Process for producing polyether polyol and a product

Details Process for producing polyether polyol and a product Process for producing polyether polyol and a product

1986-12-22

1988-12-20

Hollrah, Glennon H.

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

Organic compounds

Amino nitrogen containing

564505, 568 45, 568617, 528417, C07C 8524, C07C 8720

Patent

active

047926279

ABSTRACT:
A process for producing a polyether polyol with a content of 0.5 to 99.5% by weight of oxytetramethylene groups derived from tetrahydrofuran by copolymerizing tetrahydrofuran or a mixture of tetrahydrofuran and other cyclic ether copolymerizable therewith with a polyhydric alcohol having two or more hydroxyl groups per one molecule with the use of a heteropoly-acid and/or its salt as a catalyst, which comprises allowing 0.1 to 15 molecules of water per one heteropoly-anion to exist in the catalyst phase.
The above-described polyether polyol is an industrially useful polymer which is a starting material for polyurethane to be used for spandex or a synthetic leather, etc.

REFERENCES:
patent: 4202964 (1980-05-01), Pruckmayr et al.
patent: 4374970 (1983-02-01), Robinson
patent: 4393199 (1983-07-01), Manser
patent: 4481123 (1984-11-01), Heutschel et al.
patent: 4568775 (1986-02-01), Aoshima et al.
patent: 4658065 (1987-04-01), Aoshima et al.

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