Title:
ポリメチロールアルカン酸又はモノメチロールアルカン酸の製造方法
Document Type and Number:
Japanese Patent JP2004513158
Kind Code:
A
Abstract:
Polymethylolalkanoic or monomethylolalkanoic acids of the formula (I) where R may be identical or different and are each a substituted or unsubstituted aliphatic hydrocarbon group having from 1 to 22 carbon atoms, an aryl or arylalkyl group having from 6 to 22 carbon atoms or a methylol group, are prepared from the corresponding polymethylolalkanals or monomethylolalkanals of the formula (II) where R is as defined above, by oxidation using hydrogen peroxide. The polymethylolalkanal or monomethylolalkanal of the formula (II) used in the reaction has a total content of metal ions of groups 3 to 14 of the Periodic Table of the Elements of up to 5 ppm. The process is particularly useful for preparing dimethylolalkanoic acids from the corresponding dimethylolalkanals, especially for preparing dimethylolbutanoic or dimethylolpropanoic acid.
Inventors:
Hagen weigl
Claus Abel
Stephen Mars
Gerhard Schultz
Matthias dernbach
Claus Abel
Stephen Mars
Gerhard Schultz
Matthias dernbach
Application Number:
JP2002541066A
Publication Date:
April 30, 2004
Filing Date:
October 31, 2001
Export Citation:
Assignee:
BASF Aktiengesellschaft
International Classes:
C07C51/285; C07C51/47; C07C59/105; C07C51/235; (IPC1-7): C07C51/235; C07C59/105
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard
Reinhard Einsel
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard
Reinhard Einsel