cyclic ester is disclosed. The process comprises:

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