Preparation of polyetherpolyols in the presence of a...

Details Preparation of polyetherpolyols in the presence of a... Preparation of polyetherpolyols in the presence of a...

2006-04-04

2006-04-04

Keys, Rosalynd (Department: 1621)

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

Organic compounds

Oxygen containing

C568S623000, C568S624000, C568S625000, C568S679000, C568S680000

Reexamination Certificate

active

07022884

ABSTRACT:
Polyetherpolyols are prepared by reacting diols or polyols with ethylene oxide, propylene oxide, butylene oxide or a mixture thereof in the presence of a multimetal cyanide complex catalyst by a process which is carried out in a vertical, highly cylindrical reactor having a central stirrer and having heat exchanger plates through which a heat-exchange medium flows and which are arranged essentially in the longitudinal direction of the reactor, at an angle α of from 0 to 70° in the direction of rotation of the stirrer relative to the reactor radius.

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Translation of the International Preliminary Examination Report Dated Jan. 3, 2002.

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