Process for removing alkaline catalysts from polyether polyols

Details Process for removing alkaline catalysts from polyether polyols Process for removing alkaline catalysts from polyether polyols

1982-12-22

1984-11-13

Mars, Howard T.

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

Organic compounds

Oxygen containing

568620, 568623, 568624, C07C 4134

Patent

active

044827504

ABSTRACT:
A process for removing alkali material from a polyether polyol. From 1-20 wt. % water and 0-30 wt. % inert organic solvent are added to an alkaline polyether polyol. The resultant emulsion is maintained at a temperature of at least 70.degree. C. for a period of at least 30 minutes with little or no stirring to effect separation of the emulsion into an organic and an aqueous phase. The aqueous phase is then separated from the organic phase and the organic phase is treated by known methods to remove residual alkali material.

REFERENCES:
patent: 3299151 (1967-01-01), Wismer et al.
patent: 3489680 (1970-01-01), Snavely
patent: 3582491 (1971-06-01), Louvar et al.
patent: 3823145 (1974-07-01), Louvar et al.
patent: 4240908 (1980-12-01), Swain et al.
patent: 4322312 (1982-03-01), Boehmke

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