Classifications

• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/38—Products with no well-defined composition, e.g. natural products

Definitions

• This application relates to laundry compositions.
• This application relates to the use of oxidized humic acid, its salts its derivatives and mixtures thereof in laundry compositions.
• This application relates to the laundry compositions ,whereas oxidized humic ,its salts its derivatives and mixtures thereof is added to the laundry composition in situ after synthesis or after separation of oxidized humic acid from reaction mixture.
• This application relates to the synthesis of oxidized humic acid which is compatible for the use in laundry compositions.
• oxidized humic acid oxidized humic acid , its salts, its derivatives and mixtures thereof.
• Detergents are surfactants with cleaning properties in dilute solutions.
• Detergents are ions or molecules that contain both polar and nonpolar components. The polar end allows the detergent to dissolve in the water, whereas the nonpolar end solubilizes hydrophobic materials which are main target of the cleaning process.
• Surfactant is the most important part of any cleaning composition. In general they are chemicals that, when dissolved in water or another solvent they orient themselves at the boundary between the liquid and a solid. Long nonpolar chain part of the surfactant molecule is attracted to oil, grease and dirt which are hydrophobic nature and another part of the molecule is attracted to water. Surfactant surround dirt until it is dislodged from the boundary.
• chelating agents used in cleaning compositions are phosphates, ethylene diamine tetra acetic acid (EDTA),its alkaline metal salts, citrate salts and zeolit.
• phosphates are about to be banned due to environmental concerns.
• Zeolit and citrate are not strong enough complexating agent and are used in excess amounts.
• EDTA have been developed as phosphate substitue. However its high price and limitation due to health concerns raise question of their replacement. Builders are often a good alternatives to said complexation agents.
• Builders are added to a cleaning composition to enhance efficiency of surfactants. They have a number of functions including softening, buffering, emulsifying and removing multivalent cations from water. Builders provide a desirable level of alkalinity which aids in cleaning. Builders help emulsify oily or greasy soil by breaking them up to tiny globules and keep them from settling back on the cleaned surface.
• Humic acid is a principal component of humic substances, which are the major organic constituents of soil, peat and coal. It is produced by biodegradation of dead organic matter. It is not a single acid; rather, it is a complex mixture of many different acids containing carboxyl and phenolate groups, so that the mixture behaves dibasic or tribasic functionally.
• a typical humic substance is a mixture of many molecules having aromatic, phenolic, carboxylic substituents linked together.
• humic acid having a variety of components including phenol, quinone, catechol and sugar moieties:
• Oxidized humic acid which is the subject matter of the present invention has differencies as some bonds are disrupted and some functionalities are oxidized. Oxidized humic acid has generally smaller molecular weight and increased number of hydroxy and carboxyl groups.
• Oxidized humid acid compounds are used in the technic as fertilizer, regeneration of polluted grounds, animal breeding and water regeneration mainly.
• the present invention relates to a new use of oxidized humic acid.
• the present inventor has discovered that by adding oxidized humic acid compounds to the laundry compositions foaming and cleaning capacity has increased.
• oxidized humic acid is not used in laundry compositions. There exist no commercially available laundry composition product containing oxidized humic acid on the market.
• oxidized humic acid Due to the complex mixture character of humic acid and consequently complex mixture character of oxidized humic acid in the text the synonym "oxidized humic acid” will be standing for "oxidized humic acid , its salts, its derivatives and mixtures thereof". Further the same synonym will be standing for compounds of oxidized humic acid and its salts and mixtures which is derivatized afterwards and derivatized humic acid which is oxidized afterwards and its salts and mixtures thereof.
• oxidized humic acid may be in form of its salts. Due to the presence of carboxylic acids in the structure salts may be cationic character of any type.
• humic acid The presence of carboxylate and phenolate groups give humic acid the ability to form complexes with ions such as Mg2+, Ca2+, Fe2+, Fe3+. This capability is enhanced by oxidation of humic acid.
• oxidized humic acid In the past no complex binding capability of oxidized humic acid is measured.
• the present inventor additionally measured metal ion binding capacity and found that oxidized humic acid is an excellent builder with high earth alkaline metal cation capturing capability.
• oxidized humic acids is by far superior to classic builder such as polyphosphate and even superior to the new generation builders which are of acrylic acid copolymer nature.
• Oxidized humic acid with 1350mg Ca ion binding capacity per gram has stronger complexation capability than any other commercially available builder currently as shown herewith below.
• Calcium ion binding capacity in mg with respect to per gram builder used in aqueous solutions is measured titrimetrically.
• the ideal builder should have strong earth alkaline metal cation capturing capacity, should be of organic origin and ecologically acceptable.
• the present inventor unexpectedly found that humic acid in oxidized form is an excellent builder with high earth alkaline metal cation capturing capability. Furthermore oxidized humic acid has not such ecologically nature originated drawbacks since it is of organic origin and decompose naturally in the natural environment.
• Oxidized humic acid serve due to its complex organic structure as emulsifying agent, as a base for buffering purposes and furthermore as complexation agent. All these properties summed establish oxidized humic acid as a good builder.
• compositions disclosed in the present invention have improved foaming thus cleaning properties due to high builder capabilities of oxidized humic acid used.
• Builders in detergent industry are compounds capable of capturing earth alkaline metal cations which are specific for the hardness of water. Surfactants which are the main component of cleaners cannot reveal their full cleaning capabilities in presence of those cations. Oxidized humic acid is more prone to capture Mg2+ and Ca2+ cations than commercially already used builders. It is a good working, organic, with less ecological concern builder compound thus superior to already existing builders.
• Humic acid is originated from wood decomposition products. It is a renewable source and existing in large scale. Considering additionally its organic nature humic acid is an ideal compound as builder from economical and environmental aspect both.
• carboxylate and phenolate groups give humic acid the ability to form complexes with ions such as Mg2+, Ca2+, Fe2+, Fe3+.
• oxidized humic acid is superior to the humic acid as builder.
• the present inventor assume that additional oxidized phenol and carboxylate groups formed during oxidation procedure enhance the complexation capability. Measurements of the present inventor reveal that humic acid in oxidized form has higher earth alkaline metal cation complexation capability hence is a better builder. In comparative washing tests achieved results support this fact as well. With oxidized humic acid replaced cleaning compositions are at least as good as classic builder containing laundry compositions regarding cleaning capabilities. We assume that oxidized humic acid has relatively more phenolate, carboxylate groups which are participating by complexation process.
• Humic acid is a deep black colored substance due to high content of pigments which makes it non desirable to use in cleaning compositions. This fact may be the reason for not using humic acid and staying away from its derivatives in field of cleaning compositions. Applying excess amount of oxidizing agent by synthesis of oxidized humic acid convert much of the pigments to noncolored substances. Oxidized humic acid obtained as such is light colored enough to be able to used for cleaning purposes. This color issue is an additional reason beside having higher complexation capacity for giving preference to oxidized humic acid and not to humic acid in the present invention.
• Builders are compounds having the capability to capture the multivalent metal cations from water and remove them from the cleaning or washing medium. In the absence of these cations ,surfactants, which are the main active washing agents, are not captured from these cations and can reveal their complete washing strength.
• Builders have multiple anionic functional groups which are capable to bind by complexation earth alkaline metal cations.
• First commercially used builders were polyphosphates which are stil in use. They were able to capture multivalent metal cations and remove it from the medium by precipitating, since phosphate salts of these metal cations are less soluble in water. But due to environmental concerns related to overfertilizing water with phosphate and consuming of oxygen by water plants, which affect the life in water, polyphosphate builder are needed to be replaced with alternative builders. Existing alternatives are of polyacrylate nature which are again suspect of being hazardous due to their synthetic nature. Especially unreacted monomer residues remaining in polymers are main concern .
• a laundry composition comprising oxidized humic acid, its salts and derivatives and their mixtures.
• Oxidized humic acid used in laundry compositions in the present invention are stable in nature. They maintain their builder properties in ambient conditions for a long time and at considerable harsh conditions for reasonable time period in comparison to the existing commercially available cleaning products. Oxidized humic acid containing laundry compositions have same performance, durability, foaming capacity, cleaning capacity and stability compared to the equivalents in the marketed products. The oxidized humic acid containing compositions of the present invention are equal or superior to the commercially available laundry composition products.
• oxidized humic acid amounts by weight are by far less than the existing commercially available composition products due to superior builder capacity. This makes its use more economical and with less environmental concern. Due to its stable nature oxidized humic acid can be used in liquid laundry compositions of the present invention as well and last without degradation or negative effects for adequate time period.
• oxidized humic acid is used in compositions for cleaning fabrics, clothes, carpets, woven or nonwoven type of textile any art.
• Oxidized humic acid of the present invention is used in laundry compositions in liquid, solid and semisolid state as well.
• the application forms are including cream, gel, lotion, solution, colloid ,suspension, powder, granul, tablet, pouch and capsul among others.
• Pouch and tablet forms may include multicompartments comprising liquid, solid or gel forms.
• Oxidized humic acid of the present invention may be prepared from humic acid or humic acid containing mixtures like lignite, peat, coal and the like by addition of oxidizing agent.
• Particularly oxidized humic acid of the present invention is prepared starting from humic acid or humic acid source in a solvent in the presence of hydrogen peroxide.
• Oxidized humic acid FTIR spectrums reveal in comparison to humic acid increased number of aliphatic hydrogen, phenolic groups and carbonyl moieties at respective wavelengths. This is indicating the cleavage and oxidation of bonds of humic acid and increase in carboxylic acid groups content.
• oxidized humic acid is typically used in the form of aqueous solutions. As such it can be added to the liquid compositions directly from synthesis mixture without any treatment. As such oxidized humic acid containing reaction mixtures can be added directly to solid compositions for granulating purposes to obtain solid compositions.
• said oxidized humic acid is used in solid form such as powder or granule.
• solid oxidized humic acid can be prepared from synthesis reaction mixture by removing solvent without any other separation of the reaction byproducts and reactants.
• Solid oxidized humic acid obtained that manner are used in solid laundry compositions or in liquid laundry compositions by dissolving in it.
• Oxidized humic acid of the present invention can be used in laundry compositions after separation from the synthesis reaction mixture.
• Oxidized humic acid of the present invention added to the laundry compositions as reaction mixture in situ after the synthesis reaction are of the same or very similar performance with regard to complex binding capacity compared to separated oxidized humic acid.
• Such compositions has no drawbacks with potential hydrogen peroxide residues. It is assumed that during the oxidation reaction all hydrogen peroxide is consumed and converted to percarboxylic acid residues of the oxidized humic acid compounds. Remaining hydrogen peroxide is decomposed. As such this way of introduction of oxidized humic acid is convenient, feasable and economically advantageous.
• Both in application in liquid form laundry compositions and solid form laundry compositions Application to the liquid composition is very convenient due to being same physical state. Application to the solid composition is advantageously as being granulation solvent as well.
• Solid nonseparated oxidized humic acid to the solid composition is of convenient being the same physical state.
• Solid form oxidized humic acid is advantageous with respect of storage and handling.
• Separated form oxidized humic acid may be advantageous with respect of especially storage potential.
• laundry compositions of the present invention are prepared by combining the ingredients with water to provide liquid solutions.
• the components may be mixed in dry form.
• the amounts of oxidized humic acid used in the laundry compositions according to the present invention may be varied depending on the use purpose and desired concentrations.
• Oxidized humic acid used in the present invention compositions found to be effective starting from the concentration of 0.01 % of weight. Beyond 15 % of weight no additional effectiveness is to be observed as builder.
• the amounts of oxidized humic acid used in the laundry compositions according to the present invention may be within the range of 0.01% to 15%, prefferably %0.02 to % 10, most prefferably %0.05 to % 5 of weight.
• Laundry is the process of cleaning fabric, cloth, carpet, fibre, woven or nonwoven textile of any art. This is achieved either by hand or using washing machine.
• Hand laundry detergents are usually liquid or in gel form. Washing machine detergents may be in powder, tablet, gel, liquid form. Hand laundry liquids are usually highly foaming mixture of surfactants with low skin irritation.
• Washing machine used detergents contain mainly non bubbling surfactants which may be nonionic character or low foaming type of other surfactants and water hardness remover. Too much suds will be causing the washing machine to overflow and smother the water action necessary for cleaning.
• Surfactants lower surface tension of water which has a wetting effect and helps remove soil.
• the laundry compositions of the present invention comprise surfactants and builders as the main ingredient.
• Suitable surfactants for such use may be of anionic, cationic, nonionic and amphotheric nature.
• Hand laundry compositions are mainly comprised of surfactants, stability agents, preservatives, foaming agents, foam boosting agents, skin compatibility agents..
• Stability and dispensing aids are added to keep the product homogeneous under varying storage conditions. Hydrotropes and salts are often used.
• Preservatives are added if needed in small amounts to help prevent any microbiological growth in the product.
• Hand laundry composition of the present invention comprise as ingredients beside the present invention builder oxidized humic acid, surfactants , hydrotropes, solvents, preservatives, antimicrobials, buffering agents, salts, fragrances, perfume, foam booster, enzymes, dye transfer inhibitor, redeposition inhibitor and skin compatibility agents.
• Surfactants are primary ingredients in a liquid hand laundry detergent. Often a combination of surfactants is used.
• Washing machine laundry composition of the present invention comprise as ingredients beside the present invention builder oxidized humic acid , surfactants, corrosion inhibitor, additional alkali, perfume, bleaching agents, hydrotropes, solvents, preservatives, buffering agents, salts, softening agents, foam reducing agents, opacifying agents, dye transfer inhibitor, redeposition inhibitor, enzymes, and processing aids.
• Nonionic surfactant lowers surface tension of water, act as wetness agent which makes the soil removing possible.
• Nonionic surfactant are used in washing machine compositions because they have lowest sudsing effect.
• the laundry compositions of the present invention beside the present invention builder oxidized humic acid may include additional additives known in the art such as surfactants whereas suitable surfactants for such use may be of anionic, cationic, nonionic and amphotheric nature.
• Additional ingredients are among others bleaching agents, hydrotropes, solvents, preservatives, antimicrobials, buffering agents, salts, fragrances, perfume, softening agents, foaming agent, foam reducing agent, opacifying agent, dye transfer inhibitor, redeposition inhibitor and enzymes.
• Surfactant lowers surface tension of water, act as wetness agent which makes the soil removing possible.
• Suitable surfactants for such use may be of anionic, cationic, nonionic and amphotheric nature.
• Surfactants are used in the present invention in the range of %1 to %50 varying with respect of concentration or purpose of the commpositions.
• Anionic surfactants used in the laundry compositions of the present invention comprise sulfate surfactants, linear alkylbenzene sulfonic acid, sodium lauryl ether sulfate, alpha olefin sulfonate, phosphate esters, sulfosuccinate surfactants, sodium dioctyl sulphosuccinate, sulfonate surfactants, alkyl benzene sulfonate, allylsulfate, sodium alkyl glyceryl ether sulfonate,alpha olefin sulfonate, linear alkyl benzene sulfonate, alcohol ether sulfate, dodecyl benzene sulfate, Alkyl ethoxy sulfonate, sodium lauryl ether sulfate, alkylethoxyphosphate, and mixtures thereof.
• Cationic surfactants are generally used as fabric softeners. But small amounts of addition helps removing oily stain in the present invention compositions.
• Long chain quaternary ammonium compounds, cocoalkyl trimethyl ammonium methosulfate, lauryl amido propyl trimethyl ammonium methosulfate, polyglycolether, cocoammonium methosulfate, cetyl trimethyl ammonium chloride, betaines are the compounds of choice.
• Nonionic surfactants used in the present invention are ethoxylated alcohols like linear alcohol ethoxylates,alkyl phenol ethoxylate octyl phenol ethoxylates, nonyl phenol ethoxylates, alkyl amine ethoxylate,alkyl polyglycoside like sodium gluconate, fatty alkanolamide, amine polyglycol ether, imidazolines , fatty amine oxide,.
• Amphoteric surfactants used in the laundry compositions of the present invention comprise alkyl dimethyl betaine, alkyl amidopropylbetaine and alkyl amine oxide. Specifically N,N-dimethylacetic acid betaine, alkylamidepropyl-N,Ndimethyl-2-hydroxypropylsulfobetaine and alkylamidepropyl N, N-dimethylpropylsulfobetaine.
• lauramidepropyl-N,N-dimethylacetic acid betaine myristamidepropyl-N, N-dimethylacetic acid betaine, alkylcarbobetaine, alkylsulfobetaine, alkylhydroxysulfobetaine, alkylamideamine-type betaine and alkylimidazoline-type betaine.
• Cocamidepropyl-N,N-dimethylacetic acid betaine and the like are particularly preferable in terms of detergency, foam producing ability and rinsing property.
• Bleaching agents are active oxygen bleaches. They are removing stain to improve whitening by cleavage of bonds and oxidation.
• Sodium percarbonate, sodium perborate, sodium hypochlorite among others are bleaching agents which may be used in the present invention.
• For activating bleaching agents tetra acetyl ethylene diamine and similar compounds may be used.
• Bleaching agents are used in the present invention in the range of 1% to 40% by weight ,varying with respect of concentration or purpose of the commpositions.
• Hydrotropes are solubilizers maintaining the pouring characteristic by preventing separation of the composition into layers.
• Hydrotrope compounds of the present invention are xylene sulfonate, cumen sulfonate, glycol ether sulfate and the like. Hydrotropes are used in the present invention in the range of 1% to 20% by weight ,varying with respect of concentration or purpose of the commpositions.
• Organic solvents are the main solvents used for this purpose and comprise for the present invention, ethanol, propanol, isopropanol, butoxy propoxy propanol, butoxy propanol, butoxy ethanol, , butyl diglycoether, benzyl alcohol, propoxy propoxy propanol, polypropylene glycol, ethers and diethers, alkoxylated glycols, C6-C16 glycol ethers, aliphatic branched alcohols, alkoxylated aliphatic alcohols, alkoxylated linear C1-C5 alcohols, linear C1-C5 alcohols and mixtures thereof. Used solvent amounts in the present invention may vary.
• Alkali may be used additionally in handling greasy soils.
• used alkali compounds are sodium carbonate, caustic soda among others.
• Softening agents impart softness, reduced static electric and reduced crinkling.
• Softening agents used in the present invention compositions comprise long chain amine, long chain quaternary ammonium compounds, diethyls ester dimethyl ammonium chloride and poly dimethyl siloxane among others.
• Foam boosting compounds used in hand wash laundry of the present invention are amides like lauryl myristyl monoethanolamide, betaines like cocoamido propyl betaine, sulfobetaine and amine oxides such as alkyl- or alkenyl- amine oxides having a linear or branched alkyl or alkenyl group having 1 to 24 carbon atoms ,exemplary, lauryl amido propyl amine oxide , myristal amido propyl amine oxide, lauryl dimethyl amine oxide, alkyl dimethyl amine oxides, cocodimethyl amine oxide, alkyl dihydroxyethyl amine oxide, coconut allyl dimethyl amine oxide, cocoamidopropyl amine oxide and cocoamide diethanolamide , prefferably cocodimethyl amine oxide. These compounds add foam enhancement and stability, emulsification and viscosity building properties to the compositions of the present invention. Foam boosting agents are used in the present invention in the range of 0.1% to
• Foam reducing agent inhibits formation of suds during the washing cycle.
• Siloxanes, paraffines, stearates, polydimethyl siloxanes, ethylene bis stearamide, silica, poly ethylene glycol , fatty alcohol, polyakoxylated compounds of nonionic character are foam reducing agents of choice among others in the present invention compositions.
• Dye transfer inhibitors are used to keep the textiles their original color by binding to free dye molecules and preventing them to redeposited onto other parts of textiles.
• Polyvinyl pyrrolidone and polyvinyl pyrrolidone N-oxide are the dy transfer inhibitor of choice among others,of the present invention compositions.
• Redeposition inhibitor prevents soil from being redeposited onto textiles during wash cycle.
• Carboxy methyl cellulose, polyvinyl pyrrolidone, poly ethylene glycol, polyvinyl alcohol are redeposition inhibitor of choice among others ,of the present invention compositions.
• Enzymes may be added especially to solid laundry compositions of the present invention composition comprising amylase, lipase and protease among others.
• Preservatives which can be optionally used in the present invention are compositions at a concentration of 0 wt. % to 3 wt.
• the preservatives used in the present invention may comprise benzalkonium chloride; benzethonium chloride; sodium benzoate; 5-bromo-5-nitro-1,3 dioxane ; 2-bromo-2- nitropropane-1, 3-diol ; alkyl trimethyl ammonium bromide; N- (hydroxymethyl)-N- (1, 3- dihydroxy methyl-2, 5-dioxo-4-imidaxolidinyl-N'- (hydroxy methyl) urea; 1-3-dimethyol- 5, 5-dimethyl hydantoin; formaldehyde; iodopropynl butyl carbamate, butyl paraben; ethyl paraben; methyl paraben; propyl paraben; mixture of methyl isothiazolinone/methyl
• Antimicrobials may be used to prevent disease and odour especially of hand washing laundry compositions. Quaterammonium chloride, alcohol among others may be used for this purpose in the present invention compositions.
• Buffering agents of basic nature such as sodium hydroxide, potassium hydroxide, alkali metal hydroxide, alkali metal carbonate, bicarbonate may be added to the present invention composition.
• Buffering agent of acidic nature such as citric acid, fumaric acid, organic acids and inorganic acids such as hydrochloric acid and sulfuric acid may be added to the present invention composition.
• Salts added to the compositions of the present invention may be organic or inorganic nature such as sodium chloride, magnesium sulfate, calcium chloride, sodium citrate, sodium sulfate among others.
• Corrosion inhibitor helps protect machine parts and prevent corrosion of metals.
• used corrosion inhibitors are sodium silicate and other suitable compounds of respective equipment.
• Optical brighteners enhance the light reflected from fabric surface by emitting blue light.
• Coumarin, stilben, aminotriazine compounds are optical brighteners of the choice among others in the present invention compositions.
• Surfactants interact with skin by binding to skin protein and cause swelling.
• An example is sodium lauryl sulfate which is limiting its use by hand wash detergents.
• a solution to this problem constitute use of mild surfactants, use of ethoxylated alcohols and skin compatibility agents.
• Skin compatibility agents of the present invention may comprise methyl ester sulfonate, coco fatty acid methyl ester sulfonate, betaine compounds prefferably cocamidepropyl-N,N-dimethylacetic acid.
• fragrances perfume and other components of convenient may be added.
• a Laundry composition according to the present invention is prepared by mixing oxidized humic acid and surfactants and other desirable ingredients necessary mixed in water to obtain liquid laundry composition of the present invention.
• a laundry composition of the present invention is prepared by mixing oxidized humic acid and surfactants and other desirable ingredients necessary in solid state to obtain solid laundry composition of the present invention.
• FTIR spectrum indicates increase of aliphatic hydrogen, phenolic groups and carbonyl moieties compared to humic acid FTIR spectrum.
• Obtained rection mixture in solution is used directly in laundry compositions.
• reaction mixture solvent may be removed and remaining solid mixture may be used in laundry compositions.
• oxidized humic acid reaction mixture solution is removed by spray drying technic to obtain a powder, which is used in the compositions of the present inventions as solide reaction mixture.
• Another alternative is purification of oxidized humic acid from unreacted humic acid , reactant and reaction byproducts. This may be achieved by separation of unreacted reactants and reaction byproducts and removing solvent or precipitating oxidized humic acid before or after removal of reaction byproducts and unreacted reactants.
• Oxidized humic acid formed is separated from reaction mixture by removal of reaction solvent and subsequent ethanol addition as precipitation. Obtained powder which is called separated oxidized humic acid is used in the compositions of the present invention.
• oxidized humic acid reaction mixture solution is added directly after completion of oxidation reaction. Remaining water is added to obtain a solution and to complete %100 and pH is adjusted to 8.
• Oxidized humic acid of Example 1 is replaced with % 0.1 commonly used complexation agent ethylene diamine tetra acetic acid tetrasodium salt Na4EDTA. Remaining ingredients are exactly the same with same ranges and same methode of preparation.
• washing tests with selected stains are carried out in the same conditions.
• oxidized humic acid containing laundry compositions are at least as good as comparative laundry compositions, regarding cleaning capabilities, even better.
• Oxidized humic acid powder prepared by reaction solvent removal by spray drying technic is added to the composition.
• Humic acid of example 2 is replaced with %1.5 SOKALAN PA 30CL which is a low molecular weight polyacrylic acid sodium polymer used as builder in cleaning compositions. Remaining ingredients are exactly the same with same ranges and same methode of preparation.
• Comparative washing tests same as in Example 1 are performed with Example 2 and comparative example 2 revealing that oxidized humic acid containing composition is performing at least as good as comparative laundry composition, regarding cleaning capability.
• oxidized humic acid is separated from reaction mixture by removal of reaction solvent and in Ethanol precipitated and added to the composition. Remaining water is added to obtain a solution and to complete %100.
• Humic acid of example 2 is replaced with 5% ACUSOL 460NK which is a polyacrylic acid sodium copolymer used as builder in cleaning compositions. Remaining ingredients are exactly the same with same ranges and same methode of preparation.
• Comparative washing tests same as in Example 1 are performed with Example 3 and comparative example 3 revealing that oxidized humic acid containing composition is performing at least as good as comparative laundry compositions, regarding cleaning capabilities.

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Citations (5)

• 2014
  • 2014-05-07 EP EP14001602.3A patent/EP2987847A1/de not_active Withdrawn
• 2015
  • 2015-04-29 WO PCT/TR2015/000176 patent/WO2015171091A1/en active Application Filing

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