Method to produce and purify cyclic esters

Details Method to produce and purify cyclic esters Method to produce and purify cyclic esters

1995-04-05

1997-10-07

Ivy, C. Warren

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549349, C07D32100, C07D32110

Patent

active

056750218

ABSTRACT:
Methods are provided for the production, recovery and purification of cyclic esters. Such methods include producing a cyclic ester composition containing at least one impurity, contacting the cyclic ester composition with at least one adsorbent to remove the impurity and recovering the purified cyclic esters. Also included are methods of cyclic ester purification involving multiple adsorption operations. The methods of the present invention can produce highly purified cyclic esters. Such compositions are suitable for use in the manufacture of polymers having an average degree of polymerization in excess of about 1700.

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