Process for the production of low viscosity high functionality,

Details Process for the production of low viscosity high functionality, Process for the production of low viscosity high functionality,

1994-03-18

1997-04-29

Kight, John

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

Organic compounds

Carbohydrates or derivatives

536120, 536124, C07H 100, C07H 1504

Patent

active

056250452

ABSTRACT:
High functionality, low viscosity, light colored sucrose-based polyethers are prepared by reacting a starter mixture containing i) approximately 100 parts by weight of sucrose, ii) from about 30 to about 1000 parts by weight of a low molecular weight, relatively high valency alcohol and/or an alkoxylation product of such an alcohol and iii) an alkali metal hydroxide which has been prepared at a temperature of from about 20.degree. to about 110.degree. C. with an alkylene oxide at a temperature of from about 90.degree. to about 130.degree. C. and at a pressure of from about 0.3 to about 4 bar excess nitrogen pressure. These polyether polyols are particularly useful for the production of polyurethanes, particularly rigid polyurethane foams.

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J.W. LeMaistre and R.B. Seymour, Journal of Organic Chemistry, p. 782, 1948 .

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