Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1995-07-10
1998-09-22
Ivy, C. Warren
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
C07C 4311
Patent
active
058115951
ABSTRACT:
The present invention concerns a process for preparing a highly pure adduct of one or more alkylene oxide(s) to a compound which is sufficiently reactive for an addition reaction, said process being carried out in a reaction system designed as a loop-type reactor and comprising the steps of (a) feeding a compound sufficiently reactive for the addition reaction to the reaction system and circulating said compound in the whole system; (b) deaerating the whole reaction system and injecting an inert gas; (c) adding said alkylene oxide(s) with mixing, said addition step taking place at a point of the reaction system which is upstream a heat exchanger which is assembled in the loop and serves as a means for heating; (d) quickly heating a partial amount of the reaction mixture containing freshly admixed alkylene oxide(s) to a temperature allowing a substantial degree of conversion of the reactants; (e) immediately cooling, after reaching said substantial degree of conversion of said reactants, said partial amount of said reaction mixture to a holding temperature allowing substantially no side reaction; (f) holding said reaction mixture having reached said desired degree of conversion of said reactants, in said loop-type reactor at said holding temperature allowing substantially no side reaction; and (g) freshly admixing said alkylene oxide(s) in accordance with step (c) for another reaction cycle; as well as a loop-type reactor for carrying out said process.
REFERENCES:
patent: 2586767 (1952-02-01), Wilson
patent: 3117998 (1964-01-01), Cosby
patent: 4089365 (1978-05-01), Miserlis et al.
Ivy C. Warren
Vollano Jean F.
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