Process for producing polyetherglycol

Details Process for producing polyetherglycol Process for producing polyetherglycol

1984-05-16

1986-02-04

Mars, Howard T.

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

Organic compounds

Oxygen containing

C07C 4101, C07C 4102

Patent

active

045687757

ABSTRACT:
A process for producing a polyoxytetramethylene glycol or a copolymerized polyetherglycol by polymerizing tetrahydrofuran or a mixture of tetrahydrofuran with other cyclic ethers copolymerizable therewith, which comprises using a heteropoly-acid as a catalyst and permitting 0.1 to 15 mol of water per mol of the heteropolyacid to be present in the catalyst phase.
The above-described polymer and copolymer are industrially useful polymers which can be used as the primary starting materials for polyurethanes to be used for a spandex and a synthetic leather, solvents, pressured fluids, etc.

REFERENCES:
patent: 4120903 (1978-10-01), Pruckmayr et al.
patent: 4163115 (1979-07-01), Heinsohn et al.
patent: 4202964 (1980-05-01), Pruckmayr et al.
patent: 4371713 (1983-02-01), Matsumoto et al.
Izumi et al., CA 99, 52883d (1983), J. Mol. Catal 1983, 18 (3) 299-314.
Japanese Patent Publication No. 58('83)-83028 Relating to Japanese Patent Application No. 18073/'81 (Daicel).

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