C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 51/34 (2006.01) C07C 55/22 (2006.01) C07C 55/24 (2006.01) C07C 61/06 (2006.01)
Patent
CA 2067831
HOE 91/F 125 Abstract of the disclosure: Process for the preparation of polycarboxylic acids and derivatives thereof The invention relates to a process for the preparation of polycarboxylic acids and derivatives thereof, the poly- carboxylic acids prepared containing at least three carboxyl groups, comprising the steps (A) introducing one or more organic compounds, which contain nonaromatic carbon-carbon (C-C) double bonds, into water, (B) ozonolysis of the organic compounds in water by passing in an ozone-containing carrier gas, (C) addition of an aqueous hydrogen peroxide solu- tion, to oxidatively work up the ozonolysis products produced in step (B), which comprises, in step (A), introducing the organic compound(s) into water having a pH of 7 or less than 7 and, in step (C), adding hydrogen peroxide in water without adding an organic solvent.
Kulpe Jurgen
Strutz Heinz
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
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