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WO2018066006A1 - Composition de blanchiment - Google Patents

Composition de blanchiment Download PDF

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Publication number
WO2018066006A1
WO2018066006A1 PCT/IT2016/000228 IT2016000228W WO2018066006A1 WO 2018066006 A1 WO2018066006 A1 WO 2018066006A1 IT 2016000228 W IT2016000228 W IT 2016000228W WO 2018066006 A1 WO2018066006 A1 WO 2018066006A1
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WO
WIPO (PCT)
Prior art keywords
bleaching composition
composition according
polymer
liquid bleaching
fabrics
Prior art date
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Ceased
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PCT/IT2016/000228
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English (en)
Inventor
Matteo LEGA
Stefano Resta
Luca Sarcinelli
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Fater SpA
Original Assignee
Fater SpA
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Filing date
Publication date
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Priority to EP16810082.4A priority Critical patent/EP3523413B1/fr
Priority to PCT/IT2016/000228 priority patent/WO2018066006A1/fr
Priority to PT168100824T priority patent/PT3523413T/pt
Publication of WO2018066006A1 publication Critical patent/WO2018066006A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • C11D3/395—Bleaching agents
    • C11D3/3956—Liquid compositions
    • 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
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/044—Hydroxides or bases
    • 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
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/046—Salts
    • 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
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/06—Phosphates, including polyphosphates
    • 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
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/08—Silicates
    • 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
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/10—Carbonates ; Bicarbonates
    • 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
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/22—Carbohydrates or derivatives thereof
    • C11D3/221—Mono, di- or trisaccharides or derivatives thereof
    • 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
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/22—Carbohydrates or derivatives thereof
    • C11D3/222—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin
    • 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
    • C11D3/37—Polymers
    • C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/3757—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions
    • C11D3/3765—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions in liquid compositions
    • 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
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/10—Objects to be cleaned
    • C11D2111/12—Soft surfaces, e.g. textile
    • 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
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/10—Objects to be cleaned
    • C11D2111/14—Hard surfaces

Definitions

  • the present invention relates to bleaching compositions, in particular to hypochlorite bleaching compositions, suitable for use in hard surface cleaning and laundry applications such as hand and machine laundry methods .
  • Bleaching compositions are well-known in the art. Amongst the different bleaching compositions available, those relying on bleaching by hypohalite bleaches such as hypochlorite are often preferred, mainly for performance reasons, especially at lower temperature.
  • hypochlorite based-compositions a problem encountered with the use of hypochlorite based-compositions is the resulting damage and/or yellowing of the fabrics being bleached.
  • compositions containing phosphate compounds that are known to improve fabric whiteness and safety.
  • EP0867502 discloses a bleaching composition comprising sodium tripolyphosphate (STPP) .
  • hypohalite-containing composition suitable for use in laundry applications, which, maintaining the performances related to fabric whiteness, allows a better safety of fabrics treated therewith, in particular in terms of reduction of tensile strength loss.
  • compositions according to claim 1 a process according to claim 14 and a use according to claim 15.
  • a liquid bleaching composition comprising:
  • an effective amount of an hybrid polymer comprising: a synthetic polymer as the backbone of the hybrid polymer, and
  • a chain transfer agent selected from the group consisting of gluconic acid, glucoheptonic acid and naturally derived mono-, di-, oligo- or polysaccharides, as the chain terminating pdrtion of the polymer.
  • the present invention also encompasses a process of treating fabrics where said fabrics are immersed in a bleaching solution formed by diluting said bleaching composition in water.
  • the present invention further encompasses the use, in a hypohalite bleaching composition, of a hybrid polymer, for providing improved fabric safety to the fabrics treated therewith while maintaining fabric whiteness comparable to that obtained with product that are free from the hybrid polymer .
  • the present invention further encompasses the use, in a hypohalite bleaching composition, of an hybrid polymer, for providing improved shine properties to hard surfaces treated therewith.
  • the present invention further encompasses the use, in a hypohalite bleaching composition with a surfactants system, of a hybrid polymer, for providing improved stability in terms of gas evolution from hypoalite degradation.
  • Hypohalite bleaches may be provided by a variety of sources, including bleaches that are oxidative bleaches and subsequently lead to the formation of positive halide ions as well as bleaches that are organic based sources of halides such as chloroisocyanurates .
  • Suitable hypohalite bleaches for use herein include alkali metal and alkaline earth metal hypochlorites, hypo- bromites, hypoiodites, ' chlorinated trisodium phosphate dodecahydrates , potassium and sodium dichloroisocyanurates, potassium and sodium trichlorocyanurates, N-chloroimides , N- chloroamides , N-chloroamines and chlorohydantoins .
  • the preferred hypohalite bleaches among the above described are the alkali metal and/or alkaline earth metal hypochlorites, more preferably selected from the group consisting of sodium, potassium, magnesium, lithium and calcium hypochlorites, and mixtures thereof, even more preferably the sodium hypochlorite.
  • the liquid compositions according to the present invention comprise said hypohalite bleach such that the content of active halide in the composition is of from 0.1% to 20% by weight, more preferably from 2% to 8% by weight, most preferably from 2.5% to 5% by weight of the composition .
  • a source of alkalinity is another essential component for the compositions of the invention.
  • the source of alkalinity ensures that the pH of the composition as it is, is typically from 12 to 14 measured at 25°C.
  • the composition of the invention is buffered to a pH value ranging from 7.5 to 13, preferably from 8 to 12, more preferably from 8.5 to 11.5 after the composition has been diluted into 1 to 500 times its weight of water. It is in this alkaline range that the optimum stability and performance of the hypohalite as well as fabric whiteness and safety are obtained.
  • the pH range is suitably provided by the source of alkalinity and the hypohalite bleach mentioned hereinbefore, which are alkalis.
  • Suitable sources of alkalinity for use herein are selected from the group consisting of pH buffering agents, strong bases or mixtures thereof .
  • Preferred pH buffering agents are selected from the group consisting of alkali metal salts of carbonates, polycarbonates, sesquicarbonates , silicates, polysilicates , borates, metaborates, phosphates, stannates, alluminates and mixtures thereof, and preferably are selected from the group consisting of sodium carbonate, sodium silicate, sodium borate, and mixtures thereof.
  • Preferred strong bases are selected from the group consisting of caustic alkalis such as sodium hydroxide, potassium hydroxide and/or lithium hydroxide, and/or the alkali metal oxides such as sodium and/or potassium oxide and mixtures thereof, and preferably are selected from the group consisting of sodium hydroxide and potassium hydroxide .
  • the source of alkalinity is a mixture of calcium carbonate and sodium hydroxide.
  • the amount of the source of alkalinity in the composition is from 0.05% to 10% by weight of the total composition, preferably from 0.5% to 5% and more preferably from 1.0 to .0.
  • Typical levels of such strong bases when present, are of from 0.01% to 3.5% by weight, preferably from 0.1% to 3.0%, preferably from 0.5% to 2.8% even more preferably from 0.8 to 2.5% by weight of the composition.
  • Liquid bleaching compositions herein will contain an amount of pH buffering agent of from 0.05% to 5% by weight, preferably from 0.5% to 5% by weight, and more preferably in an amount of from 0.6% to 3% by weight of the composition.
  • a hybrid polymer component is another essential component for the compositions of the invention.
  • the hybrid copolymers useful in the composition of the invention are all those disclosed in EP1746109B1.
  • Graft copolymers are defined as a backbone of one monomer or polymer and one or more side chains derived from another monomer (s) attached on to the backbone (Odian, George, PRINCIPLES OF POLYMERIZATION, 2nd ed., Wiley-Interscience , New York, p. 424 (1981) ) .
  • Graft copolymers typically have a natural polymer backbone and short side chains derived from synthetic monomers.
  • the hybrid copolymers of the present invention have long chains of synthetic monomers that incorporate a moiety derived from natural material at the end of the chain. From Mark, Herman F . , ENCYCLOPEDIA OF POLYMER SCIENCE AND TECHNOLOGY, 3rd ed., Vol. 11, Wiley-Interscience , New York, p. 380 (2004), fragments of a chain transfer agent are incorporated into polymer chains as end groups. A transfer reaction can therefore be used to introduce specific end groups into the polymeric material.
  • the hybrid polymers of the composition of the present invention comprise a hydroxyl containing naturally derived chain transfer agent selected from the group consisting of gluconic acid, glucoheptonic acid and naturally derived mono-, di-, oligo- or polysaccharides, as the chain terminating portion of the polymer.
  • Examples of naturally derived mono-, di-, oligo- or polysaccharides include sucrose, fructose, maltose, glucose, and saccharose, as well as reaction products of saccharides such as mannitol, sorbitol and so forth.
  • the chain transfer agents include oxidatively, hydrolytically or enzymatically degraded monosaccharides, oligosaccharides and polysaccharides, as well as chemically modified monosaccharides, oligosaccharides and polysaccharides.
  • Such chemically modified derivatives include carboxylates , sulfonates, phosphates, phosphonates , aldehydes, silanes, alkyl glycosides, alkyl-hydroxyalkyls , carboxy-alkyl ethers and other derivatives.
  • Polysaccharides useful in the present invention can be derived from plant, animal and microbial sources.
  • examples of such polysaccharides include starch, cellulose, gums (e.g., gum arabic, guar and xanthan) , alginates, pectin and gellan.
  • Starches include those derived from maize and conventional hybrids of maize, such as waxy maize and high amylose (greater than 40% amylose) maize, as well as other starches such as potato, tapioca, wheat, rice, pea, sago, oat, barley, rye, and amaranth, including conventional hybrids or genetically engineered materials .
  • hemicellulose or plant cell wall polysaccharides such as D-xylans.
  • plant cell wall polysaccharides include arabino-xylans such as corn fiber gum, a component of corn fiber.
  • An important feature of these polysaccharides is the abundance of hydroxyl groups. These hydroxyl groups provide sites for chain transfer during the polymerization process . The higher the number of secondary and tertiary hydroxyl groups in the molecule the more effective it will be as chain transfer agent.
  • chain transfer agents include maltodextrins, which are polymers having D-glucose units linked primarily by cx-1,4 bonds and have a dextrose equivalent ( ⁇ ' ) of less than about 20.
  • Maltodextrins are available as a white powder or concentrated solution and are prepared by the partial hydrolysis of starch with acid and/or enzymes.
  • the chain transfer agents are maltodextrins and/or low molecular weight oxidized starches.
  • Useful chain transfer agents according to the present invention have molecular weights of less than about 20,000. In another aspect, the chain transfer agents have molecular weights of less than about 2000. In even another aspect, chain transfer agents according to the present invention have molecular weights of less than 1000.
  • Polysaccharides can be modified or derivatized by etherification (e.g., via treatment with propylene oxide, ethylene oxide, 2 , 3-epoxypropyltrimethylammonium chloride), esterification (e.g., via reaction with acetic anhydride, octenyl succinic anhydride ( x OSA' ) ) , acid hydrolysis, dextrinization, oxidation or enzyme treatment (e.g., starch modified with a-amylase, ⁇ -amylase, pullanase, isoamylase or glucoamylase) , or various combinations of these treatments.
  • etherification e.g., via treatment with propylene oxide, ethylene oxide, 2 , 3-epoxypropyltrimethylammonium chloride
  • esterification e.g., via reaction with acetic anhydride, octenyl succinic anhydride ( x OSA' )
  • acid hydrolysis e.g
  • the hydroxyl-containing naturally derived chain transfer agents can be used from about 0.1 to about 75% by weight based on total weight of the polymer. In one aspect, the range is from about 1 to about 50% by weight of chain transfer agents based on total weight of the polymer.
  • the hybrid copolymers are prepared from at least one hydrophilic acid monomer as the synthetic constituent.
  • hydrophilic acid monomers include but are not limited to acrylic acid, methacrylic acid, ethacrylic acid, ⁇ -chloro-acrylic acid, a-cyano acrylic acid, ⁇ -methyl-acrylic acid (crotonic acid) , a- phenyl acrylic acid, ⁇ -acryloxy propionic acid, sorbic acid, a-chloro sorbic acid, angelic acid, cinnamic acid, p-chloro cinnamic acid, ⁇ -styryl acrylic acid ( l-carboxy-4-pheriyl butadiene-1 , 3 ) , itaconic acid, maleic acid, citraconic acid, mesaconic acid, glutaconic acid, aconitic acid, fumaric acid, tricarboxy ethylene, 2-acryloxypropionic acid, 2- acrylamido-2-methyl
  • Moieties such as maleic anhydride or acrylamide that can be derivatized to an acid containing group can be used.
  • Combinations of acid-containing hydrophilic monomers can also be used.
  • the acid-containing hydrophilic monomer is acrylic acid, maleic acid, methacrylic acid, 2- acrylamido-2-methyl propane sulfonic acid or mixtures thereof .
  • hydrophobic monomers can also be used as the synthetic constituent.
  • hydrophobic monomers include, for example, ethylenically unsaturated ' monomers with saturated or unsaturated alkyl, hydroxyalkyl , alkylalkoxy groups, arylalkoxy, alkarylalkoxy, aryl and aryl-alkyl groups, alkyl sulfonate, aryl sulfonate, siloxane and combinations thereof .
  • hydrophobic monomers examples include styrene, a- methyl styrene, methyl . methacrylate , methyl acrylate, 2- ethylhexyl acrylate, octyl acrylate, lauryl acrylate, stearyl acrylate, behenyl acrylate, 2-ethylhexyl methacrylate, octyl methacrylate, lauryl methacrylate, stearyl methacrylate, behenyl methacrylate, 2-ethylhexyl acrylamide, octyl acrylamide, lauryl acrylamide, stearyl acrylamide, behenyl acrylamide, propyl acrylate, butyl- acrylate, pentyl acrylate, hexyl acrylate, 1-vinyl naphthalene, 2-vinyl naphthalene, 3-methyl styrene, 4-propyl
  • the hybrid polymers have thus the performance properties of synthetic polymers but use lower cost, readily available and environmentally friendly materials derived from renewable sources.
  • the number average molecular weight of the hybrid copolymer is between about 1000 and about 100,000. In another aspect, the number average molecular weight of the polymer is between about 2000 and about 25,000.
  • the hybrid polymer is present in an amount of about 0.02% to about 2% by weight of the total composition, preferably from 0.03% to 1% by weight of the total composition .
  • the polymerization process can be a solution or suspension process.
  • the process involves polymerization using free radical initiators with one or more of the above hydrophilic and/or hydrophobic monomers, and the hydroxyl containing natural products used as chain transfer agents or chain stoppers. These chain transfer agents can be added either at the beginning ' of the reaction or during reaction as the monomer (s) is (are) added.
  • This system makes use of typical free radical initiators. Unlike grafting systems, special redox systems such as Ce(IV) salts are not required. Instead, easy-to-use thermally activated initiators such as sodium persulfate can be used. One skilled in the art will recognize that most initiating systems are applicable here.
  • a high degree of chain transfer can lead to crosslinking and formation of an insoluble gel. In one embodiment, this can be avoided by ensuring that monomer and initiator are fed over the same approximate period of time. If initiator feed lasts much longer than monomer feed, a crosslinked gel can form, particularly when oligopolysaccharides and polysaccharides (those having a molecular weight greater than about 1000) are used as the chain transfer agent.
  • reaction product forms a hybrid gel during manufacture of these hybrid copolymers.
  • the synthetic monomer used is extremely reactive (e.g., acrylic acid reacted at low pH (protonated form) ) or if the natural chain transfer agent has a molecular weight of greater than about 1000.
  • a crosslinked gel starts to form after the monomer feed has ended and while the rest of the initiator is being fed in. This is undesirable in most cases, since the gel product cannot be diluted in water.
  • an undesirable gel starts to form during the process due to a reactive monomer, it can be eliminated in a number of ways. This includes reducing monomer reactivity by neutralizing the monomer. Alternatively, additional chain transfer agents like thiols, sodium hypophosphite and alcohols can also be used. Thiols and alcohols are particularly useful in controlling molecular weight and preventing the formation of crosslinked gels. Finally, these gels can be eliminated by shortening the initiator feeds so that the initiator and ' monomer feeds are pumped over the same period of time.
  • hybrid polymers examples include Alcoguard H5941 from Akzo Nobel, a hybrid polymer as above described of amylose-polyacrylate having a molar ratio between the polyacrylate and the amylose of from 1:1 to 1:100, preferably from 1:1 to 1:10, more preferably from 1:2 to 1:5, even more preferably 1 : 3, a molecular weight of the polyacrylate between 140 and 2500 and a molecular weight of the amylose between 342 and 3400.
  • composition according to the invention may also comprise one surfactant or a mixture of surfactants, added in a quantity sufficient to give the desired cleaning effectiveness .
  • surfactant refers to a substance which is able to lower the surface tension of the water.
  • the total level of surfactants varies from 0.001 to 20% w/w of the total quantity of aqueous solution, more preferably from 0.01 to 10%, even more preferably from 0.01 to 7%, even mere preferably from 0.0125 to 5% .
  • the surfactant or the mixture of surfactants contained in the liquid composition of the present invention are preferably anionic, nonionic, cationic, zwitterionic, amphoteric, ampholytic surfactants or mixtures thereof.
  • Non-exhaustive examples of anionic surfactants suited to the present invention comprise conventional anionic surfactants.
  • a sulfate surfactant such as alkoxylate and/or non-alkoxylate alkyl sulfates, and/or sulfonated surfactants, for example, alkyl benzene sulfonates, and their hydrosoluble salts.
  • alkoxylate alkyl sulfates comprise ethoxylated, propoxylated, ethoxylated/propoxylated and butoxylated alkylsulfate surfactants.
  • the alkyl group contains approximately 7 to approximately 20 atoms of carbon .
  • anionic surfactants that can be used for the present invention are the water soluble salts of paraffin sulfonates and secondary alkane sulfonates containing approximately 7 to approximately 20 atoms of carbon; alkyl glyceryl ether sulfonates, especially alcohol ethers from C7 to C20.
  • alkyl glyceryl ether sulfonates especially alcohol ethers from C7 to C20.
  • anionic surfactants useful for the present invention are the water soluble salts of carboxylic acid, for example lauroyl sarcosinate or myristoyl sarcosi ate .
  • the anionic surfactants are preferably hydrosoluble salts of alkali metals, ammonium salts and alkylammonium salts .
  • Non-exhaustive examples of nonionic surfactants suited to the present invention comprise fatty alcohol alkoxylates and alkyl amine oxides.
  • the fatty alcohol alkoxylates can be chosen from alcohol alkoxylates and alkylphenol alkoxylates with formula R0- (E) e - (P) p-H, in which
  • R is chosen from the group consisting of linear or branched aliphatic hydrocarbon radicals containing approximately 8 to approximately 20 carbon atoms and linear or branched alkyl phenyl radicals in which the alkyl groups contain approximately 8 to approximately 20 carbon atoms ,
  • - e and p respectively, represent the mean degree of ethoxylation and propoxylation and are between 0 and 24 (with the sum of e -I- p equal at least to 1) .
  • the alkyl amine oxides preferably have the formula RiR 2 R 3 NO, in which each R ' i , R 2 and R 3 groups are independently a C1-C30 alkyl group, more preferably a C1-C20 alkyl group, more preferably a C1-C18 hydrocarbon chain, even more preferably Ri and R 2 are methyl groups, and R3 is a C8-C18 hydrocarbon chain.
  • Non-exhaustive examples of cationic surfactants suitable for the present invention comprise quaternary ammonium surfactants, which can have up to 26 carbon atoms , alkoxylated surfactants of quaternary ammonium, such as hydroxyethyl dimethyl quaternary ammonium, hydroxyethyl lauryl dimethyl ammonium chloride.
  • Non-exhaustive examples of zwitterionic surfactants suitable for the present invention comprise derivatives of secondary and tertiary amines, derivatives of heterocyclic secondary and tertiary amines, or derivatives of quaternary ammonium quaternary phosphonium or compounds of tertiary sulphonium salts .
  • Non-exhaustive examples of ampholytic and/or amphoteric surfactants suitable for the present invention include derivatives of secondary or tertiary aliphatic amines, or heterocyclic aliphatic derivatives of secondary and tertiary amines in which the aliphatic radical can be linear or branched.
  • One of the aliphatic substituents can contain at least 8 atoms of carbon, for example 8 to 18 atoms of carbon, and at least one contains an anionic water solubilising group, for example carbonyl, sulfonate or sulfate.
  • At least one surfactant chosen from the group consisting of soluble salts of alkyl sulfates (primary or secondary ⁇ , soluble salts of alkyl sulfonates (primary or secondary ⁇ , paraffin sulfonates and secondary alkane sulfonates, linear or branched ethoxylated alcohols, amine alkyl oxides or quaternary ammonium surfactants is particularly preferred.
  • composition according to the invention may also comprise further optional components such as perfumes, bleach-stable surfactants, organic or inorganic alkalis, pigments, dyes, optical brighteners, solvents, chelating agents, radical scavengers and mixtures thereof.
  • perfumes bleach-stable surfactants, organic or inorganic alkalis, pigments, dyes, optical brighteners, solvents, chelating agents, radical scavengers and mixtures thereof.
  • the bleaching compositions of the invention are used in diluted form in laundry applications.
  • the expression "used in diluted form” herein includes dilution by the user, which occurs for instance in handwash laundry applications, as well as dilution by other means, such as in a washing machine.
  • the bleaching composition is diluted into 5 to 500 times its weight of water for hand laundry application and 10 to 500 times its weight of water in a washing machine.
  • hypohalite bleaching composition of an hybrid polymer for providing improved safety to the fabrics treated therewith while maintaining whiteness properties comparable to those of bleaching compositions that do not comprise the hybrid polymer.
  • improved safety it is meant that hypohalite bleaching compositions, with the hybrid polymer, provide better safety, i.e. less tensile strength loss, compared to hypohalite bleaching compositions which do not comprise said hybrid polymer ingredient .
  • RAT Rapid Aging Test
  • Example 2 performances in terms of whiteness and mechanical properties in laundry applications - knitted cotton
  • each formulation was diluted in 500 mL of tap water (dilution 7.5/500; pH TW>10), having a Fe content of 61.3 ppb, a Mn content of 2.6 ppb and a total hardness of 26°f (260 mg/L) .
  • Example 3 performances in terms of whiteness and mechanical properties in laundry applications-woven cotton
  • the test was repeated changing the key experimental conditions, namely: type of cotton, simulated wash condition and product formula.
  • type of cotton used determines the type of resistance test performed on fabric: burst test (UNI EN ISO 13938-2:2001) for knitted cotton or tear test (UNI EN ISO 13934-1:2000) for woven cotton.
  • formulations 6 and 7 were tested. The following procedure was used: 1.0 g of formulations 6 and 7 was diluted in 200 mL of tap water (dilution 2.5/500; pH TW>10). For every formulation, 5 fabrics (standard woven cotton provided by equest, 20x20 cm, in total « 40 g) were added to the solution. After 20 minutes, fabrics were rinsed 3 times and dried by tumble dryer. The wash cycle was repeated for 20 times.
  • the fabrics were analyzed by spectrophotometer in order to assess whiteness (WI Ganz) .
  • Results for sample 7 clearly show a recovery in tensile strength loss about 50% compared with sample 6, confirming the beneficial effect.
  • Example 4 performances in terms of whiteness and mechanical properties in laundry applications-woven cotton In order to deepen the understanding of the benefit deriving from the use of Alcoguard H5941, performances of formulation 6, 7, 8, 9, 16 were compared in the following test .
  • each formulation was diluted in 200 ml, of tap water (dilution 2.5/500; pH TW>10).
  • 5 fabrics standard woven cotton provided by equest, 20x20 cm, in total ⁇ 40 g were added to the solution. After 20 minutes, fabrics were rinsed 3 times and dried by tumble dryer. The wash cycle was repeated for 20 times.
  • the fabrics were analyzed by spectrophotometer in order to assess whiteness (WI Ganz) , and not relevant differences between Alcoguard and STPP were observed.
  • Example 5 performances in terms of whiteness and mechanical properties in laundry applications-woven cotton
  • compositions 6 0.049 STPP
  • 7 0.049 Alcoguard
  • composition of the invention still allows a reduction of the loss in tensile strength of the treated fabrics.
  • Example 6 performances in terms of whiteness and mechanical properties in laundry applications- ISO cotton
  • compositions 6 0.049 STPP
  • 7 0.049 Alcoguard
  • Multicycle test 50 cycle were performed at 40°C
  • the fabrics (ISO cotton F02) were analyzed by spectrophotometer in order to assess whiteness (WI Ganz). The results are illustrated in table 10. Alcoguard samples results in increased whiteness on these kind of cotton.
  • composition of the invention allows a reduction of the loss in tensile strength of the fabrics treated according to standard procedures .
  • Example 7 performances on shine in hard surface cleaning applications
  • the sponge was rubbed uniformly on the surface of a black, conditioned ceramic tile. The operation was repeated 3 times in different directions. The tail was left to dry for 10 minutes before evaluation of 4 trained graders.
  • compositions were tested (Table 12). Composition 10 has been takes as reference.
  • Alcoguard delivers a benefit in surface care in terms of shine and residues.
  • a reasonable mechanism is the improved dispersion ability towards salt residues on the surface, which allows less visible strokes.
  • trimethoxybenzoic acid 0.1 0.1 0.1 0.1 0.1 - - - - - - - - - - - - - - - - - - - -
  • hypochlorite-containing formulations develops molecular oxygen as main degradation product of the oxidant.
  • This reaction is catalytically enhanced by metal impurities which are usually present in water, such as copper and iron.
  • metal impurities which are usually present in water, such as copper and iron.
  • This phenomenon is very relevant for bleach products, because large values of gas evolution rate may cause bulging of bottles, which would cause drawbacks in terms of aesthetics and safety of the packaging. For this reason, GER is a key parameter for the assessment of the robustness of new formulations.
  • V h s volume of the headspace (cc)
  • T temperature (K) ;
  • R Universal gas constant [8.31 (J/mol K) ]
  • composition from 13 to 16 were tested also with a contamination of iron (400 ppb) and copper (200 ppb), which was added on top of the product.
  • the product already contains about 200 ppb of iron and 200 ppb of copper coming from raw materials .
  • Composition 22 1.3 0.4 0.8 0.5
  • Example 9 performances in terms of whiteness and mechanical properties in laundry applications for woven and ISO cotton
  • compositions 13, 14 and 15 have been tested in a laundry test.
  • Multicycle test (20 cycle) were performed in washing machine (Ariston Hotpoint ARXF 109) at 30°C.
  • the test procedure was the following:
  • the composition of the invention still allows a reduction of the loss in tensile strength of the treated fabrics.

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  • Engineering & Computer Science (AREA)
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  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
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Abstract

La présente invention concerne des compositions de blanchiment appropriées pour être utilisées dans des applications de nettoyage de surfaces dures et de blanchisserie comprenant un agent de blanchiment à base d'hypohalite, une source d'alcalinité dans une quantité allant de 0,05 % à 10 % en poids de la composition totale, et une quantité efficace d'un polymère hybride comprenant un polymère synthétique en tant que squelette du polymère hybride, et un agent de transfert de chaîne choisi dans le groupe constitué par l'acide gluconique, l'acide glucoheptonique et des mono-, di-, oligo- ou polysaccharides d'origine naturelle, en tant que partie de terminaison de chaîne du polymère. L'invention concerne en outre des utilisations de la composition de blanchiment pour offrir une sécurité améliorée aux tissus traités avec cette dernière ou une brillance améliorée à la surface dure traitée avec cette dernière.
PCT/IT2016/000228 2016-10-05 2016-10-05 Composition de blanchiment Ceased WO2018066006A1 (fr)

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EP16810082.4A EP3523413B1 (fr) 2016-10-05 2016-10-05 Composition de blanchiment
PCT/IT2016/000228 WO2018066006A1 (fr) 2016-10-05 2016-10-05 Composition de blanchiment
PT168100824T PT3523413T (pt) 2016-10-05 2016-10-05 Composição branqueadora

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11624042B2 (en) 2019-09-26 2023-04-11 Ecolab Usa Inc. High alkaline solvent-based degreaser and cleaner with diutan gum as a primary thickening system
US12146120B2 (en) 2019-09-26 2024-11-19 Ecolab Usa Inc. High alkaline solvent-based degreaser and cleaner with diutan gum thickener and alkali metal gluconate metal protectant

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EP3523413A1 (fr) 2019-08-14
PT3523413T (pt) 2021-07-06

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