C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 73/02 (2006.01) C07C 209/16 (2006.01)
Patent
CA 2061389
MODIFIED NORMALLY LIQUID, WATER-SOLUBLE POLYOXYALKYLENE POLYAMINES (Docket 80,663-F) ABSTRACT OF THE DISCLOSURE In accordance with the process of the present invention normally liquid, water-soluble poly(oxyethylene/oxypropylene) polyamine products are prepared using an initiator, which may contain oxyethylene groups. In a series of alkoxylation reaction steps the initiator is reacted with predetermined weight percentages of ethylene oxide and propylene oxide, said process comprising the steps of: a. Charging a predetermined percentage of initiator to an alkoxylation reaction zone, b. Alkoxylating said initiator therein with predeter- mined percentages of ethylene oxide and propylene oxide to provide an intermediate polyol, c. Propoxylating said intermediate polyol with a predetermined percentage of propylene oxide to provide a normally liquid, water-soluble precursor polyol, and d. Catalytically reductively aminating said precursor polyol in the presence of a reductive amination catalyst in a reaction zone under reductive amination conditions in the presence of ammonia and hydrogen to provide said water- soluble poly(oxyethylene/oxypropylene) polyamine product.
Cuscurida Michael
Yeakey Ernest L.
Huntsman Corporation
Smart & Biggar
LandOfFree
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