EP1656105A1 - Bei verdünnung dick werdende flüssige zusammensetzungen und herstellungsverfahren dafür - Google Patents

Bei verdünnung dick werdende flüssige zusammensetzungen und herstellungsverfahren dafür

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Publication number
EP1656105A1
EP1656105A1 EP04764233A EP04764233A EP1656105A1 EP 1656105 A1 EP1656105 A1 EP 1656105A1 EP 04764233 A EP04764233 A EP 04764233A EP 04764233 A EP04764233 A EP 04764233A EP 1656105 A1 EP1656105 A1 EP 1656105A1
Authority
EP
European Patent Office
Prior art keywords
dilution
composition
thickener
electrolyte
viscosity
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Withdrawn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
EP04764233A
Other languages
English (en)
French (fr)
Inventor
Quynh Thi-Thuy Unilever R & D Edgewater PHAM
Rajesh Unilever R & D Edgewater PATEL
Michael Unilever Home & Personal Care MASSARO
Joann Unilever R & D Edgewater MATHIAS
Ernest Weatherley Macaulay
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.)
Unilever PLC
Unilever NV
Original Assignee
Unilever PLC
Unilever NV
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
Priority claimed from US10/643,229 external-priority patent/US6919303B2/en
Priority claimed from US10/643,246 external-priority patent/US20050043194A1/en
Application filed by Unilever PLC, Unilever NV filed Critical Unilever PLC
Publication of EP1656105A1 publication Critical patent/EP1656105A1/de
Withdrawn legal-status Critical Current

Links

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
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02Inorganic compounds ; Elemental compounds
    • C11D3/04Water-soluble compounds
    • C11D3/046Salts
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A61K8/20Halogens; Compounds thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A61K8/23Sulfur; Selenium; Tellurium; Compounds thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/39Derivatives containing from 2 to 10 oxyalkylene groups
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/73Polysaccharides
    • A61K8/731Cellulose; Quaternized cellulose derivatives
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/84Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
    • A61K8/86Polyethers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00Preparations for care of the skin
    • A61Q19/10Washing or bathing preparations
    • 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
    • C11D1/74Carboxylates or sulfonates esters of polyoxyalkylene glycols
    • 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
    • C11D17/00Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0008Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap compositions
    • C11D17/003Colloidal solutions, e.g. gels; Thixotropic solutions or pastes

Definitions

  • the present invention relates to liquid cleansing compositions which have a viscosity which allows them to readily pour from a bottle or container, but which viscosity increases during dilution/rinsing.
  • the invention also relates to a process for lowering level of salt required for producing dilution thickening effect using associative thickeners.
  • Compositions comprising such thickeners are characterized by a cohesive film" forming on treated skin which, in turn, deters rinsability, as measured by a rinse retention test, and allows for enhanced ease of spreading.
  • Dilution thickened compositions typically will form a film on the skin which lacks cohesion. As such, the film will dissolve and quickly wash away. As such, the dilution thickening compositions are generally perceived as readily rinsable and difficult to spread.
  • an associative thickener e.g., hydrophobically modified PEG such as PEG-200 glyceryl tallowate, such as Rewoderm ® LIS75 or PEG-7 glyceryl cocoate
  • the film on the skin is far more cohesive, thereby leading to reduced rinsability and greater spread on the cleansed surface. This in turn permits consumer to use less product and offers sensory benefit, both with and without use of additional applicator/implement during use.
  • WO 94/16680 to Unilever discloses aqueous dilution thickening, concentrated liquids comprising 20 % to 60 % surfactant other than soap or primary alcohol sulphate.
  • the compositions are said to form a low viscosity, lamellar phase in the undiluted product and, when diluted, to form into a more viscous rod or hexagonal phase.
  • compositions of the subject invention do not require such high levels of surfactant (i.e., in the ⁇ 680 reference it is combination of surfactant and electrolyte which form initially low viscosity lamellar phase) because, it is believed, dilution thickening occurs by a different mechanism, i.e., combination of electrolyte/salt and hydrophobically modified associative thickener forming a "film" which will dilution thicken rather than surfactant and electrolyte lamellar phase which will dilution thicken.
  • hydrophobically modified associative thickeners of the invention or of the effect of such thickeners in lowering level of salt required for dilution thickening, namely enhanced rinse retention and ease of spreadability based on the synergistic combination of the associative thickener and electrolyte.
  • Canadian Patent No. 2,211,313 also discloses compositions which have been oversalted and increase in viscosity upon dilution.
  • U.S. Patent No. 6,427,177 to Williams et al . entitled “A Separating Multiphase Personal Wash Compositions in a Transparent or Translucent Package” discloses a bi-phasic or multi-phasic liquid in which, in one of the phases, can be found high levels of electrolyte and an associate thickener.
  • compositions of the reference are multi-phasic before dilution, and may or may not be mono-phasic upon dilution. They also require that much higher levels of electrolyte be used in order to form the biphasic in the first place.
  • compositions of the subject invention are single phase compositions prior to dilution.
  • compositions comprising: (1) 5 % to 30 % by wt. of a surfactant or surfactants for cleansing the skin; (2) an amount of electrolyte from about 2 % to an upper level defining a boundary between mono- phasic and multi-phasic, said upper boundary preferably being less than about 9 %, more preferably 6 % or less; (3) 0.5 % to 7 %, preferably 1 % to 5 % by wt . associative thickener; (4) 0 to 15 % by wt., preferably 1 % to 10 % by wt. hydrotroping compound; and (5) 45 % to 95 % by wt. water,
  • said composition has viscosity upon dilution, which is greater than viscosity prior to dilution; wherein said composition has rinse retention of greater than 30 % after 10 minutes as measured by tested sample retained on a test slide as function of rinsing time; and wherein, upon dilution, said composition remains in a single phase .
  • Isotropic liquids comprising a combination of electrolyte salt and hydrophobically modified associative thickener have been found to pour readily out of containers, and thicken upon rinsing. Also, presumably because of a cohesive film formed on the skin (the applicants do not wish to be bound by theory in this regard) , they both readily spread on and stay on the skin, as measured in a rinse retention test.
  • the invention relates to a process for making single phase dilution thickening compositions comprising electrolyte.
  • a process for making single phase dilution thickening compositions comprising electrolyte.
  • applicants have found one can lower level of salt/electrolyte required to obtain dilution thickening effect.
  • the invention also relates to single phase dilution thickening compositions both electrolyte and associative thickener. The two act synergistically to lower level of salt required for thickening to provide high viscosity retention and to provide a cohesitivity perceived by consumers as improved retention.
  • FIG. 1 describes the effects of varying levels of salt on dilution thickening compositions without the associative polymer of the invention. Effects of MgS0 4 and NaCl on formulations containing 16% S ES, 3% CAPB, 0% Rewoderm LIS75, and 0% PEG400. As seen, dilution thickening on the monophasic composition begins at about 5 % salt (by contrast, when associative polymer of the invention is used, point of which dilution thickening occurs shifts left or downwards, i.e., less salt is needed);
  • FIG. 2 describes the effect of MgS0 4 salt on the clear, monophasic compositions of the invention with associative polymer. Effect of MgS0 4 concentration neat and diluted samples of monophasic and biphasic formulations (16% SLES, 3% CAPB, 4% Rewoder LIS 75, 11% PEG400) . MgS0 4 concentration labels are of the neat samples. As seen, the polymer shifts dilution thickening phenomena to 2 % salt in single phase liquids (by contrast, compositions of Williams et al . , for example, are biphasic and will presumably have higher levels of salt) ;
  • FIG. 3 describes the effect of associative polymer on absolute viscosity as a function of dilution ratio
  • - Figure 4 describes the effect of various salts (all at 4 % concentration) on dilution thickening. As seen, some salts are more effective than others.
  • Dilution thickening is generally defined as any diluted sample having a viscosity greater than that of a neat product (100:0 product to water). Generally, using relatively large amounts of salt (e.g., > 5 %) the effect is achieved. This can be seen, for example, in Figures 1(a) and 1 (b) where formulations comprising surfactants and varying levels of MgS0 4 or NaCl show dilution thickening behavior (at 66:33 dilution) beginning at 5 % salt level.
  • the compositions of the invention generally will comprise less than 9 % salt, preferably less than 6 % salt. It should be noted that the only real upper limit is that there be less electrolyte than the amount which would induce formation of biphasic since one of the ways in which compositions of the invention distinguish over Williams is that they are not biphasic.
  • compositions of the invention are also higher.
  • the thickener imparts higher viscosity throughout the dilution process and maintains the effect of the dilution action.
  • This is seen in Figure 3. That is, for example, without thickener at 5 % MgS0 , the absolute viscosity drops sharply after about a 50:50 dilution ratio. With 4 % Rewoderm LIS75 at the same salt concentration, dilution thickening is observed up to 40:60 dilution, and the drop off is more gradual. The overall viscosities of the samples with thickener were also higher.
  • the present invention relates to novel, single phase, isotropic, liquid composition
  • novel, single phase, isotropic, liquid composition comprising: (1) 5 % to 30 %, preferably 8 % to 25 % by. wt. surfactant or surfactants; (2) from about 2 % electrolyte to an upper level amount which is both below about 9 % and not high enough to induce formation of biphasic, preferably, this is below about 8 %, more preferably below about 6 % by wt . electrolyte; (3) 0.5 % to 7 %, preferably 1 % to 5 % by wt. hydrophobically modified, preferably although not necessarily nonionic associative thickener; (4) 0 to 15 %, preferably 1 % to 10 % by wt.
  • hydrotroping compound and (5) 45 % to 95 % by wt . water, wherein, said composition has viscosity upon dilution which is greater than viscosity prior to dilution; wherein said composition has rinse retention of greater than 30 % after 10 minutes as measured by a sample retained on a test slide as a function of rinsing time; and wherein, upon dilution, said composition remains in a single phase.
  • the invention further relates to a process for lowering level of salt required to obtain dilution thickening, when using monophasic liquid composition, by utilizing associative thickener.
  • compositions of the invention should contain 5 % to 30 % by wt. total composition of one or more anionic, amphoteric or nonionic surfactant.
  • Anionic, amphoteric, nonionic surfactant or mixtures thereof may be used according to the present invention.
  • the anionic surfactants which are suitable for use according to the present invention include alkyl sulphates, ether alkyl- sulphates, alpha olefin sulphonate, sulphosuccinates, soaps, N-acyl sarcosinates, N-acyl glutamates, N-acyl polypeptide condensates, acyl isethionates, N-acyl methyl taurates, alkyl benzene sulphonates, alcohol sulphates and phosphate esters among other.
  • anionic surfactants are sodium lauryl sulphate, triethanolamine lauryl sulphate, ammonium lauryl sulphate, ammonium ether lauryl sulphate, sodium ether lauryl sulphate, soap, sodium xylene sulphate, sodium sulphosuccinate, sodium olefin, C 14 -C 6 sulphonate, MEA disodium cocoamido sulphosuccinate, sodium benzene sulphonate, sodium cocyl isethionate amongst others.
  • the anionic surfactant preferably includes an ether alkyl sulphate of general formula (I) : R-0-(CH 2 -CH 2 0) n S0 3 - (I)
  • n 1 to 5 and R is Cs-Cis, preferably C12
  • amphoteric surfactants which may be used according to the present invention include alkyl glycinates and propionates, carboxy glycinates, alkyl betaines, alkyl imidazolines sulpho betaines, alkyl polyamino carboxylates, alkyl-amino/iminopropionates and poly ampho carboxy- glycinates, amongst others.
  • Preferred examples of amphoteric surfactants are coco-amido-propyl-betaine, sodium-coco-amphocarboxy-glycinate, coco-a ido, sulpho betaine, coco-ethoxylated MEA, and alkyl-dimethyl-betaine amongst others.
  • the preferred amphoteric surfactants are alkyl-amido-propyl betaines of general formula (II) :
  • R has the same meaning as in Formula (I) .
  • alkyl-amido propyl- betaine is coco-amido-propyl-betaine wherein R is a chain of coco fatty acid with 12 carbon atoms.
  • nonionic surfactants which may be used according to the present invention include the polyalkoxylated fatty alcohols and acids and their esters, alkanolamides, polyalkoxylated and ethoxylated alkanolamides, glycosides and alkyl- polyglycosides, and long chain ethoxylated amines, alkyl- a ines, amine-oxides, polysorbate, nonoxinols, and polyoximerts amongst other.
  • nonionic surfactants include polysorbate 20, nonoxinon-12,polyethylene-24 lauric acid, coco MEA, and cetyl isooctanoate, amongst others.
  • a preferred nonionic surfactant is the amino oxides of general formula (III) :
  • R is a C 2 -20 alkyl group and R and R are C1- 4 chain alkyls
  • the typical concentration of surfactant in the compositions of the present invention lies between 5 % and 30 % by weight based upon the total weight of the composition, preferably between 8 % and 25 % by weight, most preferably between 10 % and 20 % by weight.
  • electrolytes organic and inorganic
  • halides of alkaline metals, alkaline earth metals, ammonium and other metals, such as aluminum and zinc halides of alkaline metals, alkaline earth metals, ammonium and other metals, such as aluminum and zinc
  • sulphates and phosphates of alkaline metals, alkaline earth metals, ammonium and other metals such as aluminum and zinc sulphates and
  • Preferred examples of electrolytes used according to the present invention are: sodium chloride, potassium chloride, sodium sulphate, potassium sulphate, magnesium chloride, magnesium sulphate, zinc sulphate, ammonium chloride and MEA chloride among others .
  • the salt/electrolyte should be used in amount below the amount which would cause it to become biphasic. This depends on the salt and generally would be expected to be below about 9 % (again depending on whether inclusion will precipitate formation of biphasic) , preferably below about 6 % .
  • the level of salt generally will be about 2 % to about 6 % although, as noted, the upper limit is defined in reality only as that amount which will cause formation of multiphasic from the monophasic state.
  • particularly preferred dilution thickening salts include potassium and sodium chloride.
  • Figure 4 shows the viscosities of the neat and diluted samples containing various salts .
  • % salt the neat samples containing ZnSC> 4 , MgS ⁇ 4 , and a 2 S ⁇ appeared most viscous.
  • MgCl 2 , KCl, and NaCl have little thickening effect on the initial composition of SLES, CAPB, PEG400, and Rewoderm LIS75.
  • the monovalence salts KCl and NaCl produced tremendous increases in viscosities to form very viscous gels.
  • ZnS0 4 and MgS0 4 were also effective at producing large dilution thickening.
  • At least 0.5 % thickener is needed, preferably at least 2 %.
  • the associative thickeners are essentially hydrophobically (e.g., tallowate) modified hydrophilic (e.g., water soluble polyalkylene glycol) backbone. While not wishing to be bound by theory, the mechanism for viscosity enhancement is believed due to interactions or associations of the hydrophobic groups with each other and/or with hydrophobic components of the formulations.
  • the polymers are preferably nonionic and can be used in high salt environments.
  • examples of associative ® ® thickeners similar to Rewoderm LIS75 are Rheodol ® (tristearate modified PEG) and Elfacos T212 (carbamic acid diester of the polyoxypropylene, polyoxyethylene ether of the fatty alcohols derived from palm kernel oil) .
  • Other- associative thickeners include ethylene glycol ether of ethylene cellulose (hydrooxyethyl ethylcellulose) such as Elfacos CD481; or ethyl glycol ether of methyl cellulose, ® such as Methocel 40-10.
  • compositions of the invention may contain hydrotropes including but not limited to short chain monohydric or dihydric alcohols, xylene sulphonate and hexylene glycol whose purpose is to avoid the formation of liquid crystal phases resulting from the separation of the surfactant material into the upper phase and hence increasing its apparent concentration.
  • hydrotropes including but not limited to short chain monohydric or dihydric alcohols, xylene sulphonate and hexylene glycol whose purpose is to avoid the formation of liquid crystal phases resulting from the separation of the surfactant material into the upper phase and hence increasing its apparent concentration.
  • compositions of the invention may contain a variety of optional ingredients such as set forth below:
  • the compositions may comprise benefit agents.
  • Benefit agent may be any material that has potential to provide an effect on, for example, the skin.
  • the benefit agent may be water insoluble material that can protect, moisturize or condition the skin upon deposition from compositions of invention.
  • These may include silicon oils and gums, fats and oils, waxes, hydrocarbons (e.g., petrolatum) , higher fatty acids and esters, vitamins, sunscreens. They may include any of the agents, for example, mentioned at column 8, line 31 to column 9, line 13 of U.S. Patent No. 5,759,969, hereby incorporated by reference into the subject application.
  • the benefit agent may also be a water soluble material such as glycerin, enzyme and - or ⁇ -hydroxy acid either alone or entrapped in an oily benefit agent.
  • the benefit agent may be found in either the upper or the lower layer depending on its solubility and partition coefficient, for example, oil may partition into the upper layer while more water soluble agents (e.g., ⁇ -hydroxyacids) may go into the lower.
  • oil may partition into the upper layer while more water soluble agents (e.g., ⁇ -hydroxyacids) may go into the lower.
  • compositions may comprise perfumes, sequestering agents such as EDTA or EHDP in amounts 0.01 % to 1 %, preferably 0.01 % to 0.05 %; coloring agents, opacifiers and pearlizers such as zinc stearate, magnesium stearate, Ti0 2 , EGMS (ethylene glycol monostearate) or styrene/acrylate copolymers .
  • the compositions may further comprise antimicrobials such as 2-hydroxy 4,2' 4' trichlorodiphenylether (DP300), 3,4,4'- trichlorocarbanilide, essential oils and preservatives such as dimethyl hydantoin (Glydant XL 1000) , parabens, sorbic acid etc.
  • compositions may also comprise coconut acyl mono- or diethanol amides as suds boosters, and strongly ionizing salts such as sodium chloride and sodium sulfate may also be used to advantage.
  • Antioxidants such as, for example, butylated hydroxytoluene (BHT) may be used advantageously in amounts of about 0.01% or higher if appropriate.
  • BHT butylated hydroxytoluene
  • Cationic conditioners which may be used including Quatrisoft
  • compositions of the invention meet the following requirements .
  • compositions upon dilution, has viscosity greater than that prior to dilution.
  • composition must be single phase before dilution.
  • a 75 % concentrated surfactant base was first prepared with SLES, CAPB, and perfume. The 25 % hole or deficit was reserved for later addition of water, thickener and salt. The final composition contained 16 % SLES, 3 % CAPB and 1 % perfume.
  • a typical formulation of the invention is as follows :
  • viscosity measurements were conducted on equilibrated samples.
  • the formulations were first mixed with deionized water at appropriate ratios by weight, using magnetic stir bars or wrist shaker, and allowed to equilibrate for 4 hours to overnight, all at room temperature. Shear sweeps were then done as described above .
  • compositions s follows: SLES 16 % CAPB 3 % Thickener 0 PEG 400 0
  • compositions having formulation as follows:
  • compositions SLES 16 % CAPB 3 % Rewoderm LIS75 4 % PEG 400 11 % Salt (Varying) 4 %
  • FIG. 4 shows the viscosities of the neat and diluted samples containing various salts.
  • the neat samples containing ZnS0 4 , MgSU 4 , and a 2 S0 4 appeared most viscous.
  • MgCl 2 , KCl, and NaCl have little thickening effect on the initial composition of SLES, CAPB, PEG400, and Rewoderm LIS75.
  • the monovalence salts KCl and NaCl produced tremendous increases in viscosities to form very viscous gels.
  • ZnS0 and MgS0 4 were also effective at producing large dilution thickening.
  • Rewoderm LIS75 Comparing the neat samples, 0 % Rewoderm LIS75 has a viscosity of 21,500 centipoises, while those containing 1 % to 4 % Rewoderm LIS75 have viscosities between 11,500 and 21,700 centipoises.
  • the polymers that clearly exhibited dilution thickening behavior were Rewoderm LIS75 and LIS80, Elfacos T212 and CD481, Rheodol, Varonic LIS80, and Methocel 40-100.
  • the Acrysol RM825 appeared to maintain or even slightly increase viscosity.
  • the non-hydrophobically modified polymers Jaguar C13S and xanthan gum) did not thicken upon dilution. It appeared that the associative nature of the polymers aid in the dilution thickening phenomenon.
  • Table 1 lists results for the samples tested.
  • the samples each contained 16 % SLES, 3 % CAPB, and 0.0125 % of a water soluble blue dye (Acid Blue 9 or Erioglaucine disodium salt) ; the amount of salt, thickener, and PEG400 were varied; all these compositions were clear isotropic monophasic.
  • Rinse retention was calculated as a percent of the sample remaining on the slide after "rinsing", or submerged in the stirred water, for fixed amounts of time. Although excess water on the slides was dried off before weighing, any water absorbed by the samples was not removed. Hence, some of the percentages can be greater than 100 % (e.g. sample 6B) .

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
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  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Emergency Medicine (AREA)
  • Dermatology (AREA)
  • Dispersion Chemistry (AREA)
  • Detergent Compositions (AREA)
  • Cosmetics (AREA)
  • Primary Cells (AREA)
EP04764233A 2003-08-18 2004-08-13 Bei verdünnung dick werdende flüssige zusammensetzungen und herstellungsverfahren dafür Withdrawn EP1656105A1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/643,229 US6919303B2 (en) 2003-08-18 2003-08-18 Process for lowering level of salt required for dilution thickening
US10/643,246 US20050043194A1 (en) 2003-08-18 2003-08-18 Liquid compositions which thicken on dilution comprising electrolyte and associative thickener
PCT/EP2004/009246 WO2005016304A1 (en) 2003-08-18 2004-08-13 Liquid compositions which thicken on dilution and methods for producing the same

Publications (1)

Publication Number Publication Date
EP1656105A1 true EP1656105A1 (de) 2006-05-17

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Country Status (8)

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EP (1) EP1656105A1 (de)
AR (1) AR045273A1 (de)
AU (1) AU2004264679B2 (de)
BR (1) BRPI0412980A (de)
CA (1) CA2534923A1 (de)
MX (1) MXPA06001902A (de)
MY (1) MY134437A (de)
WO (1) WO2005016304A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107922547A (zh) * 2015-09-02 2018-04-17 陶氏环球技术有限责任公司 稀释增稠组合物

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US7511003B2 (en) 2002-11-04 2009-03-31 The Procter & Gamble Company Striped liquid personal cleansing compositions containing a cleansing phase and a separate benefit phase with improved stability
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MX2007007312A (es) 2005-04-13 2007-07-09 Procter & Gamble Composiciones multifase estructuradas y suaves para la limpieza personal.
US7273840B2 (en) 2005-07-14 2007-09-25 Conopco, Inc. Method for providing dilution thickening using polydextrose based biphasic compositions
EP2094827B2 (de) 2006-12-20 2017-09-13 Unilever N.V. Geschirrspülzusammensetzung
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AR045273A1 (es) 2005-10-19
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BRPI0412980A (pt) 2006-10-03
MXPA06001902A (es) 2006-05-17
MY134437A (en) 2007-12-31
AU2004264679B2 (en) 2009-03-19
CA2534923A1 (en) 2005-02-24

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