C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 51/235 (2006.01) C07C 59/125 (2006.01)
Patent
CA 2689596
The invention relates to a method for producing alkyl polyglycol carboxylic acids and polyglycol dicarboxylic acids by means of direct oxidation. The aim of the invention is a method for producing compounds of the formula (Ia) and/or compounds of the formula (Ib), wherein R1 is a saturated, linear or branched alkyl radical having 1 to 22 carbon atoms or a monounsaturated or polyunsaturated linear or branched alkylene radical having 2 to 22 carbon atoms; R2, R3 independently from each other represent hydrogen, a linear or branched alkyl radical having 1 to 22 carbon atoms, a monounsaturated or polyunsaturated linear or branched alkylene radical having 2 to 22 carbon atoms, or an aryl radical having 6 to 12 carbon atoms; X represents an alkyl radical having 2 to 4 carbon atoms; n represents a number between 0 and 100; m represents a number between 1 and 250; and B represents a cation or hydrogen, and/or the corresponding protonized carboxylic acids, in that one or more compounds of the formula (IIa) and/or the formula (IIb), with R1, R2, R3, X, n, and m having the meanings indicated above, are oxidized with oxygen or oxygen-containing gases in the presence of a gold-containing catalyst and at least one alkaline compound.
La présente invention concerne un procédé de préparation de composés de formule (Ia) et/ou de composés de formule (Ib), dans lesquelles R1 signifie un radical alkyle saturé, linéaire ou ramifié comprenant 1 à 22 atomes de carbone ou un radical alcényle monoinsaturé ou polyinsaturé linéaire ou ramifié comprenant 2 à 22 atomes de carbone, R2, R3 signifient indépendamment l'un de l'autre hydrogène, un radical alkyle linéaire ou ramifié comprenant 1 à 22 atomes de carbone, un radical alcényle monoinsaturé ou polyinsaturé linéaire ou ramifié comprenant 2 à 22 atomes de carbone, ou un radical aryle comprenant 6 à 12 atomes de carbone, X signifie un radical alkylène comprenant 2 à 4 atomes de carbone, n est un nombre entre 0 et 100, m est un nombre entre 1 et 250, et B signifie un cation ou de l'hydrogène, et/ou des acides carboxyliques protonés correspondants, en oxydant un ou plusieurs composés de formule (IIa) et/ou de formule (IIb) dans lesquelles R1, R2, R3, X, n et m possèdent la signification indiquée ci-dessus, avec de l'oxygène ou des gaz contenant de l'oxygène en présence d'un catalyseur contenant de l'or et d'au moins un composé alcalin.
Decker Nadine
Franke Oliver
Pruesse Ulf
Stankowiak Achim
Vorlop Klaus-Dieter
Clariant Finance (bvi) Limited
Fetherstonhaugh & Co.
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