Process for the preparation of polytetramethylene ether glycol d

Details Process for the preparation of polytetramethylene ether glycol d Process for the preparation of polytetramethylene ether glycol d

1997-10-21

2000-05-30

Acquah, Samuel A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

524730, 524731, 524845, 524 81, 560240, 568617, C08G 6300, C07C 4311

Patent

active

06069226&

ABSTRACT:
Polytetramethylene ether glycol diester of the formula ##STR1## wherein R and R.sup.1 are identical or different and are alkyl radicals having 1-4 carbon atoms, and n is an integer from 2 to 200, are prepared by polymerizing tetrahydrofuran in the presence of

REFERENCES:
patent: 4303782 (1981-12-01), McHale et al.
patent: 4480124 (1984-10-01), Mueller
patent: 4608422 (1986-08-01), Mueller
patent: 5112943 (1992-05-01), Mueller
patent: 5208385 (1993-05-01), Kahn et al.
patent: 5210283 (1993-05-01), Kahn et al.
German Publication K. Wimmer: Herstellung von Katalysatoren und Mischkatalysatoren, pp. 148-149 and 180-183.

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