Process for the production of polytetramethylene ether glycol

Details Process for the production of polytetramethylene ether glycol Process for the production of polytetramethylene ether glycol

1978-12-05

1980-06-24

Mars, Howard T.

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

Organic compounds

Oxygen containing

C07C 4100

Patent

active

042096413

ABSTRACT:
An improved process for the production of polytetramethylene ether glycol is disclosed. Polytetramethylene ether glycol is obtained with a high yield by subjecting tetrahydrofuran to ring opening polymerization in the presence or absence of an organic solvent with the use of, as a catalyst, a lithium halide in conjunction with fuming sulfuric acid. Average molecular weight of the glycol product can be controlled in the range of 1000-3000 at will by varying the amounts of the lithium halide and fuming sulfuric acid used.

REFERENCES:
patent: 3712930 (1973-01-01), Matsuda et al.
Matsuda et al., A.C.S. Polymer Reprints, (1974), pp. 468-473.

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