Title:
Branched, subtantially unsaturated fatty alcohol sulfates
Document Type and Number:
WIPO Patent Application WO2001014325
Kind Code:
A3
Abstract:
Branched, substantially unsaturated fatty alcohol sulfates are produced by a process which comprises the steps of: (a) dimerizing unsaturated C16-22 fatty acid to form a dimer fraction and a monomer fraction comprised of branched, substantially unsaturated fatty acids and straight chain saturated fatty acids, (b) removing the monomer fraction from the dimerization step, (c) converting the branched, substantially unsaturated fatty acids from step (b) into the corresponding fatty acid methyl esters, (d) hydrogenating the branched, substantially unsaturated fatty acid methyl esters with the double bonds intact to form the corresponding branched, substantially unsaturated fatty alcohols and (e) sulfating and neutralizing the branched, substantially unsaturated fatty alcohols. The fatty alcohol sulfates thus produced exhibit improved performance properties and greater oxidative stability than standard unsaturated fatty alcohol sulfates.
Inventors:
WESTFECHTEL ALFRED (DE)
RATHS HANS-CHRISTIAN (DE)
HUEBNER NORBERT (DE)
RATHS HANS-CHRISTIAN (DE)
HUEBNER NORBERT (DE)
Application Number:
PCT/EP2000/007849
Publication Date:
August 23, 2001
Filing Date:
August 11, 2000
Export Citation:
Assignee:
WESTFECHTEL ALFRED (DE)
RATHS HANS-CHRISTIAN (DE)
HUEBNER NORBERT (DE)
COGNIS DEUTSCHLAND GMBH (DE)
RATHS HANS-CHRISTIAN (DE)
HUEBNER NORBERT (DE)
COGNIS DEUTSCHLAND GMBH (DE)
International Classes:
A61K8/46; A61K47/20; A61Q5/02; A61Q19/00; A61Q19/10; C07C305/00; C07C305/14; C11D1/14; (IPC1-7): C07C305/14; C07C303/24; C07C29/149; C11D1/14
Domestic Patent References:
| WO1996002619A1 | 1996-02-01 | |||
| WO1998042646A1 | 1998-10-01 |
Other References:
T. ZIMAITY ET AL, J. AMER. OIL CHEM. SOC., vol. 48, no. 11, 1971, pages 665 - 667, XP000979317
H. MÖHRING ET AL, FAT SCI. TECHNOL., vol. 92, no. 7, 1990, pages 255 - 259, XP000982075
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 10 31 October 1997 (1997-10-31)
H. MÖHRING ET AL, FAT SCI. TECHNOL., vol. 92, no. 7, 1990, pages 255 - 259, XP000982075
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 10 31 October 1997 (1997-10-31)
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