Method for preparation of macrocyclic poly(alkylene dicarboxylat

Details Method for preparation of macrocyclic poly(alkylene dicarboxylat Method for preparation of macrocyclic poly(alkylene dicarboxylat

1991-06-03

1993-05-25

Ivy, C. Warren

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

528272, 528274, C07D32100, C08G 6378

Patent

active

052141586

ABSTRACT:
Macrocyclic polyester oligomer compositions comprising alkylene isophthalate or terephthalate units or the like are prepared by the reaction of a diol with a diacid chloride in the presence of a catalytic amount of at least one amine characterized by substantially no steric hindrance around the basic nitrogen atom, and an acid accepting amount of at least one other tertiary amine such as triethylamine. The reaction is conducted under substantially anhydrous conditions.

REFERENCES:
patent: 5039783 (1991-08-01), Brunelle et al.

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