[go: up one dir, main page]

WO2019005336A1 - Compositions de contrôle de mousse - Google Patents

Compositions de contrôle de mousse Download PDF

Info

Publication number
WO2019005336A1
WO2019005336A1 PCT/US2018/034035 US2018034035W WO2019005336A1 WO 2019005336 A1 WO2019005336 A1 WO 2019005336A1 US 2018034035 W US2018034035 W US 2018034035W WO 2019005336 A1 WO2019005336 A1 WO 2019005336A1
Authority
WO
WIPO (PCT)
Prior art keywords
foam control
control composition
composition
granulated
carrier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2018/034035
Other languages
English (en)
Inventor
Christophe DEGLAS
Julie DUBUISSON
Marion BRANCHY
Severine Cauvin
Benoit Henault
Jonathan THILL
Christel Simon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Silicones Corp
Original Assignee
Dow Silicones Corp
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 Dow Silicones Corp filed Critical Dow Silicones Corp
Publication of WO2019005336A1 publication Critical patent/WO2019005336A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/02—Foam dispersion or prevention
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/02—Foam dispersion or prevention
    • B01D19/04—Foam dispersion or prevention by addition of chemical substances
    • B01D19/0404—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance

Definitions

  • This invention relates to granulated foam control compositions for use in laundry detergents.
  • the granulated foam control compositions of the embodiments of the present invention can be added to detergent compositions to inhibit unwanted foaming when the detergent is used in a washing procedure, specifically, to reduce the foam level at the rinsing stage of said laundry washing procedure.
  • foam control agents are designed for use in automatic washing machines. They are active in the washing stage of the laundry washing procedure, to avoid overflow of foam. They are less suitable for hand washing applications as they eliminate or greatly reduce the lather in the washing stage. A foam control agent that would not greatly reduce the foam level in the washing stage but would cause fast defoaming in the rinse would allow saving of significant quantities of water and reduce the time and efforts needed for rinsing.
  • a granulated foam control composition comprising
  • composition [0006] Further optional ingredients selected from silicone resin, binder, surfactant and plasticizer may also be present in the composition.
  • a detergent composition comprising the granulated foam control composition.
  • polyethylene glycol of MW ranging of from 100,000 to 10,000,000 in a granulated foam control composition is disclosed.
  • a method to reduce foam at the rinsing step of a laundry washing procedure is also provided, together with the use of said granulated foam control composition in a laundry washing procedure.
  • a washing procedure is understood as comprising at least of one washing step and at least one rinsing step.
  • the washing step is when the detergent is combined with the laundry to be washed.
  • the rinsing step is when water is added to remove the detergent and foam from the laundry to be rinsed.
  • the present laundry washing procedure occurs primarily by hand, alternatively, it occurs exclusively by hand.
  • the present invention allows for a reduction of water consumption during the rinsing step of a laundry hand washing procedure, together with an improved sensory experience for the consumer effecting the washing procedure.
  • the present granulated foam control composition increases the transfer and the efficacy of the foam control agent in the rinse, as it withstands the washing step to be released only during the rinsing step.
  • the foam control composition is thus protected during the washing step and only released upon the rinsing step.
  • the polyethylene glycol of MW ranging of from 100,000 to 10,000,000 is believed to swell and keep the granulated foam control composition cohesive through the washing step.
  • the foam control agent is believed to be transferred onto the laundry and to be
  • Figure 1 illustrates the water uptake profile of compressed disks, where the X axis represents the time in minutes and the Y axis represents the water uptake in percent.
  • Figure 2 illustrates the surfaces of the testing basins as explained in the examples section: pictures of the surface of basin 1 is taken after step 2; pictures 3 & 4 are taken at the end of step 5, with step 4 and 5 lasting 4 minutes, where the foam is graded from 0 to 5, 0 corresponding to 'no foam' and 5 to 'surface totally covered by foam'.
  • branched as used herein describes a polymer with more than two end groups.
  • ambient temperature or “room temperature” refers to a temperature between about 20°C and about 30°C. Usually, room temperature ranges from about 20 S C to about 25°C.
  • substituted as used in relation to another group, for example, a hydrocarbon group, means, unless indicated otherwise, one or more hydrogen atoms in the hydrocarbon group has been replaced with another substituent.
  • substituents include, for example, halogen atoms such as chlorine, fluorine, bromine, and iodine; halogen atom containing groups such as chloromethyl, perfluorobutyl, trifluoroethyl, and nonafluorohexyl; oxygen atoms; oxygen atom containing groups such as (meth)acrylic and carboxyl; nitrogen atoms; nitrogen atom containing groups such as amines, amino-functional groups, amido- functional groups, and cyano-functional groups; sulphur atoms; and sulphur atom containing groups such as mercapto groups.
  • the granulated foam control composition is based on a typical foam control agent which comprises a hydrophobic fluid, a filler and an optional silicone resin, used in conjunction with a water insoluble carrier, and with a polyethylene glycol of MW ranging of from 100,000 to 10,000,000.
  • the hydrophobic fluid may be any type of typical silicone fluid or organic fluid or mixture thereof used in foam control agents.
  • the silicone fluids may be linear or branched.
  • a wide variety of silicone fluids are known as foam control fluids. There is no particularly specific required hydrophobic fluid, as long as it is compatible with the carrier and other ingredients in the formulation and perform as foam controlling hydrophobic fluid.
  • silicone fluid used in foam control agents include polydialkylsiloxanes such as polydimethylsiloxane or polydiethylsiloxane, branched siloxanes, alkylaryl
  • polyorganosiloxanes aryl functional siloxanes, polyorganosiloxanes substituted with amine, amido or polyoxyalkylene functionality, silicone polyether copolymers, organopolysiloxanes having carboxyl-functional organic groups, organopolysiloxanes having pendant esterified carboxyalkyl groups, or mixtures thereof.
  • Alkyl groups include those groups having 1 -20 carbon atoms, alternatively 1 -10 carbon atoms.
  • Polydialkylsiloxanes include polydimethylsiloxane (PDMS) which may be branched or have a higher viscosity (i.e. above 12,500 mm2 /s at 25°C).
  • PDMS polydimethylsiloxane
  • the organopolysiloxane also contains units of the formula RS1O3/2 or S1O4/2.
  • branching units include small three-dimensional siloxane resin particles which may have a number of pending siloxane polymer units. Thus a very loose network is formed of polyorganosiloxane chains giving a fluid branched organopolysiloxane.
  • organopolysiloxanes and methods of making them are described for example in EP-A-217501 , US-A-4639489, US-A-5668101 , WO 2007/137948.
  • Alternative polydialkylsiloxanes include those having different alkyl groups of varying chain length.
  • polysiloxanes comprising 50-100% diorganosiloxane units of the formula -(X'YSi-O)- and optionally up to 50% diorganosiloxane units of the formula -(Y 2 Si-0)- wherein Y denotes an alkyl group having 1 to 4 carbon atoms and X' denotes an alkyl group having 6 to 20 carbon atoms.
  • the groups Y in such a polydiorganosiloxane are preferably methyl or ethyl.
  • the alkyl group X' may preferably have from 6 to 12 or 14 carbon atoms, for example octyl, hexyl, heptyl, decyl, or dodecyl, or a mixture of dodecyl and tetradecyl.
  • Alkylaryl polyorganosiloxanes may comprise at least 10% diorganosiloxane units of the formula -(Y'YSi-O)- and up to 90% diorganosiloxane units of the formula -(YZSi-O)- wherein Z denoates a -X-Ph group, were X is a divalent aliphatic organic group bonded to silicon through a carbon atom; Ph denotes an aromatic group; Y denotes an alkyl group having 1 to 4 carbon atoms; and Y denotes an aliphatic hydrocarbon group having 1 to 24 carbon atoms.
  • the diorganosiloxane units containing a -X-Ph group preferably comprise 5 to 60% of the diorganosiloxane units in the fluid.
  • the group X is preferably a divalent alkylene group having from 2 to 10 carbon atoms, most preferably 2 to 4 carbon atoms, but can alternatively contain an ether linkage between two alkylene groups or between an alkylene group and -Ph, or can contain an ester linkage.
  • Ph is most preferably a phenyl group, but may be substituted for example by one or more methyl, methoxy, hydroxy or chloro group, or two substituents on the Ph group may together form a divalent alkylene group, or may together form an aromatic ring, resulting in conjunction with the Ph group in e.g. a naphthalene group.
  • a particularly preferred X-Ph group is 2-phenylpropyl -CH2-CH(CH 3 )-C6H 5 .
  • the group Y is preferably methyl but can be ethyl, propyl or butyl.
  • the group Y preferably has 1 to 18, most preferably 2 to 16, carbon atoms, for example ethyl, methyl, propyl, isobutyl or hexyl.
  • Mixtures of alkyl groups Y can be used, for example ethyl and methyl, or a mixture of dodecyl and tetradecyl.
  • Other groups may be present, for example haloalkyl groups such as chloropropyl, acyloxyalkyl or alkoxyalkyl groups or aromatic groups such as phenyl bonded direct to Si.
  • Aryl organopolysiloxanes may be a substantially linear polydiorganosiloxane or can be a branched organopolysiloxane containing for example up to 10 mole% branching units.
  • organopolysiloxanes having a phenyl group examples include
  • Polyorganosiloxanes substituted with amine, amido or polyoxyalkylene functionality have siloxane units of the general formula RaSi0 4 - a /2 in combination with siloxane units of the general formula R R'cSi04- - c 2, where R denotes a hydrocarbon group, preferably having from 1 to 12 carbon atoms, preferably an alkyl, aryl or alkenyl group, R' is a functional group, selected from an amine containing substituent, an amido containing substituent and a polyoxyalkylene containing substituent, a is an integer with a value from 0 to 3, b is an integer with a value of from 0 to 2, c is an integer with a value of 1 , 2 or 3; b + c having a value of from 1 to 3, preferably with an average of from 1 .6 to 2.4, more preferably 1 .9 to 2.2.
  • R' groups with amine functionality are preferably selected from aminoalkyl groups.
  • preferred aminoalkyl groups include -(CH 2 )3NH 2 , -(CH 2 ) 4 NH2, -(CH2) 3 NH(CH 2 )2NH2, -CH 2 CH(CH3)CH 2 NH(CH2)2NH2,
  • Amido containing substituents R' are provided for example by the group
  • R 2 represents a hydrogen atom and n has the value 3, 4, 5 or 6.
  • Preferred materials are those wherein R* represents a divalent hydrocarbon group or a group R 3 (NR 4 R 3 ) S wherein R 3 represents a divalent hydrocarbon group, R 4 represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkenyl group or an aryl group, or a group X, X represents the group CO(CHR 5 ) OH, wherein R 5 represents a hydrogen atom or an alkyl group and s has a value in the range 0 to 4, more preferably 1 or 2.
  • R 3 is as defined above, and t has a value of from 1 to 50, preferably 3 to 10 and u has a value of from 0 to 50, preferably 0 to 8.
  • Siloxane polyether copolymers can for example be a silicone polyether block copolymer comprising at least one polydiorganosiloxane block, for example a polydimethylsiloxane block, and at least one polyether block, for example a polyoxyethylene, block.
  • silicone polyether copolymers include polydimethylsiloxane-polyoxyethylene copolymers, polydimethylsiloxane-polyoxyethylene/polyoxypropylene copolymers, ethoxylated 3- hydroxypropylheptamethyltrisiloxane.
  • the organopolysiloxane containing pendant esterified carboxyalkyi groups can, for example, be a substantially linear polydiorganosiloxane or can be a branched
  • the carboxalkyl groups can, for example, contain 2 to 12 carbon atoms, particularly 2 to 5 carbon atoms, and can, for example, be carboxym ethyl, 2-carboxyethyl, 2-methyl-2-carboxyethyl or 2-ethyl-2- carboxyethyl groups.
  • the carboxyalkyi groups can be esterified by alkyl, aryl, aralkyl or cycloalkyi groups, for example the carboxyalkyi groups can each be esterified by an alkyl group having 1 to 20 carbon atoms.
  • all or most of the carboxyalkyi groups are esterified by an alkyl group having 8 to 18 carbon atoms, for example a n-octyl, 2-ethylhexyl, lauryl, tetradecyl, hexadecyl or stearyl group.
  • alkyl group having 8 to 18 carbon atoms for example a n-octyl, 2-ethylhexyl, lauryl, tetradecyl, hexadecyl or stearyl group.
  • a mixture of different alkyl groups for example alkyl groups of different chain length, can be used such as a mixture of C12 and C14 alkyl groups.
  • organic fluid used in foam control agents include oils, e.g. mineral oils, especially hydrogenated mineral oil or white oil, liquid polyisobutene, isoparaffinic oils and vegetable oils, for example peanut oil, coconut oil, olive oil, cottonseed oil and linseed oil.
  • oils e.g. mineral oils, especially hydrogenated mineral oil or white oil, liquid polyisobutene, isoparaffinic oils and vegetable oils, for example peanut oil, coconut oil, olive oil, cottonseed oil and linseed oil.
  • organic liquids include polyoxypropylene glycols, polyoxybutylene glycols, esters of carboxylic acids such as dioctyl phthalate, diethyl succinate, methyl caproate, butyl pelargonate, ethyl stearate, dodecyl laurate or methyl melissate and monohydric alcohols such as decanol.
  • organic fluids which are not liquid at 25°C but are liquid at higher temperatures include petroleum jelly or Vaseline®, higher alcohols and higher carboxylic acids such as myristic acid.
  • the hydrophobic fluid has a viscosity ranging of from 0.005 to 5000 Pa.s, at 25°C.
  • the hydrophobic fluid is present in the granulated foam control composition in an amount ranging of from 5 to 25% by weight, based on the weight of the granulated foam control composition, alternatively 5 to 20% by weight.
  • Hydrophobic fillers for foam control agents are well known and are particulate materials which are solid at 100°C, such as silica (typically having a surface area as measured by BET measurement of at least about 50 m 2 /g), titania, ground quartz, alumina, aluminosilicate, zinc oxide, magnesium oxide, a salt of an aliphatic carboxylic acids, a reaction product of an isocyanate with an amine, e.g. cyclohexylamine, or an alkyl amide such as
  • ethylenebisstearamide or methylenebisstearamide Mixtures of two or more of these can be used.
  • Some of the fillers mentioned above are not hydrophobic in nature, but can be used if made hydrophobic. This can be done either in situ (i.e. when dispersed in the hydrophobic fluid), or by pre-treatment of the filler prior to mixing with the hydrophobic fluid.
  • a suitable filler is silica that has been made hydrophobic. Suitable silica materials include those that are prepared by heating, e.g. fumed silica, or precipitation.
  • the silica filler may, for example, have an average particle size of about 0.5 to about 50 ⁇ , alternatively about 2 to about 30, and alternatively about 5 to about 25 ⁇ . It can be made hydrophobic by treatment with a fatty acid or by the use of methyl substituted organosilicon materials such as
  • dimethylsiloxane polymers which are end-blocked with silanol or silicon-bonded alkoxy groups, hexamethyldisilazane, hexamethyldisiloxane or organosilicon resins containing (CH 3 )3SiOi 2 groups and silanol groups.
  • Hydrophobing is generally carried out at a temperature of at least 100°C.
  • Mixtures of fillers can be used, for example a highly hydrophobic silica filler such as that sold under the trademark SIPERNAT® D10 from Evonik Industries (Germany) can be used together with a partially hydrophobic silica such as that sold under the trademark AEROSIL® R972 from Evonik Industries.
  • the hydrophobic filler in the foam control agent may be the same or different from the water insoluble carrier in the granulated foam control composition. Typically, the hydrophobic filler is different from the water insoluble carrier in the granulated foam control composition.
  • the hydrophobic filler is present in the granulated foam control composition in an amount ranging of from 0.25 to 10% by weight, based on the weight of the granulated foam control composition.
  • the foam control agent of the present invention may optionally include one or more organosilicon resins.
  • the organosilicon resin may be a non-linear siloxane resin.
  • the organosilicon resin includes siloxane units having the formula R' a SiO( 4 - a )/2, wherein R' denotes a hydroxyl, hydrocarbon, or hydrocarbonoxy group, and wherein a has an average value of from about 0.5 to about 2.4.
  • the organosilicon resin includes monovalent trihydrocarbonsiloxy (M) groups of the formula R"3SiOi 2 and tetrafunctional (Q) groups Si0 4 /2, wherein R" denotes a monovalent hydrocarbon group.
  • the M/Q ratio is in the range about 0.4:1 to about 2.5:1 (equivalent to the value of a in the formula R' a SiO( 4 - a )/2 of about 0.86 to about 2.15) for use in laundry detergent applications.
  • the M/Q ratio is from about 0.4:1 to about 1 .1 :1 for use in laundry detergent applications.
  • M/Q ratio about 0.5:1 to about 0.8:1
  • the organosilicon resin described herein is generally a solid at room temperature.
  • liquid organosilicon resins e.g., those having a M/Q ratio greater than about 1.2 may also be used.
  • the organosilicon resin typically includes only M and Q groups, as described above. However, it is contemplated that a resin comprising M groups, trivalent R"Si0 3 /2 (T) groups and Q groups may also or alternatively be used.
  • the organosilicon resin may also include divalent units R" 2 Si0 2 /2, e.g., in an amount of about 20% or less of all siloxane units present.
  • the group R" may comprise an alkyl group (e.g., methyl, ethyl, or phenyl) having from about 1 to about 6 carbon atoms. It may be desirable that about 80% to substantially all of the R" groups present be methyl groups.
  • organosilicon resins are generally well known and can be made in solvent or in situ, e.g., by hydrolysis of certain silane materials. In one embodiment, the organosilicon resin is made by hydrolysis and condensation in the presence of a solvent (e.g. xylene) of a precursor of the tetravalent siloxy unit (e.g.
  • tetra-orthosilicate tetraethyl orthosilicate, polyethyl silicate or sodium silicate
  • a precursor of monovalent trialkylsiloxy units e.g. trimethylchlorosilane, trimethylethoxysilane, hexamethyldisiloxane, or hexamethyldisilazane.
  • the resulting MQ resin may, if desired, be further trimethylsilylated so that it is reacted out. Residual Si-OH groups may be heated in the presence of a base to cause self -condensation of the resin by elimination.
  • the organosilicon resin is present in the granulated foam control composition in an amount ranging of from 0 to 5 % by weight, alternatively of from 0.1 to 5 % by weight, based on the weight of the granulated foam control composition.
  • the water insoluble carrier of the granulated foam control composition may be selected from silicates, aluminosilicates, starches, insoluble clays, or mixtures thereof.
  • silicates examples include magnesium silicate
  • aluminosilicate examples include zeolite.
  • starches examples include starch from rice, potato, wheat, corn.
  • the zeolite may be any of those crystalline or amorphous aluminosilicate materials that are known to be beneficial in detergent powder compositions.
  • Suitable zeolites may be pre- treated with e.g. non-ionic surfactants, but are preferably untreated zeolites, as they seem to provide a better stability of the foam control agent when stored in a powder detergent composition.
  • the carrier is present in the granulated foam control composition in an amount ranging of from 60 to 94% by weight, based on the weight of the granulated foam control composition.
  • a polyethylene glycol of MW ranging of from 100,000 to 10,000,000 is present in the granulated foam control composition.
  • the polyethylene glycol has a molecular weight (M n ) of at least 100,000, preferably at least 300,000, preferably at least 500,000, preferably at least 1 ,000,000, preferably at least 2,000,000, preferably at least 3,000,000; preferably no more than 10,000,000, preferably no more than 8,000,000, preferably no more than 7,000,000.
  • M n molecular weight
  • the polyethylene glycol of MW ranging of from 100,000 to 10,000,000 may have a viscosity in water as follows: for 5%wt dispersion, the viscosity may range of from 30 to 10,000 mPa/s; and for 1 %wt dispersion, the viscosity may range of from 1 ,000 to 15,000 mPa/s.
  • the polyethylene glycol of MW ranging of from 100,000 to 10,000,000 is processed under its solid, undispersed form and that it is maintained in a solid form throughout the manufacturing process. It then serves as an external cohesive agent for the granulated foam control agent, and may not be processed after dispersion in water.
  • polyethylene glycol of MW ranging of from 100,000 to 10,000,000 in its liquid, dispersed form it may be suitable to the present inventing to process the polyethylene glycol of MW ranging of from 100,000 to 10,000,000 in its liquid, dispersed form.
  • the polyethylene glycol is typically not miscible with the silicone hydrophobic fluid.
  • the polyethylene glycol is typically not charged.
  • the polyethylene glycol of MW ranging of from 100,000 to 10,000,000 is present in the granulated foam control composition in an amount ranging of from 0.4 to 15% by weight, based on the weight of the granulated foam control composition, alternatively of from 0.4 to 12% by weight, alternatively of from 0.4 to 8% by weight.
  • a binder may be present in the granulated foam control composition.
  • the binder is a material which can be applied to the carrier as a liquid binding medium and which can be solidified to a solid which binds carrier particles together.
  • the binder is different from the polyethylene glycol of MW ranging of from 100,000 to 10,000,000.
  • binder examples include material having a solid consistency at room temperature, i.e. from 20 to 25°C, for example a waxy material of melting point 35 to 70°C, this type of material may be an organic material such as beeswax, carnauba wax, or a silicone material such as alkyl-functional silicone wax, alkyl-functional silanes, amine-functional silicone wax, amide- functional silicone wax, and any combination thereof.
  • binder examples include water-soluble or water-dispersible polymers, preferably a film-forming polymer, which can be applied as an aqueous solution or emulsion to the carrier and can be solidified by drying to agglomerate the carrier, such as polycarboxylate, polyvinyl alcohol, poly(meth)acrylic acid, polyacrylamide or mixtures or salts of these.
  • the binder is chosen from polyvinyl alcohols.
  • Polyvinylalcohol can be any commercially available polyvinyl alcohol and may for example have a degree of hydrolysis in the range 80% to 99.9%.
  • the viscosity of the PVA namely of a 4% aqueous solution of PVA in water, may be in the range of from 3 to 60 mPa.s, as measured by a Hoppler viscometer (DIN 53015) at 20°C.
  • the binder may be present in the granulated foam control composition in an amount ranging of from 0 to 15 % by weight, based on the weight of the granulated foam control composition, alternatively of from 0.5 to 15% by weight, alternatively of from 0.5 to 10% by weight.
  • the granulated foam control composition may contain further optional ingredients, such as plasticizers, softness agent, surfactants, colorants, preservatives.
  • Plasticizers may be used to plastify the binder if necessary, to promote plasticity, flexibility and to reduce brittleness of the binder.
  • plasticizers include glycerol, glycerin, dipropylene glycol, ethylene glycol, polyethylene glycol, soy lecithin, benzyl butyl phthalate, dipropylene glycol dibenzoate.
  • the plasticizer may be present in the granulated foam control composition in an amount ranging of from 0 to 8 % by weight, based on the weight of the granulated foam control composition, alternatively of from 0.1 to 8% by weight.
  • Suitable softness agent includes aminofunctional silicone fluid, polydimethylsiloxane (same or different from hydrophobic fluid discussed above).
  • Suitable surfactants include any of anionic, nonionic and cationic surfactants or mixtures thereof.
  • anionic surfactants include alkylbenzene sulphonates, particularly linear alkylbenzene sulphonates having an alkyl chain length of 8 to 16 carbon atoms; primary and secondary alkyl sulphates, particularly primary alkyl sulphates having an alkyl chain length of 8 to 16 carbon atoms; alkyl ethersulphates; olefin sulphonates; alkyl xylene sulphonates; dialkyl sulphosuccinates; and fatty acid ester sulphonates.
  • Sodium salts are generally preferred.
  • the detergent composition preferably contains an anionic surfactant, optionally with a nonionic surfactant.
  • Nonionic surfactants that may be used include the primary and secondary alcohol ethoxylates, especially aliphatic alcohols having 8 to 20 carbon atoms ethoxylated with an average of from 1 to 20 moles, preferably 1 to 10 moles, of ethylene oxide per mole of alcohol.
  • Suitable non-ethoxylated nonionic surfactants include alkylpolyglycosides, glycerol monoethers, and polyhydroxyamides.
  • Examples of cationic surfactants include alkylamine salts, quaternary ammonium salts, sulphonium salts and phosphonium salts.
  • the surfactant may be present in the granulated foam control composition in an amount ranging of from 0 to 10 % by weight, based on the weight of the granulated foam control composition, alternatively of from 0.1 to 10% by weight.
  • the present invention also relates to methods for the preparation of a granulated foam control composition.
  • a first method for the preparation of a granulated foam control composition comprises the sequential steps of
  • liquid foam control composition comprising at least the hydrophobic fluid, the hydrophobic filler, and the binder
  • step 3 depositing the polyethylene glycol of MW ranging of from 100,000 to 10,000,000 in solid form on the temporary wet granules of step 3);
  • step 4) drying the temporary wet granules of step 4) to produce the granulated foam control
  • a second method for the preparation of a granulated foam control composition comprises the sequential steps of
  • liquid foam control composition comprising at least the hydrophobic fluid, the hydrophobic filler, and the binder
  • step 4) drying the temporary wet granules of step 3) to produce the granulated foam control
  • a third method for the preparation of a granulated foam control composition comprises the sequential steps of
  • liquid foam control composition comprising at least the hydrophobic fluid, the hydrophobic filler, the binder and the polyethylene glycol of MW ranging of from
  • step 4) drying the temporary wet granules of step 3) to produce the granulated foam control
  • the liquid foam control composition (i) may be provided by mixing, and optionally heating, the liquid ingredients which will provide for said liquid foam control composition.
  • the liquid foam control composition may be a dispersion or may be an emulsion.
  • the surfactants described above may this be used to emulsify the hydrophobic ingredients in water.
  • the carrier composition may be provided by mixing the carrier and solid polyethylene glycol of MW ranging of from 100,000 to 10,000,000 and any other suitable solid ingredient, by any means suitable to combine powders.
  • the deposition of the liquid foam control composition (i) on the carrier or carrier composition (ii) is carried out by any of the known conventional methods to produce powders. Such methods include spray drying, fluidized bed, agglomeration methods, granulation methods, extrusion methods.
  • the granulated foam control composition may be made by an agglomeration process in which the liquid foam control composition is sprayed onto the particulate carriers while agitating the particles.
  • the particles are agitated in a high shear mixer through which the particles pass continuously.
  • One type of suitable mixer is a vertical, continuous high shear mixer in which the foam control composition is sprayed onto the particles.
  • a vertical, continuous high shear mixer in which the foam control composition is sprayed onto the particles.
  • One example of such a mixer is available under the name Flexomix mixer from Hosokawa Schugi.
  • Alternative suitable mixers which may be used include horizontal high shear mixers, in which an annular layer of the powder-liquid mixture is formed in the mixing chamber, with a residence time of a few seconds up to about 2 minutes.
  • Examples of this family of machines are pin mixers, e.g., TAG series from LB, RM-type machines from Rubberg-Mischtechnik or other pin mixers supplied by Lodige, and paddle mixers, e.g. CB series from Lodige, Corimix from Drais-Manheim and Conax from Ruberg Mischtechnik.
  • Glatt granulators are Glatt granulators, ploughshare mixers, as sold for example by Lodige GmbH, twin counter-rotating paddle mixers commercially available under the name Forberg, intensive mixers including a high shear mixing arm within a rotating cylindrical vessel, commercially available under the name Typ R from Eirich, under the name Zig-Zag from Patterson-Kelley, and under the name HEC from Niro.
  • the deposition may be done by pouring the mixture into the mixer, as well as spraying and/or extrusion.
  • the granulated foam control composition may comprise
  • the present invention also discloses a detergent composition comprising the granulated foam control composition described above.
  • the detergent composition of the invention is preferably a laundry detergent, but can alternatively be a detergent for dish washing or a detergent composition for personal care use such as a shampoo, shower gel or soap bar. In all of these applications, the consumer may prefer to see lather during the washing step but rapid defoaming in the rinsing step.
  • the detergent composition is typically in a solid form.
  • the detergent composition may be a powder, bar or tablet.
  • Solid bars may be soap-containing bars or synthetic bars.
  • Laundry detergents for hand washing or for use in semi-automatic machines are commonly sold in powder form.
  • the detergent composition comprises at least one detersive surfactant, which may be chosen from soap and non-soap anionic, cationic, nonionic, amphoteric and zwitterionic detergent-active surfactants, and mixtures thereof.
  • detersive surfactant which may be chosen from soap and non-soap anionic, cationic, nonionic, amphoteric and zwitterionic detergent-active surfactants, and mixtures thereof.
  • suitable detergent-active surfactants are available and are fully described in the literature, for example, in "Surface-Active Agents and Detergents", Volumes I and II, by Schwartz, Perry and Berch.
  • the preferred detersive surfactants that can be used are soaps and/or synthetic non-soap anionic and/or nonionic compounds.
  • the total amount of surfactant present is suitably within the range of from 5 to 40 wt% of the detergent composition.
  • the detergent compositions may also contain one or more detergency builders.
  • the total amount of detergency builder in the compositions will suitably range from 5 to 80 wt%, preferably from 10 to 60 wt%.
  • Inorganic builders that may be present include sodium carbonate, crystalline and amorphous aluminosilicates, for example, zeolites, and layered silicates.
  • Inorganic phosphate builders for example, sodium orthophosphate, pyrophosphate and tripolyphosphate, may also be present.
  • Organic builders that may be present include polycarboxylate polymers such as polyacrylates, acrylic/maleic copolymers, and acrylic phosphinates; monomeric polycarboxylates such as citrates, gluconates, oxydisuccinates, glycerol mono-, di- and trisuccinates, carboxymethyloxysuccinates,
  • alkenylmalonates and succinates alkenylmalonates and succinates; and sulphonated fatty acid salts.
  • Builders both inorganic and organic, are preferably present in alkali metal salt, especially sodium salt, form.
  • the detergent composition may also contain a peroxy bleach compound, for example, an inorganic persalt or an organic peroxyacid, capable of yielding hydrogen peroxide in aqueous solution.
  • a peroxy bleach compound for example, an inorganic persalt or an organic peroxyacid, capable of yielding hydrogen peroxide in aqueous solution.
  • Preferred inorganic persalts are sodium perborate monohydrate and tetrahydrate, and sodium percarbonate.
  • the peroxy bleach compound may be used in conjunction with a bleach activator (bleach precursor), for example a peroxycarboxylic acid precursor, more especially a peracetic acid precursor such as tetraacetyl ethylenediamine, or a peroxybenzoic acid or peroxycarbonic acid precursor.
  • Detergent compositions intended for personal care use such as shampoo compositions can contain other ingredients selected for example from conditioners to facilitate combing and/or styling of the hair and/or to improve the shine and/or softness of the hair, perfumes, fragrances, colorants such as dyes, essential oils, vitamins, buffering agents, stabilizers and preservatives.
  • Detergent powders can, for example, be prepared by spray-drying a slurry of compatible heat insensitive ingredients, or by mixing and granulation of raw materials, preferably using a high-speed mixer/granulator. Less robust or more heat sensitive ingredients can be
  • the foam- inhibiting composition of the invention is preferably subsequently incorporated in this way.
  • the granulated foam control composition is present in the detergent composition in an amount of from 0.1 to 15%wt based on the weight of the detergent composition, alternatively of from 0.5 to 10%wt, alternatively of from 1 to 8%wt.
  • the present detergent comprising the granulated foam control composition is suitable for use at temperatures ranging of from 5 to 50°C, alternatively of from 5 to 40°C, alternatively of from 10 to 40°C, and at water hardness ranging of from 0 to 500 mg/L.
  • the present invention provides for a use of a polyethylene glycol of MW ranging of from 100,000 to 10,000,000 in a granulated foam control composition.
  • the present invention provides for the use of a granulated foam control composition as described above to reduce foam during the rinsing stage of a laundry washing procedure.
  • Other benefits imparted form the granulated foam control composition may include ease of ironing, softness, fragrance delivery.
  • a water uptake test was designed to verify suitability of the polyethylene glycol of MW ranging of from 100,000 to 10,000,000 to improve cohesion of the granulated foam control composition. The test requires provision of a compressed disk and measurements of water uptake in specific conditions.
  • a mixture of the polyethylene glycol of MW ranging of from 100,000 to 10,000,000, the binder and the carrier is prepared in aqueous solution, in a plastic vessel under shear in a Hauschild speedmixer DAC 150.
  • the second step is to transfer the mixture in an aluminum cup to be dried in an oven for 4 hours at 60°C.
  • the dried powder is then crunched in a mortar and pestle agate for 2min. 0.27g of the crunched powder is used to make a compressed disk using an equipment for IR disk preparation, applying 2 bar of pressure for 2min.
  • the water update of the compressed disk is then evaluated as follows.
  • the compressed disk is initially weighted in an aluminum cup.
  • the disk is put on a spatula which is damped into crystallizer containing 700 imL of wash liquor for 15 seconds.
  • the disk is then gently put down on a paper towel to remove excess and surface water.
  • the weight of the disk is then measured again.
  • the disk is put back on the spatula and damped again into the wash liquor for 1 minute. These steps are repeated until the disk starts to break or falls apart.
  • the percentage of weight uptake is the (disk weight at t - disk weight at t0)x100 / disk weight at tO; to being the initial time, t is damping time.
  • the water uptake profile is provided in Figure 1 , where the X axis represents the time in minutes and the Y axis represents the water uptake in percent.
  • the dotted line A represents the water uptake of a compressed disk comprising polyethylene glycol of MW ranging of from 100,000 to 10,000,000, while the full line B represents a compressed disk free of polyethylene glycol as claimed.
  • the compressed disk free of polyethylene glycol is falling apart after 8 minutes, while the compressed disk comprising polyethylene glycol of MW ranging of from 100,000 to 10,000,000 takes up water regularly for at least 22 minutes.
  • the compressed disk should take up to 30% of water in less than 10min, should continue to take up water continuously without breaking or dissolving. In some instances, this test may be used to indicate suitable polyethylene glycol types.
  • the polyethylene glycol of MW ranging of from 100,000 to 10,000,000 will impart water resistance to the granule so that the foam control agent is ultimately released during the rinsing step of the laundry washing procedure and not during the washing step of the washing procedure.
  • Antifoam compound AFC1 based on a mixture of branched polymethylsiloxane polymer and MQ resin, with 3% of a hydrophobic silica, prepared according to the teaching of EP217501
  • Antifoam compound AFC2 based on a mixture of branched polymethylsiloxane polymer and MQ resin, having 3% of silica rendered hydrophobic according to the teaching of EP0163541
  • Antifoam compound AFC3 based on a mixture of dimethylmethylarylsiloxane polymer and MQ resin, having 6% of a hydrophobic silica
  • PVA 4-88 PVA with a viscosity of 4mPa.s at 4% in water (20°C) and 88% of hydrolyzed functions: 20% solution in water
  • PVA 8-88 PVA with a viscosity of 8mPa.s at 4% in water (20°C) and 88% of hydrolyzed functions
  • PAA Polyacrylic acid: 50% solution of polyacrylic acid, Na-salt, partly neutralized with a molecular weight of approximately 4000 g/mol, solution having a viscosity of 600 mPa.s (Brookfield, 23 S C) (used in Comparative example 4)
  • Zeolite Doucil 4A from INEOS, having an average particle size of 2-5 microns
  • Sodium sulfate from Crimidesa, having a particle size characterized by a D50 of 15 microns
  • PEO 1 Polyoxyethylene glycol of Molecular weight of 4,000,000 (used in Comparative example 3, in Examples 1 to 10, 14 to 18)
  • PEO 2 Polyoxyethylene glycol of Molecular weight of 100,000 (used in Example 1 1 )
  • PEO 3 Polyoxyethylene glycol of Molecular weight of 600,000 (used in Examples 12 and 20 in solid form and in Example 19 in solution form of 5% active in water)
  • PEO 4 Polyoxyethylene glycol of Molecular weight of 8,000,000 (used in Example 13)
  • Preparation of granulated foam control compositions the ingredients of the granulated foam control compositions and their respective amounts are indicated in "wet” conditions, indicating weight percentages of the respective ingredients based on the total weight of the "wet” composition; and in dry conditions, where compositions are estimated as if 100% of the water is removed, although a maximum of 2% wt of residual water may be tolerated.
  • the granulated foam control compositions prepared herein typically were prepared with 180 to 250g of carrier.
  • liquid foam control composition in the form of an emulsion, comprising blending the binder aqueous solution with alkylbenzenesulfonic acid ABSA anionic surfactant, silicone antifoam compound and water, mechanically mixing the ingredients using a lab blender equipped with a shaft;
  • step 4) depositing the polyethylene glycol of MW ranging of from 100,000 to 10,000,000 in solid form on the temporary wet granules of step 3) by addition into the drum mixer;
  • step 5) drying the temporary wet granules of step 4) in a fluidized bed to produce the granulated foam control composition.
  • liquid foam control composition in the form of an emulsion, comprising blending the binder aqueous solution with alkylbenzenesulfonic acid ABSA anionic surfactant, silicone antifoam compound and water, mechanically mixing the ingredients using a lab blender equipped with a shaft;
  • step 3 depositing the liquid foam control composition (i) by pouring it very slowly into a drum mixer on the carrier composition (ii) of step 2) to produce temporary wet granules;
  • liquid foam control composition (i) in the form of an emulsion, comprising blending the aqueous solution of polyethylene glycol of MW ranging of from 100,000 to
  • step 3 depositing the liquid foam control composition (i) by pouring it very slowly into a drum mixer on the carrier (ii) of step 2) to produce temporary wet granules;
  • step 4) drying the temporary wet granules of step 3) in a fluidized bed to produce the granulated foam control composition.
  • the hand laundry washing procedure a washing phase, a shearing phase and a rinsing phase were carried out in basins with each of the granulated foam control agent prepared as described herein.
  • Basin for the wash 1 and rinse phase 3 and 4 contain 2L of water with a hardness of 100 mg/L CaC03 at 30 S C.
  • Three knitted cotton fabrics (weight, 150 g) were used in the hand washing cycle.
  • the shear basin number 2 does not contain water but a plate to rub the fabric to mimic the actual washing phase occurring in real life situation. (26x26cm at the bottom, 30x30cm on top)
  • Step 1 In the washing phase, in basin 1 , 10g of detergent powder and 0.3g of the granulated foam control agent are dispersed in the 2L of water until foam reaches 10cm from the bottom of the basin. Fabrics are placed in the basin, returned once to be wet and a soaking time of 2 minutes is applied.
  • Step 2 Each fabric is removed from the wash basin one by one, drained from the excess of water and put aside. Each fabric is then folded in four, rubbed 5 times on each side onto a board in the shear basin 2 and then put aside again during the rubbing of the other fabrics.
  • Step 3 The total weight of the 3 fabrics is 400 g +/- 10g after shearing and wringing.
  • Step 4 In the rinse basin 3, each fabric is rinsed separately, laid out, folded in 2 in the basin, gently squeezed 5 times by hand, reversed and squeezed 5 times inside the water and finally drained.
  • the 3 fabrics should weight 450g +/- 10g in total.
  • Step 5 Step 4 is repeated in rinse basin 4.
  • the 3 fabrics should weight 480g +/- 10g in total.
  • Figure 2 surfaces of basins: pictures of the surface of basin 1 is taken after step 2; pictures 3 & 4 are taken at the end of step 5, with step 4 and 5 lasting 4 minutes, where the foam is graded from 0 to 5, 0 corresponding to 'no foam' and 5 to 'surface totally covered by foam'.
  • foam grade can be inferior or equal to 4 but if foam grade equal to 5, foam grade in basin 4 must be 0
  • foam grade can be inferior or equal to 2, but foam grade must be 0, if equal foam grade equal to 5 in basin 3.
  • the commercial VIVA powder free of foam control agent, sets the standard for an accepted level of foam during the wash, but maintains too much foam during the rinse steps.
  • Comparative example 1 is free of polyethylene glycol of MW ranging of from 100,000 to
  • Comparative example 2 features sodium sulfate, a water soluble carrier, and is free of polyethylene glycol of MW ranging of from 100,000 to 10,000,000.
  • the foam control agent is already released in the washing stage with a level of foam of 1 , too low for an acceptable hand wash detergent.
  • Comparative example 3 features sodium sulfate, a water soluble carrier, and contains polyethylene glycol of MW ranging of from 100,000 to 10,000,000. Although PE01 is present, the granule is too quickly dissolved and confirms the carrier should be water insoluble.
  • Comparative example 4 contains polyacrylic acid as binder and is free of polyethylene glycol of MW ranging of from 100,000 to 10,000,000. This binder is too soluble, the dissolution takes place to quickly during the washing stage, and the foam control agent is released too early.
  • Example 1 is provided according to the present invention, using Method 2. The foam level in the wash is maintained to an acceptable level, and the level of foam in the first rinse is 1 and in the second rinse is zero. This example demonstrates the ability of the current invention to keep the foam in the wash and release only the antifoam performance into the rinse after rubbing and squeezing of the laundry fabrics.
  • Examples 2 to 5, prepared using Method 2, exemplify that the granulated composition of the present invention may be achieved by varying the amount of polyethylene glycol of MW ranging of from 100,000 to 10,000,000 as of from 0.4 to 8 %wt of the dry granulated composition.
  • Example 6 prepared using Method 1 , confirms that an alternative method of preparation allows to prepare suitable granulated compositions.
  • Examples 7 to 10, prepared using Method 2 feature various binder types and concentrations, which are varied within the scope of the invention.
  • Example 18 prepared using Method 2, features a blend of binders.
  • Examples 1 1 , 12, 13, prepared using Method 2 indicate that performances are maintained in the wash and in the rinse, although the viscosity of the polyethylene glycol ranging of from 100,000 to 10,000,000 is varied.
  • Examples 14 and 15 featuring alternative antifoam compounds are suitable within the scope of the invention.
  • Examples 16 and 17 indicate that 5% of a plasticizer such as glycerin, can be added while keeping an acceptable control of the foam in the wash and having perfect performance in the rinses, indicating that plasticizers or solvents of the binder may also be used without being detrimental to the performances.
  • a plasticizer such as glycerin
  • Example 19 The granulated composition of Example 19 was prepared using the third method (Method 3).
  • the PE03 was first prepared as an aqueous solution at 5% in water.
  • Example 20 The granulated foam control composition of Example 20 was prepared using Method 2, working with PE03 in its solid form. [0146] Both the second and third methods are suitable to prepare the present granulated foam control composition, as evidenced by the suitable performances.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Detergent Compositions (AREA)

Abstract

La présente invention concerne une composition de contrôle de mousse granulée comprenant un fluide hydrophobe, une charge hydrophobe, un support insoluble dans l'eau, un polyéthylène glycol d'un poids moléculaire dans la plage de 100 000 à 10 000 000, et éventuellement un liant. Une résine de silicone, un liant, un tensioactif ou un plastifiant peuvent également être présents dans la composition. L'invention concerne en outre des procédés de préparation des compositions de contrôle de mousse granulée. L'invention concerne également une composition détergente comprenant la composition de contrôle de mousse granulée.
PCT/US2018/034035 2017-06-26 2018-05-23 Compositions de contrôle de mousse Ceased WO2019005336A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1710172.6A GB201710172D0 (en) 2017-06-26 2017-06-26 Foam control compositions
GB1710172.6 2017-06-26

Publications (1)

Publication Number Publication Date
WO2019005336A1 true WO2019005336A1 (fr) 2019-01-03

Family

ID=59523540

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2018/034035 Ceased WO2019005336A1 (fr) 2017-06-26 2018-05-23 Compositions de contrôle de mousse

Country Status (2)

Country Link
GB (1) GB201710172D0 (fr)
WO (1) WO2019005336A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115138105A (zh) * 2022-08-03 2022-10-04 合肥新万成环保科技有限公司 一种用于防水涂料的新型聚合物消泡剂及其制备方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4652392A (en) * 1985-07-30 1987-03-24 The Procter & Gamble Company Controlled sudsing detergent compositions
US5668101A (en) * 1993-07-29 1997-09-16 Dow Corning S. A. Particulate foam control agents and their use
JPH10306296A (ja) * 1997-05-02 1998-11-17 Lion Corp 粒状消泡剤組成物および粒状洗剤組成物

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4652392A (en) * 1985-07-30 1987-03-24 The Procter & Gamble Company Controlled sudsing detergent compositions
US5668101A (en) * 1993-07-29 1997-09-16 Dow Corning S. A. Particulate foam control agents and their use
JPH10306296A (ja) * 1997-05-02 1998-11-17 Lion Corp 粒状消泡剤組成物および粒状洗剤組成物

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115138105A (zh) * 2022-08-03 2022-10-04 合肥新万成环保科技有限公司 一种用于防水涂料的新型聚合物消泡剂及其制备方法
CN115138105B (zh) * 2022-08-03 2024-04-23 合肥新万成环保科技有限公司 一种用于防水涂料的新型聚合物消泡剂及其制备方法

Also Published As

Publication number Publication date
GB201710172D0 (en) 2017-08-09

Similar Documents

Publication Publication Date Title
EP2814927B1 (fr) Agent antimousse granulé pour le cycle de rinçage, contenant de la cire de siloxane
EP2675881B1 (fr) Composition de régulation de mousse
RU2547257C2 (ru) Моющие средства для стирки
RU2602235C2 (ru) Моющие средства для стирки белья
CN106232791B (zh) 包含烷氧基化的聚亚烷基亚胺、有机改性的硅氧烷和基于硅氧烷的稀释剂的清洁组合物
EP3033160B1 (fr) Procédé de formation d'un granule antimousse
CN101258232B (zh) 用于释放有机硅成分的输送体系
CN106795461A (zh) 包含富集aes的表面活性剂体系中的阳离子聚合物的清洁组合物
CN104023705B (zh) 可自乳化的聚烯烃组合物
WO2019005336A1 (fr) Compositions de contrôle de mousse
KR20150028235A (ko) 과립화된 거품 제어 조성물
WO2015132207A1 (fr) Agents regulateurs de mousse

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18769854

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18769854

Country of ref document: EP

Kind code of ref document: A1