Process for purification of crude polyether polyols

Details Process for purification of crude polyether polyols Process for purification of crude polyether polyols

1983-07-22

1985-03-26

Mars, Howard T.

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

Organic compounds

Carbohydrates or derivatives

536127, 536126, 560 79, 560191, 564310, 564334, 564437, 564438, 564464, 564475, 564497, 564498, 568618, 568619, 568620, 568621, C07H 1504, C07C 4134

Patent

active

045074755

ABSTRACT:
A process for purifying crude polyether polyols which are prepared by anionic polymerization of alkylene oxides in the presence of basic catalysts. The polyols are mixed with water and ortho-phosphoric acid in certain quantity ratios, an adsorption agent is incorporated in the reaction mixture, the mixture is filtered and the water is removed from the polyether polyol by distillation.

REFERENCES:
patent: 4306943 (1981-12-01), Mori et al.

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