Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/46—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur
  • A61K8/466—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur containing sulfonic acid derivatives; Salts
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/46—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur
  • A61K8/463—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur containing sulfuric acid derivatives, e.g. sodium lauryl sulfate
• • 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
  • C11D1/16—Sulfonic acids or sulfuric acid esters; Salts thereof derived from divalent or polyvalent alcohols
• • 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
  • C11D1/29—Sulfates of polyoxyalkylene ethers
• • 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
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/0005—Other compounding ingredients characterised by their effect
  • C11D3/0089—Pearlescent compositions; Opacifying agents
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q5/00—Preparations for care of the hair
  • A61Q5/02—Preparations for cleaning the hair

Definitions

• This invention relates to a liquid anionic organic synthetic detergent composition which gives good performance and which has a desirable nacreous appearance without the use of opacifiers that afiect stability or act as performance loads.
• the opacifying agent of this inven tion consists essentially of suspended crystals of an undissolved portion of an anionic organic synthetic detergent constituent and thus contributes to, rather than detracts from, the active detergent of the composition.
• Translucent and transparent liquid synthetic detergents are common in the industry, but, from a consumer point of view, it has become desirable to develop an efiicient opaque product which has the appearance of liquefied white or colored bar soap. Opacity in a liquid product increases its sight appeal to the purchaser who associates the opacity with his favorite bar soap, powdered soap, or-hand lotion which he has been accustomed to over the years; a transparent or translucent product does not have this particular appeal.
• opacifiers finely divided organic solids such as wax or stearic acid, and organic liquids such as emulsified fats or oils, adversely affect the sudsing performance of the detergent. dirt particles which the detergent is designed to remove from the fabric and thus create a slightly greater detergency requirement for the product. While some substances such as wax may help produce bubbles, the bubbles are short lived and are unsuitable for dishwashing or laundry sudsing.
• Opaque liquids are difiicult to prepare from the above mentioned opacifiers because the solids must often be very finelyground or finely ground and introduced into the liquid as a paste. Fine grinding is difiicult in the Inactive opacifying particles are similar to r case of some solids, but often is essential to reduce the tendency toward gravitational separation. Many of the opacifiers comomnly used such as titanium oxide and bentonite have a specific gravity greater than that of the vehicle in which the opacifier is suspended. This factor increases the tendency to settle. An opaque product, to be successful, must have a high degree of stability on standing.
• An object of this invention is to provide a quality opaque liquid detergent in which the opacifier is also an active component.
• a further object is to develop an opacifier in a liquid detergent composition which will act compatibly with the rest of the components to form a stable product.
• a further object is to produce a liquid detergent with a desirable opalescent sheen.
• the present invention is based on the. discovery that suspended crystals of a.kyl glyceryl ether sulfonates impart to concentrated liquid synthetic detergent solutions a desirable opaque appearance.
• the aqueous solution of synthetic detergent contains in suspension an alkali metal salt, such as a sodium or potassium salt, of an alkyl glyceryl ether sulfonate having from about 16 to about 18 carbon atoms in the alkyl radical.
• Electrolyte salts which usually accompany anionic organic sulfuric reaction products together with common water soluble organic solvents, can also be present in the detergent solution as more fully hereinafter defined.
• the opacifier is normally suspended in the detergent solution by first dissolving a suitable alkyl glyceryl ether sulfonate salt in the detergent solution at a temperature at which the said salt is substantially completely soluble and then cooling the solution to a temperature, preferably room temperature, at which the alkyl glyceryl ether sulfonate salt is substantially insoluble.
• a suitable composition can also be made by reducing the alkyl glyceryl ether sulionate salt to very small particle form in a colloidal mill and then appropriately suspending such particles in the detergent solution at room temperature, for example.
• the specific gravity of the alkyl glyceryl ether sulfonate salts used as opacifiers in accordance with this invention is about 1.25, which is only slightly higher than the specific gravity of the detergent solutions (about 1.02 to 1.20). Thus, there is but little tendency toward the gravitational separation that is normally encountered in the use of conventional opacifying agents which present a greater specific gravity differential.
• the opacifier is substantially insoluble in the concentrated detergent solution at room temperatures, it becomes dissolved when the detergent solution is diluted to the concentrations normally used in forming a washing solution.
• the opacifiers employed in the instant invention havethe additional advantage of ultimately becoming available as cleansing agents to contribute to the overall detergeney characteristics of the product.
• liquid detergent compositions of this invention contain from about 25% to about 85% water, they are diluted 200 or more fold when added to water to form the conventional washing solution. This dilution is sufficient to effect substantially complete solution of the suspended opacifier of the detergent composition when the temperature of the wash water is within the temperature range normally employed, i.e., from about 90 F. to about 130 F.
• the opacifier dissolves to become a part of the active detergent ingredient.
• plete solution of the alkyl glyceryl ether sulfonate opacifier is desirable for achieving maximum detergency benefit, it has been observed that any undissolved opacifier does not remain completely inert but rather enhances sudsing performance during the washing operation.
• the substantially insoluble alkyl glyceryl ether sulfonates are those with alkyl chain lengths of about C to about C Alkyl glyceryl ether sulfonates with alkyl chain lengths of C or less are too soluble to be used as opacifiers but are, of course, used extensively as the substantially complete dissolved primary detergent in the present compositions.
• Single alkyl glyceryl ether sulfonates with an alkyl radical of 16 or 18 carbon atoms can be employed in this invention; but it is ordinarily more Although comsodium sulfite and bisulfite to produce the sodium alkyl glyceryl ether sulfonate.
• comsodium sulfite and bisulfite to produce the sodium alkyl glyceryl ether sulfonate.
• To produce the potassium alkyl glyceryl ether sulfonate the corresponding potassium salts are used in the processes.
• the basic anionic synthetic detergents referred to in this invention are the substantially completely watersoluble (at room temperature) alkali metal (to be interpreted as including ammonium) salts of organic sulfuric recation products having in their molecular structure alkyl radicalshaving from'about 8 to about 18 carbon atoms and radicals selected from the group consisting of sulfonic acid and sulfurici acid ester radicals.
• the alkali metal salts of the sulfuric reaction products which find greatest utility are those which have from 10 to 14 carbon atoms and predominantly 12 carbon atoms in the alkyl radical, but since other constituents of the detergent molecule can be varied to increase the degree of solubility, the number of carbon atoms in the alkyl radical can also be adjusted upwardly in such instances to as high as 18, for example.
• Important examples of the synthetics which may be used in the composition of the present invention are the sodium or potassium lauryl glyceryl ether sulfonates made by the processes described above; sodium or potassium alkyl convenient and less expensive to use a mixture of such compounds in which the alkyl radicals are derived from readily available fatty alcohol mixtures.
• the higher alcohols derived from the reduction of tallow is a preferred source for the production of the opacifier used in the composition of this invention because they contain predominantly 16 and 18 carbon atoms.
• Another source is the higher molecular weight fraction from a fatty alcohol mixture derived from coconut oil or palm kernel oil. Such mixtures are commonly fractionated in the industry to produce a fraction consisting predominantly of C and C alcohols which have outstanding utility in the preparation of the more soluble synthetic detergents.
• a by-product of such fractionation is a mixture of alcohols commonly referred to as Stenol, a fatty alcohol mixture consisting predominantly of C and C
• Stenol a fatty alcohol mixture consisting predominantly of C and C
• the alkyl glyceryl ether sulfonates which are suitable for the opacifier of the composition of this invention and the more soluble alkyl glyceryl ether sulfonates which can be used as an active synthetic detergent of the composition are produced in the same manner.
• the first step consists of reacting fatty alcohols with epichlorohydrin to produce alkyl chloroglyceryl ethers.
• fatty alcohols with alkyl radicals of predominantly 16 or 18 carbon atoms are used; fatty alcohols with alkyl radicals chiefly of 12 or 14 carbon atoms are used in the preparation of the more readily water soluble anionic synthetic detergents.
• the alkyl chloroglyceryl ethers of step one are then sulfonated to produce the final alkyl glyceryl ether sulfonates.
• Two sulfonation methods are commonly used. One method consists of reacting the alkyl chloroglyceryl ethers with sodium sulfite. The other method involves treating the alkyl chloroglyceryl ethers with a strong caustic soda solution which forms alkyl glycidyl ethers which in turn are separated from the salt-solution and treated with benzene sulfonates especially those of the types described in U.S.
• Patents 2,220,099 and 2,477,383 in which the alkyl groups contain from about 9 to about 15 carbon atoms; sodium, potassium or ammonium alkyl sulfates, especially those derived by sulfation of higher alcohols produced by reduction of glycerides of coconut oil; sodium coconut oil fatty acid monoglyceride sulfates and sulfonates; sodium, potassium and ammonium salts of sulfuric acid esters of the reaction product of one mole of coconut oil fatty alcohol and about 3 moles of ethylene oxide or of one mole of tallow fatty alcohol and about 10 moles of ethylene oxide; alkali metal salts of alkyl ethylene oxide ether sulfate which have an average of one unit of ethylene oxide per molecule; the reaction product of fatty acids esterified with isethionic acid and neutralized with sodium hydroxide where, for example, the fatty acids are derived from coconut oil; alkali metal salts of fatty acid amide of a methyl tau
• the synthetic detergents preferred for use as the basic active cleaning agent in the compositions of this invention include the water soluble alkali metal salts, such as the sodium, potassium, or ammonium alkyl ethylene oxide ether sulfates which have an average of three ethylene oxide units per molecule, alkyl sulfates, alkyl glyceryl ether sulfonates and alkyl benzene sulfonates and mixtures thereof.
• the basic synthetic detergents can be present in the liquid composition of this invention in percentages of about 5% to 45% by weight although the preferred range is about 15% to 30%.
• Sufficient alkyl glyceryl ether sulfonate opacifying agent is dissolved in a heated detergent mixture so that from 0.5% to about 10% by weight is insoluble at room temperature. 0.5% of opacifier is about the minimum amount permissible for a satisfactory opaque product; heating to about F. dissolves the opacifier at such concentrations.
• the presence of about 3% of the in soluble opacifier at room temperature is preferred to re.- tain a proper opacity up to about Above this .facture. .is one of the least soluble of the salts (approximately 6% s temperature this amount of opacifiercompletely dissolves.
• the top limit of opacifier content is .not critical and up to about 10% or more of the opacifier can be utilized in the practice of this invention although heating the liquid detergent composition to about 180 F. and above is required to dissolve such amounts of opacifier. While other ingredients of the compositions of this invention often exert a slight solubilizing effect on the opacifier, it is merely necessary to add enough of the substantially insoluble alkyl glyceryl ether sulfonate so that at least about 0.5% exists as undissolved suspended crystals at room temperature, generally averaging about 80 F.
• opacifier and active synthetic detergents used in the practice of this invention result in a product that is thick or viscous when combined only with water, it is often desirable to thin the mixture with a suitable water soluble organic solvent.
• Ethanol, propanol, isopropanol, ethylene glycol and propylene glycol are useful in this respect and the amounts used are from about to about 25% (ordinarily about 3%-20%) by weight of the composition.
• Up to about 5% sodium or potassium toluene or benzene sulfonate can also be used as a hydrotrope in conjunction with the above mentioned solvents.
• water soluble organic solvents also increases the solubility of the active synthetic detergents in water, the solubility increasin in substantially direct proportion to the amount of solvent used.
• the practical limit of the solubility of common active synthetic detergent salts in water alone is about 25%.
• up to about 45% of these detergent salts can be used in the liquid compositions of this invention when about 25% of any of the above-mentioned water soluble organic solvents are added.
• Satisfactory viscosities for the liquid compositions of this invention are in the range of about 150 to about 3000 centipoises at room temperature.
• Preferred viscos- -ities are in the range of about 200 to 800 centipoises at room temperature.
• the suspended crystals of the alkyl glyceryl ether sulfonate in the composition of this invention have a high degree of stability against gravitational separation. Tendencies for the crystals to settle can be decreased, for example, by increasing the specific gravity of the solution or by dispersion of the opacifier in very fine crystalline form.
• the specific gravity of the solution can be increased by the inclusion of sodium salts such as sodium chloride, sodium sulfate, sodium acetate or other compatible salts in the formulation. Thus, the difference between the specific gravity of the solution and that of the suspended crystals can be decreased.
• the salts may be added in amounts up to the limit of their solubility in the detergent composition. Some salts are presentin the composition as by-products from the synthetic detergent manu- Additional :salts can be added. Sodium sulfate at room temperature) although mixtures of it and other more soluble salts allow an electrolyte content in the compositions of about 2 to 15% by Weight.
• Corresponding potassium salts can be used with potassium salts of the opacifier and synthetic detergent with similar results.
• suds stabilizer additives which can be used in the ,preparation of the-detergent compositions of this invention, but which are not necessary, are the monoand diethanolamides of coconut fatty acids.
• Example I Three moles of ethylene oxide were reacted with one mole of a middle cut coconut fatty alcohol which contained about 65% dodecanol, the balance being essentially fatty alcohols with 14 to 16 carbons.
• the reaction product was sulfated with chlorosulfonic acid and then neutralized with caustic soda.
• the resulting alkyl ethylene oxide ether sulfate had an average of three units of ethylene oxide per molecule.
• the same middle cut coconut alcohol was reacted with 15% excess epichlorohydrin.
• the chloroglyceryl ether thus formed was sulfonated with sodium sulfite, forming an alkyl glyceryl ether sodium sulfonate.
• a sodium tallow alkyl glyceryl ether sulfonate was made by the process described above, using a fatty alcohol mixture derived by the reduction of tallow and containing about 65% C alcohol, about 33% C alcohol and about 2% C alcohol.
• a liquid detergent was made by dissolving the following amounts of ingredients in the water shown at about F.
• alkyl ethylene oxide ether sodium sulfate derived from the middle cut coconut alcohol 4 parts alkyl glyceryl ether sodium sulfonate derived from the middle cut coconut alcohol 2.5 parts alkyl glyceryl ether sodium sulfonate derived from tallow fatty alcohol 3 parts monoethanolamide of coconut fatty acids 7 parts ethanol 1.5 parts sodium chloride 6 parts sodium sulfate 56 parts water to make 100 parts
• the formula was rapidly cooled to about 35 F. by passing it through a Votator. It is not necessary to cool as low as 35 F. Passing the detergent solution through a heat exchanger, so that the temperature is brought down to room temperature, about 80 F. rapidly, also produces good appearance and stability.
• This preparation performed very well in dishpan and fine fabric sudsing and detergency and had the desired pearly opacity and opalescent sheen.
• alkyl glyceryl ether sulfonate is derived solely from C fatty alcohol or C fatty alcohol instead of tallow fatty alcohol mixture in the above example, sub stantially equal results are obtained.
• Example 1I The following materials were prepared in the same manner as those in Example I and were dissolved in the water shown below at about F.
• the sodium alkyl glyceryl ether sulfonates shown below were prepared by the method described in Example I.
• Sodium alkyl glyceryl ether sulfonate derived from tallow fatty alcohol was prepared as shown in Example I.
• Example IV The following materials were dissolved in the water shown below at about 120 F.
• the sodium alkyl glyceryl ether sulfonate was prepared using fatty alcohols derived by the reduction of tallow and containing about 65% C 33% C and 2% C alcohols.
• polypropylene averaging about 12 carbons 13 parts diethanolamide of coconut fatty acids 19 parts ethanol 2.5 parts sodium tallow alkyl glyceryl ether sulfonate prepared as described in Example I 2.0 parts of a mixture of sodium chloride and sodium sulfate occurring in the synthetic detergents employed 45.5 parts water to make 100 parts After being cooled by passage through a heat exchanger, this preparation was an excellent detergent for dishwashing and had a pleasing opaque appearance with a viscosity of about 400 centipoises. If isopropanol is substituted for the ethanol, substantially equalresults are obtained.
• Example V The following ingredients were added to the water shown below at about 120 F. and then cooled to form a white opaque rather viscous liquid which was pourable, performed excellently as a detergent and foaming agent.
• the alkyl glyceryl ether sulfonate was prepared from a mixture of fatty alcohols derived from the reduction of coconut oil and containing about 65% C 25% C and C alcohols.
• Example V1.A composition of the following ingredicuts was prepared by first effecting substantially complete solution of the solid constituents in the liquid constituents at slightly elevated temperature about 125 F. and then cooling to room temperature, about F. in a heat exchanger. An opaque product having an opalescent sheen and excellent detergency and sudsing properties resulted.
• Example VII 5 and 10 parts sodium polypropylene benzene sulfonate described in Example IV 5 and 10 parts sodium alkyl phenol ethylene oxide ether sulfate in which there was an average of four ethylene oxide units per molecule and in which the alkyl radical contained about 9 carbon atoms 10 and 20 parts potassium alkyl ethylene oxide ether sulfate produced by reacting one mole of ethylene oxide with one mole of the fatty alcohol mixture as described in this Example VI 5 and 10 parts coconut fatty acid ester of sodium isethionate produced commercially under the trade name Igepon AC-78 20 parts ammonium salt of the alkyl ethylene oxide ether sulfate prepared as described in this Example VI Example VII.A liquid detergent composition was prepared by dissolving the following ingredients in water:
• Example I 20 parts sodium alkyl ethylene oxide ether sulfate desribed in Example I 3 parts monoethanolamide of coconut fatty acids 7 parts ethanol 1.5 parts of a mixture of sodium chloride and sodium sulfate occurring in the synthetic detergents employed 62 parts water 4 parts of sodium alkyl glyceryl ether sulfonate prepared from coconut'oil fatty alcohol as described in Example VI and 2.5 parts of sodium alkyl glyceryl ether sulfonate prepared from tallow fatty alcohol as described in Examp e I was dispersed in the above composition in a colloidal mill at 60 F. An excellent opaque liquid dishwashing detergent resulted.
• Example VIII An opaque, fairly viscous, liquid detergent composition was prepared by dissolving the fol lowing ingredients in the water shown at about 150 F. and cooling the composition to room temperature.
• This invention results in a stable, eificient, light duty detergent with a highly desirable appearance. It is intended mainly for dishwashing and the washing of fine fabrics but can also be used as a hair shampoo and as a detergent for laundry and other general household requirements.
• an aqueous vehicle containing in solution about to about 25% by weight of a water soluble anionic non-soap synthetic detergent salt and suspended therein about 0.5% to by weight of a crystalline opacifying agent selected from the group consisting of sodium and potassium salts of an alkyl glyceryl ether sulfonate with alkyl radicals ranging in chain length from C to C and which is substantially insoluble in the composition at room temperature.
• a crystalline opacifying agent selected from the group consisting of sodium and potassium salts of an alkyl glyceryl ether sulfonate with alkyl radicals ranging in chain length from C to C and which is substantially insoluble in the composition at room temperature.
• an aqueous vehicle containing in solution about 5% to 25% by weight of a water-soluble anionic synthetic detergent salt selected from the group consisting of anionic sulfate and sulfonate synthetic detergents and mixtures thereof, and suspended therein at least about 0.5% to 10% by weight of a crystalline opacifying agent selected from the group consisting of sodium and potassium salts of an alkyl g yceryl ether sulfonate with alkyl radicals ranging in chain length from C to C and which is substantially insoluble in the composition at room temperature.
• a water-soluble anionic synthetic detergent salt selected from the group consisting of anionic sulfate and sulfonate synthetic detergents and mixtures thereof, and suspended therein at least about 0.5% to 10% by weight of a crystalline opacifying agent selected from the group consisting of sodium and potassium salts of an alkyl g yceryl ether sulfonate with alkyl radicals ranging in chain length from C to C and which is substantially in
• An opaque liquid detergent composition comprising essentially about 5% to 45% by weight of a water-soluble anionic synthetic detergent salt selected from the group consisting of anionic sufate and sulfonate synthetic detergents and mixtures thereof, about 0.5% to 10% by weight of a suspension of an opacifying agent selected from the group consisting of sodium and potassium salts of an alkyl glyceryl ether sulfonate with alkyl radicals ranging in chain length from C to C and which is substantially insoluble in the composition at room temperature, about 25% to 85% by weight of water and about 0% to 25% by weight of a water-soluble organic solvent selected from the group consisting of ethanol, propanol, isopropanol, ethylene glycol, propylene glycol and mixtures thereof.
• the opacifying agent is a sodium alkyl glyceryl ether sulfonate in which the alkyl radicals are derived from a fatty alcohol derived by the reduction of tallow.
• An opaque liquid detergent composition comprising essentially, in an aqueous vehic e, about 15% to 30% by weight of a water-soluble anionic synthetic detergent salt selected from the group consisting of alkyl sulfate, alkyl benzene sulfonate, alkyl ethylene oxide ether sulfate, alkyl glyceryl ether sulfonate and mixtures thereof, about 0.5% to 10% by weight, as an opacifying agent, of a suspension of a sodium salt of an alkyl glyceryl ether sulfonate in which the alkyl radicals are derived from a fatty alcohol derived by the reduction of tallow, at least 2% by weight of a sodium salt of an a kyl glyceryl ether sulfonate in which the alkyl radicals are derived from a mixture of coconut oil fatty alcohols, about 3% to 20% by weight of a water-soluble organic solvent selected from the group consisting of ethanol,
• the process of preparing opaque liquid detergent compositions which comprises heating a mixture of water, about 5% to 45% by weight of water-soluble anionic synthetic detergent salts selected from the group consisting of anionic sulfate and sulfonate synthetic detergents and mixtures thereof, about 0% to 25% by weight of a water-soluble organic solvent selected from the group consisting of ethanol, propano isopropanol, ethylene glycol, propylene glycol and mixtures thereof, and an opacifying agent selected from the group consisting of sodium and potassium salts of an alkyl glyceryl ether sulfonate with alkyl radicals ranging in chain length from C to C to effect a solution of said mixture and cooling said mixture to at least room temperature to precipitate from about 0.5 to 10% by weight of said opacifying agent in the form of suspended crystals.
• water-soluble anionic synthetic detergent salts selected from the group consisting of anionic sulfate and sulfonate synthetic detergents and mixtures thereof

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Citations (5)

• 0
  • BE BE566727D patent/BE566727A/xx unknown
  • NL NL226933D patent/NL226933A/xx unknown
• 1957
  • 1957-04-16 US US653052A patent/US2970964A/en not_active Expired - Lifetime
• 1958
  • 1958-04-12 DE DEP20489A patent/DE1081172B/de active Pending
  • 1958-04-14 FR FR1200847D patent/FR1200847A/fr not_active Expired
  • 1958-04-16 CH CH5843058A patent/CH379672A/de unknown
  • 1958-04-16 GB GB12160/58A patent/GB847712A/en not_active Expired

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