Purification of polytetramethylene ether-glycols

Details Purification of polytetramethylene ether-glycols Purification of polytetramethylene ether-glycols

1982-02-10

1984-07-17

Mars, Howard T.

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

Organic compounds

Oxygen containing

568621, C07C 4134

Patent

active

044607962

ABSTRACT:
Polytetramethylene etherglycols are purified by treating the alkaline catalysts with orthophosphoric acid in an equivalence ratio of from 1.5 to 2.5:3 and then separating off the inorganic salts formed.

REFERENCES:
patent: 2751419 (1956-06-01), Hill et al.
patent: 2983763 (1961-05-01), Krause
patent: 3016404 (1962-01-01), Beauchamp et al.
patent: 3030426 (1962-11-01), Moseley et al.
patent: 3712930 (1973-01-01), Matsuda et al.
patent: 3833669 (1974-09-01), Gehm et al.

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