Method of making polyether polyols from solid hydroxyl...

Details Method of making polyether polyols from solid hydroxyl... Method of making polyether polyols from solid hydroxyl...

C - Chemistry, Metallurgy

07

H

260/233, 260/632

C07H 15/08 (2006.01) C08G 18/48 (2006.01) C08G 65/26 (2006.01)

Patent

CA 1118417

ABSTRACT OF THE INVENTION This invention provides a novel method for making polyether polyols from solid initiator compounds containing from 4 to 8 hydroxyl groups. The method involves dissolving the solid initiator compound in a solvent such as dimethyl formamide prior to alkoxylation. The method is particularly useful in making high functional sucrose-based polyether polyols which can be readily processed at moderate temperatures and give low color products. These polyols are particularly suited for the production of rigid polyurethane foams.

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