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Title:
IMPROVED METHOD FOR PRODUCING HETEROOMACROCYCLIC COMPOUND
Document Type and Number:
Japanese Patent JPS5459294
Kind Code:
A
Abstract:
A process is provided for the continuous or semi-continuous production of hetero-macrocyclic compounds including lactones and cyclic esters. The process involves the catalyzed depolymerization of a linear polyester at an elevated temperature and under reduced pressure in the presence of a specified amount of monocarboxylate moieties and while providing top-to-bottom mixing throughout essentially the total volume of the reaction mass.

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Inventors:
YUUJIN JII HARISU
JIYON EFU HOWAITO
Application Number:
JP11571278A
Publication Date:
May 12, 1979
Filing Date:
September 20, 1978
Export Citation:
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Assignee:
EMERY INDUSTRIES INC
International Classes:
C07D273/00; C07D315/00; C07D321/00; C07D323/00; C07D327/00; (IPC1-7): C07D273/00; C07D323/00; C07D327/00



 
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