Method of making polyether polyols from solid hydroxyl containin

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

1978-10-16

1982-06-01

Hazel, Blondel

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

Organic compounds

Carbohydrates or derivatives

536 183, C07C 4100, C07H 1504

Patent

active

043329365

ABSTRACT:
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.

REFERENCES:
patent: 2902478 (1959-09-01), Anderson
patent: 3222357 (1965-12-01), Wismer et al.
patent: 3317508 (1967-05-01), Winquist et al.
patent: 3346557 (1967-10-01), Patton et al.
patent: 3357970 (1967-12-01), Uhyatt et al.
patent: 3433751 (1969-03-01), Yotsuzuka et al.
patent: 3941769 (1976-03-01), Maassen et al.

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