EP0814150A2 - Mélanges de surfactifs de sulphonates d'acyloxyalcanes et d'esters d'acides gras - Google Patents

Mélanges de surfactifs de sulphonates d'acyloxyalcanes et d'esters d'acides gras Download PDF

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Publication number
EP0814150A2
EP0814150A2 EP97108097A EP97108097A EP0814150A2 EP 0814150 A2 EP0814150 A2 EP 0814150A2 EP 97108097 A EP97108097 A EP 97108097A EP 97108097 A EP97108097 A EP 97108097A EP 0814150 A2 EP0814150 A2 EP 0814150A2
Authority
EP
European Patent Office
Prior art keywords
fatty acid
alkyl ester
acyloxyalkanesulfonate
content
acid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP97108097A
Other languages
German (de)
English (en)
Other versions
EP0814150A3 (fr
Inventor
Bernd Dr. Nestler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Clariant Produkte Deutschland GmbH
Original Assignee
Clariant GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Clariant GmbH filed Critical Clariant GmbH
Publication of EP0814150A2 publication Critical patent/EP0814150A2/fr
Publication of EP0814150A3 publication Critical patent/EP0814150A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66Non-ionic compounds
    • C11D1/83Mixtures of non-ionic with anionic compounds
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02Anionic compounds
    • C11D1/04Carboxylic acids or salts thereof
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02Anionic compounds
    • C11D1/12Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/28Sulfonation products derived from fatty acids or their derivatives, e.g. esters, amides
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66Non-ionic compounds
    • C11D1/667Neutral esters, e.g. sorbitan esters

Definitions

  • Acyloxyalkanesulfonates are anionic surfactants, which are mainly used in solid cleaning agents such as bar soaps. These surfactants are usually prepared by the process of so-called direct esterification by reacting sodium isethionate with an excess of a free fatty acid. In this reaction, the viscosity of the reaction mixture increases sharply with increasing esterification. It has therefore proven necessary to add so-called consistency regulators so that the highly viscous reaction mass remains sufficiently stirrable. Paraffins (EP-A-0 246 471) and free fatty acids (WO 94/26866) are known as such consistency regulators.
  • fatty acid esters as consistency regulators. According to the process described there, however, the consistency regulator is distilled as far as possible after the esterification reaction has ended and the end product is essentially free of fatty acid esters.
  • EP-A-0 262 420 also describes the use of fatty acid esters as consistency regulators, but in this case they can remain in the end product. Only fatty acid esters that come from alcohols with at least three carbon atoms are suitable as fatty acid esters.
  • the present invention relates to surfactant mixtures consisting essentially of acyloxyalkanesulfonate, fatty acid and fatty acid C 1 -C 2 alkyl ester, the content of fatty acid C 1 -C 2 alkyl ester in the surfactant mixture being 0.1 to 10% by weight, based on the content of acyloxyalkanesulfonate.
  • the acyloxyalkanesulfonates contained in the surfactant mixtures according to the invention preferably have the formula R 1 COOR 2 SO 3 M wherein R 1 is C 5 -C 31 alkyl or C 5 -C 31 alkenyl, R 2 C 2 -C 4 alkylene or C 2 -C 4 alkenylene, preferably C 2 alkylene, and M is an alkali metal, alkaline earth metal -, Ammonium or substituted ammonium ion means.
  • the alkyl and alkenyl groups R 1 can be straight-chain or branched.
  • the group R 1 CO is derived from fatty acids such as, for example, caproic acid, capric acid, lauric acid, myristic acid, stearic acid, arachic acid, oleic acid, linoleic acid, linolenic acid, coconut fatty acid and tallow fatty acid and mixtures thereof.
  • R 2 is preferably -CH 2 CH 2 -.
  • acyloxyalkanesulfonates are prepared by processes known per se by esterification of at least one fatty acid with at least one hydroxyalkanesulfonate (direct esterification). Such a method is described for example in EP-A-0 585 071 (US-A-5 384 421). An excess of fatty acid and the salt of the hydroxyalkanesulfonic acid are reacted in the presence of an esterification catalyst at a temperature of 180 to 240 ° C. with the simultaneous removal of water present.
  • the excess of free fatty acid is distilled off to a greater or lesser extent.
  • the coconut fatty acid has an unpleasant smell, so that it is necessary to remove the coconut fatty acid completely. It is therefore preferred to work in such a way that a second fatty acid, such as stearic acid, which has a higher boiling point than coconut fatty acid, is added after the reaction has ended. and then distills off the lower boiling unwanted free coconut fatty acid.
  • the presence of free fatty acid in the end product is desirable because the mixture of fatty acid and acyloxyalkanesulfonate has a better consistency and is easier to process than the acyloxyalkanesulfonate alone.
  • the amount of remaining fatty acid is generally 1 to 50 wt .-%, based on the content of acyloxyalkanesulfonate.
  • the addition of a second fatty acid can be dispensed with and the excess of free fatty acid is distilled practically completely from the reaction mixture in a thin-film evaporator at about 250 to 260 ° C. This is followed by the addition of the fatty acid C 1 -C 2 alkyl ester.
  • the fatty acid C 1 -C 2 alkyl esters are primarily the methyl esters; the fatty acid residue is essentially derived from fatty acids with C 5 -C 31 , preferably C 8 -C 16 alkenyl groups.
  • the amount of fatty acid alkyl ester is 0.1 to 10, preferably 0.5 to 5 wt .-%, based on the proportion of acyloxyalkanesulfonate.
  • the fatty acid alkyl ester is added by mixing the solid reaction product with the fatty acid alkyl ester in suitable mixing devices, for example in a kneader, until the mixture is homogeneous.
  • the fatty acid alkyl ester can also be added to the finished reaction product in the liquid melt, ie before cooling, or the already cooled product can be melted again and then mixed with the fatty acid alkyl ester. In the latter two cases, the final assembly is usually carried out using a scale roller or a cooling belt.
  • the reaction product that is obtained in the reaction of fatty acid and isethionate contains, depending on the respective production conditions usually about 50 to 99% by weight of acyloxyalkanesulfonate.
  • the rest consists essentially of free fatty acid.
  • the free fatty acid can also be almost completely distilled off from the reaction mixture and thus products which are essentially free of fatty acid are obtained.
  • the surfactant mixtures according to the invention obtained in this way are processed further in the customary manner to bar soaps.
  • SCID I and SCID II sodium cocoyl isethionate
  • basic soap 150 g of stearic acid
  • water 150 g of water
  • the same mixture of sodium cocoyl isethionate, basic soap, stearic acid and water was melted and the fatty acid alkyl ester was mixed in the melt, the percentage amounts of fatty acid alkyl ester given in the table below being based on the amount of sodium cocoyl isethionate (100%). In both cases the temperature was measured at which the melt could still be stirred.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Detergent Compositions (AREA)
  • Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
EP97108097A 1996-05-23 1997-05-20 Mélanges de surfactifs de sulphonates d'acyloxyalcanes et d'esters d'acides gras Withdrawn EP0814150A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1996120748 DE19620748A1 (de) 1996-05-23 1996-05-23 Tensidmischungen aus Acyloxialkansulfonaten und Fettsäureester
DE19620748 1996-05-23

Publications (2)

Publication Number Publication Date
EP0814150A2 true EP0814150A2 (fr) 1997-12-29
EP0814150A3 EP0814150A3 (fr) 1999-02-10

Family

ID=7795105

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97108097A Withdrawn EP0814150A3 (fr) 1996-05-23 1997-05-20 Mélanges de surfactifs de sulphonates d'acyloxyalcanes et d'esters d'acides gras

Country Status (4)

Country Link
EP (1) EP0814150A3 (fr)
JP (1) JPH1053793A (fr)
BR (1) BR9703374A (fr)
DE (1) DE19620748A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7659235B2 (en) * 2006-12-20 2010-02-09 Conopco, Inc. Stable liquid cleansing compositions which may be prepared using fatty acyl isethionate surfactants
US7674759B2 (en) * 2007-09-05 2010-03-09 Conopco, Inc. Stable liquid cleansing compositions containing high level of fatty acid isethionate surfactant products having more than 10 wt. % of fatty acid/fatty soap content
US7807612B2 (en) * 2007-12-18 2010-10-05 Conopco, Inc. Fatty acyl isethionate product-containing liquid cleansing compositions stabilized with mixture of long chain and short chain fatty acids/fatty soaps

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1165608B (it) * 1978-01-19 1987-04-22 Unilever Nv Barra detergente, particolarmente per lavaggio personale
DE3442579C2 (de) * 1984-11-22 1986-11-27 Akzo Gmbh, 5600 Wuppertal Verfahren zur Herstellung von oberflächenaktiven Kondensationsprodukten
US5185101A (en) * 1991-08-15 1993-02-09 Dr. Gene, Inc. Compositions containing salts of acyloxyalkanesulfonates
GB9310323D0 (en) * 1993-05-19 1993-06-30 Unilever Plc Improvements relating to soap bars

Also Published As

Publication number Publication date
JPH1053793A (ja) 1998-02-24
BR9703374A (pt) 1998-09-15
DE19620748A1 (de) 1997-11-27
EP0814150A3 (fr) 1999-02-10

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