Method for hydrogenating methylol alkanals

Details Method for hydrogenating methylol alkanals Method for hydrogenating methylol alkanals

2004-04-14

2008-10-21

Price, Elvis O. (Department: 1621)

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

Organic compounds

Oxygen containing

C568S853000, C568S464000, C568S862000, C568S463000, C568S457000, C568S458000

Reexamination Certificate

active

07439406

ABSTRACT:
Disclosed is a method for the catalytic hydrogenation of methylol alkanals of general formula (I), where R1and R2independently represent an additional methylol group or an alkyl group having with 1 to 22 carbon atoms, or an alkyl group with 1 to 22 C atoms, or an aryl group or aralkyl group with 6 to 33 carbon atoms, in the liquid phase on a hydrogenation catalyst. The inventive method is characterized in that a pH value ranging between 6.3 and 7.8 is adjusted in the hydrogenation feed by adding at least one tertiary amine

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