Classifications

• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/02—Anionic compounds
  • C11D1/37—Mixtures of compounds all of which are anionic
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/66—Non-ionic compounds
  • C11D1/83—Mixtures of non-ionic with anionic compounds
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/02—Anionic compounds
  • C11D1/04—Carboxylic acids or salts thereof
  • C11D1/06—Ether- or thioether carboxylic acids
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/02—Anionic compounds
  • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
  • C11D1/22—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic compounds
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/66—Non-ionic compounds
  • C11D1/72—Ethers of polyoxyalkylene glycols

Definitions

• the present invention provides a liquid laundry detergent composition.
• it relates to a concentrated liquid laundry detergent composition for use in domestic laundry.
• Laundry liquid formulations containing saturated long chain alkyl ether carboxylates with high degrees of ethoxylation are desirable as they provide enhanced cleaning particularly of sebum soil.
• Saturated long chain alkyl ether carboxylates with high degrees of ethoxylation are solid waxy materials at room temperature.
• the concentrated liquid detergent is a pourable liquid, both for ease of use for the consumer when using the concentrated liquid detergent, or when the concentrated liquid detergent is further processed into a more complex liquid detergent.
• WO 2013/087286 discloses aqueous liquids formulations containing alkyl ether carboxylic acids, betaines, anionic surfactant, non-ionic surfactant for providing softening benefits.
• WO 2014/060235 discloses an aqueous laundry detergent composition
• an aqueous laundry detergent composition comprising (a) nonionic surfactant, (b) anionic surfactant, (c) alkyl ether carboxylic acid or carboxylate salt thereof, and, (d) a polyglucosamine or a copolymer of glucosamine and N-acetylglucosamine; and to its use to soften fabrics.
• the present invention provides a liquid laundry detergent composition comprising:
• the pH of the formulation is from 0.5 to 2.0, more preferably from 0.5 to 1.5.
• a preferred liquid laundry detergent composition comprises:
• Water contents are measured by Karl Fischer Titration. This may be accomplished using an automated Karl Fischer titrators, available from MetroOhm, and Mettler Toledo.
• the pH of the formulation is that of a 1 wt.% solution of the liquid laundry detergent composition dissolved in demineralised water at 293K.
• Room temperature as used herein is defined as 293K.
• the liquid laundry composition comprises from 50 to 80 wt.%, preferably from 55 to 80 wt.%, more preferably from 55 to 75 wt.%, most preferably from 60 to 75 wt.% of the linear alkyl benzene sulfonic acid surfactant. Weights are expressed as the protonated form (i.e. the linear alkyl benzene anionic sulfonic acid form).
• alkali metal salt preferably sodium salt
• triethanolamine preferably triethanolamine
• monoethanol amine salt preferably triethanolamine
• the sodium salt is most preferred.
• non-neutralised acid form is used.
• Weights are expressed as the protonated form.
• the surfactant may be produced by a variety of different routes. Synthesis is discussed in Anionic Surfactants Organic Chemistry edited by H.W. Stache (Marcel Dekker, New York 1996).
• Linear alkyl benzene sulfonic acid may be made by the sulfonation of linear alkyl benzene.
• the sulfation can be carried out with concentrated sulphuric acid, oleum or sulphur trioxide.
• Linear alkyl benzene sulfonic acid produced by reaction of linear alkyl benzene with sulphur trioxide is preferred.
• Linear alkyl benzene may be produced by a variety of routes. Examples include: Benzene may be alkylated with n-alkenes using HF catalyst.
• Benzene may be alkylated with n-alkenes in a fixed bed reactor with a solid acidic catalyst such as Alumosilicate (DETAL process).
• a solid acidic catalyst such as Alumosilicate (DETAL process).
• Benzene may be alkylated with n-alkenes using an aluminium chloride catalyst. Benzene may be alkylated with n-chloroparaffins using an aluminium chloride catalyst.
• the liquid laundry composition comprises from 15 to 45 wt.%, preferably from 15 to 40 wt.%, more preferably from 17.5 to 40 wt.%, most preferably from 20 to 40 wt.% of the alkyl ether carboxylic acid anionic surfactant.
• Weights of alkyl ether carboxylic acid are calculated as the protonated form, R 2 -(OCH 2 CH 2 ) n -OCH 2 COOH, where n is from 10 to 24. They may be used as salt version for example sodium salt, triethanolamine, monoethanol amine salt. The sodium salt is most preferred.
• n may be from 10 to 24, preferably from, 10 to 20, more preferably from 15 to 20.
• Alkyl ether carboxylic acids synthesis is discussed in Anionic Surfactants Organic Chemistry edited by H.W. Stache (Marcel Dekker, New York 1996 ). They may be synthesised via the reaction of the corresponding alcohol ethoxylate with chloroacetic acid or monochloro sodium acetate in the presence of NaOH:- R 2 -(OCH 2 CH 2 ) n -OH + NaOH + ClCH 2 COONa ⁇ R 2 -(OCH 2 CH 2 ) n -OCH 2 COOH + NaCl + H 2 O
• R 2 -(OCH 2 CH 2 ) n -OH may be present, preferably levels of R 2 -(OCH 2 CH 2 ) n -OH are from 0 to 10 wt.% in the alkyl ether carboxylic acid. Low levels of diglycolic acid and glycolic acid may be present as bi products.
• the alkyl ether carboxylic acid may also be synthesised via an oxidation reaction:- R 2 -(OCH 2 CH 2 ) n -O CH 2 CH 2 OH ⁇ R 2 -(OCH 2 CH 2 ) n -OCH 2 COOH
• the oxidation is typically conducted using oxygen as the oxidant under basic conditions in the presence of metal catalyst such as Pd/Pt, as described in DE3135946 ; DE2816127 and EP0304763 .
• the alkyl chain may be linear or branched, preferably it is linear.
• the alkyl chain is preferably selected from CH 3 (CH 2 ) 15 and CH 3 (CH 2 ) 17
• the alkyl ether carboxylic acid is most preferably of the structure: CH 3 (CH 2 ) 17 (OCH 2 CH 2 ) 20 OCH 2 COONa
• Alkyl ether carboxylic acids are available from Kao (Akypo ®), Huntsman (Empicol®) and Clariant (Emulsogen ®).
• the alkyl ether carboxylic acid is preferably used directly form the synthesis without further purification.
• the weight ratio of linear alkyl benzene sulfonic acid surfactant to the alkyl ether carboxylic acid surfactant is preferably from 55:45 to 5:1, more preferably from 1.5:1 to 5:1.
• the weight ratio of linear alkyl benzene sulfonic acid surfactant to the alkyl ether carboxylic acid surfactant may be from 1.5:1 to 4.5:1, for example from 1.5:1 to 4:1; or from 2:1 to 4.5:1; or 2:1 to 4:1; or even 2.5:1 to 4.25:1; or even 2.5:1 to 4:1.
• Water may be absent from the formulation, or present at a level of less than 10 wt.%, preferably less than 9 wt.%. If water is present, then it is present preferably at a level of from 0.01 to 8 wt.%, more preferably from 0.1 to 8 wt.%, most preferably from 1 to 8 wt.%.
• Non-ionic surfactant may be absent from the formulation, or present at a level of less than 20 wt.%, preferably less than 15 wt.%, more preferably less than 12 wt.%. If non-ionic surfactant is present, then it is present preferably at a level of from 0.1 to 20 wt.%, more preferably from 0.1 to 15 wt.%, most preferably from 0.25 to 12 wt.%.
• the non-ionic surfactant has the following structure: R 2 -(OCH 2 CH 2 ) n -OH, wherein: R 2 is selected from saturated C 12 to C 22 linear or branched alkyl chains, preferably C 16 to C 18 linear alkyl chains, and wherein n is selected from 5 to 30, preferably 10 to 20.
• the liquid detergent composition of the invention can be considered a concentrated liquid detergent composition. It may be used directly, or more preferably used as an ingredient to formulate further liquid detergent compositions.
• Such further liquid detergent compositions may comprise further ingredients such as: fatty acids or salts thereof, shading dyes, enzymes (such as lipase, protease, amylase, cellulase), antiredeposition polymers, dye transfer inhibiting polymers, builders, structurants or thickening polymers, sequestrants, perfumes, and/or soil release polymers.
• Second surfactant Phase at 293K linear alkyl benzene anionic sulfonic acid Pourable Liquid inventive Sodium lauryl ether sulfonate with 1 mole of ethoxylation Solid comparative Sodium lauryl ether sulfonate with 3 mole of ethoxylation Soft Gel comparative

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• 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)

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Citations (9)

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• 2017
  • 2017-05-10 EP EP17170422.4A patent/EP3401384A1/de not_active Ceased
• 2018
  • 2018-04-03 EP EP18715655.9A patent/EP3622046B1/de active Active
  • 2018-04-03 WO PCT/EP2018/058430 patent/WO2018206196A1/en unknown
  • 2018-04-03 BR BR112019023389-0A patent/BR112019023389A2/pt not_active Application Discontinuation
  • 2018-04-03 CN CN201880025777.XA patent/CN110520514B/zh active Active
  • 2018-05-09 AR ARP180101210A patent/AR111856A1/es active IP Right Grant
• 2019
  • 2019-09-27 ZA ZA2019/06404A patent/ZA201906404B/en unknown

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