Polymerizing tetrahydrofuran to produce polytetramethylene ether

Details Polymerizing tetrahydrofuran to produce polytetramethylene ether Polymerizing tetrahydrofuran to produce polytetramethylene ether

1991-02-13

1992-06-02

Mars, Howard T.

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

Organic compounds

Oxygen containing

C07C 4101

Patent

active

051188694

ABSTRACT:
A catalyst and process for preparing it and its use in polymerizing tetrahydrofuran to produce polytetramethylene ether glycol ether are disclosed. The catalyst is a blend of a fluorinated resin containing sulfonic acid groups and a fluorinated resin containing carboxylic acid groups. The catalyst is partially dried to contain from 1,000 to 2,000 ppm water, so that when it is used to polymerize tetrahydrofuran, the product polytetramethylene ether glycol will have a number average molecular weight of from 250 to 4,000.

REFERENCES:
patent: 4163115 (1979-07-01), Heinsohn et al.
patent: 4202964 (1980-05-01), Pruckmayr et al.

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