Polyol purification

Details Polyol purification Polyol purification

1997-05-08

2000-05-09

Wilson, James O.

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

Organic compounds

Oxygen containing

536167, 536168, 536149, 536 2, 554 186, 568869, C07C 3118, C07C 2726

Patent

active

060606274

ABSTRACT:
A water and allylic compound containing propoxylated glycerin stream is reduced in water content by evaporation and flashed at reduced pressure and elevated temperature to reduce the water content to 1000 ppm or less, and thereafter stripping allylic impurities from the propyxylated glycerin.

REFERENCES:
patent: 4983329 (1991-01-01), Cooper
patent: 5571935 (1996-11-01), Sekula et al.
patent: 5681939 (1997-10-01), Ferenz

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