MXPA02001523A - Detergent compositions comprising hydrotropes. - Google Patents

Detergent compositions comprising hydrotropes.

Info

Publication number
MXPA02001523A
MXPA02001523A MXPA02001523A MXPA02001523A MXPA02001523A MX PA02001523 A MXPA02001523 A MX PA02001523A MX PA02001523 A MXPA02001523 A MX PA02001523A MX PA02001523 A MXPA02001523 A MX PA02001523A MX PA02001523 A MXPA02001523 A MX PA02001523A
Authority
MX
Mexico
Prior art keywords
detergent composition
detergent
surfactant
composition
laundry
Prior art date
Application number
MXPA02001523A
Other languages
Spanish (es)
Inventor
Boutique Jean-Pol
Original Assignee
Procter & Gamble
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 Procter & Gamble filed Critical Procter & Gamble
Publication of MXPA02001523A publication Critical patent/MXPA02001523A/en

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
    • C11D17/00Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/06Powder; Flakes; Free-flowing mixtures; Sheets
    • 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
    • C11D17/0004Non aqueous liquid compositions comprising insoluble particles
    • 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
    • C11D17/0047Detergents in the form of bars or tablets
    • C11D17/0065Solid detergents containing builders
    • C11D17/0073Tablets
    • C11D17/0086Laundry tablets
    • 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
    • C11D3/16Organic compounds
    • C11D3/20Organic compounds containing oxygen
    • C11D3/2003Alcohols; Phenols
    • C11D3/2041Dihydric alcohols
    • C11D3/2044Dihydric alcohols linear
    • 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
    • C11D3/16Organic compounds
    • C11D3/20Organic compounds containing oxygen
    • C11D3/2003Alcohols; Phenols
    • C11D3/2041Dihydric alcohols
    • C11D3/2051Dihydric alcohols cyclic; polycyclic
    • 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
    • C11D3/16Organic compounds
    • C11D3/37Polymers
    • C11D3/3703Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/3707Polyethers, e.g. polyalkyleneoxides

Abstract

The present invention relates to detergent compositions, especially liquid, granular and tablet forms of laundry detergent compositions, that comprise improved hydrotropes, wherein the hydrotropes are organic molecules in which two polar groups are separated from each other by at least 5 aliphatic carbon atoms; liquid compositions that contain such hydrotropes have a viscosity, dilution profile and dissolution behavior that render the product effective and convenient for use as a liquid laundry detergent composition.

Description

DETERGENT COMPOSITIONS THAT COMPRISE HYDROTHROPOSES FIELD OF THE INVENTION This invention relates to detergent compositions, especially in liquid, granulated or tablet form of laundry detergent compositions, which comprise improved hydrotropes, wherein the hydrotropes are organic molecules in which two polar groups are separated from each other at least by weight. aliphatic carbon atoms; Liquid compositions containing such hydrotropes possess a viscosity, dilution profile and dissolution behavior which makes the product effective and convenient for use as a liquid laundry detergent composition.
BACKGROUND OF THE INVENTION In recent years, the popularity of detergent products in non-granulated / powdered forms has increased. These other forms include liquids and tablets. Liquid detergent laundry products offer a wide variety of advantages over dry detergent, powder or laundry detergent products. Liquid laundry detergent products are ready to be measured, dissolve quickly in washing water, do not produce dust, can be easily applied in solutions or concentrated dispersions for soiled areas in clothes to be washed and generally occupy less storage space than laundry. granulated products Additionally, liquid laundry detergents incorporate in their formulations materials that would deteriorate in drying operations used in the manufacture of granular detergent products or in laundry particles. Because liquid laundry detergents are considered more convenient to use than granular laundry detergents, they have found strong support from consumers. Despite the advantages of liquid detergent compositions, the granulated products still have numerous advantages. These advantages include its performance, formulation capacity, low packing cost and greater product stability. The advantages of product stability and formulation capacity derive in large part from the nature of the granulated mixtures wherein the components can be stabilized and isolated individually into particles before being mixed with other particles. The physical separation in the final detergent composition allows the use of materials that are potentially unstable in a composition such as bleaches, enzymes, etc. It is well known to make detergent compositions in the form of a tablet by compacting a granular detergent composition. Such tablets offer the convenience to consumers of a detergent dosage . previously measured without the inconvenience and hassle of measuring a sufficient amount of a granular detergent composition for each wash. Such products also offer a great convenience to those consumers who wash their clothes outside or away from their residence (for example, a laundrette) because the consumer requires only transporting the laundry detergent needed to wash their clothes. The detergent compositions can be made in tablet form by compacting detergent particles. A disadvantage with conventional liquid detergent compositions has been the incompatibility of the ingredients. The laundry detergent components which may be compatible with each of the other products in tablet and / or granulate, may tend to interact or react with each other in a liquid environment, especially in an aqueous liquid environment. A disadvantage with conventional granular / powder detergent compositions has been relatively poor dissolution, dispersion and solubility performance. A disadvantage with conventional tablet detergent compositions has been the conflict between making the tablets strong and durable enough to prevent their breaking during manufacture, transport and / or storage, while at the same time making the tablets in such a way that they disintegrate Quickly in contact with the washing water.
Given the above, there is a continuing need to provide / formulate liquid detergent compositions that not only have excellent cleaning performance as well as excellent composition formation and physical stability but also possess a viscosity, dilution profile and dissolution behavior that become useful and convenient for use as a liquid laundry detergent composition; there is a continuing need to provide / formulate granular / powder detergent compositions having improved dissolution, dispersion and solubility performance while maintaining the inherent formulation flexibility of the granular / powder detergent; and there is a continuing need to provide / formulate tablet detergent compositions which are both strong and durable to resist breakage during manufacture, transportation and / or storage, and which at the same time rapidly disintegrate upon contact with the wash water of the detergent. such that the components of the tablet can provide detersive benefits during the washing process.
BRIEF DESCRIPTION OF THE INVENTION In this invention it has been found that the sum of certain hydrotropes to the detergent compositions of the present invention, such as liquid laundry detergent compositions, aqueous or non-aqueous.
Aqueous, granular / laundry detergent / laundry detergent compositions, and / or laundry detergent tablet compositions, provide 1) a liquid detergent product having a viscosity, dilution profile and dissolution behavior which make the product useful and suitable as a liquid laundry detergent composition, and / or 2) a granular / powder detergent product with increased dispersion, dissolution and / or solubility performance, with the need to reduce surfactant levels compared to granular / powder detergent products lacking said hydrotropes, and / or 3) a detergent tablet product, wherein the hydrotropes are useful as binders, with improved durability and strength properties with excellent dissolution and disintegration properties compared to detergent tablet products lacking of said hydrotropes.
A.- Liquid Products The liquid detergent products containing these hydrotropes demonstrate an excellent cleaning performance, physical stability and excellent composition and rheological behavior of favorable product. These hydrotropes should be classified more generally as organic molecules in which two polar groups are separated from each other by at least 5 aliphatic carbon atoms. Liquid detergent products can be aqueous or non-aqueous. In a preferred aspect of this invention there is provided a non-aqueous liquid detergent comprising a hydrotrope with two polar groups separated from each other by at least 5 aliphatic carbon atoms as well as from about 49% to about 99.95% by weight of the composition of a non-aqueous liquid phase containing a surfactant and from about 1% to about 50% by weight of the composition of particulate material which is substantially insoluble in said liquid phase and which is selected from peroxygen bleaching agents , bleach activators, organic detergency builders, alkalinity sources and combinations thereof.
B.- Granulated / Powdered Products The granular / powder detergent products containing these hydrotropes demonstrate an improved dispersion, dissolution and / or solubility performance with the need to reduce surfactant levels compared to granular / powder detergent products which they lack such hydrotropes. These hydrotropes should be classified more generally as an organic molecule having a first polar group and a second polar group separated from each other by at least 5 aliphatic carbon atoms.
C- Tablet Products The detergent tablets prepared in accordance with this invention comprise a hydrotrope ("binding agent") characterized in that the binder must be classified more generally as an organic molecule having a first polar group and a second group polar separated from each other by at least 5 aliphatic carbon atoms. Tablet detergent products show improved strength and durability properties with excellent disintegration and dissolution properties compared to tablet detergent products lacking such hydrotropes.
All parts, percentages and relationships used in this document are expressed as a percentage weight unless otherwise specified. All the documents cited are, in part relevant, incorporated in this document by reference.
DETAILED DESCRIPTION OF THE INVENTION Definitions "Hydrotropes" As used herein, "hydrotrope" generally means a compound with the ability to increase the solubilities, preferably the aqueous solubilities, of certain slightly soluble organic compounds, more preferably "hydrotrope" is defined as as follows (see SE Friberg and M. Chiu, J. Dispersion Science and Technology, 9 (5 &6), pages 443 to 10 457, (1988-1989)): 1. A solution is prepared comprising 25% by weight of the specific compound and 75% by weight of water 2. Subsequently octanoic acid is added to the solution in a proportion of 1.6 times the weight of the specific compound in solution, 15 the solution at a temperature of 20 ° Celsius. The solution is mixed in a Sotax agitator with a stirring rod with marine propeller, the propellant is placed approximately 5mm above the bottom of the agitator, the mixer is set at a rotation speed of 200 revolutions per minute. 3. The specific compound is hydrotrope if the Octanoic Acid 20 is solubilized, for example, if the solution comprises only one phase, said phase being liquid. "Non-aqueous" or "Anhydrous" As used in the present invention, "non-aqueous" or "anhydrous" are used as synonyms and both ...,. .... -iM-t - describe a fluid wherein the free water content is less than about 1%.
"Polar Groups" As used in this document, "Polar groups" refers to functional groups that have a permanent electric bipolar moment that arises from partial changes in atoms linked by polar junctions. The polar group itself can be anionic or discharged. 10"Dissolution" As used herein, "dissolution" refers to the rate at which the detergent product mixes with water and releases the active ingredients in the wash.
"Particles" As used herein, "particles" 15 means the full size limit of a product or final detergent component or the full size limit of particles, agglomerates or discrete granules in a final detergent product or component mixture. . Specifically, no reference is made to a size fraction (eg, representing less than 100% of the full size limit) of any of these particle types unless the size fraction represents 100% of a particle discrete in a mixture of particles. For each type of particle component in a mixture, the full size limit of discrete particles of that type has the same or ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ Substantially similar composition regardless of whether the particles are in contact with other particles. For agglomerated components, the agglomerates by themselves are considered as discrete particles and each discrete particle can be composed of a compound of smaller primary particles and binder compositions.
"Geometric Mean Particle Diameter" .- As used herein, the phrase "geometric mean particle diameter" means the mean geometric diameter of the mass of a series of discrete particles as measured by any other technique. measurement of particle size based on the standard mass, preferably by dry sieving.
"Geometric Standard Deviation" or "Interval" As used in this document, the phrase "geometric standard deviation" or "interval" of a particle size distribution means the geometric width of the normal access function best suited for information of the aforementioned particle size which can be carried out by the diameter ratio of 84.13 percentile divided by the diameter of the 50th percentile of the cumulative distribution (Dß413 D50); See Gotoh et al, Powder Technology Handbook, pp. 6-11, Meral Dekker 1997.
Hydrotropes The hydrotropes described in this section are an essential component of the detergent compositions present. In the present invention it has been found that the addition of a hydrotrope in which two polar groups are separated from each other by at least 5, preferably 6, aliphatic carbon atoms. Examples of polar groups suitable for inclusion in the hydrotrope are hydroxyl and carboxyl ions. Particularly preferred hydrotropes are selected from the group consisting of: 1 1, 4 Cyclohexanedimethanol: 1, 6 Hexandiol: 1, 7 Heptandiol: HO 20 mixtures thereof.
Also, mixtures of these organic molecules or any number of hydrotrope molecules consisting of two polar groups separated from each other by at least 5, preferably 6, aliphatic carbon atoms are also acceptable. 1, 4 Cyclohexanedimethanol may be present in either its cis configuration, its trans configuration or a mixture of both configurations.
A. Liquid Products This invention comprises liquid laundry detergent compositions both aqueous and non-aqueous and which are suitable for use in automatic washing machines or for pre-treated stains on cloth or textile articles before washing. The liquid laundry detergent compositions present may comprise only one liquid phase of rich surfactant or may contain both a liquid phase of surfactant and a solid particle phase which is suspended in the liquid phase. Preferably, the liquid phase of rich surfactant comprises the hydrotropes and optionally organic diluents. The hydrotropes of this invention, when incorporated into the liquid products of this invention, provide the key ingredient to prevent the detergent compositions shown herein from gelling and / or thickening.
The gelling has been previously observed in liquid detergent products prepared without the hydrotropes as defined in this invention, when for the first time the products come into contact and are diluted in water. Without being limited by theory, it is believed that this gelation phenomenon is a result of the surfactant system which forms viscous surfactant phases (usually laminated, spherulitic or hexagonal phases) at certain concentrations of surfactants and water. A correlation has been found between the viscosity of the product: mixture of water in the critical dilution range where gelation is observed, and the amount of viscous phase of surfactant formed. In a preferred embodiment, the detergent compositions are non-aqueous, having a non-aqueous liquid phase of rich surfactant and having a solid particle phase suspended in said liquid phase. In this embodiment, the nonaqueous liquid phase containing surfactant generally comprises from about 49% to about 99.95% by weight of the detergent compositions mentioned herein. Preferably, this liquid phase is structured by surfactants and will comprise from about 52% to about 98.9% by weight of the compositions. More preferably, this non-aqueous liquid phase will comprise from about 55% to about 70% by weight of the compositions mentioned herein. Said liquid phase containing surfactants will often have a density of about 0.6% to about 1.4 g / cc., More preferably from about 0.9% to about 1.3 g / cc. Without being limited by theory, it is believed that the hydrotropes described above prevent the formation of viscous phases of surfactants that were formed at the time of dilution, since the hydrotrope can interact effectively with the structured, ordered layers of the agent molecules surfactants, break them and promote the formation of isotropic phases of low viscosity surfactants. These hydrotropes also provide other benefits to increase the rheology of the liquid detergent compositions. For example, it is often difficult to incorporate ethoxylated quaternized amine materials in anionic surfactant-containing detergent compositions because the quaternized ethoxylated amine materials cause the anionic surfactant to precipitate out of the liquid phase causing the liquid detergent composition to thicken. quickly. However, it is highly desirable to incorporate these anti-redeposition / removal agents of clay soils into a liquid detergent product as they provide important performance benefits. In this invention it has been discovered that by including the hydrotropes described above the precipitation of anionic surfactants and the thickness of the generally observed composition is avoided and a liquid detergent composition of desirable rheological properties is produced.
The ethoxylated quaternized amine materials are described in more detail below.
Liquid Phase with Surfactants The liquid phase of the liquid detergent compositions mentioned herein is preferably formed from hydrotropes, nonionic and anionic surfactants, and one or more organic diluents.
Organic diluents. The main component of the liquid phase of the detergent compositions mentioned herein comprises one or more aqueous or non-aqueous organic diluents. The organic diluents used in this invention can be both surface active liquids, for example, surfactants, and non-surfactant liquids, hereinafter referred to as solvents. The term "solvent" is used herein to connote the non-surfactant liquid portion of the compositions mentioned herein. While some of the essential and / or optional components of the compositions mentioned herein may, in fact, dissolve in the liquid phase containing "solvent, other components will be present as dispersed particle material within the liquid phase containing" solvent " Thus, the term "solvent" does not necessarily require that the solvent material be capable of actually dissolving all of the detergent composition components added to it.The liquid diluent component will generally comprise from about 50% to about 90%, More preferably from about 50 to about 80%, more preferably from about 55% to about 75%, of a liquid phase with structured surfactant .. Preferably, the liquid phase of the compositions mentioned herein, will comprise both surfactant solvents liquids as solvents of liquid non-surfactants. i) Surfactant Liquids Suitable types of surfactant liquids which can be used to form the liquid phase of the compositions mentioned herein include alkoxylated alcohols, block polymers of ethylene oxide (EO) propylene oxide (PO), polydroxy amides of fatty acid, alkylopolysaccharides, and the like. Such liquid surfactants are usually those having a HLB range of 10 to 16. The most preferred surfactant liquids are the non-ionic, benzylated alcohol surfactants. The alcohol alkoxylates are materials corresponding to the general formula: R1 (CmH2mO) nOH "'- -" -. - wherein R1 is a C8-C16 alkyl group, m is about 2 to 4, and n is in the range of about 2 to 12. Preferably R1 is an alkyl group, which can be be primary or secondary, containing about 9 to 15 carbon atoms, more preferably about 10 to 14 carbon atoms, preferably also alkoxylated fatty alcohols will be ethoxylated materials containing from about 2 to 12 portions of ethylene oxide per molecule, more preferably from about 3 to 10 portions of ethylene oxide per molecule.The alkoxylated fatty alcohol materials useful in the liquid phase will often have a hydrophilic-lipophilic balance (HLB) whose range is More preferably, the HLB of this material will fall within the range of about 6 to 15, more preferably about 8 to 15. Examples of fatty alcohol alkoxylates useful in or as the liquid phase of the The compositions mentioned herein will include those which are made from alcohols of 12 to 15 carbon atoms and which contain about 7 moles of ethylene oxide. Such materials have been marketed under the trademark Neodol 25-7 and Neodol 23-6.5 by Shell Chemical Company. Other useful Neodoles include Neodol 1-5, an ethoxylated fatty alcohol with an average of 11 carbon atoms in its alkyl chain with about 5 moles of ethylene oxide; Neodol 23-9, a primary ethoxylated C-? 2-C? 3 alcohol with about 9 moles of ethylene oxide and Neodol 91-10, a primary ethoxylated Ca-C-n alcohol with about ^^^ of 10 moles of ethylene oxide. Alcohol ethoxylates of this type have also been marketed by Shell Chemical Company under the trademark of Dobanol. Dobanol 91-5 is a fatty alcohol of Cg-Cn ethoxylated with an average of 5 moles of ethylene oxide and Dobanol 25-7 is a fatty alcohol of C-? 2-C? 5 ethoxylated with an average of 7 moles of oxide of ethylene per mole of fatty alcohol. Other examples of suitable ethoxylated alcohols include Tergitol 15-S-7 and Tergitol 15-S-9 which are linear secondary alcohol ethoxylates marketed by Union Carbide Corporation. The former is a mixed ethoxylation product of linear secondary alkanol from Cu to C15 with 7 moles of ethylene oxide and the latter is a similar product with 9 moles of reacted ethylene oxide. Other types of alcohol ethoxylates useful in these compositions are non-ionic of higher molecular weight, such as Neodol 45-11, which are similar condensation products of ethylene oxide of high fatty alcohols, being the highly fatty alcohol of 14-15 atoms of carbon and the number of ethylene oxide groups per mole around 11. Such products have also been marketed by Shell Chemical Company. If the nonionic alcohol alkoxylate surfactant is used as part of the liquid phase in the detergent compositions mentioned herein, it will preferably be present at the point of about 1% to 60% of the structured liquid phase of the composition. With more hi Ai Jt Jt? . * »*. L -i, A - AAand A ... . . ._ TO .-. A ^ ~ A ~, and - Az. - - - = - A.. "« -. - > Preferably, the alcohol alkoxylate component will comprise about 5% to about 40% of the structured liquid phase. More preferably, an alcohol alkoxylate component will comprise from about 5% to about 35% of the structured liquid phase of the detergent composition. The use of the alcohol alkoxylate at these concentrations in the liquid phase corresponds to a concentration of alcohol alkoxylate in the total composition of from about 1% to about 60% by weight, more preferably from about 2% to about 40% by weight. weight, and more preferably from about 5% to about 25% by weight, of the composition. Another type of surfactant liquid that can be used in this invention is the block polymers of ethylene oxide (EO) propylene oxide (PO). Materials of this type are well known as nonionic surfactants which have been marketed under the Pluronic trademark. These materials are formed by adding blocks of ethylene oxide portions to the ends of the polypropylene glycol chains to adjust the active surface properties of the resulting block polymers. The EO-PO block polymer nonionics of this type are described in more detail in Davidsohn and Milwidsky; Synthetic Detergents, 7th Ed .; Longman Scientific and Technical (1987) on pp. 34-36 and pp. 189-191 and in US patent 2,674,619 and 2,677,700. All of these publications are incorporated herein by reference. These non-ionic surfactants of the Pluronic type are also believed to function as effective suspending agents for the particulate material which is dispersed in the liquid phase of the detergent compositions mentioned herein. Another possible type of surfactant liquid useful in the compositions mentioned herein comprises polydroxy fatty acid amide surfactants. The materials of this type of nonionic surfactants are those that comply with this formula: wherein R is an alkyl or alkyl, p is 1 to 6, and z is glycityl derived from a reduced or alkoxylated sugar derivative thereof. Such materials include the C12-C18 N-methyl glucamides as an example we have N-methyl N-1-deoxyglucityl cocoamide and N-methyl N-1-deoxyglucityl oleamide. The processes for making polydroxylic fatty acid amides are known and found, for example, in Wilson, US patent 2,965,576 and Schwartz, US patent 2,703,798, which are mentioned in this document by reference. The materials themselves and their preparation are also described in more detail in Honsa, US Patent 5,174,937m issued December 26, 1992, the patent of which is also incorporated herein by reference. The detergent compositions of the present invention may also contain anionic, cationic and / or amphoteric types. In a preferred embodiment, wherein the liquid phase is not aqueous, the liquid phase is prepared by combining the non-aqueous organic liquid diluents described in the present invention with a surfactant which is generally, but not necessarily, selected to add structure to the phase non-aqueous liquid of the detergent compositions mentioned herein. The structure surfactants may be of the anionic, nonionic, cationic and / or amphoteric type. In this way, the surfactants described below can be aggregated by only their surfactant-active agent attributes or by those attributes as well as their structure ability. Preferred surfactants are anionic surfactants such as alkyl sulfates, polyalkoxylated alkyl sulfates and linear alkyl sulfonate benzenes. Another common type of anionic surfactant material that can be optionally added to the detergent compositions herein mentioned as structurants comprises anionic of the corboxylated type. Carboxylated anionics include the alkyloxy carboxylates of Cι-Cía (especially the ethoxycarboxylates EO 1 to 5) and the sarcosinates of Cß-C-iß, especially oleoyl sarcosinate. Another common type of anionic surfactant material that can be employed as a structurant comprises other sulfonated anionic surfactants such as the paraffin C8-Cs sulfonates and the C8-C-8 olefin sulfonates. The structuring of surfactants will generally comprise from about 1% to about 30% by weight of the composition mentioned herein.
As indicated, a preferred type of structuring of anionic surfactant comprises primary and secondary alkylsulfate ammonium surfactants. Such surfactants are those that are produced by sulfation of higher C8-C20 fatty alcohols. The conventional primary alkyl surfactants have the formula generally ROSO3"M + wherein R is typically a linear C8-C20 hydrocarbyl group, which may be straight or branched chain, and M is water solubilizing cation. R is a C10-Cu alkyl, and M is an alkali metal, most preferably R is approximately C12 and M is sodium Conventional secondary alkyl sulfates, as described above, can also be used as an anionic surfactant structure for the liquid phase of the compositions mentioned herein: If used, the alkyl sulfates will generally comprise from about 1% to about 30% by weight of the composition, more preferably from about 5% to about 25% by weight of the Composition: Non-aqueous liquid detergent compositions containing alkyl sulphates, peroxygen bleaching agents, and bleach activators. they are described in more detail in Kong-Chan et al .; WO96 / 10073; published on April 4, 1996, the application of which is incorporated herein by reference. -fc - ^^ .. ^ - * & «,» .. 5. ^. ".- .- g -, z ^ ^. Az -zJyJ? MH.- * -rtf-r- - ... ..AAt A- z Another preferred type of anionic surfactant material which can be optionally added to the non-aqueous cleaning compositions referred to herein as structurants comprises the polyalkoxylated alkyl sulphates Polyalkoxylated alkyl sulphates are also known as alkoxylated alkylsulfates or sulfates of alkyl ether Such materials are those corresponding to the formula R2-O- (CmH2mO) N-SO3M wherein R2 is a C10-C22 alkyl group, m is from 2 to 4, n is from about 1 to 15, and M is a cation formed by salt Preferably, R 2 is a Ci 2 -C 8 alkyl, m is 2, n is from about 1 to about 10, and M is sodium, potassium, ammonium, alkylammonium or alkanolammonium. , R2 is a C12-C16, m is 2, n is from about 1 to about 6, and M is sodium Ammonium, alkylammonium and alkanolammonium counterions are preferably avoided when They are used in compositions mentioned herein due to incompatibility with peroxygen bleaching agents. If used, the polyalkoxylated alkyl sulphates can generally comprise from about 1% to about 30% by weight of the composition, more preferably from about 5% to about 25% by weight of the composition. Non-aqueous liquid detergent compositions containing polyalkoxylated alkyl sulfates, in combination with fatty acid polydroxylic amides, are described in greater detail in Boutique et al .; PCT Application No. PCT / US96 / 04223, whose application is incorporated in this invention by reference. The most preferred type of anionic surfactant for use as a structurant in the compositions mentioned herein comprises the alkyl sulfonate benzene (LAS) surfactants. In particular, such LAS surfactants can be formulated in a specific type of powder with anionic surfactants which is especially useful for incorporation into non-aqueous liquid detergent compositions of the present invention. Said powder comprises two distinct phases. One of these phases is insoluble in the non-aqueous organic liquid diluents employed in the compositions mentioned herein; the other phase is soluble in non-aqueous organic liquids. It is the insoluble phase of this powder with preferred anionic surfactants which can be dispersed in the non-aqueous liquid phase of the preferred compositions mentioned herein and which forms a network of small aggregate particles which allows the final product to stably suspend other solid particulate materials in the composition. Further descriptions of suitable surfactants, and methods of preparing such surfactants can be found in the co-pending application by Jay I. Kahn et al .; entitled "Preparation of Liquid Detergent Compositions in Non-Aqueous Particles with Liquid Phase of Structured Surfactant", with P &G "----. J - * ._ Case No. 6150, Series No. 09 / 202,964, registered on December 23, 1998, incorporated by reference. Generally, the liquid surfactant may comprise from about 25% to about 70% of the liquid phase of the compositions mentioned herein. More preferably, the liquid surfactant will comprise from about 30% to about 65% of a structured liquid phase. This corresponds to a concentration of liquid surfactant in the total composition of from about 10% to about 70% by weight, more preferably from about 20% to about 50% by weight, of the composition. The amount of total liquid surfactant in the non-aqueous liquid phase structured with preferred surfactant is as described above and will be determined subsequently by the type and amounts of other composition components and by the desired composition properties. ii) Organic Non-Surfactant Solvents - The liquid phase of the detergent compositions mentioned herein may also comprise one or more non-surfactant organic solvents. Such non-surfactant liquids are preferably those of low polarity. For purposes of this invention, "low-polarity" liquids are those that possess little, if any, tendency to dissolve one of the preferred types of particulate material used in the compositions mentioned herein, for example, peroxygen bleaching agents, sodium perborate or sodium percarbonate. In this way, relatively polar solvents such as ethanol are preferably not used. Suitable types of low polarity solvents useful in the liquid detergent compositions mentioned herein include lower monoalkyl ethers of alkylene glycol, low molecular weight polyethylene glycols, methyl esters and low molecular weight amines, and the like. A preferred type of low polarity solvent for use in the compositions mentioned herein comprises the straight or branched chain alkylene glycols of C-C8. Materials of this type include hexylene glycol (4-methyl-2,4-pentanediol), 1,3-butylene glycol and 1,4-butylene glycol. Other preferred types of low polarity solvents for use include the C2-C6 monoalkyl ethers of di-, tri-, or tetra-alkylene glycol of C2-C3. Specific examples of such compounds include diethylene glycol monoalkyl ether, tetraethylene glycol monobutyl ether, dipropylene glycol monoethyl ether, dipropylene glycol monobutyl ether. Especially preferred are diethylene glycol monobutyl ether, dipropylene glycol monobutyl ether and butoxy propoxy propanol (BPP). Compounds of this type have been marketed under the Dowanol, Carbitol and Cellosolve trademarks. Another preferred type of useful low polarity organic solvents comprises lower molecular weight polyethylene glycols (PEG). Such materials are those that have molecular weights of at least Approximately 150. PEG of molecular weight ranging from about 200 to about 600 are preferred. Another preferred type of non-polar solvent comprises low molecular weight methyl esters Such materials are those of the general formula R1-C (O ) -OCH3 wherein R1 falls in the range of about 1 to about 18. Examples of suitable lower molecular weight methyl esters include methyl acetate, methyl propionate, methyl octanoate and methyl dodecanoate. no low polarity surfactant employed should, of course, be compatible and non-reactive with other composition components, eg, bleach and / or activators, used in the liquid detergent compositions herein, preferably, said solvent component used in the present invention. an amount of about 1% to about 70% by weight of the liquid phase., a low polarity non-surfactant solvent will comprise from about 10% to about 60% by weight in a structured liquid phase, more preferably from about 20% to about 50% by weight, of a structured liquid phase of the composition. The use of non-surfactant solvents at these concentrations in the liquid phase corresponds to a concentration of non-surfactant solvent in the total composition of about 1% to about 50% by weight, more preferably about 5% by weight. % to about 40% by weight, and - • - - ** »« - More preferably from about 10% to about 30% by weight, of the composition. iü) Mixtures of Surfactant and Non-Surfactant Agent Solvents In the preferred embodiments employing non-aqueous surfactant liquids and non-aqueous surfactant solvents, the ratio of liquids of surfactant to non-surfactant, for example, the ratio of alcohol alkoxylate for low polarity solvent, within a liquid phase with structured surfactant can be used to vary the rheological properties of the detergent compositions formed subsequently. Generally, the liquid weight limit of surfactant for non-surfactant organic solvent will range from about 50: 1 to about 1: 50. More preferably, this ratio will range from about 3: 1 to 1: 3, with greater preference for Particulate solid materials In addition to the liquid phase with surfactant, the liquid detergent compositions mentioned herein also preferably contain from about 1% to about 50% by weight, more preferably from about 29% to about 44% by weight, Solid phase particle material that disperses and suspends within the liquid phase. Generally said particulate material will range in size from about 0.1 to 1500 microns, more preferably from about 0.1 to 900 microns. More preferably, said material will range in size from about 5 to about 200 microns. The additional particulate material used in this invention may comprise one or more types of detergent composition components which in particulate form are substantially insoluble in the liquid phase of the composition. Such materials include peroxygen bleaching agents, bleach activators, organic builders, inorganic sources of alkalinity, and combinations thereof. The types of particulate materials that can be used are described in more detail below, however, some materials can either be included in the particulate component or in the liquid phase with surfactants. In a preferred embodiment, the particulate material comprises the PVNO dye transfer inhibitor (see above for detailed description), an aluminosilicate builder as well as other minor particulate components. (a) Whitening Agent With Optional Blanging Activators The most preferred type of particulate material useful in the detergent compositions mentioned herein comprises particles of a peroxygen bleaching agent. Said peroxygen bleaching agents may be organic or inorganic in nature. Inorganic peroxygen bleaching agents are often used in combination with a bleach activator. Useful organic peroxygen bleaching agents include 10 percarboxylic acid bleaching agents and salts thereof. Suitable examples of this class of agents include magnesium monoperoxyphthalate hexahydrate, the magnesium salt of meta-chloro perbenzoic acid, 4-nonylamino-4-oxoperoxybutyric acid and diperoxydecanedioic acid. Such bleaching agents are shown in U.S. Patent 4,483,781, Hartman, 15 Issued on November 20, 1984; European Patent Application EP-A-133,354, Banks et al., Published on February 20, 1985; and US Patent 4,412,934, Chung et al., Issued November 1, 1983. Highly preferred bleaching agents also include 6-nonylamino-6-oxoperoxycaproic acid (NAPAA) as described in the US Pat. 20 4,634,551, Issued on January 6, 1987 for Burns et al. The inorganic peroxygen bleaching agents can also be used in particulate form in the detergent compositions mentioned herein. In fact, bleaching agents are preferred inorganic Such inorganic peroxygen compounds include alkali metal percarborate and perborate materials, more preferably percarborates. For example, sodium perborate (e.g., mono or tetra hydrated) can be used. Suitable inorganic bleaching agents may also include sodium or potassium carbonate peroxyhydrate, and equivalent "percarbonate" bleaches, sodium phosphate peroxyhydrate, urea peroxyhydrate, and sodium peroxide. Persulfate bleaching can also be used (for example, OXONE manufactured commercially by DuPont). Frequently, inorganic peroxygen blanches will be coated with silicate, borate, sulfate or water-soluble surfactants. For example, coated percarborate particles are available from various commercial sources such as FMC, Solvay Interox, Tokai Denka and Degussa. Preferably inorganic peroxygen bleaching agents eg, peroborates, percarbonates, etc., are combined with bleach activators, which leads to in situ production in aqueous solution (eg, during use of the compositions mentioned herein). for washing / blanching fabrics) of the peroxy acid corresponding to the bleach activator. Various examples are shown without limit of activators in US patent 4,915,854, Issued on April 10, 1990 to Mao et al., And US patent 4,412,934 Issued on November 1, 1983 to Chung et al. Nonanoyloxybenzene sulfonate (NOBS) and tetraacetylethylene diamine (TAED) activators are typical. I also know '- "-f- ^ -Lm - ** -» - * - *** - • - - may use mixtures thereof See also the aforementioned US patent 4,634,551 for other typical bleach and activators useful herein mentioned. describe other bleach activators derived from amide in U.S. Patent No. 5,891, 838, issued April 6, 1999 to Angelí et al., and the co-pending provisional application by Diane Parry entitled "Non-Aqueous Liquid Detergent Compositions Containing Matter In Gasified particles, "P &G Case No. 7173P, series No. 60 / 088,170 filed on June 5, 1998, both incorporated by reference to this document, if the peroxygen bleaching agents are used as all or part of the particulate material. Further, they will generally comprise from about 1% to about 30% by weight of the composition More preferably, the peroxygen bleaching agent will comprise from about 1% to 20% by weight of the composition. However, the peroxygen bleaching agent will be present up to about 5% to about 20% by weight of the composition. If used, the bleach activators can comprise from about 0.5% to about 20%, more preferably from about 3% to about 10%, by weight of the composition. Frequently, the activators are used in such a way that the molar ratio of the bleaching agent for activator limits of about 1: 1 to 10: 1, more preferably about 1.5: 1 to about 5: 1. (b) Transition metal bleach catalysts Another possible type of additional particulate material which can be suspended in the liquid detergent compositions mentioned herein comprises transition metal bleach catalysts which promotes the catalytic oxidation of dirt and stains on fabric surfaces. Such compounds are present in a catalytically effective amount, preferably from about 1 ppb to about 500 ppm (where "ppb" denotes parts per billion by weight and "ppm" denotes parts per million by weight), of the detergent composition for lavandepa The metal transition bleach catalyst comprises a complex of a transition metal selected from the group consisting of Mn (II), Mn (III), Mn (IV), Mn (V), Fe (II), Fe (III) , Fe (IV), Co (l), Co (ll), Co (lll), Ni (l), Mi (ll), Ni (lll), Cu (l), Cu (ll) Cu (lll), Cr (ll), Cr (lll), Cr (IV), Cr (V), Cr (VI), V (lll), V (IV), V (V), Mo (IV), Mo (V), Mo (VI), W (IV) W (V), W (VI), Pd (ll), Ru (ll), Ru (lll) and Ru (IV) coordinated with a rigid macropolycyclic ligand, preferably a crosslinked macropolycyclic ligand, having at least 4 donor atoms, at least two of which are donor atoms at the bridgehead. These catalysts are discussed more specifically in the co-pending provisional application by Daryle H. Busch et al., Entitled "Catalysts and Methods for Catalytic Oxidation", having P &; G Case No. 6524P, Series No.60 / 040, 629, which is incorporated by reference to this document.
«A.-t-ia-U -. ^^^ - "- * • * *" - * c) Material Organic Detergent Meiorator Another possible type of additional particulate material that can be suspended in the liquid detergent compositions mentioned herein comprises an organic detergent builder material that serves to counteract the effects of calcium, or other ion, water hardness encountered during the use of the laundry / bleach compositions mentioned herein. Examples of such materials include alkali metal, citrates, succinates, malonates, fatty acids, carboxymethyl succinates, carboxylates, polycarboxylates and polyacetyl carboxylates. Specific examples include sodium, potassium and lithium salts of oxydisuccinic acid, methyl acid, benzene polycarboxylic acids and citric acids. Other examples of segregated organic phosphate type agents such as those sold by Monsanto under the trademark Dequest and alkahydroxy phosphates. Also the citrate salts are highly preferred. Other suitable organic builders include the high molecular weight polymers and copolymers known to have builder properties. For example, said materials include copolymers of polyacrylic acid, polymaleic acid, and appropriate polyacrylic / polymaleic acid and their salts, such as those sold by BASF under the trademark Sokalan having a molecular weight ranging from about 5,000 to 100,000. Another suitable type of detergency builder comprises the water soluble salts of high fatty acids, for example "soap". These include alkali metal soaps such as the sodium, potassium, ammonium and alkylammonium salts of higher fatty acids containing from about 8 to about 24 carbon atoms, and preferably from about 12 to about 18 carbon atoms. Soaps can be made by direct saponification of fats and oils or by the neutralization of free fatty acids. Particularly useful are the sodium and potassium salts of the fatty acid mixtures derived from tallow and coconut oil, for example, coconut soap and sodium potassium tallow. If used as all or part of the additional particulate material, the insoluble organic builders may, in general, comprise from about 2% to about 20% by weight of the compositions mentioned herein. More preferably, said detergency builder material may comprise from about 4% to about 10% by weight of the composition. (d) Inorganic Alkalinity Sources Other possible types of additional particulate material that can be suspended in the liquid detergent compositions mentioned herein may comprise a material that serves to provide aqueous wash solutions formed from said generally alkaline compositions in nature. Such materials may or may not also act as detergency builders, for example, as counterbalancing materials - ..*.saw -,. _.._- .. -t- ~~ - «- t i - - Hft ~. _-t-. ... - ^ --._. - ---.-. ^. i. _. . í- ... ..-- -.- »,. jaií . i.t to the adverse effects of water hardness on detergency performance. Examples of suitable alkalinity sources include water-soluble alkali metal carbonates, bicarbonates, borates, silicates and metasilicates. Although for ecological reasons it is not preferred, water-soluble phosphate salts can also be used as sources of alkalinity. These include alkali metal pyrophosphates, orthophosphates, polyphosphates and phosphonates. Of all these alkalinity sources, alkali metal carbonates such as sodium carbonate are most preferred. The source of alkalinity, if it is in the form of a hydratable salt, can also serve as a desiccant in the liquid detergent compositions mentioned herein. The presence of an alkalinity source that is also a desiccant can provide benefits in terms of chemical stability of those components of the composition such as the peroxygen bleaching agent which may be susceptible to water deactivation. If it is used as all or part of the additional particle material component, the source of alkalinity will generally comprise from about 1% to about 25% by weight of the composition mentioned herein. More preferably, the source of alkalinity may comprise from about 2% to about 15% by weight of the composition. Such materials, while soluble in water, will generally be insoluble in non-aqueous detergent compositions described herein.
As indicated hereinafter, the non-aqueous liquid detergent compositions mentioned herein can be in the form of bleaching agent and / or other particulate materials as a solid phase suspended and dispersed through a liquid phase with surfactant, preferably structured, preferably non-aqueous. Generally, the structured non-aqueous liquid phase will comprise from about 49% to about 99.95%, more preferably from about 52% to about 98.5%, by weight of the composition with additional dispersed solid materials comprising about 1% to about 50%, more preferably from about 29% to about 44%, by weight of the composition. Very small amounts of water can be incorporated in non-aqueous forms with particles of the liquid detergent composition present. However, in such embodiments, the amount of free water should not, under any circumstances, exceed about 1% by weight of the compositions mentioned herein. More preferably, the water content of the non-aqueous detergent compositions mentioned herein will comprise less than about 1% by weight. As shown in this invention, the compositions in this invention can also be used to form aqueous laundry detergent compositions. Additional components suitable for use in an aqueous liquid laundry detergent composition are -? ? ? tÉi-7lfi can be found in Pat. US No. 5,783,548 to Fredj et al. and Pat US No. 5,648,327, to Smerznak et al. The non-aqueous liquid detergent compositions with particles mentioned herein will be relatively viscous and will have phase stability under conditions of commercialization and use of such compositions. Frequently, the viscosity of the compositions mentioned herein will range from about 300 to 8,000 cps, more preferably from about 1000 to 4,000 cps. For purposes of this invention, the viscosity is measured with a Carrimed CSL2 rheometer at a shear rate of 20 s-1. The preparation of non-aqueous liquid detergent compositions is discussed in greater detail in the co-pending application of January 1. Kahn et al., Entitled "Preparation of Liquid Detergent Compositions in Non-Aqueous Particles with Liquid Phase Structured with Surfactant Agent", of which Case P &G is No. 6150, series no. 09 / 202,964, registered on December 23, 1998, is incorporated herein by reference. An effective amount of liquid detergent compositions mentioned herein added to water to form aqueous laundry / bleach solutions may comprise sufficient amounts to form about 500 to 10,000 ppm of composition in aqueous solution. More preferably, from about 800 to 8,000 ppm of the detergent compositions mentioned herein will be provided in aqueous wash / bleach solution.
B. Granular / powder products The granular / powder detergent products of the present invention further comprise one or more of the hydrotropes, preferably one or more preferred ingredients below and optionally, one or more conventional adjunct materials. Such conventional adjunct materials may include one or more of the solid particulate materials described above in the Liquid Products section or later in the Conventional Detergent Attachment Materials section. While the use of hydrotropes is to provide desirable phase formation and the viscosity of the product is well known, the use of these organic molecules as hydrotropes has not previously been shown to avoid the gelling and / or thickness of the detergent compositions shown herein and in this way improve the dissolution and dispersion performance of a granular detergent product. Gelification has previously been observed in detergent products prepared without the hydrotropes as defined in the present invention, when the products come into contact with water for the first time and are diluted. Without being limited by theory, it is believed that this phenomenon of gelation results from the particles with surfactants that form either phases of viscous surfactants (typically layered, spherulitic or hexagonal phases) or "gel lumps" connected in their inner part on contact with water in the wash solution or water to wash at certain concentrations of surfactant. A certain correlation has been found between the viscosity of the product-water mixture at the critical dilution boundary where gelation is observed and the amount of viscous surfactant phase formed in this boundary. The problem is particularly pronounced in those areas where the washing of fabrics in automatic clothes washers occurs in 10 relatively cold washing water or under moderate agitation (such as in Japan). The typical surfactant-water phase diagram shows regions of phase stability of high viscosity gel or pure surfactant at relatively cold wash water temperatures. And under conditions of moderate agitation, there is insufficient mechanical energy 15 imparted by the agitator to interrupt the formation of these high viscosity phases. The granular detergent compositions shown herein may be in the form of a single particle or in the form of multiple particles each having its own composition. In the case where the detergent When it is composed of multiple detergent particles, it is preferable that the organic hydrotropes shown above contain or cover the surface of those particles that are rich in surfactants.
Preferred Ingredients Detersive Surfactants - The anionic surfactants useful in the present invention are divided into the alkyl sulfonate surfactants which according to the present invention are separated from the electrolytes in the detergent composition and the remaining anionic surfactants that may be formulated in any particle. For the purposes of the present invention, the alkyl sulfates are defined as alkyl sulphates, alkylalkoxy sulfate, alkylsulfonates, alkylalkoxy carboxylate, alkoxylated alkylsulfates with the remaining anionic surfactant selected from the group consisting of alkylbenzenesulfonate, alphaolephinsulfonate, paraffinsulfonates, alkyl ester sulphonates, sarcosinates, taurinates and mixtures thereof. When present, the surfactant will typically be present in an effective amount throughout the detergent composition. More preferably, the composition may contain at least about 0.5%, more preferably at least about 5%, even more preferably still, at least about 10% by weight of said anionic surfactant composition. The composition will also preferably contain no more than about 90%, more preferably no more than about 50%, even more preferably, no more than about 30% by weight of said anionic surfactant composition.
Alkyl sulfate surfactants provide excellent general cleaning ability either alone and particularly when used in combination with polydroxylic fatty acid amides (see below) including good grease / oil cleaning over a wide range of temperatures, wash concentrations, and wash times, the alkyl sulfate solution can be obtained, as well as improved formulation capacity in liquid detergent formulations are acids or water soluble salts of the formula ROSO3M wherein R is preferably a C10-C24 hydrocarbyl, preferably an alkyl or hydroxyalkyl with a C10-C20 alkyl component. More preferably a C12-Cis alkyl or hydroxyalkyl, and M or H is a cation, for example, an alkali metal (Group IA) cation (eg, sodium, potassium, lithium), substituted or unsubstituted ammonium cations such as methyl-dimethyl- and trimethylammonium cations and quaternary ammonium, for example, tetramethylammonium and dimethylpiperidinium and cations derived from alkanolamines such as ethanolamine, diethanolamine, triethanolamine and mixtures thereof, and the like. Typically, C12-16 alkyl chains are preferred because of their low wash temperature (e.g., less than about 50 ° C) and C6-6? Alkyl chains are preferred because of their high wash temperatures (for example. example, above about 50 ° C) Another suitable type of alkyl sulfate surfactant according to the present invention are the secondary (2,3) alkyl sulphates. These surfactants are preferably of the formula 5 wherein x and (y + 1) are integers of at least about 7, preferably at least about 9. Preferably these surfactants contain from about 10 to 18 carbon atoms. Suitable examples of these anionic surfactants are shown in US Pat. No. 3,234,258 Morris, issued February 8, 1996; US 5,075,041 Lutz, 10 issued December 24, 1991; US 5,349,101 Lutz et al., Issued September 20, 1994; and US 5,389,277 Prieto, issued February 14, 1995, all incorporated herein by reference. Another suitable type of alkyl sulfate surfactant according to the present invention are the alkoxylated alkyl sulphates. These surface active agents are acids or water soluble salts typically of the formula RO (A) mSO3M wherein R is a C10-C24 alkyl group or unsubstituted hydroxyalkyl, having a C10-C24 alkyl component, preferably a hydroxyalkyl or C12 alkyl -C20. More preferably hydroxyalkyl or C12-C18 alkyl, A is an ethoxy or propoxy unit, m is greater than zero, typically between about 0.5 and about 6, more preferably between about 0.5 and about 3, and M is H or a cation which may be, for example, a metal cation (eg, sodium, potassium, lithium, etc.), ammonium cation or substituted ammonium. The alkyl sulphates ¿Á «áÍS = ¿áÍÍ8 ----- Éá. --- i-. .. t.: .¡z i, AA ....-, - i.A,. 1 - ^ -. .. -.- .. .. - ---_, ---. - », z-AAAz -Az. t &A-z. Y . AA and J ethoxylates as well as propoxylated alkyl sulphates are contemplated herein. Specific examples of substituted ammonium cations include methyl-dimethyl trimethylammonium cations and quaternary ammonium cations, such as tetramethylammonium, dimethyl piperidinium and cations derived from alkanolamines, for example, monoethanolamine, diethanolamine, and triethanolamine and mixtures thereof. Exemplary surfactants are polyethoxylated C12-C18 alkyl sulfate (1.0), polyethoxylated C12-C18 alkyl sulfate (2.25), polyethoxylated C12-C18 alkyl sulfate (3.0) and polyethoxylated C12-C18 alkyl sulfate (4.0) wherein M is conventionally selected from sodium and potassium. The surfactants for use in this invention can be made from synthetic or natural alcohol feedstocks. The lengths of the chains represent the average hydrocarbon distributions, including branching. The anionic surfactant component can comprise alkyl sulfates and alkyl ether sulfate derived from conventional alcohol sources, for example, natural alcohols, synthetic alcohols such as those sold under the trademark of NEODOL ™, ALFOL ™, LIAL ™ LUTENSOL ™ , and similar. The alkyl ether sulfates are known as polyethoxylated alkyl sulphates. Another type of alkyl sulfate surfactant according to the present invention are one or more (preferably a mixture of one or more) branched-chain surfactants at the center, preferably branched middle chain alkoxyalkyl alcohols having the formula: R R1 R2 I I I CH3CH2 (CH2) wCH (CH2)? CH (CH2) and CH (CH2) z (EO / PO) mOH medium chain branched alkyl sulphates having the formula: R R1 R I I I CH3CH2 (CH2) wCH (CH2)? CH (CH2) and CH (CH2) zPS? 3lv1 branched chain alkylalkoxy sulfates with the formula R R1 R2 I I I CH3CH2 (CH2) wCH (CI2)? CH (CH2) and CH (CH2) z (EaPO) mOS? 3M wherein the total number of carbon atoms in the branched primary alkyl portion of these formulas (including the R, R1 and R2 branches, but not including the carbon atoms comprising any EO / PO alkoxy moiety) is 14 to 20. , and wherein in addition to this surfactant mixture the average total number of carbon atoms in the portions branched primary alkyl with the above formula is within the limit of greater than 14.5 to about 17.5 (preferably about 15 to about 17); R, R1 and R1 are selected independently of hydrogen, CrC3 alkyl, and mixtures thereof, preferably methyl; as long as R, R1 and R2 are not all hydrogen and, when z is 1, at least R or R1 is not hydrogen. M is a water-soluble cation and can comprise more than one type of cation, for example, a mixture of sodium and potassium. The index w is an integer from 0 to 13; x is an integer from 0 to 13; and is an integer from 0 to 13; z is an integer of at least 1; as long as w + x + y + z is from 8 to 14. EO and PO represent ethyleneoxy units and propyleneoxy units with the formula Respectively, however, other alkoxy units including 1, 3-propyleneoxy, butoxy and mixtures thereof are suitable as alkoxy units added to the branched alkyl portions. of medium chain. The medium chain branched surfactants are preferably mixtures comprising a surfactant system. Therefore, when the surfactant system comprises an alkoxylated surfactant, the M index indicates the average degree of alkoxylation within the surfactant mixture. As such, the index m is at least about 0.01, preferably within the range of about 0.1, more preferably about 0.5, more preferably about 1 to about 30, preferably about 10., More preferably of about 5. When considering a medium chain branched surfactant system comprising only alkoxylated surfactants, the value of the index m represents a distribution of the average degree of alkoxylation corresponding to m, or it can be a single specific chain with alkoxylation (e.g., ethoxylation and / or propoxylation) of exactly the number of units corresponding to m. Preferred medium chain branched surfactants of the present invention which are suitable for use in the surfactant system of the present invention have the formula: CH3 (CH2) aCH (CH2) bCH2 (EO / PO) mOS03M or the formula where a, b, d and e are integers such that a + b is from 10 to 16 and d + e is from 8 to 14; M is selected from sodium, potassium, magnesium, ammonium and substituted ammonium, and mixtures thereof. The surfactant systems of the present invention comprising medium chain branched surfactants are preferably formulated in two modalities. A first preferred embodiment comprises medium chain branched surfactants which are formed from feedstock comprising 25% or less of medium chain branched alkyl units. Therefore, prior to mixing with any other conventional surfactant, the medium chain branched surfactant compound will comprise 25% or less of surfactant molecules which are non-linear surfactants. A second preferred embodiment comprises medium chain branched surfactants which are formed from feed material comprising from about 25% to about 70% of medium chain branched alkyl units. Therefore, before mixing with any other conventional surfactant, the medium chain branched surfactant compound will comprise from about 25% to about 70% molecules 10 of the surfactant which are non-linear surfactants. These surfactants are described further in U.S. Patent Application No. 60/61, 971, Proxy Case No. 688IP October 14, 1997, No. 60/061, 975, Proxy Case No. 6882P October 14, 1997, No. 60 / 062,086, Proxy Case No. 6883P October 14 of 15 1997, No. 60/061, 916, Proxy Case No. 6884P October 14, 1997, No. 60/061, 970, Proxy Case No. 6885P October 14, 1997, No. 60 / 062,407, Proxy Case No. 6886P October 14, 1997. Other suitable medium chain branched surfactants can be found in the US patent applications serial Nos. 60 / 032,035, (case 20 No. 6401 P), 60/031, 845 (case No. 6402P), 60/031, 916 (case No. 6403P), 60/031, 917 (case No. 6404P), 60/031, 761 (case No. 6405P), 60/031, 762 (case No. 6406P) and 60/031, 844 (case No. 6405P). They are also appropriate mixtures of these branched surfactants with conventional linear surfactants for use in the present compositions.
Of the anionic surfactants according to the present invention that are not included in the alkyl sulfates according to the present invention, a type of surfactant that can be used includes alkyl ester sulfonates. These are desirable because they can be create with renewable resources, not oil. The preparation of the alkyl ester sulfonate surfactant compound can be carried out according to methods described in the technical literature. For example, linear esters of C8-C20 carboxylic acids can be sulfonated with gaseous SO3 according to "The Journal of the American Oil chemists Society", 52 (1975), pp 323-329. The starting materials that could include natural fatty substances as derived from tallow, palm, and coconut oils, etc. The preferred alkyl ester sulfonate surfactant, especially for washing applications, consists of surfactants of alkyl ester sulfonate with the following structural formula: ## STR3 ## wherein R3 is Ide C8-C20 hydrocarbyl, preferably an alkyl or S03M combination thereof, R4 is a C1-C6 hydrocarbyl, preferably an alkyl, or combination thereof the same, and M is a soluble cation that forms salt. Suitable salts include metal salts such as sodium, potassium, and lithium salts, and substituted or unsubstituted ammonium salts, such as methyl-, dimethyl-, trimethyl, and quaternary ammonium cations, for example, tetramethylammonium and dimethyl piperdinium, and cations derived from alkanolamines, for example, monoethanol-amine, diethanolamine and triethanolamine. Preferably, R3 is C? 0-C? 6 alkyl, and R4 is methyl, ethyl or isopropyl. Especially preferred are the methyl ester sulfonates wherein R3 is Cu-alkyl.
Another type of surfactant that can be used includes alkylbenzene sulfonates. These include the linear types (ABS, TPBS), hard, also known as LAS, and created by processes such as various HF or solid HF, for example, DETAL® process (UOP), or created using other Lewis acid catalysts, by Example AICI3, or created using alumina / acidic silica or created from chlorinated hydrocarbons, such as C9-C20 linear alkylbenzenesulfonates, particularly C10-C15 linear alkyl sodium benzene sulfonate. These surfactants are water-soluble salts or acids typically of the formula RASO3M wherein R is a linear or branched C10-C24 alkyl group, preferably a C10-C20 alkyl, more preferably a C10-C18 alkyl. A is an aryl group, preferably benzene, or toluene, more preferably benzene unit, and M is H or a cation which may be, for example, a metal cation (eg, sodium, potassium, lithium, etc.), cation of ammonium or substituted ammonium- The surfactant systems of the laundry detergent compositions of the present invention may also consist of about 0.001%, preferably about 1%, more preferably about 5%, most preferably about from 10% to about 100%, preferably to about 60%, more preferably to about 30% by weight, of the surfactant system, or one or more (preferably a mixture of two or more) modified alkyl arisulfonate surfactants, or MLAS preferably surfactants wherein the aryl unit is a benzene ring having the formula: wherein L is an acyclic hydrocarbyl portion consisting of 6 to 8 carbon atoms; R1, R2, and R3 are each independently hydrogen or C3 alkyl, provided that R1 and R2 do not adhere to the term of unit L; M is a water-soluble cation that has charge q where a and b join to satisfy the charge neutrality. These and other appropriate MLAS surfactants are further described in co-pending US Patent Applications No. 60 / 053,319, Proxy Case No. 6766P filed July 21, 1997, No. 60 / 053,318, Proxy Case No. 6767P filed on July 21, 1997, No. 60 / 053,321, Proxy Case No. 6768P filed on July 21, 1997, No. 60 / 053,209, Proxy Case No. 6769P filed on July 21, 1997, No 60 / 053,328, Proxy case No. 6770P filed on July 21, 1997, No. 60 / 053,186, Proxy case No. 6771 P filed on July 21, 1997, No. 60 / 105,017, Proxy case No 7303P filed on October 20, 1998, No. 60 / 104,962, Proxy Case No. 7304P filed on October 20, 1998, and No. 60 / 144,519, Proxy Case No. 7663P filed on July 19, 1999 Mixtures of these modified surfactants with conventional surfactants and / or branched surfactants, such as dyeing agents. written in the present invention are also suitable for use in the present compositions. Examples of suitable anionic surfactants are provided in "Surface Active Agents and Detergents" (Vol. I and II by Schwartz, Perry and Berch). A variety of such surfactants are also described in US Patent 3,929,678 issued December 30, 1975 to Laughim, et al., In Column 23, line 58 to Column 29, line 23. Other anionic surfactants useful for detersive purposes as well. they can be included in the compositions of this. These may include salts (including, for example, sodium, potassium, ammonium, substituted ammonium salts such as mono-, di- and triethanolamine salts) of soap, secondary or primary alkanesulfonates of C8-C22, C8-C24 olefinsulfonates, acids sulfonated polycarboxylic acids prepared by sulfonation of the pyrolyzed product of alkaline earth metal citrates, for example, as described in British patent specification No. 1, 082,179, alkyl glycerol sulfonates, fatty acyl glycerol sulfonates, fatty oleyl glycerol sulphates, alkyl phenol ether sulfates of ethylene oxide, paraffinsulfonates, alkyl phosphates, isothionates such as acyl isothionates, N-acyl taurates, fatty acid amides of methyltaurate, alkylsuccinamates and sulfosuccinates, monoesters of sulfosuccinate ( especially saturated and unsaturated Ci2-C? 8 monoesters) sulfosuccinate esters (especially C6-C14 saturated and unsaturated diesters), N-acyl sarcosinates, alkyl polysaccharide sulfates such as alkyl polyglucoside sulfates (the compounds 10 non-sulphonated nonionics described below), branched primary alkyl sulphates, alkylpolyethoxycarboxylates such as those of the formula RO (CH 2 CH 2 O) kCH 2 COO-M + wherein R is a C 8 -C 22 alkyl, k is an integer from 0 to 10, and M is a soluble cation that forms salt, and acid grades are esterified with isethionic acid and neutralized with sodium hydroxide. The Resin acids and hydrogenated resin acids are also suitable, such as turpentine resin, hydrogenated turpentine resin, and resin acids and hydrogenated resin acids present or derived from tallow oil. Additional examples are provided in "Surface Active Agents and Detergents" (Vol. I and II by Schwarts, Perry and Berch). They are also described in A general form is a variety of such surfactants in U.S. Patent 3,929,678, issued December 30, 1975 to Laughiin, et al., In Column 23, line 58 to column 29, line 23.
Another type of useful anionic surfactant are so-called dianionics. These are surfactants having at least two anionic groups present in the surfactant molecule. Some suitable dianionic surfactants are further described in US co-pending of series No. 60 / 020,503, (case No. 6160P), 60 / 020,772 (case No. 6161 P), 60 / 020,928, (case No. 6158P) , 60 / 020,832, (case No. 6159P) and 60 / 020,773, (case No. 6162P), all filed on June 28, 1996, and 60 / 023,539, (case No. 6192P), 60/023493, (case No. 6194P), 60 / 023,540 (case No. 6193P) and 60 / 023,527 (case No. 6195P) filed August 8, 1996, the descriptions of which are included in the present invention by reference.
C- Products in tablet The tablet detergent products of the present invention consist in the addition to one or more of the hydrotropes ("binding agents" because they have a cohesive effect on the tablets), preferably one or more preferred ingredients hereinafter and optionally, one or more conventional detergent adjunct materials. Some conventional adjunct materials may include one or more of the particulate materials described under the Liquid Products section and / or the above-mentioned Granulated / Powdered Products section or under the Conventional Detergent Attached Materials section hereinafter.
Detergent tablet formulations generally contain at least a small amount of binder in the composition in order to provide a cohesive effect and promote the integrity of the tablets. For the purpose of this invention, the Cohesive Effect on the particulate material of a detergent matrix is characterized by the force required to break a tablet based on the tested detergent matrix under pressure under controlled compression conditions. The means for evaluating the strength of the tablet (also refer to the diametral tension to the fracture) are provided in pharmaceutical dosage forms: Tablets volume 1 Ed. H.A. Lieberman et al., Published in 1989. It has been found that the addition of these hydrotrope compounds to particulate material prepared in accordance with the present invention has a cohesive effect at the same time that they provide excellent disintegration performance in wash water when forms a tablet by compressing the particulate material. Detergent tablets containing this hydrotrope have a higher tensile force at a constant compaction force or an equal force of tension at a lower compaction force compared to traditional tablets. In addition to the cohesive effect provided by these hydrotropes they also provide the key ingredient to avoid gelling and / or thinning of the detergent compositions shown in the present invention. Gelification has previously been observed in detergent products prepared without the hydrotropes as defined in the present invention, when the products first come into contact and are diluted in water. Without being limited by theory, it is believed that this gelation phenomenon results from particles containing surfactants that form viscous phases of surfactants (typically layered, spherulitic or hexagonal phases) on contact with water in the wash solution or wash water at certain concentrations of agent surfactant. A correlation has been found between the viscosity of the product-water mixture in the critical dilution scale where gelation is observed, and the amount of the viscous phase of the surfactant formed in this scale. Without being limited by theory, it is believed that the hydrotropes described above prevent the formation of the viscous phases of surfactant formed by dilution, because the hydrotrope can interact effectively with ordered, structured layers of the surfactant molecules, break them and promote the formation of isotropic phases of low viscosity of the surfactant. In the present invention, there is also an additional benefit that the inclusion of these special hydrotropes expand the "operating window" of the detergent tablets. The operating window refers to the scale in the density per batch of the detergent tablets, when the detergent tablets are manufactured on an industrial scale. Due to various variables, during the manufacture on an industrial scale of the detergent tablets the density of the detergent tablets varies somewhat from the ideal or preferred density. The operating window is the scale of densities surrounding the preferred density where the tablet is not at the preferred density but is still acceptable. Under the operating window, the density is too low as a result of insufficient packing and cohesion during the compression step and therefore the tablet is very friable and likely to break during handling and storage. On the operative window, the tablet is packaged too tight and is likely to dissolve insufficiently and disperse in a wash solution during the washing process. In addition to these hydrotropes discussed above, the detergent tablets present may also include additional non-gelling binders. Non-gelling binders not only provide cohesive benefits, but also facilitate dissolution. If non-gelling binders are used, suitable non-gelling binders include synthetic organic polymers such as polyethylene glycols, polyvinyl pyrrolidones, polyacrylates and water-soluble acrylate copolymers. The Pharmaical Excipients Second Edition manual has the following classification of binders: acacia, alginic acid, carbomer, sodium carboxymethylcellulose, dextrin, ethylcellulose, gelatin, guar gum, hydrogenated vegetable oil type I, hydroxyethyl cellulose, hydroxypropyl methylcellulose, liquid glucose, aluminum magnesium silicate, maltodextrin, methylcellulose, polymethacrylates, povidone, sodium alginate, starch and zinc. More preferably the binders also have an active cleaning action in the wash water such as cationic polymers, that is, ethoxylated diamine hexamethylene quaternary compounds, bishexamethylene triamines or others such as pentamines, ethoxylated polyethylene amines, maleic acrylic polymers. The non-gelling binders are preferably sprayed and therefore have an appropriate melting temperature below 90 ° C, preferably below 70 ° C and even more preferably below 50 ° C in order not to damage or degrade the other ingredients assets in the matrix. More preferred are non-aqueous liquid binders (that is, not in aqueous solution) which can be sprayed in molten form. However, they can also be solid binders incorporated in the matrix by dry addition but having binding properties within the tablet. Detergent tablets prepared according to the present invention will comprise from about 0.05% to about 5%, preferably from about 0.1% to about 3%, most preferably from about 0.1% to about 1% of the essential hydrotrope in which two polar groups are separated from each other by at least 5, preferably 6, aliphatic carbon atoms. When the optional non-gelling binder materials are used, they will be present in the detergent tablets, they will be used at levels of from about 0.1% to about 7%, preferably from about 0.5% to about 55, more preferably about 1% a about 3% of the detergent tablet. When optional non-gelling binders are used, they will be present in the detergent tablets in a ratio of non-gelling binder to hydrotrope binder of from about 2: 1 to about 60: 1, preferably from about 3: 1 to about 30: 1. , more preferably from about 3: 1 to about 15: 1.
Breaking agents Although it is necessary that the tablets must have good integrity before use, it is also necessary that they should disintegrate rapidly during use, in contact with the washing water. Therefore, it is also known to include a disintegrant that will promote the disintegration of the tablet. Various kinds of disintegrators are known, including the class in which the disintegration is caused by dilation of the disintegrant. Several dilation disintegrants have been proposed in the literature, preference being predominantly directed towards starches, celluloses and water-soluble organic polymers. Inorganic expansion disintegrators such as bentonite sand have also been mentioned, for example in EP-A-466,484. Some materials act as binders and disintegrators. It is also mentioned therein that disintegrators can provide complementary enhancement, anti-redeposition or fabric softening properties. The amount of disintegrant is preferably 1 to 5%. It is proposed in EP-A-466,484 that the tablet may have a heterogeneous structure comprising a plurality of discrete regions, for example, layers, inserts or coatings.
Tablet Manufacturing The detergent tablets of the present invention can be prepared by simply mixing the solid ingredients together and compressing the mixture in a conventional tablet press as used, for example, in the pharmaceutical industry. Preferably the main ingredients, in particular the gelling surfactants, are used in the form of particles. Any liquid ingredient, for example surfactant or foam suppressant, can be incorporated in a conventional manner into the ingredients into solid particles. The ingredients such as builder and surfactant can be dry sprayed in a conventional manner and then compacted at an appropriate pressure. Preferably, the tablets according to the invention are compressed using a force less than 100000N, more preferably less than 50000N, even more preferably less than 5000N and most preferably less than 3000N. In truth, the most preferred embodiment is a tablet compressed using a force less than 2500N. The particle material used to make the tablet of this invention can be made by any process to form particles or granulation. An example of such a process is spray drying (countercurrent or DC direct spray drying tower) that typically provides low bulk densities of 600g / l or less. Higher density particle materials can be prepared by granulation and densification in a high shear batch granulator / mixer or by continuous granulation and densification process (for example, using Lodige (R) CB and / or Lodige (R ) KM). Other suitable methods include fluidized bed processes, compaction methods (eg, roll compaction), extrusion, as well as any particulate material made by any chemical method such as flocculation, crystallization, concretion, etc. The individual particles can also be another particle, granule, sphere or grain. The compounds of the particulate material can be mixed by any conventional means. By batch it is appropriate, for example, in a concrete mixer, Nauta mixer, ribbon mixer or any other. Alternatively, the mixing process can be carried out continuously by putting each compound by weight into a moving band, and combining them into one or more drums or mixers. The non-gelling binder can be sprinkled to the mixture of some, or all, of the components of the particulate material. Other liquid ingredients can also be sprinkled to the mixture of the compounds either separately or premixed. For example, perfumes and suspensions of optical brighteners can be sprayed. Finely divided flow aid (powder agent such as zeolites, carbonates, silica) can be added to the particulate material ? Ii *? .Oyy * Í.lf '? * ».í ?? .- ».z ..Alé- ,. after sprinkling the binder, preferably towards the end of the process, to make the mixture less sticky. The tablets can be manufactured using any compaction process, such as tabletting, briquette or extrusion, preferably tabletting. The appropriate equipment includes a single standard stroke or rotary press (such as Courtoy (R), Korch (R), Manesty (R), or Bonals (R)). The tablets prepared according to this invention preferably have a diameter between 15 g and 100 g. The ratio of weight to diameter (or width) of the tablets is preferably greater than 1: 3, more preferably greater than 1: 2. The compaction pressure used to prepare these tablets needs not to exceed 100000 kN / m2, preferably not to exceed 30000 kN / m2, more preferably not to exceed 5000 kN / m2, even more preferably not to exceed 3000 kN / m2 and most preferably not to exceed 1000 kN / m2. In a preferred embodiment according to the invention, the tablet has a density of at least 0.9 g / cc, more preferably at least 1.0 g / cc and preferably less than 2.0 g / cc, more preferably less than 1.5 g / cc. cc, even more preferably less than 1.25 g / cc and most preferably less than 1.1 g / cc. Multiple layer tablets can be made by known techniques. - ^ - ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ further improving by making a coated tablet, the cover coating an uncoated tablet according to the invention, consequently further improving the mechanical characteristics of the tablet and maintaining or further improving the dispersion In one embodiment of the present invention, the tablets then can be coated so that the tablets do not absorb moisture, or absorb moisture only at a very slow rate.The coating is also strong so that moderate mechanical shocks to which the tablets are subjected during handling, packing and shipping results in no more than low levels of breakage or wear.Finally, the coating is preferably brittle, so that the tablet breaks when subjected to stronger mechanical shocks.In addition, it is advantageous if the coating material either it is dispersed under alkaline conditions, or it is rapidly emulsified by surfactants. This helps to avoid the problem of visible residues in the window of a washing machine at the front during the washing cycle, and also avoids deposition of particles or lumps of the coating material in the laundry load. The solubility of water is measured following the test protocol of ASTM E1148-87 entitled "Standard Test Method for Measurements of Aqueous Solubility". a, > .!; * -, i - -. K - ..
Suitable coating materials are dicarboxylic acids. Particularly, the dicarboxylic acids are selected from the group consisting of oxalic acid, malic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, undecandoic acid, dodecandioic acid, tridecandioic acid and mixtures of the same. The coating material preferably has a melting point of 40 ° C to 200 ° C. The coating can be applied in a number of ways. Two preferred coating methods are a) coating with a material 10 melted and b) coating with a solution of the material. In a), the coating material is applied at a temperature above its melting point and solidifies in the tablet. In b), the coating is applied as a solution, where the solvent is dried to leave a coherent coating. The substantially insoluble material is 15 can be applied to the tablet, for example, by spraying or submerging. Normally, when the molten material is sprayed onto the tablet, it will solidify rapidly to form a coherent coating. When the tablets are immersed in the molten material and then removed, rapid cooling again causes rapid solidification of the material. 20 coating. Clearly, substantially insoluble materials having a melting point of less than 40 ° C are not sufficiently solid at room temperature and it has been found that materials having a melting point of about 200 ° C are not practical to use.
Preferably, the materials are melted in the range of 60 ° C to 160 ° C, more preferably 70 ° C to 120 ° C. By "melting point" is meant the temperature at which the material when heated slowly, for example, in a capillary tube becomes a clear liquid. A coating of any desired thickness can be applied in accordance with the present invention. For most purposes, the coating forms from 1% to 10%, preferably from 1.5% to 5%, of the weight of the tablet. The coatings of the tablet are preferably very hard and provide extra strength to the tablet. In a preferred embodiment of the present invention, the fracture of the coating in the wash is improved by adding a disintegrant to the coating. This disintegrant will swell once upon contact with the water and break the coating into small pieces. This will improve the dispersion of the coating in the wash solution. The disintegrator is suspended in the melting of the coating at a level of up to 30%, preferably between 5% and 20%, most preferably between 5 and 10% by weight. Potential disintegrators are described in the Pharmaceutical Excipients Manual (1986). Examples of suitable disintegrants include starch: modified natural or pregelatinized starch, sodium gluconate starch; rubber; gum agar, guar gum, locust bean gum, karaya gum, pectin gum, tragacanth gum; sodium croscarmilose, crospovidone, cellulose, carboxymethyl cellulose, alginic acid and its salts including sodium alginate, silicon dioxide, clay, polyvinylpyrrolidone, soy polysaccharides, ion exchange resins and mixtures thereof.
Tension strength Depending on the composition of the initial material, and the shape of the tablets, the compaction force used can be adjusted so as not to affect the tension force, and the disintegration time in the washing machine.
This procedure can be used to prepare homogeneous tablets or layers of any size and shape. For a cylindrical tablet, the tensile force corresponds to the diametral fracture tension (DFS) which is a way of expressing the strength of a tablet, and is determined by the following equation: = 2F pDt where F is the maximum force ( Newton) to cause stress failure (fracture) as measured by a tablet hardness tester VK 200 provided by Van Kell Industries, Inc. D is the diameter of the tablet and t the thickness of the tablet. (Dosage forms of pharmaceutical method: Tablets Volume 2 Pages 213 to 217). A diametral fracture tension of at least 25 kPa is preferred.
-, * -J. *.? ¿??? ~ T ~ * 4tí - Bjj ^^ ^ HHÜ ^ á. ^ £ g¡_. . jfa Aáta? li This applies similarly to non-cylindrical tablets, to define the tensile force, where the cross section normal to the weight of the tablet is not round, and where the force is applied along a direction perpendicular to the direction of the height of the tablet and normal next to the tablet, with the side perpendicular to the non-round cross section. - » Optional Conventional Detergent Attached Ingredients In addition to the compounds of the compositions of the present invention described above, the detergent compositions of the present invention can, and preferably will, contain various other optional compounds. (a) Inorganic builders The detergent compositions of the present invention may optionally contain one or more types of inorganic builders beyond those listed above that also function as alkalinity sources. Such inorganic builders may include, for example, aluminosilicates such as zeolites. Zeolites aluminosilicates, and their use as builders are more fully described in Corkill et al., US Patent No. 4,605,509; issued August 12, 1986, the description of which is incorporated in the present invention by reference. Crystalline layer silicates, such as those described in this EUA '509 patent, are also suitable for use in the detergent compositions in the present invention. If used, optional inorganic builders may comprise from about 2% to about 15% by weight of the compositions of the present invention. (b) Enzymes Enzymes may be included in the formulations of the present invention for a wide variety of factory purposes for laundry, including removal of protein-based, base stains. 10 carbohydrate, or triglyceride base, to avoid the transfer of refuge dyes, and for factory restoration. It is believed that the addition of the special hydrotropes described above will increase the performance of the enzymes in a detergent composition. This is because as the hydrotropes raise the dissolution rate of the detergent composition, the rate At which enzymes come into contact with water and are activated, it will also rise and the corresponding detersive benefits provided by the activated enzymes will also rise. This behavior is seen in both aqueous and non-aqueous detergent compositions. The enzymes to be incorporated include proteases, 20 amylases, lipases, mannanase, cellulases and peroxidases, as well as mixtures thereof. Other types of enzymes can also be included. They can be of any appropriate origin, such as vegetable, animal, bacterial, fungal and yeast origin. However, your choice is governed by several factors such as pH activity and / or optimum stability, thermostability, stability against active detergents, builders and so on. In this regard, bacterial or fungal enzymes, such as bacterial amylases and proteases, and fungal celluloses are preferred. Enzymes are normally incorporated at levels sufficient to provide up to about 5 mg by weight, more typically from about 0.01 mg to about 3 mg, of the active enzyme per gram of the compositions. Unless otherwise indicated, the compositions of the present invention will typically comprise from about 0.001% to about 5%, preferably 0.01% -1.0% by weight of a commercial enzyme preparation. Protease enzymes are generally present in said commercial preparation at levels sufficient to provide 0.005 to 0.1 Anson units (AU) of activity per gram of composition. Suitable examples of proteases are the subtilisins that are obtained from classes of Bacillus subtilis and Bacillus licheniforms. Another suitable protease is obtained from a class of Bacillus, which has maximum activity throughout the pH range of 8-12, developed and sold by Novo Industries A / S under the trademark name ESPERASE®. The preparation of this enzyme and analogous enzymes is described in British patent specification No. 1, 243,784 by Novo Industries A / S. Suitable proteolytic enzymes for removing protein-based stains that are commercially available include those marketed under the brand names ALCALASE® and SAVINASE® by Novo Industries A / S (Denmark) and MAXATASE® by International Bio-Synthetics, Inc. . (Netherlands). Other proteases include Protease A (see European patent application 130,756, published January 9, 1985) and Protease B (see European serial patent application No. 87303761.8, filed on April 28, 1987, and the application for European Patent 130,756, Bott et al., published January 9, 1985). Amylases include, for example, amylases described in British Patent Specification No. 1, 296,839 (Novo Industries A / S), 10 RAPIDASE®, International Bio-Synthetics, Inc., and TERMAMYL®, Novo Industries A / S. Mannanases include the following three degrading mannan enzymes: EC 3.2.1.25: ß-mannosidase, EC 3.2.1.78: Endo-1, 4-ß-mannosidase, referred to therein as "mannanase" and EC 3.2.1.100: 15 1, 4-ß-manobiosidase (IUPAC Classification - Enzyme Nomenclature, 1992 ISBN 0-12-227165-3 Academic Press). More preferably, the detergent compositions of the present invention comprise a β-1,4-Mannosidase (E.C. 3.2.1.78) referred to as Mananase. The term "mannanase" or "galactomannase" denotes a 20 mananaza enzyme defined according to the technique as it is officially called manan endo-1, 4-beta-manosidases and which has the alternative names beta-mannase and endo-1,4-mannanase and which catalyzes the reaction: random hydrolysis of binding 1, 4-beta-D-mannosidicas in mannans, galactomannans, glucomannans and galactoglucomannans. In particular, Mananasas (EC 3.2.1.78) constitute a group of polysaccharides that degrade mannans and denote enzymes that have the ability to cut polymale chains containing mañosa units, that is, they have the ability to cut glycosidic linkages in mannans, glucomannans , galactomannans and galactogluco-manans. The mannans are polysaccharides that have a base structure composed of ß-1, 4- linked mannose and glucose; galactomannans and galactoglucomannans are mannans and glucomannans with a-1,6-galactose linked to the lateral branch. These 10 compounds can be acetylated. The cellulase enzymes used in the instant detergent compositions are preferably incorporated at levels sufficient to provide up to about 5 mg by weight, more preferably about 0.01 mg to about 3 mg of enzyme 15 active per gram of the composition. Unless otherwise indicated, the compositions of the present invention preferably comprise from about 0.001% to about 5%, preferably 0.01% -1.0% by weight of a commercial enzyme preparation. The cellulase useful in the present invention includes both bacterial or fungal cellulase. Preferably, they will have 20 an optimum pH between 5 and 9.5. Appropriate cellulases are described in U.S. Patent No. 4,435,307, Barbesgoard et al., Issued March 6, 1984, which describes fungal cellulase produced from the Humicola insolves and Humicola DSM1800 class or a cellulase 212-producing microorganisms that belong to the genus Aeromonas, and cellulase extracted from the hepatic pancreas of a marine mollusk (Dolabella Auricular Solander). Appropriate cellulases are also described in GB-A-2-075,028; GB-A-2,095,275 and DE-OS-2,247,832. In addition, cellulases especially suitable for use in the present invention are described in WO 92-13057 (The Procter &Gamble Company). Most preferably, the cellulases used in the instant detergent compositions are commercially purchased from NOVO Industries A / S under the product names CAREZYME® and CELLUZYME®. Suitable lipase enzymes for detergent use include those produced by microorganisms of the Pseudomonas group, such as Pseudomonas stutzeri ATCC 19,154, as described in British Patent 1, 372,034. See also lipases in Japanese Patent Application 53,20487, put to public inspection on February 24, 1978. This lipase is available from Amano Pharmaceutical Co. Ltd., Nagoya, Japan, under the trademark name AMANO-CES® , hereinafter referred to as "Amano-P". Other commercial butterflies include AMANO-CES®, Chromobacter viscosum lipases, for example, Chromobacter viscosum var, lipolyctum NRRLB 3673, commercially available from Toyo Jozo Co., Tagata, Japan; and additionally Chromobacter viscosum lipases from U.S. Biochemical Corp., USA and Disoynth Co., The Netherlands, and lipases from Pseudomonas gladioli. The LIPOLASE® enzyme derived from Humicola lanuginosa and commercially available from Novo Industries A S (see also EPO 341, 947) is a preferred lipase for use in the present invention. Peroxidase enzymes are used in combination with oxygen sources, for example, percarbonate, perborate, persulfate, hydrogen peroxide, etc. They are used for "bleaching solutions", that is, to avoid transfer of colors or pigments removed from substrates during washing operations to other substrates in the washing solution. Peroxidase enzymes are known in the art, for example, in PCT International Application WO 89/099813, published October 19, 1989, by O. Kirk, assigned to Novo Industries, A / S. A wide range of enzyme materials and means for their incorporation into synthetic detergent compositions are also described in U.S. Patent No. 3,553,139, issued January 5, 1971 to McCarty et al. The enzymes are further described in U.S. Patent No. 4,101, 457, Place et al., Issued July 18, 1978, and in U.S. Patent No. 4,507,219, Hughes, issued March 26, 1985. The materials of Enzyme used for liquid detergent formulations, and their incorporation into such formulations, are described in U.S. Patent No. 4,261, 868, Hora et al., issued April 14, 1981. Enzymes for use in detergents can be stabilized by several techniques Enzyme stabilization techniques are described and exemplified in U.S. Patent No. 3,600,319, issued August 17, 1971 to Gedge, et al., And European Patent Application Publication No. 0 199 405, application No. 86200586.5 , published on October 29, 1986, Venegas. Enzyme stabilization systems are also described, for example, in U.S. Patent No. 3,519,570. Enzymes added to the compositions of the present invention in the form of conventional enzyme granules are especially preferred for use in the present invention. Said granules will generally have a size of about 100 to 1,000 microns, more preferably about 200 to 800 microns and will be suspended throughout the liquid phase of the composition. It has been found that the granules in the compositions of the present invention, in comparison with other forms of enzymes, especially show desired enzyme stability in terms of retention of enzyme activity over time. Therefore, compositions using enzyme granules need not contain conventional enzyme stabilizers such as are most frequently used when the enzymes are incorporated in aqueous liquid detergents. (c) Steaming agents The detergent compositions of the present invention may also optionally contain a chelating agent which serves to chelate metal ions, for example, iron and / or manganese, within the detergent compositions of the present invention. Such chelating agents therefore serve to form complexes with metal impurities in the composition that would otherwise tend to deactivate the compounds of the composition such as the peroxygen bleaching agent. .. ^, - and-? Y *.*. i. I * Useful chelating agents can include amino carboxylates, phosphonates, amino phosphonates, polyfunctionally substituted flavoring chelating agents and mixtures thereof. Amino carboxylates useful as optional chelating agents include ethylenediaminetetraacetates, N-hydroxyethyl-ethylenediaminetriacetates, nitrilotriacetates, ethylene diamine tetrapropionates, triethylenetetraminehexacetates, diethylenetriaminpentaacetates, ethylenediaminedisuccinates and ethanol diglycins. The alkali metal salts of these materials are preferred. The amino phosphonates are also suitable for use as chelating agents in the compositions of this invention when at least low levels of total phosphorus are allowed in detergent compositions, and include ethylene diamine tetrakis (methylene phosphonates) as DEQUEST. Preferably, these amino phosphonates do not contain groups Alkyl or alkenyl with more than about 6 carbon atoms. Preferred chelating agents include hydroxyethyldiphosphonic acid (HEDP), pentatriaminediethylene acetic acid (DTPA), ethylene diamine disuccinic acid (EDDS) and dipicolinic acid (DPA) and salts thereof. The chelating agent can, of course, also act as a 20 detergency builder during the use of the compositions of the present invention for fabric laundry / bleaches. The chelating agent, if employed, may comprise from about 0.1% to 4% by weight of the compositions of the present invention. More preferably, the agent ti ^ iMa? a «M« ÍÍÉill «ÉiBfliát ----. .-.-. i i »?? m M? ia.,», ..? -f-: -. . The chelator will comprise from about 0.2% to 2% by weight of the detergent compositions of the present invention. (d) Foam suppressants Foam suppressors may have particular importance in the present invention due to the high concentration of the detergent compositions. The use of foam suppressors in "high concentration cleaning procedures" is described in greater detail in US 4,489,455 and 4,489,574. A wide range of materials such as suds suppressors can be used, and foam suppressors are well known to those skilled in the art. See, for example, Kirk Othmer Encyclopedia of Chemical Technology, Third Edition, Volume 7, pages 430-447 (John Wiley &Sons, Inc., 1979). A category of foam suppressors of particular interest encompasses fatty monocarboxylic acid and soluble salts thereof. See US Patent 2,954,347, issued September 27, 1960 to Wayne St. John. The fatty microcarboxylic acids and salts thereof used as suds suppressors typically have hydrocarbyl chains of 10 to about 24 carbon atoms, preferably 12 to 18 carbon atoms. Suitable salts include the alkali metal salts such as sodium, potassium, and lithium salts, and ammonium and alkanolammonium salts.
? -? The detergent compositions of the present invention may also contain suds suppressors that do not contain surfactant. These include, for example, high molecular weight hydrocarbons, N-alkylated aminotriazines, monostearyl phosphates, silicone foam suppressors, secondary alcohols (eg, 2-alkyl alkanols) and mixtures of said alcohols with silicone oils. The hydrocarbon foam suppressors are described, for example, in US Patent 4,265,779, issued May 5, 1981 to Gandolfo et al., Silicone foam suppressors are well known in the art and are described, for example, in the 10 US patent 4,265,779, issued May 5, 1981 to Gandolfo et al., And European patent application No. 89307851.9, published on February 7, 1990, by Starch, MS The mixtures of the alcohols and silicone oils are describe in the US 4,798,679, 4,075,118 and EP 150,872. Additional examples of all foam suppressors 15 mentioned above can be found in the provisional patent application of Pramod K. Reddy, entitled "Hydrophilic Index for Aqueous liquid Laundry Detergent Compositions containing LAS", issued under the patent cooperation of P &G Case No. 7332P, filed on November 6, 1998 and with serial No. 60 / 107,477, which is incorporated in the 20 present by reference. This preferred particulate foam control agent used in the present invention contains a silicone anti-foam compound, an organic material and a carrier material in which the Anti-silicone foam compound and organic material. The carrier material is preferably a native starch or zeolite. The silicone antifoam compound is selected from the group consisting of polyorganosiloxane, solid silica and mixtures thereof. Preferably, the organic material is selected from: (a) at least one fatty acid having a carbon chain containing from 12 to 20 carbon atoms, said organic material having a melting point in the range 45 ° C to 80 ° C and water-soluble; (b) at least one fatty alcohol having a carbon chain containing from 12 to 20 carbon atoms, said organic material having a melting point in the range 45 ° C to 80 ° C and water-soluble; (c) a mixture of at least one fatty acid and a fatty alcohol, each having a carbon chain containing from 12 to 20 carbon atoms, said organic material having a melting point in the range 45 ° C to 80 ° C and water-soluble; (d) an organic material having a melting point in the range 50 ° C to 85 ° C and comprising a monoester of glycerol and a fatty acid having a carbon chain containing from 12 to 20 carbon atoms; and (e) a dispersant polymer, and mixtures thereof. Preferably, the dispersant polymer is selected from the group consisting of copolymers of acrylic acid and maleic acid, polyacrylates and mixtures thereof.
The silicone foam suppressors known in the art that can be used are, for example, described in U.S. Patent No. 4,265,779, issued May 5, 1981 to Gandolfo et al., And European Patent Application No. 89307851.9 , published February 7, 1990, by Starch, MS Silicone defoamers and foam controlling agents in granular detergent compositions are described in U.S. Patent No. 3,933,672, Bartoletta et al, and in U.S. Patent No. 4,652,392 , Baginski et al, issued March 24, 1987. An exemplary silicone-based foam suppressant for use of the present invention is a foam suppressant amount of a particulate foam control agent consisting essentially of: (a) fluid polydimethylsiloxane having a viscosity of about 20 cs. at approximately 1, 500 cs. at 25 ° C; (b) from about 5 to about 50 parts per 100 parts by weight of (i) siloxane resin composed of (CH3) 3 SiO-1/2 units of SiO2 units in a ratio of (CH3) 3 SiO-? / 2 of about 0.6: 1 to about 1.2: 1; and (c) from about 1 to about 20 parts per 100 parts by weight of (i) a solid silica gel. Additional foam suppressors are described in greater detail for use in the present invention in U.S. Patent No. 5,762,647 issued June 9, 1998, to Brown et al.
. AÍ.z miÜ.ÍAAiMÉ & A.S.-A. - yy - - (e) Color transfer inhibiting agents and other fabric care compositions The compositions of the present invention may also include one or more materials effective to inhibit the transfer of colors from one fabric to another during the process of cleaning. These agents may be included in either the non-aqueous liquid phase containing the surfactant or in the solid particulate material. Usually, said color transfer inhibiting agents include polyvinyl pyrrolidone polymers, polyamine N-oxide polymers, copolymers of N-vinylpyrrolidone and N-vinylmidasol, manganese phthalocyanine, peroxidase, and mixtures thereof. These agents typically comprise from about 0.01% to about 10% by weight of the composition, preferably from about 0.01% to about 5% and more preferably from about 0.05% to about 25%. More specifically the polyamine N-oxide preferred polymers for use in the present invention contain units having the following structural formula: R-Ax-P; wherein P is a polymerizable unit to which an N-O group can adhere or the N-O group can be part of the polymerizable unit or the N-O group can be attached to both units; A is one of the following structures -NC (O) -, - C (O) O, -S-, -O-, -N =; x is 0 or 1; and R is aliphatic, aliphatic-oxolylated, aromatic, heterocyclic or alicyclic groups, or any combination thereof to which the nitrogen of the N-O group may adhere or the group N- Or is part of these groups. Preferred polyamine N-oxides are those wherein R is a heterocyclic group such as pyrridine, pyrrole, imidazole, pyrrolidine, piperidine and derivatives thereof. The N-H group can be represented by the following 5 general structures: wherein R2, R3 are aliphatic, aromatic, heterocyclic or alicyclic groups or combinations thereof; x, y, and z are 0 or 1; and the nitrogen of the N-O group can adhere or be part of any of the aforementioned groups. The amine oxide unit of the polyamine N-oxides has a pKa < 10, preferably pKa < 7, more preferred pKa < 6. Any polymer base structure can be used provided that the oxide amine polymer formed is water-soluble and has color transfer inhibiting properties. Examples of suitable polymeric base structures are polyvinyls, polyalkylenes, polyesters, polyethers, polyamides, polyimides, polyacrylates, and mixtures thereof. These polymers include block or random copolymers where one type of monomer is an N-oxide amine and the other type of monomer is an N-oxide. Amine N-oxide polymers typically have an amine to amine N-oxide ratio of 10: 1 to 1: 1,000,000 however, the number of amine oxide groups present in the polyamine oxide polymer may vary hl = ÍM «^ Í lÍÍÍBBi¿aM ----. ..-. -. , - A. -.-. »- - -í -j. .. a-tíz. . -. i -, -. ,. - »-. ¿. ..- -TO--.-. -__- A-l > "-tea -.-_""-. - jt j -dü-, i, í by appropriate copolymerization or by an appropriate degree of N-oxidation. Polyamine oxides can be obtained in almost any degree of polymerization. Typically, the average molecular weight is in the range of 5,000 to 1,000,000; more preferred 1, 000 to 500,000; very preferred 5,000 to 100,000. The most preferred polyamine N-oxide useful in the detergent compositions in the present invention is N-oxide poly (4-vinylpyridine) having an average molecular weight of about 500,000 and a ratio of amine to amine N-oxide and about 1: 4 this preferred class of materials can be referred to as "PVNO". Additionally, appropriate color transfer inhibitors can be found in U.S. Patent No. 5,466,802 issued November 14, 1995 to Panandiker et al., Which is incorporated herein by reference. In addition to the color transfer inhibitors, the present invention further comprises additional agents for providing tissue care benefits. As described above, these additional agents may be necessary because the high concentrations of detergent concentrations in the aqueous wash solutions used in the present invention can damage garments and contact fabrics by aqueous wash solutions. Therefore, the present invention may also include materials that could be added to the laundry products that would be associated with the fibers of the fabrics and textiles washed using said products and thus reduce or minimize the tendency of the washed textiles / fabrics to deteriorate in the appearance. Any such additive detergent product material must, of course, have the ability to benefit the appearance of fabric and integrity without unduly interfering with the ability of the washing product to perform its function. Said fabric appearance benefits can include, for example, improved overall appearance of the washed fabrics, reduction of the formation of specks and lint, protection against color fading, improved abrasion resistance, etc. A said fabric care agent that specifically acts to prevent colors from migrating from a surface of a garment and to the aqueous wash solution but also provides other fabric care benefits is polyethyleneimine 30, PEl 600 E20, having the general formula : B [E2NCH2CH2] w [NCH2CH2]? [NCH2CH2)? NE2 wherein B is a continuation by branching of the polyethylenimine base structure. It is an ethyleneoxy unit that has the formula: - (CH2CH20) mH Where m has an average value of about 20. What it means in the present invention an average value of 20 is that sufficient ethylene oxide or another appropriate reagent is reacted with the initial material polyethyleneimine to completely ethoxylate each N-H unit to a degree of 20 ethoxylations. However, those skilled in the art will note that some hydrogen atoms of the N-H unit will be replaced by less than 20 ethoxy units and some will be replaced by more than 20 ethoxy units, therefore, the average number of ethoxylations is 20. The units that comprise the basic structures polyalkyleneimine are primary amino units having the formula: H2N-CH2CH2] - and -NH2 terminating the main base structure and any branching chain, secondary amine units have the formula: HI - [N-CH2CH2] - and which, after modification, have their hydrogen atom replaced by an average of 20 ethyleneoxy units and tertiary amine units having the formula: BI - [N-CH2CH2] - Which are branch points of the main and secondary base structure chains, B representing a continuation of the chain structure by branch. The tertiary units have non-replaceable hydrogen atoms and are therefore not modified by substitution with ethyleneoxy units. During the formation of polyamine base structures, cyclization may occur, therefore, a quantity of cyclic polyamines may be present in the main mixture of polyalkyleneimine base structure. Each primary and secondary amine unit of the cyclic alkyleneimines undergoes modifications by the addition of alkyleneoxy units in the same manner as linear and branched polyalkyleneimines. The indices w, x, y y have values such that the average molecular weight of the polyethyleneimine base structure before modification is about 600 daltons. In addition, those skilled in the art will recognize that each branched chain must end in a primary amine unit, therefore the index value w is y + 1 in the case where cyclic amine base structures are not present. The average molecular weight of each ethylene base structure -NCH2CH2- is about 43 daltons. The polyamines of the present invention can be prepared, for example, by polymerizing ethylene imine in the presence of a catalyst such as carbon dioxide, sodium bisulfite, sulfuric acid, hydrogen peroxide, hydrochloric acid, acetic acid, etc. Specific methods for preparing these polyamine base structures are described in US Patent 2,182,306; Ulrich et al., Issued December 5, 1939; U.S. Patent 3,033,746, Mayle et al., issued May 8, 1962; US Patent 2,208,095, Esselmann et al., issued July 16, 1940; US Patent 2,806,839 Crowther, issued September 17, 1957; and US patent '? * * * fH 2,553,696, Wilson, issued May 21, 1951, all incorporated herein by reference. Other fabric care agents suitable for use in the present detergent compositions include color maintenance polymers. An example of such a polymer is imidazole-epichlorohydrin adduct: (idealized structure) 10 This has an imidazo-epichlorohydrin ratio of 1.36: 1. Additional color maintenance polymers as well as the color maintenance parameter test are described in the provisional co-pending application by Rajan K. Panandiker et al., Entitled "Compositions 15 laundry detergents with a cationically charged color holding polymer ", having P & G Case No. 7488P and Serial No. 60 / 126,074, filed March 25, 1999, which is incorporated herein by reference. As described above, these color maintenance polymers provide total tissue care benefits 20 in addition to color care protection. (f) Thickening agents, viscosity control and / or dispersants IT Jjj ^ ü -ÉÉ »i? -? t & -t * á *? JLAí & A »- £ -.« • ....
The detergent compositions in the present invention may also optionally contain a polymeric material that serves to improve the ability of the composition to maintain its compounds in solid particles in suspension. Said materials can therefore act as thicknesses, viscosity control agents and / or dispersing agents. Such materials are often polymeric polycarboxylates but may include other polymeric materials, such as polyvinylpyrrolidone (PVP) or polyamide resins. Polycarboxylated polymeric materials can be prepared by polymerizing or copolymerizing suitable unsaturated monomers, preferably in their acid form. Unsaturated monomeric acids which can be polymerized to form suitable polymeric polycarboxylates include acrylic acid, maleic acid, (or maleic anhydride), fumaric acid, itaconic acid, acotinic acid, mesaconic acid, citraconic acid, and methylenemalonic acid. The presence in the polymeric polycarboxylates in the present of monomeric segments, do not contain carboxylated radicals such as ethervinylmethyl, styrene, ethylene, etc. are suitably provided in such a way that said segments do not constitute more than about 40% by weight of the polymer. Suitable polymeric polycarboxylates can mainly be derived from acrylic acid. Said polymers based on acrylic acid which are useful in the present invention are the water-soluble salts of the polymerized acrylic acid. The average molecular weight of said polymers in the acid form of preference varies from about 2000 to 100,000, more preferably about 2000 to 10,000, still more preferably from about 4000 to 7000 and still more preferably from about 4000 to 5000. The water-soluble salts of said acidic polymers Acrylics may include, for example, the alkali metal salts. Suitable polymers of this type are known materials. The use of polyacrylates of this type in detergent compositions have been described, for example, in Diehl's US Patent 3,308,067 issued March 7, 1967. Such materials can also perform a builder function. Other polymeric materials suitable for use as thickeners, viscosity control and / or dispersants include polymers of castor oil derivatives; polyurethane derivatives, and polyethylene glycol. If used, optional thickeners, viscosity control agents and / or dispersants should be present in the compositions of this invention to the extent of from about 0.1% to 4% by weight. More preferably, said materials may comprise from about 0.1% to 2% by weight of the detergent compositions of the present invention. (g) Clay dirt removal / anti-redeposition agents. The compositions of the present invention may also optionally contain water-soluble ethoxylated amines having removal from k? i.y. * í * t ~ k .s, * Ááa * "? i clay dirt and anti-redeposition properties. If used, the dirt materials may contain from about 0.01% to about 5% by weight of the compositions in the present invention. The most preferred soil release and antiredeposition agent is tetraethylenepentamine ethoxylated. Exemplary ethoxylated amines are further described in U.S. Patent 4,597,898 VanderMeer, issued July 1, 1986. Another group of clay-antiredeposition soil removal agents are the cationic compounds described in European Patent Application 111,965. Oh and Gosselink published June 27, 1984. Other clay / antiredeposition soil removal agents that may be used include the amine ethoxylated polymers described in European Patent Application 111, 984 Gosselink published June 27, 1984; the zwitterionic polymers described in European patent application 112,592 Gosselink published on July 4, 1984; and the amine oxides which are described in US Patent 4,548,744 Connor, issued October 22, 1985. Preferred clay removal compounds include quaternized ethoxylated amines. Preferred ethoxylated quaternized amine materials are selected from the group consisting of compounds having the general formula ? ? áAi i. wherein each x is independently less than about 16, preferably from about 6 to about 13, more preferably from about 6 to about 8, or wherein each x is independently greater than about 35. Suitable materials for its Use in the present invention such as those defined above, can be obtained from BASF Corporation in Germany and from Witco Chemical Company. It has been determined that the degree of ethoxylation is important for the viscosity of the final detergent compositions that are described in the present invention. Specifically, for the general structure: wherein x is less than about 13 the ethoxylated quaternized amine clay materials can be added to the present liquid heavy duty detergent compositions as liquids without causing undesired thickening at low temperatures. Similarly, when the degree of ethoxylation for the same structure is greater than about 35, this is when x is greater than about 35, these higher ethoxylated materials can be added to the formulations as stable solids without melting at high temperatures and without causing a thickening of the product at low temperature.
Of course, it will be appreciated that other types of conventional optical brighteners of other compounds may optionally be used in the present compositions to provide "glossy" benefits of fabrics, rather than a true dye transfer inhibiting effect. Said use is conventional and well known for detergent formulations. Other clay and / or antiredeposition removal agents known in the art can also be used in the compositions of the present invention. Another type of preferred antiredeposition agent includes the carboxymethyl cellulose (CMC) materials. These materials are well known in the art. (h) Liquid bleach activators The detergent compositions in the present invention may also optionally contain bleach activators which are liquid in form at room temperature and which may be added as liquids to the liquid phase of the detergent compositions in the present invention. Said liquid bleach activator is glycerol triacetate, which serves as a solvent in the composition during storage but when it is released into the wash water solution it is peroxide and functions as a bleach activator. Other examples of bleach activators include acetyltriethyl citrate (ATC) and nonanoylvaleolactam. The liquid bleach activators can be dissolved in the liquid phase of the compositions in the present invention. _.....-. *, _-. A-A -i-A..á ,. , - .. A-i -_- fc .. (i) Brighteners, dyes and / or perfumes
[0103] The detergent compositions in the present invention may also optionally contain conventional brighteners, bleach catalysts, colorants and / or perfume materials. Such brighteners, silicone oils, bleach catalysts, dyes and perfumes must of course be compatible and non-reactive with the other components of the composition in the liquid aqueous or non-aqueous medium. If present, the brighteners, colorants and / or perfumes will typically comprise from about 0.0001% to 2% by weight of the compositions herein. (i) Structure elastifying agents The liquid detergent compositions in the present invention may also contain from about 0.1% to 5%, preferably from about 0.1% to 2% by weight of a solid, finely divided particulate, which it may include silica, for example silica, titanium dioxide, insoluble carbonates, finely divided carbon, SD-3 bentone, clays or combinations of these materials. The clays are well known to those skilled in the art and are commercially available from companies such as Rheox. The fine particulate material of this type functions as an elasticizing agent of structure in the products of this invention. Said material has an average particle size which varies from about 7 to 40 nanometers, more preferably from about 7 to 15 nanometers Said material also has a specific surface area varying from around 40 to 400m2 / g. The finely divided elastifying agent can improve the shipping stability of the liquid detergent products in the present invention by increasing elasticity of the liquid phase structured with surfactant without increasing the viscosity of the product. This allows these products to withstand a high frequency vibration that can be felt during shipping without the undesirable breaking of the structure that could lead to the sedimentation of the product. In the case of titanium dioxide, the use of this material also imparts a whiteness to the suspension of the particulate material within the detergent compositions in the present invention. This effect improves the overall appearance of the product. (k) Microspheres Microspheres can be used in the present invention. Suitable microspheres can be made from one or more water insoluble materials selected from the group consisting of polymers; silica materials; ceramics and mixtures thereof. For further analysis of the microspheres, see "Microencapsulation" in Kirk-Othmer Encyclopedia of Chemical Technology, third edition, Volume 16, pages 628-651 (John Wiley &Sons, Inc., 1979), which is incorporated herein by reference. reference.
** * * * - - The polymer microspheres of the present invention are preferably made of a water-insoluble material selected from the group consisting of thermoplastics; acylonitrile, methacrylonitrile, polyacrylonitrile, polymetracrilonitrile and mixtures thereof. The silica microspheres of the present invention are preferably made from one or more silica-containing materials selected from the group consisting of glass. Borosilicate glass is the one that is particularly preferred. Commercially available microspheres are available for sale or available from Akzo-Nobel of Switzerland under the brand name EXPANCEL®; PQ Corp. Under the brand name PM 6545, PM 6550, PM 7220, PM 7228, EXTENDOSPHERES®, LUXSIL®, Q-CEL®, SPHERICEL®, and Malinckrodt and under the brand ÁLBUMES®. Examples of microspheres and the further description of liquid detergents containing microspheres can be found in the co-pending provisional patent applications of Broeckx et al, entitled "Stable Non-aqueous Liquid Detergents Comprising Low Density Particles", which have the case of P &G; No. 7417P; provisional series No. 60 / 119,555 and filed on February 10, 1999, which is incorporated in the present invention by reference. In addition to the types of microspheres that were discussed above, microspheres suitable for use in the present invention may also be made from biomaterials soluble in wash water (such as starches and proteins) that are described with Í-A -.A.-S, .... ¿¿., Tota-Í-A- greater detail in the co-pending provisional patent application of Sadlowski et al, entitled "Non-aqueous Liquid Detergents with Wash-water soluble Low Density Filler Particles ", with case number P &G No. 7707P and filed August 10, 1999, which is incorporated by reference herein. In addition, the microspheres that are used in the present invention can also be used as the core of a particle that is formed by substantially encapsulating the core with detergent components. A non-exclusive list of said components includes an inorganic organic builder material, alkalinity source material and other coating components. These coated microspheres are described with greater specificity in the co-pending provisional patent application of Aouad et al, entitled "Non-aqueous Liquid Detergents with Wash-water Soluble Low-Density Filler Particles" which has a P &G No. 7708P case, and filed on August 10, 1999, which is incorporated in the present invention by reference. Coated microspheres are also discussed in the co-pending provisional application of Sadlowski et al, Case P &G No. 7707P, which is incorporated herein. (i) Effervescent In another preferred embodiment of the present invention the tablets further comprise an effervescent.
The effervescence as defined herein means the evolution of gas bubbles from a liquid as a result of a chemical reaction between a source of soluble acid and an alkali metal carbonate, to produce gas and carbon dioxide. That is, C6H807 + 3NaHCO3 Na3C6H5O7 + 3C? 2 + 3H20 Additional examples of acid and carbonate sources and other effervescent systems can be found at: (Pharmaceutical Dosage Forms: Tablets Volume 1 page 287 to 291). An effervescent can be added to the tablet mix in addition to the detergent ingredients. The addition of this effervescent to the detergent tablet improves the disintegration time of the tablet. The amount will preferably be between 5 and 20%, and more preferably between 10 and 20% by weight of the tablet. Preferably the effervescent should be added as an agglomerated material of the different particles or as a compact, not as separate particles. Due to the gas created by the effervescence in the tablet, the tablet may have a higher DFS and still have the same disintegration time as a tablet without effervescence. When the DFS of the tablet with effervescence remains the same as without the tablet, the disintegration of the tablet with effervescence will be faster. An additional dispersion aid could be provided using compounds such as sodium acetate or urea. A list of suitable dispersion auxiliaries can also be found in (Pharmaceutical Dosage Forms: Tablets Volume 1, Second Edition, edited by HA Lieberman et al, ISBN 0-8247-8044-2.) The effervescent system may comprise an acid and a base , such as citric acid and solid bicarbonate and / or the effervescent system or may comprise an enzyme such as catalase and / or peroxidase and a source of peroxide such as hydrogen peroxide. (m) Binders The binders that do not form gelling can be integrated into the particles forming the tablet in order to also facilitate the dispersion. If binders which do not form gelling are used, such suitable binders include synthetic organic polymers such as water-soluble polyethylene glycols, polyvinyl pyrrolidones, polyacrylates and acrylate copolymers. The pharmaceutical excipients manual Pharmaceutical Excipients in the second edition has the following classification of binders: acacia, alginic acid, carbomer, sodium carboxymethylcellulose, dextrin, ethylecellulose, gelatin, gum gum, hydrogenated vegetable oil type I, hydroxyethylcellulose cellulose, hydroxyethylpropylcellulose, liquid glucose, magnesium aluminum silicate, malto dextrin, methylcellulose, polymethacrylates, povidone, sodium alginate, starch and zinc. Preferred binders also have an active cleaning function in laundry laundry solution such as cationic polymers, ie quaternary compounds of hexamethyldiamine ethoxylated, bishexamethylenetriamines, or others such as pentamines, ethoxylated polyethylene-amines, maleic acrylic polymers. The binder materials which do not form gelling are preferably sprayed and therefore have a suitable melting point at a temperature below 90 ° C, preferably below 70 ° C and still more preferably below 50 ° C in order not to damage or degrade the other active ingredients in the matrix. The most preferred nonaqueous liquid binders are (i.e., they are not in the aqueous solution) which can be sprayed in molten form. In addition, they can also be solid binders that are incorporated into the matrix by means of dry addition but which have binder properties within the tablet. The non-gelling binder materials are preferably used in an amount within the range of 0.1 to 15% of the composition, more preferably below 5% and especially is a material that is not active in laundry, below 2% in weight of the tablet. It is preferred that gelling-forming binders, such as non-ionic surfactants, be avoided in liquid or molten form. Nonionic surfactants and other gelling binders are not excluded from the compositions, but it is preferred that they be processed into detergent tablets such as components of particulate materials and not as liquids. (n) Clays The clay minerals that are used to provide the softening soils of the instant compositions can be described as expandable, three-layer clays, ie, luminosilicates and 5 magnesium silicates, which have an ion exchange capacity by at least 50 meq / 100 g of clay. The term "expandable" as used to describe clays, refers to the ability of the stratified clay structure that swells, or expands upon contact with water. The three-layer expandable clays that are used in the present invention are 10 those materials classified geologically as smectites. There are two different classes of smectite clays; first the aluminum oxide is present in the silicate crystal crosslinked material; In the second class of smectites, magnesium oxide is present in the reticulated silicate crystal material. The general formulas of these 15 smectites are AI2 (Si2?) 2 (OH) and Mg3 (S.2O5) (OH) 2 for the aluminum-magnesium oxide-type clay, respectively. It should be recognized that the hydration water scale in the above formulas may vary with the processing to which the clay is subjected. This is unrelated to the use of the smectite clays in the present invention in the fact that the characteristics Expandable hydrated clays are determined by the structure of the silicate crosslinked material. In addition, the substitution of atoms by iron and magnesium can occur within the glass crosslinked material of smectites, while metal cations such as Na +, Ca ++, as well as ^ n jm ^ g. as H + may be copresent in the water of hydration to provide an electrical neutrality. Except as hereinafter indicated, said cation substitutions are unrelated to the use of clays in the present invention since the desirable physical properties of the clays are not substantially altered thereby. The three-layer expandable aluminosilicates useful in the present invention are characterized in that there is a cross-linked dioctahedral glass material, while the expandable three-layer magnesium silicates have a cross-linked material of triooctahedric crystal. As indicated hereinbefore, the clays employed in the compositions of the invention contain cationic counterions such as protons, sodium ions, potassium ions, calcium ions, magnesium ions and the like. It is usual to distinguish between clays on the base that a cation is predominantly or exclusively absorbed, for example, a sodium clay is that in which the cation absorbed is predominantly sodium. These absorbed cations can be involved in the exchange reactions with cations present in aqueous solutions. A typical exchange reaction involving a smectite type clay is expressed with the following equation: Smectite clay (Na) + NH4OH_ smectite clay (NH4) + NaOH As in the above equilibrium reaction, an equivalent weight of ammonium ion replaces an equivalent weight of sodium, and it is customary to measure the cation exchange capacity (sometimes referred to as *? A? "base exchange capacity") in terms of milli equivalents per 100 grams of clay (meq / 100 g). The cation exchange capacity of the clays can be measured in several ways, including electrodialysis, and exchange with ammonium ion followed by the grinding of a blue methylene process, as fully established in Grimshaw, "The Chemistry and Physics of Clays ", pp. 264-265, Interscience (1971). The cation exchange capacity of a clay mineral refers to such factors as the expandable properties of the clay, the loading of the clay, which in turn is determined at least in part by the structure of the crosslinked material, and similar. The ion exchange capacity of clays varies widely on the scale of about 2 meq / 100 g. For kaolinites of approximately 150 meq / 100 g, and larger, for certain clays of the montmorillonite variety. The Hita clays have an ion exchange capacity in some way in a smaller portion of the scale, ie around 26 meq / 100 g for an average Hita clay. The Hita and Kaolinite clays with relatively low ion exchange capacities are preferably not used as clay in instant compositions. In fact, said illite and kaolinite clays constitute a major component of clay fouling, and as indicated above, are removed from the surfaces of the fabrics by means of instant compositions. However, smectites, such as nontonite have an ion exchange capacity of about 70 meq / 100 g, and montmorillonite, also has an ion exchange capacity greater than 70 meq / 100 g, . -; _-.- t. -i- -, i- ... -i. * ... and it has been found that they are useful in instant compositions as they are deposited on fabrics to provide the desired benefits of fabric softeners. According to the above, the clay minerals useful in the present invention can be characterized in that they are three-layer, expandable smectite-type clays having an ion exchange capacity of at least about 50 meq / 100 g. Although it is not intended to be limited by theory, it appears that the benefits of fabric softeners (and potentially dye scrubbers, etc., from instant compositions) are obtained in a certain way and can be attributed to the physical characteristics and exchange properties of clays that were used in them, that is, experiments have shown that clays that are not expandable such as kaolinites and ¡Hitas, which are both kinds of clay that have exchange capabilities. ions below 50 meq / 100 g, do not provide the beneficial aspects of the clays that are used in the instant compositions.The smectite clays used in the compositions herein are commercially available.These clays include, for example montmorillonite, volchonskoite, nontronite, hectorite, saponite, sauconite and vermiculite.The clays in the present invention are available Several commercial names, for example Thixogel # 1 and Gelwhite GP from Georgia Kaolin Co., Elizabeth, New Jersey; Volclay BC and Volclay # 325, from American Colloid Co., Skokie, Illinois; Black Hills Bentonite BH450, from "#" -; "," 0 International Minerals and Chemicals, and Veegum Pro and Veegum F, by RT Vanderbilt It should be recognized that such smectite-type minerals obtained under the above trademarks may comprise mixtures of the various discrete mineral entities. Said mixtures of the smectite minerals are suitable for use herein Although some of the smectite-type clays having a cation exchange capacity of at least about 50 meq / 100 g, they are useful in the present invention. , certain clays are preferred, for example, Gelwhite GP is an extremely white form of smectite clay and is therefore preferred when formulating white granular detergent compositions.Volclay BC, which is a smectite-type clay mineral contains at least 3 % iron (expressed as Fß2? 3) in the crosslinked glass material, and having a very high ion exchange capacity, is one of the most effective clays effective and effective for use in laundry compositions and are preferred from the point of view of product performance. The clay minerals suitable for use in the present invention can be selected by virtue of the fact that the smectites exhibit a true X-ray pattern 14a. This characteristic pattern, which is considered in combination with the exchange capacity measurements developed in the manner indicated above, provides a basis for selecting particular smectite-type minerals for use in the granular detergent compositions described herein. invention. The clay preferably, and mainly in the form of granules, at least with a content of 50%, (and preferably by at least 75% or at least 90%), is in the form of granules having a size of at least 100 mm up to 1800 mm, preferably up to 1180 mm, preferably 150-850 mm. Preferably, the amount of clay in the granules is at least 50%, generally at least 70% or 90%, of the weight of granules. (o) Flocculating materials Most of the polymers that form flocculation of clay, are just long-chain polymers, and copolymers derived from said monomers such as ethylene oxide, acrylamide, acrylic acid, dimethylaminoethyl methacrylate, vinyl alcohol, vinylpyrrolidone and ethyleneimine. Rubber bands, like gum paste, are also suitable. Polymers of ethylene oxide, acrylamide or acrylic acid are preferred. These polymers dramatically increase the deposition of a fabric softening clay if their molecular weights are on the scale of 100.00 to 10 million. Such polymers having a weight average molecular weight of about 150,000 to 5 million are preferred. The most preferred polymer is poly (ethylene oxide). Molecular weight distributions can be easily determined using gel permeation chromatography, against the ethylene polyoxide standards of narrower molecular weight distributions. The amount of flocculant material is preferably 0.5-10% by weight of the tablet more preferably 2 to 6%. The flocculating material preferably, and mainly is in the form of granules, at least with a content of 50% by weight (and preferably at least 75% and more preferably at least 90%) which is in the form of granules having a size of at least 100 mm to 1800 mm, preferably up to 1180 mm and more preferably 150-850 mm. Preferably, the amount of flocculating material in the granules is at least 50%, generally at least 70% or 90%, of the weight of the granules. Other components that are commonly used in detergent compositions and that can be incorporated into the detergent tablets of the present invention include chelating agents, soil release agents, soil anti-redeposition agents, dispersing agents, brighteners, suds suppressors, fabric softeners. , dye transfer inhibiting agents and perfumes. It should be noted that when a clay material is compressed prior to incorporation into a tablet or a cleaning composition, improved disintegration or dispersion is achieved. For example, tablets comprising clay that are compressed prior to incorporation into a tablet, disintegrate more rapidly than tablets comprising the same clay material that have not been compressed prior to incorporation into a tablet. Particularly, the amount of pressure that is used for the compression of the clay is of importance so that clay particles are obtained that aid the disintegration or dispersion. In addition, when the softener clays are compressed and then incorporated into cleaning compositions or tablets, not only improved disintegration or dispersion is obtained, but also a good softening quality of the fabrics. Preferably, the clay component is obtained by compression of a clay material. A preferred process comprises the steps of subjecting the clay material to a pressure of at least 100 MPa, or even at least 20 MPa or even 140 MPa. For example, this can be done by rolling or compacting a clay material, optionally together with one or more different ingredients, to form a clay tablet or sheet, preferably followed by size reduction, such as grinding, of the sheet or tablet of compressed clay, to form compressed particles of clay. The particles can also be incorporated into a tablet or cleaning composition. The methods of tablet formation and roll compaction are known in the art. For example, compression of the clay can be performed on a Lloyd 50K tablet press or with a compaction equipment by means of the Chilsonator roller, available from Fitzpatrick Company.
In order to carry out the present invention, and more easily, reference is made to the following example, which is intended to be illustrative only and is not intended to be limiting in its scope. The following examples are presented for illustrative purposes only and are not to be construed as limiting the scope of the appended claims in any way.
Abbreviations used in the examples In the detergent compositions, the identifications of the abbreviated component have the following meanings: Sodium C11-13 linear alkyl acylbenzene sulphate C45AS Sodium alkyl sulfate C14-C15 C45E3S C14-C15 sodium alkylsulfate condensed with 3 moles of ethylene oxide QAS R2.N + (CH3) 2 (C2H4OH) with R2 = C12-C14 Linear sodium alkylcarboxylate soap derived from an 80/20 mixture of tallow acids and coconut fatty acid Zeolite A Hydrated sodium aluminosilicate of formula Na12 (A1O2SiO2) 12.27H2O having a primary particle size on the scale of 0.1 to 10 micrometers (weight expressed on anhydride basis) NaSKS-6 Crystalline layered silicate of the formula d-Na2Si2O5 Citric acid Anhydrous citric acid Carbonate Anhydrous sodium carbonate with a particle size between 200μm and 900μm Bicarbonate Anhydrous sodium bicarbonate with a particle size distribution between 400μm and 1200μm Silicate Amorphous sodium silicate (SiO2: Na2O = 2.0: 1) Sulfate Anhydrous sodium sulfate Magnesium sulfate sulfate Anhydrous magnesium Citrate Dihydrate trisodium citrate activity 86.4% with a particle size distribution between 425μm and 850μm .. AtA * MA / AA Copolymer of maleic acid / acrylic 1: 4, average molecular weight of about 70,000 AA Polymer of sodium polyacrylate of average molecular weight 4,500 CMC Carboxymethylcellulose Sodium Protease A proteolytic enzyme with 4% by weight of active enzyme, as described in WO 95/10591, sold by Genencor Int. Inc. Cellulose Cellulite enzyme, with an average of 0.23% by weight of active enzyme, sold by NOVO Industries A / S under the trade name Carezima Amylase Amyloid Enzyme, with 1 6% by weight of active enzyme, which is sold by NOVO Industries A / S under the trade name Termamil 120T Lipase Lipolytic Enzyme, with 2.0% by weight of active enzyme, which is sold by NOVO Industries A / S under the trade name Lipolase Perborate Sodium perborate Percarbonate Sodium percarbonate NOBS Sulfonate of nonanoyloxybenzene in the form of sodium salt NAC-OBS (6-nonamidocaproyl) oxybenzenesulfonate TAED Tetraacetylethylenediamine DTPA Diethylenetriaminepentaacetic acid EDDS Ethylenediamine-N, N acid '-disuccinic, isomer (S, S) in the form of its sodium salt Photoactivation Eftalocyanin zinc sulphated encapsulated in soluble polymer of dextrin bleach (1) CHDM 1,4 cyclonexanDimethanol Brilliant Disulfonate 4,4'-bs (4-) anilino-6-morpholino-1,3,4-triazin-2-yl) amino) stilbene-2: 2'-disodium HEDP 1,1-Hydroxy-tandiphosphonic acid PEGx Polyethylene glycol, with a molecular weight of x (typically 4000) QEA Bis (( C2H5O) (C2H4O) n) (CH3) -N + -C6H12-N + - (CH3) bis ((C2H5O) - (C2H4O)) n, where n = from 20 to 30 SRP Short block polymer of (1, 2) -propylenteraphthalate) polydiethoxylated Silicone Polydimethylsiloxane foam which is controller with silox copolymer an-antifoam: oxyalkylene as a dispersing agent with a ratio of said foam controller for said dispersing agent from 10: 1 to 100: 1 In the following examples, all levels are quoted as% by weight of the composition: EXAMPLES OF LIQUID PRODUCT FORMULATION EXAMPLE 1 The non-aqueous liquid detergent compositions comprise a liquid phase rich in surfactant and a solid phase which were prepared according to the following:% by weight Composition A Composition B Nonionic surfactant 21.27 20.14 Solvent BPP 18.30 17.33 Surfactant LAS 15.83 14.99 Amine clay material 1.29 1.22 quaternized ethoxylated Hdrotrope 4.80 0.00 Sodium citrate dihydrate 6.73 6.37 Sodium carbonate 9.89 9.37 Bleach activator 5.94 5.62 Sodium perborate 11.87 11.24 EDDS 1.17 1.11 Enzyme duramil 0.79 0.87 Enzyme carezime 0.03 0.03 Protease enzyme 0.79 0.75 Anti-formation agents 0.61 0.85 foam Plastic microspheres 0.51 0.49 Titanium dioxide 0.50 0.47 Brightener 0.20 0.19 PEG 8000 0.40 0.38 Perfume 1.72 1.63 Various ingredients 2.16 2.15 The liquid detergent composition A is prepared according to the present invention and therefore contains the preferred hydrotrope 1,4-cyclohexanedimethanol. As can be seen from the foregoing, the liquid detergent composition B is almost identical to the composition A, except that the composition B does not contain any of the hydrotropes and its other components have been slightly rebalanced. The benefits of the hydrotropes that are discussed herein can be readily appreciated by means of an experimental test that measures the rate of dissolution of a liquid detergent composition in water.
Speed of dissolution of the detergent product in the water test. 1.- Fill a glass flask with 3 liters of deionized water at approximately 25 ° C. 2.- Insert a 5 cm magnetic stirring bar and a conductivity electrode into the water. Start mixing the water speed at a speed of 400 rpm and keep this speed constant throughout the experiment. 3.- Place a filter of 85 milliliters of capacity with a sieve of 60 mesh on the surface of the water and in the center of the agitator so that the upper part of the filter is just above the water and can not enter water from the top, only through the screen. i -iA A .--- J .t.t? áj .L.y -.3-, 4.- Carefully add one milliliter of the liquid detergent product (with a syringe) in the middle part of the sieve filter. This is a measure of the T0 of the conductivity at T0. 5.- Repeat the measurement of the electrical conductivity of the product-water mixture of detergent at regular intervals, just after 0.5, 1, 2, 4, 6 and 10 minutes. 6.- After a reasonable time (for example 10 minutes) the liquid detergent product that is kept inside the filter is added to the product-water mixture by immersing the filter inside the mixture and increasing the speed of agitation. 7.- When all the product has dissolved and the conductivity has reached a stable-state value, said value is recorded. Both compositions were tested using the "rate of dissolution of liquid detergent product in the water test" which is described in greater detail above. The conductivity was measured by immersing the electrode in the water at the beginning of the solution of detergent composition to be approved and the dissolution percentage and it became: the obtained results: After 11 minutes, the total dissolution of the detergent composition was forced by high agitation and the conductivity was measured: The dissolution values were obtained by dividing the conductivity measured in each individual interval, by means of the conductivity measured with the total solution and multiplying it by 100.
EXAMPLE II The aqueous liquid detergent composition according to the present invention is prepared according to the following: Composition C Component% by weight C12-C-15 alkyl sulfate ether (2.5) 18.0 Ci2-C-? 3 alkylotoxylate (9.0) 2.00 C12-14 amide glucose 3.50 Citric acid 3.00 C12-14 fatty acid 2.00 CHDM 5.00 MEA at 8 pH Ethanol 3.0 Propandiol 6.0 Coloring, perfume, brighteners, enzymes, preservatives, soaps, suppressants, other minor ingredients, water Rest 100% EXAMPLE III The non-aqueous liquid detergent compositions comprising a liquid phase rich in surfactant and a solid phase were prepared according to the following: ».-. , .., -. ,. -. . -j-% by weight Composition A Composition B Composition C Composition D C iposity NaLAS 14.6 14.9 13.9 13.0 14.9 HLAS 0.0 0.0 1.0 1.9 0.0 Non-ionic surfactant 20.6 20.7 20.7 20.7 20.7 Citrate Dihydrate 3.3 3.3 3.3 3.3 3.3 Acrylic acid copolymer 2.9 2.9 2.9 2.9 2.9 and maleic acid EDDS 1.2 1 .2 1.2 1.2 1.2 Material of amide clay 1 .3 1 .3 1.2 1.3 1.3 ethoxylated and quaternized Sodium perborate 1 1.5 1 1.5 1 1.5 1 1 .5 1 1.5 Bleach activator 2.9 5.8 2.9 2.9 2.9 Triacetin 12.5 0.0 12.5 12.5 8.7 Sodium carbonate 9.6 9.6 9.6 9.6 9.6 Solvent BPP 9.1 17.8 9.1 9.1 12.0 Hydrotrope 3.8 4.8 3.8 3.8 4.8 Acetic acid 0.2 0.0 0.1 0.0 0.0 Protease enzyme 0.8 0.8 0.8 0.8 0.8 Enzyme Duramil 0.8 0.4 0.4 0.4 0.4 Mannase enzyme 0.2 0.2 0.2 0.2 0.2 Enzyme Carezyme 0.1 0.0 0.0 0.0 0.0 Brightener 0.2 0.2 0.2 0.2 0.2 Titanium dioxide 0.5 0.5 0.5 0.5 0.5 PEG 8000 0.5 0.5 0.5 0.5 0.5 Perfume 1.7 1.7 0.7 07 0.7 Silicone 0.7 0.7 0.3 0.3 0.3 Surfactant of 0.3 0.3 0.3 0.3 0.3 silicone DC 3225 Sodium salt of one acid 0.5 0.5 0.5 0.5 0.5 Hydrogenated fatty acid of C16-18 Other Rest Rest Rest Rest Rest - A * M.á EXAMPLES OF FORMULATION OF THE GRANULATED / POWDERED PRODUCT EXAMPLE I The following compositions are according to the invention: 10 15 20 The compositions that are exemplified above, have at least 90% by weight of particles having a mean or geometric particle diameter of about 850 microns with a geometric standard deviation of about 1.2. Unexpectedly, the compositions have 5 improved aesthetics, fluidity and solubility.
EXAMPLES OF PRODUCT FORMULATION IN TABLET EXAMPLE 1a 10 i) A detergent base powder of composition A was prepared (see Table 1) all the base composition particle materials A were mixed in a mixing drum to form a homogeneous particle mixture. Ii) One part of polyethylene glycol was sprinkled over 99 parts of base powder of composition A while mixing. iii) The tablets were subsequently made in the following manner: 54 grams of the mixture were added in a circular mold with a diameter of 5.5 cm and compressed to a force of 2.0 kN with a 20 Instron 4464 press. The tensile strength of the tablet (or diameter fracture stress) obtained with this force was 19.2 kPa. The means for evaluating tablet resistance (which is also referred to as the diameter-to-fracture stress) in dosage forms are provided.
Pharmaceutical: volume of tablets 1 Ed. H.A. Lieberman et al, published in 1989.
EXAMPLE 1 b i) The same composition A was prepared after the same procedure as in example 1a. ii) 0.9 parts of polyethylene glycol and 0.1 part of 1,4-cyclohexanedimethanol were mixed together and sprayed on 99 parts of base powder of composition A while mixing. iii) Tablets were then prepared following the same form as described in example 1a. The tensile strength of the tablet (or diameter fracture strain) has obtained a force of 2.0 kN was 23.6 kPa. Examples 2a-2b were prepared analogously to the procedure described above according to the compositions of the formulation detailed below. x ^^^^ s -f - * - ** > - * - t TABLE 1 1. The anionic agglomerates comprise 37% anionic surfactant, 2% cationic surfactant, 22% layered silicate, 10% acetate, 6% carbonate and 23% Zeolite. 2. The nonionic agglomerates comprise 24% nonionic surfactant, 6% hexamethylene ethoxylated diamine diamine, 40% acetate / zeolite mixture, 20% carbonate and 10% zeolite. 3. The layered silicate comprises 95% SKS and 5% silicate.
... »? A ..- riiLt4-. | L¡? > . ÍM --.- j 4. Agglomerated bleach activator materials comprise 81% TAED, 17% acrylic / maleic copolymer (acid form) 22% water. 5. Sodium salt of ethylene diamine N, N-disucciinic acid / sulphate particle comprising 58% sodium salt of ethylenediamine N, N, -disuccinic acid, 23% sulphate and 19% water. 6. Encapsulated materials of zinc etalocyanine sulfonate that are 10% active. 7. Foam suppressor comprising 11.5% silicone oil (formerly Dow Corning), 59% zeolite and 29.5% water. 8. Sodium salt of linear alkylenebenzenesulfonate / diisopropylbenzenesulfonate comprising 67% linear alkylbenzenesulfonate and 33% diisopropylbenzenesulfonate. A tablet binder composition was sprayed onto the detergent base powders according to the following compositions: TABLE 2 The resistance test of the tablets was then subjected as described above in step iii) and in other sites of the present invention: TABLE 3 The tensile strength of the tablet, whose samples contained a higher CHDM value than the CHDM tablet samples of a composition virtually identical but not containing CHDM. The operative window of: TABLE 4 15 The operating window of the tablet samples containing CHDM (width equal to 25 g / liter) was wider than the operational window of 20 the samples of the tablets that did not contain CHDM (width equal to 17 g / liter). The supply amount of a detergent tablet as indicated above in Table 4, can be determined by means of a test Experimental test that measures the amount of detergent product supplied during an automatic washing procedure as follows: 1. Two tablets, mainly 50 grams each, are weighed, and placed in the dispenser of a Baucknecht® washing machine 5 WA9850. The water supply for the washing machine is set at a temperature of 20 ° C and a hardness of 21 grains per gallon, water from the dispenser, whose flow rate of input is set to 81 / minutes. 2. The level of tablet waste left in the dispenser is verified by switching the wash machine switch to a 10 wash cycle for washing program 4 (blanks, colors, waste cycle). 3. The residual percentage of supply is determined according to the following:% of supply = weight of residue X 100 / original weight of the tablet The residue level is determined by repeating the procedure 10 15 times and the average residue level is calculated based on the 10 individual measurements. Having described the invention in detail, it will be clearer to those skilled in the art that various changes may be enhanced without departing from the scope of the invention and the invention is not considered to be limited to what is described in the detailed description. titiW MMiiifiirf 1 '- t irtrtoH. tt- »TH ?.

Claims (17)

NOVELTY OF THE INVENTION CLAIMS
1. A laundry detergent composition comprising a hydrotrope, wherein the hydrotrope contains a first polar group and a second polar group separated from each other by at least 5 aliphatic carbon atoms.
2. The detergent composition for laundry according to claim 1, further characterized in that the composition is in the form of a liquid, non-aqueous liquid, or aqueous liquid, preferably comprises a surfactant in a sufficient concentration for the agent The surfactant forms a viscous phase with the dilution in water in the absence of the hydrotrope, more preferably it is characterized in that the non-quaternary compounds are derivatives of any of the following: unsaturated fatty acids of C-? 6-i8. metildietalonamina or methyl chloride.
3. The detergent composition for laundry according to claims 1-2, further characterized in that the first polar group is a hydroxyl group, -OH, preferably wherein the first polar group and the second polar group are both hydroxyl groups.
4. The detergent composition for laundry according to claims 1-3, further characterized in that the polar groups are separated by 6 aliphatic carbon atoms, preferably the polar groups are separated by no more than 8 aliphatic carbon atoms, with more preferred the polar groups are separated with no more than 10 aliphatic carbon atoms.
5. The laundry detergent composition according to claims 1-4, further characterized in that the hydrotrope is selected from the group consisting of: (a) 1,4-cylcohexanedimethanol: (b) 1.6 hexandiol: (c) 1,7 heptanediol ; Y (d) mixtures thereof.
6. The detergent composition for laundry according to claims 1-5, wherein the detergent composition is further characterized by an ingredient of the group consisting of: nonionic surfactants, which are organic additives selected from the group l - ..M.? ? , i ** »~ .- t- z. And - which consists of glyceroltriacetate, acetyltriethyl citrate or mixtures thereof, enzymes, quaternized ethoxylated amine materials, and mixtures thereof.
7. The detergent composition for laundry according to claims 1-6, characterized in that the composition is a non-aqueous composition and further characterized in that: A) from 49% to 99.95% by weight of the composition of a non-aqueous liquid phase contains a surfactant; and B) from 1% to 50% by weight of the composition of a particulate material which is substantially insoluble in said liquid phase and which is characterized by materials selected from the group consisting of peroxygen bleaching agents, bleach activator, organic detergency, inorganic alkalinity sources, enzymes, brighteners, polymers and mixtures thereof; C) a hydrotrope according to any of claims 1 and 3-5.
8. The non-aqueous liquid laundry detergent composition according to claims 1-7, further characterized in that the detergent composition includes from 0.01% to 10% of a fabric care agent.
9. The non-aqueous liquid laundry detergent composition according to claims 1-8, further characterized in that the non-aqueous liquid phase containing surfactant has a density of 0.6 to 1.4 g / cc.
10. - The non-aqueous liquid laundry detergent composition according to claims 1-9, further characterized in that the particulate material has a particle size of 0.1 to 1500 microns.
11. The non-aqueous liquid laundry detergent composition according to claims 1-10, further characterized in that additionally the microspheres having an average particle size of about 10 μm to 150 μm.
12. The non-aqueous liquid laundry detergent composition according to claims 1-11, further characterized in that the microspheres have an average density of about 0.1 g / ml to 1.8 g / ml.
13. A method for washing soiled fabrics, according to any of claims 1-12, further characterized by the steps of contacting said fabric in an aqueous laundry solution with a prepared non-aqueous liquid detergent composition.
14. The method for washing dirty fabrics according to claims 1-13, further characterized by the steps of contacting said fabrics in a solution prepared for laundry.
15. A laundry detergent composition according to any of claims 1-14, wherein the composition is in granular form, preferably wherein the laundry detergent composition granulated is characterized in that: i) i ** / tj ,? *? * t ti *. Í JaÍL? .l * -. ., - t.AÍz. . .. - - »• * - -tl lirlIMU if- - * - < «» - »-" "- - ...- *. . A.A *, and. ^^. i. L ..., from 0.01% to 3% by weight of a hydrotrope characterized in that the binder comprises an organic molecule having a first polar group and a second polar group separated from each other by at least 5 aliphatic carbon atoms , ii) the rest comprise detergent adjunct ingredients.
16. The laundry detergent composition according to any of claims 1-15, wherein the composition is in tablet form, preferably wherein the tablet detergent composition is characterized by a binding agent, which in turn is characterized by a hydrotrope having a first polar group and a second polar group separated from each other by at least 5 aliphatic carbon atoms, more preferably wherein the binder additionally does not form gel, more preferably wherein the binder which does not form gel is a polyethylene glycol having a molecular weight of about 1000 to 4000, preferably wherein the ratio of the binder that does not form gel to hydrotrope is from 2: 1 to 60: 1, preferably 3: 1 at 30: 1, more preferably from 3: 1 to 15: 1.
17. A detergent tablet according to claim 16, further characterized in that the operative window of the detergent tablet is wider with the hydrotrope.
MXPA02001523A 1999-08-10 2000-08-08 Detergent compositions comprising hydrotropes. MXPA02001523A (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US14805699P 1999-08-10 1999-08-10
US15023399P 1999-08-23 1999-08-23
US15634099P 1999-09-27 1999-09-27
US15633999P 1999-09-27 1999-09-27
US18812300P 2000-03-09 2000-03-09
PCT/US2000/021570 WO2001010993A1 (en) 1999-08-10 2000-08-08 Detergent compositions comprising hydrotropes

Publications (1)

Publication Number Publication Date
MXPA02001523A true MXPA02001523A (en) 2002-07-02

Family

ID=27538316

Family Applications (1)

Application Number Title Priority Date Filing Date
MXPA02001523A MXPA02001523A (en) 1999-08-10 2000-08-08 Detergent compositions comprising hydrotropes.

Country Status (11)

Country Link
EP (3) EP1785479A1 (en)
JP (1) JP2003506560A (en)
CN (1) CN100422299C (en)
AT (1) ATE401386T1 (en)
AU (1) AU6528000A (en)
BR (1) BR0013080A (en)
CA (1) CA2380328C (en)
DE (1) DE60039518D1 (en)
ES (1) ES2308988T3 (en)
MX (1) MXPA02001523A (en)
WO (1) WO2001010993A1 (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1299511B1 (en) * 2000-07-13 2008-05-14 The Procter & Gamble Company Granular detergent composition having an improved solubility
US6589931B2 (en) 2000-07-13 2003-07-08 The Procter & Gamble Company Granular detergent composition having an improved solubility
GB2367830A (en) 2000-10-12 2002-04-17 Procter & Gamble Process for preparing tablets
WO2002077144A2 (en) * 2001-03-21 2002-10-03 The Procter & Gamble Company Hand dishwashing composition
EP1370636A1 (en) 2001-03-21 2003-12-17 The Procter & Gamble Company Hand dishwashing composition
EP1260578A1 (en) * 2001-05-22 2002-11-27 The Procter & Gamble Company Pouched compositions
JP2005501929A (en) * 2001-06-01 2005-01-20 ジェネンコー・インターナショナル・インク Method and formulation for increasing the solubility of solids in liquids
WO2003062360A1 (en) * 2002-01-23 2003-07-31 The Procter & Gamble Company Improved solubility aids for use in detergent compositions
ATE526390T1 (en) * 2002-08-13 2011-10-15 Rhodia Operations HIGHLY CONCENTRATED SURFACTANT COMPOSITIONS AND METHODS
FR2936812B1 (en) 2008-10-03 2010-10-15 Total France LUBRICATING COMPOSITIONS FOR TRANSMISSIONS.
JP6220652B2 (en) * 2013-11-26 2017-10-25 日華化学株式会社 Cleaning composition for medical equipment
SG11201604459SA (en) * 2013-12-06 2016-07-28 Lion Corp Liquid detergent
DE102015213943A1 (en) 2015-07-23 2017-01-26 Henkel Ag & Co. Kgaa Washing or cleaning agent comprising at least two phases
AU2017335819B2 (en) 2016-09-29 2021-10-21 Ecolab Usa Inc. Paraffin suppressant compositions and methods
US10738138B2 (en) 2016-09-29 2020-08-11 Ecolab Usa Inc. Paraffin inhibitors, and paraffin suppressant compositions and methods
CN111511890B (en) * 2018-01-26 2022-03-04 宝洁公司 Detergent particles with high anionic surfactant content
CN110924175A (en) * 2019-12-13 2020-03-27 广州立白企业集团有限公司 Fabric care tablet
JP7449125B2 (en) 2020-03-09 2024-03-13 花王株式会社 Cleaning composition for textile products
WO2022128369A1 (en) * 2020-12-14 2022-06-23 Unilever Ip Holdings B.V. Composition

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3331780A (en) * 1963-11-26 1967-07-18 Fmc Corp Detergent tablets and method of producing same
US4206069A (en) * 1976-04-22 1980-06-03 Colgate-Palmolive Company Transparent detergent pellets
US4873012A (en) * 1986-10-29 1989-10-10 Colgate-Palmolive Company Built nonaqueous liquid nonioinic laundry detergent composition containing hexylene glycol and method of use
JPH07116479B2 (en) * 1987-02-20 1995-12-13 日本曹達株式会社 Urine stone removal method
DE69632129D1 (en) * 1995-04-27 2004-05-13 Goldschmidt Chemical Corp COMPOSITIONS CONTAINING DIOL
WO1997000938A1 (en) * 1995-06-20 1997-01-09 The Procter & Gamble Company Nonaqueous, particulate-containing liquid detergent compositions with alkyl benzene sulfonate surfactant
AU7578198A (en) * 1997-05-19 1998-12-11 Procter & Gamble Company, The Clear or translucent fabric softener compositions using mixture of solvents
JP3290382B2 (en) * 1997-07-18 2002-06-10 花王株式会社 Powder detergent composition
JP2001508119A (en) * 1998-01-13 2001-06-19 ザ、プロクター、エンド、ギャンブル、カンパニー Granular composition showing improved solubility
EP0971029B1 (en) * 1998-07-10 2005-02-16 The Procter & Gamble Company Detergent tablet with high mechanical and dissolution characteristics

Also Published As

Publication number Publication date
CN1370220A (en) 2002-09-18
ES2308988T3 (en) 2008-12-16
EP1754775A2 (en) 2007-02-21
DE60039518D1 (en) 2008-08-28
CA2380328A1 (en) 2001-02-15
WO2001010993A1 (en) 2001-02-15
ATE401386T1 (en) 2008-08-15
CA2380328C (en) 2009-10-06
EP1203066B1 (en) 2008-07-16
EP1785479A1 (en) 2007-05-16
EP1203066A1 (en) 2002-05-08
EP1754775A3 (en) 2007-03-28
BR0013080A (en) 2002-04-23
CN100422299C (en) 2008-10-01
JP2003506560A (en) 2003-02-18
AU6528000A (en) 2001-03-05

Similar Documents

Publication Publication Date Title
CA2380328C (en) Detergent compositions comprising hydrotropes
US6949496B1 (en) Detergent compositions comprising hydrotropes
US6503876B1 (en) Stable non-aqueous liquid laundry detergents comprising low density particles
JP2002536537A (en) Low density granular solids useful in laundry detergents
US6015784A (en) Secondary alkyl sulfate particles with improved solubility by compaction/coating process
EP1201741A1 (en) Detergent compositions
CA2370700A1 (en) Aqueous liquid detergent compositions comprising an effervescent system
US5919747A (en) Preparation of secondary alkyl sulfate particles with improved solubility
JP2001526307A (en) Non-aqueous liquid detergent compositions containing ethoxylated quaternized amine clay compounds
EP1201743A1 (en) Detergent compositions
US6656899B1 (en) Nonaqueous liquid detergent with wash-water soluble low-density filler particles
US5955418A (en) Secondary alkyl sulfate surfactant with improved solubility by kneading/extruding process
EP1201742A1 (en) Detergent compositions
JPH08509012A (en) Secondary (2,3) alkyl sulphate surfactants in stable enzyme-containing detergent compositions
EP1754774B1 (en) Detergent compositions comprising hydrotropes
US6770615B1 (en) Non-aqueous liquid detergents with water-soluble low-density particles
CA2381896A1 (en) Aqueous liquid detergent compositions comprising a polymeric stabilization system
WO2000066704A1 (en) Microspheres useful in detergent compositions
EP1149145A1 (en) Low density enzyme granulates and compositions employing same
MXPA01007838A (en) Low density enzyme granulates and compositions employing same
MXPA01008079A (en) Stable non-aqueous liquid laundry detergents comprising low density particles
MXPA01008081A (en) Low density particulate solids useful in laundry detergents
MXPA98007343A (en) Secondary alkylsulphate surgical agent with improved solubility through an amased / extruated procedure

Legal Events

Date Code Title Description
FG Grant or registration