WO2001038298A1 - Verfahren zur isolierung von amidosäurephenylestersulfonaten aus wasser-lösungsmittel-gemischen - Google Patents
Verfahren zur isolierung von amidosäurephenylestersulfonaten aus wasser-lösungsmittel-gemischen Download PDFInfo
- Publication number
- WO2001038298A1 WO2001038298A1 PCT/EP2000/011221 EP0011221W WO0138298A1 WO 2001038298 A1 WO2001038298 A1 WO 2001038298A1 EP 0011221 W EP0011221 W EP 0011221W WO 0138298 A1 WO0138298 A1 WO 0138298A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mixture
- solvent
- water
- oxyalkanoyl
- sulfophenyl
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C303/00—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
- C07C303/42—Separation; Purification; Stabilisation; Use of additives
- C07C303/44—Separation; Purification
Definitions
- the invention relates to a process for isolating amido acid phenyl ester sulfonates from water-solvent mixtures.
- Amidosaurephenylestersulfonate serve as bleach activators in detergents and other cleaning agents that contain bleach. These activators have several beneficial properties such as excellent bleaching performance with minimal damage to fabric colors, good compatibility with washing machines and a good odor profile in the laundry.
- Amidosaurephenylestersulfonate can also be synthesized from relatively inexpensive and readily available substances. Many different synthetic routes are known from the prior art, such as. B. in WO 95/07882, WO 96/28417. WO 99/09004 describes a method for producing and
- the amido acid phenyl ester sulfonate is present after the reaction in a mixture of water, solvent and by-products.
- the amido acid phenyl ester sulfonate is present in a mixture of water, solvent, by-products and at least one catalyst.
- Other synthetic routes and purification routes are conceivable, from which a mixture of amido acid phenyl ester sulfonate, water, solvent, by-products and optionally other components, such as. B. catalysts results.
- the invention was therefore based on the object of a method for isolating
- amido acid phenyl ester sulfonate from a mixture with water, solvent, by-products and possibly other components which on the one hand does not have the disadvantage of the very slow mechanical separation of the product and on the other hand achieves sufficiently high purities.
- this object is achieved by a method which comprises the following steps:
- the 4-sulfophenyl - [(1-oxyalkanoyl) amino] alkanoate has the general structural formula
- n is an integer between 1 and 26, preferably between 1 and 10, very particularly preferably 5.
- R., and R 2 are independently selected identically or differently from hydrogen, unsubstituted or substituted straight-chain or branched C to C 20 alkyl, unsubstituted or substituted C 3 to C 8 cycloalkyl, C 3 to C 8 alkenyl, C 3 to C 8 alkynyl and C B to C 14 aryl.
- the unsubstituted or substituted C 3 to C 8 cycloalkyl groups mentioned above represent cycloaliphatic hydrocarbon groups containing 3 to 8 carbon atoms in the ring, preferably 5 to 6 carbon atoms, and these cycloalkyl groups can be substituted with one or two of C to C 4 -alkyl, C, - to C 4 -alkoxy, hydroxy or C, - to C 4 -alkaneoxy.
- the C 3 to C 8 alkenyl and C 3 to C 8 alkynyl groups represent straight-chain or branched hydrocarbon radicals, the 3 to 8 carbon atoms in the chain and a carbon-carbon double bond or a carbon-carbon - Triple binding included.
- aryl is used to include carboxyl aryl groups containing up to 14 carbon atoms, e.g., phenyl and naphthyl, and those substituted with one or two groups selected from C, - bis C 4 -alkyl, C, - to C 4 -alkoxy, C to C 4 -alkoxycarbonyl, C r to C 4 -alkaneoxy, C, - to C 4 -
- aryl is also used to include heterocyclic aryl groups such as a 5- or 6-part heterocyclic ring containing an oxygen atom and / or a sulfur atom and / or up to three nitrogen atoms "The heterocyclic aryl ring may optionally be attached to one or two phenyl rings or another 5- or 6-part heteroaryl ring.
- ring systems include: thienyl, furyl, pyrrolyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl , Oxazolyl, isoxazolyl, triazolyl, thiadiazolyl, oxadiazolyl, tetrazolyl, thiatriazolyl, oxatriazolyl, pyridyl, pyrimidyl, pyrazinyl, pyridazinyl, thiazinyl, oxazinyl, triazinyl, thiadizinyl, oxadiazinyl, dithiazinyl, dioxad
- Tetrazinyl Tetrazinyl, Thiatriazinyl, Oxatriazinyl, Dithiadiazinyl, Imidazolinyl, Dihydropyhdyl, Tetrahydropyridyl, Tetrazolo- [1, 5b] pyridazinyl and -purinyl, Benzoxazolyl, Benzothiazolyl, Benzimidazolyl, Indolyl and the like or such rings according to those mentioned above with one or more of those according to the above Definition of the term "aryl" are substituted.
- aryl contains arylene groups.
- arylene is used in such a way that it stands for divalent carboxylic aryl hydrocarbon portions which contain up to 14 carbon atoms, for example o-, m-, p- Phenylene, and those which are substituted by one or two groups from C to C 4 alkyl, C to C 4 alkoxy or a halogen.
- ⁇ And R 2 very particularly preferably represent hydrogen.
- R3 stands for straight-chain or branched aliphatic, cycloaliphatic or aromatic radical which contains 5 to 25, preferably 7 to 9, particularly preferably 8 carbon atoms and can contain a carboxylic acid or a carboxylic acid ester. Suitable examples of R 3 are heptyl, octyl, nonyl, decyl, undecyl, pentadecyl, heptadecyl, 8-heptadecenyl, 8,11-heptadecadienyl, docosanyl, p-carboxybenzyl, o-carboxybenzyl, m-carboxybenzyl, carboxyethyl,
- R 3 very particularly preferably represents octyl.
- R 4 represents hydrogen, methyl, ethyl, propyl or isopropyl, very particularly preferably hydrogen.
- M stands for hydrogen, ammonium or an alkali metal, very particularly preferably for sodium.
- the method according to the invention is generally suitable for isolating substances of the structural formula given above.
- Preferred substances are p-substituted benzenesulfonates.
- the organic solvent in step a) is selected from the series of solvents which are compatible with the starting materials from the preparation of 4-sulfophenyl - [(1-oxyalkanoyl) amino] alkanoate by one of the processes disclosed in the WO documents cited at the beginning ( ie hardly or not reactive, i.e. largely inert).
- the range of solvents that can be used include polar aprotic solvents such as N, N-dimethylacetamide and dimethyl sulfoxide.
- the organic solvent preferably also belongs to the group of solvents which preferably distill off in vacuo in the presence of water.
- the organic solvent can also be an aliphatic, cyclic or aromatic hydrocarbon, an ether, an ester, a ketone or a chlorinated hydrocarbon, preferably an alkane, cycloalkane, alkylbenzene, alkyl ether, alkyl acetate, alkyl ketone, chloroalkane or chlorobenzene, particularly preferably Hexane, heptane, octane, nonane, cyclohexane, toluene, xylene, diethyl ether, tetrahydrofuran, 1, 2-dimethoxyethane, ethyl acetate, n-butyl acetate, acetone,
- Methyl ethyl ketone, dichloromethane, 1, 2-dichloroethane or dichlorobenzene can also be a mixture of two or more of the solvents mentioned above.
- Starting mixture is preferably between 1:10 and 10: 1.
- a bleaching agent a chemical defoamer and / or a mixture in any physical state, containing at least 95% water, can be added to the mixture.
- the 4-sulfophenyl - [(1-oxyalkanoyl) amino] alkanoate can be washed with a washing system.
- the washing system preferably consists of more than 99% by weight of water.
- Weight ratio of solvent to water preferably reduced to below 1:10, particularly preferably to below 1:50, very particularly preferably to below 1: 100 before the separation of 4-sulfophenyl - [(1-oxyalkanoyl) amino] alkanoate from the mixture.
- the removal of solvent can be carried out by all processes known to the person skilled in the art for this purpose, for example by distillation, rectification, stripping with steam or a membrane process.
- the removal of solvent is preferably carried out by distillation or stripping with steam, particularly preferably by vacuum distillation at pressures between 10 and 200 mbar abs, very particularly preferably between 40 and 80 mbar abs.
- the area limits mentioned should belong to the area here and throughout the registration.
- Conditions and the solvent chosen can be used to withdraw different amounts of water from the mixture during the removal of solvent.
- the temperature of the mixture during vacuum distillation is preferably between
- the mixture Before separating 4-sulfophenyl - [(1-oxyalkanoyl) amino] alkanoate from the mixture, the mixture can be heated or cooled. Before the 4-sulfophenyl - [(1-oxyalkanoyl) amino] alkanoate is separated off, the mixture is preferably adjusted to temperatures between 10 ° C. and 40 ° C., particularly preferably between 15 ° C. and 30 ° C.
- the separation of 4-sulfophenyl - [(1-oxyalkanoyl) amino] alkanoate from the mixture can be carried out by all processes known to the person skilled in the art for this purpose, for example by sedimentation, filtration or centrifugation.
- the 4-sulfophenyl - [(1-oxyalkanoyl) amino] alkanoate is preferably separated from the mixture by vacuum filtration or decanting.
- drying of the separated 4-sulfophenyl - [(1-oxyalkanoyl) amino] alkanoate can be carried out by all processes which are known to the person skilled in the art for this purpose. Drying in vacuo is preferably carried out at pressures between 10 and 200 mbar abs.
- the method can be operated in whole or in part, batchwise or continuously, preferably the method is operated completely continuously.
- vacuum distillation achieves a high purification of a 4-sulfophenyl - [(1-oxyalkanoyl) amino] alkanoate, although none of the impurities are distilled off to any appreciable extent with the solvent.
- the advantages of the process according to the invention can essentially be seen in the fact that a 4-sulfophenyl - [(1-oxyalkanoyl) amino] alkanoate is isolated with very high purity and very good yield with little expenditure on equipment and energy.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU12798/01A AU1279801A (en) | 1999-11-25 | 2000-11-14 | Method for isolating amido acid phenyl ester sulfonates out of water-solvent mixtures |
EP00974530A EP1232142A1 (de) | 1999-11-25 | 2000-11-14 | Verfahren zur isolierung von amidosäurephenylestersulfonaten aus wasser-lösungsmittel-gemischen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999156863 DE19956863A1 (de) | 1999-11-25 | 1999-11-25 | Verfahren zur Isolierung von Amidosäurephenylestersulfonaten aus Wasser-Lösungsmittel-Gemischen |
DE19956863.4 | 1999-11-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001038298A1 true WO2001038298A1 (de) | 2001-05-31 |
Family
ID=7930369
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/011221 WO2001038298A1 (de) | 1999-11-25 | 2000-11-14 | Verfahren zur isolierung von amidosäurephenylestersulfonaten aus wasser-lösungsmittel-gemischen |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1232142A1 (de) |
AU (1) | AU1279801A (de) |
DE (1) | DE19956863A1 (de) |
WO (1) | WO2001038298A1 (de) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0402047A1 (de) * | 1989-06-06 | 1990-12-12 | E.I. Du Pont De Nemours And Company | Verfahren zur Herstellung von Phenylestern substituierter Säuren |
WO1995007882A1 (en) * | 1993-09-14 | 1995-03-23 | The Procter & Gamble Company | Synthesis of amido acids from carboxylic acid esters and amino acid salts |
WO1996028417A1 (en) * | 1995-03-15 | 1996-09-19 | The Procter & Gamble Company | Synthesis of bleach activators |
US5650527A (en) * | 1995-06-05 | 1997-07-22 | Eastman Chemical Company | Preparation of amido ester compounds |
WO1999009004A2 (en) * | 1997-08-20 | 1999-02-25 | The Procter & Gamble Company | Process for preparing and/or purifying amido acid phenyl ester sulfonates |
-
1999
- 1999-11-25 DE DE1999156863 patent/DE19956863A1/de not_active Withdrawn
-
2000
- 2000-11-14 EP EP00974530A patent/EP1232142A1/de not_active Withdrawn
- 2000-11-14 WO PCT/EP2000/011221 patent/WO2001038298A1/de not_active Application Discontinuation
- 2000-11-14 AU AU12798/01A patent/AU1279801A/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0402047A1 (de) * | 1989-06-06 | 1990-12-12 | E.I. Du Pont De Nemours And Company | Verfahren zur Herstellung von Phenylestern substituierter Säuren |
WO1995007882A1 (en) * | 1993-09-14 | 1995-03-23 | The Procter & Gamble Company | Synthesis of amido acids from carboxylic acid esters and amino acid salts |
WO1996028417A1 (en) * | 1995-03-15 | 1996-09-19 | The Procter & Gamble Company | Synthesis of bleach activators |
US5650527A (en) * | 1995-06-05 | 1997-07-22 | Eastman Chemical Company | Preparation of amido ester compounds |
WO1999009004A2 (en) * | 1997-08-20 | 1999-02-25 | The Procter & Gamble Company | Process for preparing and/or purifying amido acid phenyl ester sulfonates |
Also Published As
Publication number | Publication date |
---|---|
EP1232142A1 (de) | 2002-08-21 |
DE19956863A1 (de) | 2001-06-21 |
AU1279801A (en) | 2001-06-04 |
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