Process for preparing a narrow molecular weight distribution pol

Details Process for preparing a narrow molecular weight distribution pol Process for preparing a narrow molecular weight distribution pol

1990-06-25

1991-10-01

Mars, Howard T.

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

Organic compounds

Oxygen containing

518621, C07C 4138

Patent

active

050535536

ABSTRACT:
A process for preparing a narrow molecular weight distribution poly(tetramethylene ether) glycol (PTMEG) from a PTMEG starting material via liquid-liquid extraction which employs methanol, water and non-polar solvent wherein the amount of non-polar solvent is, by weight, less than the PTMEG starting material.

REFERENCES:
patent: 3478109 (1969-11-01), McConnell
patent: 4762951 (1988-08-01), Mueller

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