Method for producing tetrahydrofurane copolymers

Details Method for producing tetrahydrofurane copolymers Method for producing tetrahydrofurane copolymers

2006-08-22

2006-08-22

Price, Elvis O. (Department: 1621)

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

Organic compounds

Oxygen containing

C568S619000, C568S618000

Reexamination Certificate

active

07094933

ABSTRACT:
The present invention provides a process for one-stage preparation of polyoxyalkylene glycols by copolymerizing tetrahydrofuran and alpha,omega-diols in the presence of a heteropolyacid and of a hydrocarbon, which comprises distilling water in a mixture with this hydrocarbon out of the copolymerization.

REFERENCES:
patent: 100 32 264 (2002-01-01), None
patent: 100 32 265 (2002-01-01), None
patent: 0 126 471 (1984-11-01), None

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