Preparation of poly(tetramethylene) glycol

Details Preparation of poly(tetramethylene) glycol Preparation of poly(tetramethylene) glycol

2008-07-22

2008-07-22

Keys, Rosalynd (Department: 1621)

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

Organic compounds

Oxygen containing

Reexamination Certificate

active

07402711

ABSTRACT:
This invention relates to a process comprising using ionic liquids for preparing poly(tetramethylene)glycol from tetrahydrofuran.

REFERENCES:
patent: 5262562 (1993-11-01), Hollingsworth et al.
patent: 5541346 (1996-07-01), Drysdale et al.
patent: 5608105 (1997-03-01), Fitzpatrick
patent: 5859263 (1999-01-01), Ghorpade et al.
patent: 6054611 (2000-04-01), Farone et al.
patent: 2003/0233011 (2003-12-01), Fagan et al.
patent: WO 03/048078 (2003-06-01), None

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