Preparation of polytetramethylene ether glycol diesters having a

Details Preparation of polytetramethylene ether glycol diesters having a Preparation of polytetramethylene ether glycol diesters having a

1987-04-06

1989-02-07

Moyer, Donald B.

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

Organic compounds

Carboxylic acid esters

560252, 568617, 528408, C07C 6724

Patent

active

048032999

ABSTRACT:
Polytetramethylene ether glycol diesters having a low color number are prepared by catalytic polymerization of tetrahydrofuran in the presence of a carboxylic anhydride, a bleaching earth and from 2 to 0.2% by weight, based on the tetrahydrofuran, of an alkylene oxide.

REFERENCES:
patent: 2751419 (1956-06-01), Hill, Jr. et al.
patent: 3454652 (1969-07-01), Dunlop et al.
patent: 3935252 (1976-01-01), Tomomatsu
patent: 3980672 (1976-09-01), Tomomatsu
patent: 4189566 (1980-02-01), Mueller et al.
patent: 4480124 (1984-10-01), Mueller
patent: 4525580 (1985-06-01), Baker

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