Global Patent Index - EP 1335893 A1

EP 1335893 A1 20030820 - METHOD FOR PRODUCING POLY- OR MONOMETHYLOL ALKANOIC ACIDS

Title (en)

METHOD FOR PRODUCING POLY- OR MONOMETHYLOL ALKANOIC ACIDS

Title (de)

VERFAHREN ZUR HERSTELLUNG VON POLY- ODER MONOMETHYLOLALKANSÄUREN

Title (fr)

PROCEDE DE PRODUCTION D'ACIDES D'ALCANE DE POLYMETHYLOL OU D'ALCANE DE MONOMETHYLOL

Publication

EP 1335893 A1 20030820 (DE)

Application

EP 01993594 A 20011031

Priority

  • DE 10055181 A 20001108
  • EP 0112563 W 20011031

Abstract (en)

[origin: WO0238527A1] The invention relates to a method for producing poly- or monomethylol alkanoic acids of general formula (I), R being the same or different and meaning a substituted or unsubstituted aliphatic hydrocarbon with 1 to 22 C-atoms or a methylol group; from the corresponding poly- or monomethylol alkanals of general formula (II), R having the meaning above, by oxidation with hydrogen peroxide. The poly- or monomethylol alkanal of general formula (II) used in the reaction has an overall content of metal ions of groups 3 to 14 of the periodic table of up to 5 ppm. The method is used especially for producing dimethylol allkanoic acids from the corresponding dimethylol alkanals, especially for producing dimethylol butanal or dimethylol propanal.

IPC 1-7

C07C 51/47

IPC 8 full level

C07C 51/235 (2006.01); C07C 51/285 (2006.01); C07C 51/47 (2006.01); C07C 59/105 (2006.01)

CPC (source: EP)

C07C 51/285 (2013.01); C07C 51/47 (2013.01)

C-Set (source: EP)

  1. C07C 51/285 + C07C 59/105
  2. C07C 51/285 + C07C 59/10
  3. C07C 51/47 + C07C 59/10
  4. C07C 51/47 + C07C 59/105

Citation (search report)

See references of WO 0238527A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

DOCDB simple family (publication)

WO 0238527 A1 20020516; CN 1473142 A 20040204; DE 10055181 A1 20020529; EP 1335893 A1 20030820; JP 2004513158 A 20040430; KR 20030048462 A 20030619; US 2004034243 A1 20040219

DOCDB simple family (application)

EP 0112563 W 20011031; CN 01818554 A 20011031; DE 10055181 A 20001108; EP 01993594 A 20011031; JP 2002541066 A 20011031; KR 20037006254 A 20030507; US 39949303 A 20030417