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WO2025240281A1 - Article en dose unitaire - Google Patents

Article en dose unitaire

Info

Publication number
WO2025240281A1
WO2025240281A1 PCT/US2025/028816 US2025028816W WO2025240281A1 WO 2025240281 A1 WO2025240281 A1 WO 2025240281A1 US 2025028816 W US2025028816 W US 2025028816W WO 2025240281 A1 WO2025240281 A1 WO 2025240281A1
Authority
WO
WIPO (PCT)
Prior art keywords
polymer
water
polyvinyl alcohol
unit dose
less
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.)
Pending
Application number
PCT/US2025/028816
Other languages
English (en)
Inventor
Francesc Corominas
Florence Catherine Courchay
Karel Jozef Maria Depoot
Robby Renilde François KEULEERS
Shigeng Li
Neda Sanatkaran
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.)
Procter and Gamble Co
Original Assignee
Procter and Gamble Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Procter and Gamble Co filed Critical Procter and Gamble Co
Publication of WO2025240281A1 publication Critical patent/WO2025240281A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • C11D3/37—Polymers
    • C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/3753—Polyvinylalcohol; Ethers or esters 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
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/04—Detergent materials or soaps characterised by their shape or physical properties combined with or containing other objects
    • C11D17/041—Compositions releasably affixed on a substrate or incorporated into a dispensing means
    • C11D17/042—Water soluble or water disintegrable containers or substrates containing cleaning compositions or additives for cleaning compositions

Definitions

  • Unit dose article comprising a detergent composition enclosed by a water-soluble film.
  • Water-soluble unit dose detergent articles have become very popular for use in automatic dishwashing and laundry, in particular articles made from a water-soluble film comprising polyvinyl alcohol.
  • the film envelops the detergent.
  • the water-soluble unit-dose detergent article is added to water and the film dissolves releasing the detergent.
  • the object of the present invention is to provide a unit-dose detergent article with improved dissolution. It is another object of the present invention to provide a unit-dose detergent article with improved dissolution in short and cold washing programs.
  • a water-soluble unit dose article comprising a water-soluble film and at least one detergent composition.
  • the detergent composition is encapsulated within a compartment formed by the water-soluble film; the water-soluble film comprises polyvinyl alcohol polymer and wherein the polyvinyl alcohol polymer comprises: an anionic polyvinyl alcohol copolymer or a polyvinyl alcohol homopolymer or a blend of polyvinyl alcohol homopolymers or a blend of an anionic polyvinyl alcohol copolymer and a polyvinyl alcohol homopolymer or a blend of anionic polyvinyl alcohol copolymers; the detergent composition comprises a non-soap surfactant system; and wherein an aqueous solution comprising the water-soluble film and the detergent composition dissolved therein has a gelling factor G of less than 1.25, preferably less than 1.2 and more preferably less than 1.15, wherein
  • G’ is the "storage” or "elastic” modulus
  • G is the "loss" or "plastic” modulus; wherein the aqueous solution is prepared and G’ and G” are measured as described below.
  • Unit dose articles according to the invention present very good dissolution profile, even at low temperature and in short and/or low water laundry cycles.
  • the non-soap surfactant system comprises anionic non-soap surfactant and nonionic surfactant.
  • the detergent composition is a liquid detergent composition.
  • the composition comprises organic solvent; and from 5% to 25% by weight of the composition of water.
  • FIG. l is a water-soluble unit dose article according to the present invention.
  • FIG. 2 depicts the set up to measure the gelling factor G.
  • the present invention discloses a water-soluble unit dose article comprising a water-soluble film and a detergent composition, preferably a laundry detergent composition.
  • a detergent composition preferably a laundry detergent composition.
  • the water-soluble film and the laundry detergent composition are described in more detail below.
  • the laundry detergent composition preferably is a liquid laundry detergent composition.
  • the water-soluble unit dose detergent article comprises the water-soluble film shaped such that the unit-dose article comprises at least one internal compartment surrounded by the water- soluble film.
  • the unit dose article may comprise a first water-soluble film and a second water- soluble film sealed to one another such to define the internal compartment.
  • the water-soluble unit dose article is constructed such that the detergent composition does not leak out of the compartment during storage. However, upon addition of the water-soluble unit dose article to water, the water- soluble film dissolves and releases the contents of the internal compartment into the wash liquor.
  • the compartment should be understood as meaning a closed internal space within the unit dose article, which holds the detergent composition.
  • a first water-soluble film may be shaped to comprise an open compartment into which the detergent composition is added.
  • a second water-soluble film is then laid over the first film in such an orientation as to close the opening of the compartment. The first and second films are then sealed together along a seal region.
  • the unit dose article may comprise more than one compartment, even at least two compartments, or even at least three compartments, or even at least four compartments.
  • the compartments may be arranged in superposed orientation, i.e. one positioned on top of the other. In such an orientation the unit dose article will comprise at least three films, top, one or more middle, and bottom.
  • the compartments may be positioned in a side-by-side orientation, i.e. one orientated next to the other.
  • the compartments may even be orientated in a ‘tyre and rim’ arrangement, i.e. a first compartment is positioned next to a second compartment, but the first compartment at least partially surrounds the second compartment but does not completely enclose the second compartment.
  • one compartment may be completely enclosed within another compartment.
  • the unit dose article comprises at least two compartments, one of the compartments may be smaller than the other compartment.
  • the unit dose article comprises at least three compartments, two of the compartments may be smaller than the third compartment, and preferably the smaller compartments are superposed on the larger compartment.
  • the superposed compartments preferably are orientated side-by-side.
  • the unit dose article may comprise at least four compartments, three of the compartments may be smaller than the fourth compartment, and preferably the smaller compartments are superposed on the larger compartment.
  • the superposed compartments preferably are orientated side-by-side.
  • the detergent composition according to the present invention may be comprised in at least one of the compartments. It may for example be comprised in just one compartment, or may be comprised in two compartments, or even in three compartments, or even in four compartments.
  • Each compartment may comprise the same or different compositions.
  • the different compositions could all be in the same form, or they may be in different forms.
  • the water-soluble unit dose article may comprise at least two internal compartments, wherein the laundry detergent composition is comprised in at least one of the compartments, preferably wherein the unit dose article comprises at least three compartments, wherein the detergent composition is comprised in at least one of the compartments.
  • the water-soluble unit dose article may comprise from 1 gram up to 60 gram, preferably from 5 gram up to 50 gram, more preferably from 10 gram up to 40 gram, most preferably from 12 gram up to 25 gram alternatively from 30 gram to 40 gram of the laundry detergent composition.
  • the water-soluble unit dose article may comprise from 1 ml up to 60 ml, preferably from 5 ml up to 50 ml, more preferably from 10 ml up to 40 ml, most preferably from 12 ml up to 25 ml, alternatively from 30 ml to 40ml of the liquid laundry detergent composition.
  • the film of the present invention is soluble or dispersible in water.
  • the water-soluble film preferably has a thickness of from 20 to 150 micron, preferably 35 to 125 micron, even more preferably 50 to 110 micron, most preferably about 76 micron.
  • the water-soluble film material may be obtained by casting, blow-moulding, extrusion or blown extrusion of the polymeric material, as known in the art, preferably the water-soluble film is obtained by solvent casting.
  • the water-soluble film comprises polyvinylalcohol.
  • the polyvinylalcohol may be present between 50% and 95%, preferably between 55% and 90%, more preferably between 60% and 80% by weight of the water-soluble film.
  • the polyvinylalcohol preferably comprises polyvinyl alcohol homopolymer, polyvinylalcohol copolymer, or a mixture thereof.
  • the water-soluble film comprises a blend of polyvinylalcohol homopolymers and/or anionic polyvinylalcohol copolymers, preferably wherein the polyvinylalcohol copolymers are selected from sulphonated and carboxylated anionic polyvinylalcohol copolymers especially carboxylated anionic polyvinylalcohol copolymers.
  • the water-soluble film comprises a blend of a polyvinylalcohol homopolymer and a carboxylated anionic polyvinylalcohol copolymer, or a blend of polyvinylalcohol homopolymers.
  • the polyvinylalcohol comprises an anionic polyvinyl alcohol copolymer, most preferably a carboxylated anionic polyvinylalcohol copolymer.
  • the polyvinylalcohol in the water-soluble film is a blend of a polyvinylalcohol homopolymer and a carboxylated anionic polyvinylalcohol copolymer, the homopolymer and the anionic copolymer are present in a relative weight ratio of 90/10 to 10/90.
  • the term “homopolymer” generally includes polymers having a single type of monomeric repeating unit (e.g., a polymeric chain comprising or consisting of a single monomeric repeating unit).
  • the term “homopolymer” further includes copolymers having a distribution of vinyl alcohol monomer units and optionally vinyl acetate monomer units, depending on the degree of hydrolysis (e.g., a polymeric chain comprising or consisting of vinyl alcohol and vinyl acetate monomer units). In the case of 100% hydrolysis, a polyvinylalcohol homopolymer can include only vinyl alcohol units.
  • copolymer generally includes polymers having two or more types of monomeric repeating units (e.g., a polymeric chain comprising or consisting of two or more different monomeric repeating units, whether as random copolymers, block copolymers, etc.).
  • copolymer further includes copolymers having a distribution of vinyl alcohol monomer units and vinyl acetate monomer units, depending on the degree of hydrolysis, as well as at least one other type of monomeric repeating unit (e.g., a ter- (or higher) polymeric chain comprising or consisting of vinyl alcohol monomer units, vinyl acetate monomer units, and one or more other monomer units, for example anionic monomer units).
  • a polyvinylalcohol copolymer can include a copolymer having vinyl alcohol units and one or more other monomer units, but no vinyl acetate units.
  • anionic copolymer includes copolymers having an anionic monomer unit comprising an anionic moiety.
  • General classes of anionic monomer units which can be used for the anionic polyvinyl alcohol co-polymer include the vinyl polymerization units corresponding to monocarboxylic acid vinyl monomers, their esters and anhydrides, dicarboxylic monomers having a polymerizable double bond, their esters and anhydrides, vinyl sulfonic acid monomers, and alkali metal salts of any of the foregoing, preferably monocarboxylic acid vinyl monomers, their esters and anhydrides, dicarboxylic monomers having a polymerizable double bond, their esters and anhydrides, and alkali metal salts of any of the foregoing, most preferably dicarboxylic monomers having a polymerizable double bond, their esters and anhydrides, and alkali metal salts of any of the foregoing.
  • Suitable anionic monomer units include the vinyl polymerization units corresponding to vinyl anionic monomers including vinyl acetate, maleate, monoalkyl maleate, dialkyl maleate, monomethyl maleate, dimethyl maleate, maleic anyhydride, fumarate, monoalkyl fumarate, dialkyl fumarate, monomethyl fumarate, dimethyl fumarate, fumaric anyhydride, itaconate, monoalkyl itaconate, dialkyl itaconate, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinyl sulfonate, allyl sulfonate, ethylene sulfonate, 2-acrylamido-l -methylpropanesulfonate, 2-acrylamido-2- methylpropanesulfonate, 2-methylacrylamido-2-methylpropanesulfonate, 2-sufoethyl acrylate, alkali metal salts of the foregoing (e.g., sodium, potassium
  • the anionic monomer may be one or more acrylamido methylpropanesulfonate (e.g., 2-acrylamido-l- methylpropanesulfonate, 2-acrylamido-2-methylpropanesulfonate, 2-methylacrylamido-2- m ethylpropanesulfonate), alkali metal salts thereof (e.g., sodium salts), and combinations thereof.
  • acrylamido methylpropanesulfonate e.g., 2-acrylamido-l- methylpropanesulfonate, 2-acrylamido-2-methylpropanesulfonate, 2-methylacrylamido-2- m ethylpropanesulfonate
  • alkali metal salts thereof e.g., sodium salts
  • the anionic moiety of the first anionic monomer unit is selected from a sulphonate, a carboxylate, or a mixture thereof, more preferably a carboxylate, even more preferably a monocarboxylate, a di carb oxy late, or a mixture thereof, most preferably, an acrylate, a methacrylate, a maleate, an itaconate, or a mixture thereof.
  • the anionic monomer unit is present in the anionic polyvinyl alcohol copolymer in an average amount in a range of between 0.5 mol.% and 10 mol.%, preferably between 1 mol.% and 5 mol.%.
  • the polyvinyl alcohol, and/or in case of polyvinylalcohol blends the individual polyvinylalcohol polymers have an average viscosity in a range of between 4 cP and 30 cP, preferably between 5 cP and 20 cP, most preferably between 5 cP and 15 cP measured as a 4% polyvinyl alcohol copolymer solution in demineralized water at 20 degrees C.
  • the viscosity of a polyvinyl alcohol polymer is determined by measuring a freshly made solution using a Brookfield LV type viscometer with UL adapter as described in British Standard EN ISO 15023-2:2006 Annex E Brookfield Test method.
  • the viscosity of 4% aqueous polyvinyl alcohol solutions is correlated with the weight-average molecular weight of the same polymer, and often the viscosity is used as a proxy for weight-average molecular weight.
  • the weight-average molecular weight of the polyvinylalcohol can be in a range of 30,000 to 175,000, or 30,000 to 100,000, or 55,000 to 80,000.
  • the polyvinyl alcohol, and/or in case of polyvinylalcohol blends the individual polyvinylalcohol polymers have an average degree of hydrolysis in a range of between 60% and 99%, preferably between 65% and 90%, most preferably between 70% and 80%.
  • a suitable test method to measure the degree of hydrolysis is as according to standard method JIS K6726.
  • water-soluble polymeric resin related composition elements impacting the gelling factor include the average degree of hydrolysis of the individual polyvinyl alcohol polymers and of the eventual blend, the viscosity of the individual polyvinyl alcohol polymers and of the eventual blend, as well as the relative ratio between the individual polyvinyl alcohol polymers in the case of a blend.
  • the type and average degree of anionic substitution will also impact.
  • a lower average degree of hydrolysis is thought to help gelling prevention due to a lower affinity to water hydration in view of the lower relative alcohol functional groups content, resulting in limiting viscosity increases in presence of detergent juice including surfactants accordingly.
  • an average degree of hydrolysis of between 70% and 80% is most preferred to prevent strong gel formation.
  • a lower viscosity indicating a lower molecular weight polymer is thought to improve gelling prevention due to a lower degree of polymer entanglement to be expected. As such an average viscosity of between 3 cP and 20 cP or even between 5 cP and 15 cP is most preferred to prevent strong gel formation. Presence of anionic modification is thought to help gelling prevention through an increased sterical hindrance impact, favouring chain disentanglement and decreased polymer-surfactant interaction accordingly.
  • a preferred type of anionic modification to prevent gel formation are dicarboxylates, preferably itaconates. A too high anionic content however is equally to be avoided as it is thought to again promote gel formation through a higher degree of hydration water binding.
  • an average degree of anionic modification of between 1% and 3% is most preferred to prevent strong gel formation.
  • a combination of polymers is regularly chosen by a water-soluble film formulator to balance amongst others mechanical properties, strength, dissolution and sealability. While gel promoting polymers following above hypotheses may be preferred to deliver against one or more of these highlighted film properties, careful attention needs to be taken to its relative content in the overall water-soluble polymer in order to prevent formation of strong gels upon initial contact with the dissolving water and detergent composition.
  • water-soluble polymeric resin related composition elements impacting the gelling factor include the average degree of hydrolysis of the individual polyvinyl alcohol polymers and of the eventual blend, the viscosity of the individual polyvinyl alcohol polymers and of the eventual blend, as well as the relative ratio between the individual polyvinyl alcohol polymers in the case of a blend.
  • the type and average degree of anionic substitution will also impact the gelling factor. As interfacial water is displaced from the polyvinyl alcohol polymer solution that is formed upon film dissolution towards the detergent composition, this creates an increase in polyvinyl alcohol concentration until formation of a hydrogel, which is the equivalent of highly entangled polyvinyl alcohol polymer chains.
  • Hydroxyl groups in polyvinyl alcohol polymer chains can form hydrogen bonds with neighboring polymer chains, leading to intermolecular interaction and the formation of entanglements, which translates into an increase in viscosity.
  • a lower average degree of hydrolysis is known to reduce this hydrogen bonding and results in a lower degree of chain entanglements in solution and a lower viscosity, which is thought to help gelling prevention as it will limit viscosity increases in presence of detergent composition including surfactants accordingly.
  • an average degree of hydrolysis of between 70% and 80% is preferred to prevent strong gel formation.
  • a lower viscosity indicating a lower molecular weight polymer is thought to improve gelling prevention due to a lower degree of polymer entanglement to be expected.
  • an average viscosity of between 3 cP and 20 cP or even between 5 cP and 15 cP is preferred to prevent strong gel formation.
  • Limited presence of anionic modification is thought to help gelling prevention through an increased sterical hindrance impact, limiting intermolecular chain interaction, and therefore favouring chain disentanglement and decreased polymer-surfactant interaction accordingly.
  • a preferred type of anionic modification to prevent gel formation are dicarboxylates, preferably itaconates.
  • a too high anionic content in the polyvinyl alcohol polymers however is equally to be avoided as it is thought to again promote gel formation through potential polymer chains with the detergent juice containing surfactants, through ionic interaction.
  • a first polyvinyl alcohol polymer blend comprises: i) from 1% to 30%, preferably from 5% to 25%, more preferably from 10% to 20% by weight of the polymer blend of polymer A, wherein polymer A comprises an anionic monomer unit, a vinyl alcohol monomer unit and a vinyl acetate monomer unit, wherein polymer A has an average degree of hydrolysis of from 60% to less than 80%, preferably of from 70% to less than 80%, more preferably of from 75% to less than 80%; and a 4% solution viscosity at 20°C of from 3 cP to 20 cP, preferably from 3 cP to 15 cP, more preferably of from 3 cP to 10 cP; an anionic monomer unit comprising a monomer derived from the group consisting of itaconic acid, monoalkyl itaconate, dialkyl itaconate, itaconic anhydride, and mixtures thereof; from 0.1 mol% to 4.0 mol%, preferably of from 0.5
  • the difference in the average degree of hydrolysis between polymer A and polymer B is at most 10%, preferably at most 5%, more preferably between 1% and 3%.
  • the difference of the 4% solution viscosity at 20°C between polymer A and polymer B is from IcP to 20 cP, preferably from 3 cP to 15cP and more preferably from 5 cP to 12 cP.
  • the polymer blend has a biodegradation rate of at least 60%, preferably at least 65%, more preferably at least 70%, after 60 days, or at least 60%, preferably at least 65%, more preferably at least 70%, after 28 days according to OECD 301B testing.
  • the polymer blend meets the OECD 301B biodegradability requirements.
  • Polymer A comprises an anionic monomer unit, a vinyl alcohol monomer unit and a vinyl acetate monomer unit.
  • the anionic monomer unit comprises a monomer derived from the group consisting of itaconic acid, monoalkyl itaconate, dialkyl itaconate, itaconic anhydride, and mixtures thereof, preferably itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, and mixtures thereof, more preferably itaconic acid.
  • Polymer A comprises from 0.1 mol% to 4.0 mol%, preferably of from 0.5 mol% to 3.0 mol%, more preferably from 1.0 mol% to 2.0 mol% of the anionic monomer unit, preferably the anionic monomer unit is itaconic acid.
  • the polyvinyl alcohol blend comprises from 1% to 30%, preferably from 5% to 25%, more preferably from 10% to 20% by weight of the polyvinyl alcohol polymer blend of polymer A.
  • Polymer A has an average degree of hydrolysis of from 60% to less than 80%, preferably of from 70% to less than 80%, more preferably of from 75% to less than 80%; and a 4% solution viscosity at 20°C of from 3 cP to 20 cP, preferably from 3 cP to 15 cP, more preferably of from 3 cP to 10 cP.
  • the polyvinyl alcohol blend comprises from 10% to 20% by weight of the polyvinyl alcohol polymer blend of polymer A.
  • Polymer A comprises an anionic monomer unit derived from itaconic acid, preferably the anionic monomer unit is present from between 1.0 mol% and 2.0 mol%.
  • Polymer A has an average degree of hydrolysis of from 75% to less than 80%.
  • Polymer A has a 4% solution viscosity at 20°C of from 3 cP to 10 cP.
  • the polyvinyl alcohol blend comprises from 10% to 20% by weight of the polymer blend of polymer A and Polymer A has from 1.0 mol% to 2.0 mol% of an anionic monomer unit derived from itaconic acid, an average degree of hydrolysis of from 75% to less than 80% and a 4% solution viscosity at 20°C of from 3 cP to 10 cP.
  • Polymer B consists essentially of a vinyl alcohol monomer unit and a vinyl acetate monomer unit.
  • the polyvinyl alcohol blend comprises from 70% to 99%, preferably from 75% to 95%, more preferably from 80% to 90% by weight of the polyvinyl alcohol polymer blend of polymer B.
  • Polymer B has an average degree of hydrolysis of from 70% to less than 80%, preferably of from 72% to less than 80%, more preferably of from 75% to less than 80%; and a 4% solution viscosity at 20°C of from lOcP to 40cP, preferably from 10 cP to 30 cP, more preferably of from 10 cP to 20 cP.
  • the polyvinyl alcohol blend comprises from 80% to 90% by weight of the polyvinyl alcohol polymer blend of polymer B.
  • Polymer B has an average degree of hydrolysis of from 75% to less than 80%.
  • Polymer B preferably has a 4% solution viscosity at 20°C of from 10 cP to 20 cP.
  • the polyvinyl alcohol blend comprises from 80% to 90% by weight of the polyvinyl alcohol polymer blend of polymer B and polymer B has an average degree of hydrolysis of from 75% to less than 80% and has a 4% solution viscosity at 20°C of from 10 cP to 20 cP.
  • Second polyvinyl alcohol polymer blend suitable for use in current application is:
  • the second polyvinyl alcohol polymer blend comprises two polyvinyl alcohol polymers, polymer A and polymer B. Both polymer A and polymer B consist essentially of a vinyl alcohol monomer unit and a vinyl acetate monomer unit.
  • the polyvinyl alcohol polymer blend comprises: i) from 1% to 50%, preferably from 5% to 30%, more preferably from 10% to 20% by weight of the polymer blend of polymer A, wherein polymer A has an average degree of hydrolysis of from 60% to less than 75%, preferably of from 65% to less than 75%, more preferably of from 70% to less than 75%; and a 4% solution viscosity at 20°C of from 3 cP to 20 cP, preferably from 3 cP to 15 cP, more preferably of from 3 cP to 10 cP; and ii) from 50% to 99%, preferably from 70% to 95%, more preferably from 80% to 90% by weight of the polymer blend of polymer B, wherein polymer B has an average degree
  • the difference in the average degree of hydrolysis between polymer A and polymer B is at most 10%, preferably at most 8.5%, more preferably between 1% and 7%.
  • the difference of the 4% solution viscosity at 20°C between polymer A and polymer B is from 1 cP to 20 cP, preferably from 3 cP to 15 cP and more preferably from 5 cP to 12 cP.
  • the polymer blend has a biodegradation rate of at least 60%, preferably at least 65%, more preferably at least 70%, after 60 days, or at least 60%, preferably at least 65%, more preferably at least 70%, after 28 days according to OECD 301B testing.
  • the polymer blend meets the OECD 301B biodegradability requirements.
  • Polymer A consists essentially of a vinyl alcohol monomer unit and a vinyl acetate monomer unit.
  • the polyvinyl alcohol polymer blend comprises from 1% to 50%, preferably from 5% to 30%, more preferably from 10% to 20% by weight of the polymer blend of polymer A.
  • Polymer A has: i) an average degree of hydrolysis of from 60% to less than 75%, preferably of from 65% to less than 75%, more preferably of from 70% to less than 75%; and ii) a 4% solution viscosity at 20°C of from 3 cP to 20 cP, preferably from 3 cP to 15 cP, more preferably of from 3 cP to 10 cP.
  • the blend comprises from 10% to 20% by weight of the polymer blend of polymer A.
  • Polymer A has an average degree of hydrolysis of from 70% to less than 75%.
  • Polymer A preferably has a 4% solution viscosity at 20°C of from 3 cP to 10 cP.
  • the blend comprises from 10% to 20% by weight of the polymer blend of polymer A and polymer A has an average degree of hydrolysis of from 70% to less than 75% and has a 4% solution viscosity at 20°C of from 3cP to 10 cP.
  • Polymer B consists essentially of a vinyl alcohol monomer unit and a vinyl acetate monomer unit.
  • the blend comprises from 50% to 99%, preferably from 70% to 95%, more preferably from 80% to 90% by weight of the polymer blend of polymer B.
  • Polymer B has an average degree of hydrolysis of from 60% to less than 80%, preferably of from 70% to less than 80%, more preferably of from 75% to less than 80%; and a 4% solution viscosity at 20°C of from 10 cP to 40 cP, preferably from 10 cP to 30 cP, more preferably of from 10 cP to 20 cP.
  • the blend comprises from 80% to 90% by weight of the polymer blend of polymer B.
  • Polymer B has an average degree of hydrolysis of from 75% to less than 80%.
  • Polymer B preferably has a 4% solution viscosity at 20°C of from 10 cP to 20 cP.
  • the blend comprises from 80% to 90% by weight of the polymer blend of polymer B and polymer B has an average degree of hydrolysis of from 75% to less than 80% and has a 4% solution viscosity at 20°C of from 10 cP to 20 cP.
  • the water-soluble film comprises a non-aqueous plasticizer.
  • the non-aqueous plasticizer is selected from polyols, sugar alcohols, and mixtures thereof.
  • Suitable polyols include polyols selected from the group consisting of glycerol, diglycerin, ethylene glycol, diethylene glycol, triethyleneglycol, tetraethylene glycol, polyethylene glycols up to 400 molecular weight, neopentyl glycol, 1,2-propylene glycol, 1,3-propanediol, dipropylene glycol, polypropylene glycol, 2-methyl-l,3-propanediol, trimethylolpropane and polyether polyols, or a mixture thereof.
  • Suitable sugar alcohols include sugar alcohols selected from the group consisting of isomalt, maltitol, sorbitol, xylitol, erythritol, adonitol, dulcitol, pentaerythritol and mannitol, or a mixture thereof.
  • the non-aqueous plasticizer is selected from glycerol, 1,2- propanediol, dipropylene glycol, 2-methyl- 1,3 -propanediol, trimethylolpropane, tri ethyleneglycol, polyethyleneglycol, sorbitol, or a mixture thereof, most preferably selected from glycerol, sorbitol, trimethylolpropane, dipropylene glycol, and mixtures thereof.
  • One particularly suitable plasticizer system includes a blend of glycerol, sorbitol and trimethylol propane.
  • Another particularly suitable plasticizer system includes a blend of glycerin, dipropylene glycol, and sorbitol.
  • the film comprises between 5% and 50%, preferably between 10% and 40%, more preferably between 20% and 30% by weight of the film of the non-aqueous plasticizer.
  • a plasticizer system inside the water-soluble film is believed to help preventing gelling upon initial dissolution of the polymeric resin of the water-soluble film in presence of the surfactant system of the detergent composition through acting as a dissolution aid behind its solvency properties.
  • the water-soluble film comprises a surfactant.
  • the water-soluble film comprises a surfactant in an amount between 0.1% and 2.5%, preferably between 1% and 2% by weight of the water-soluble film.
  • Suitable surfactants can include the nonionic, cationic, anionic and zwitterionic classes.
  • Suitable surfactants include, but are not limited to, polyoxyethylenated polyoxypropylene glycols, alcohol ethoxylates, alkylphenol ethoxylates, tertiary acetylenic glycols and alkanolamides (nonionics), polyoxyethylenated amines, quaternary ammonium salts and quatemized polyoxyethylenated amines (cationics), and amine oxides, N-alkylbetaines and sulfobetaines (zwitterionics).
  • Suitable surfactants include dioctyl sodium sulfosuccinate, lactylated fatty acid esters of glycerol and propylene glycol, lactylic esters of fatty acids, sodium alkyl sulfates, polysorbate 20, polysorbate 60, polysorbate 65, polysorbate 80, lecithin, acetylated fatty acid esters of glycerol and propylene glycol, and acetylated esters of fatty acids, and combinations thereof.
  • the water-soluble film according to the invention comprises lubricants / release agents.
  • Suitable lubricants/release agents can include, but are not limited to, fatty acids and their salts, fatty alcohols, fatty esters, fatty amines, fatty amine acetates and fatty amides.
  • Preferred lubricants/release agents are fatty acids, fatty acid salts, and fatty amine acetates.
  • the amount of lubricant/release agent in the water-soluble film is in a range of from 0.02% to 1.5%, preferably from 0.1% to 1% by weight of the water-soluble film.
  • the water-soluble film comprises fillers, extenders, antiblocking agents, detackifying agents or a mixture thereof.
  • suitable fillers, extenders, antiblocking agents, detackifying agents or a mixture thereof include, but are not limited to, starches, modified starches, crosslinked polyvinylpyrrolidone, crosslinked cellulose, microcrystalline cellulose, silica, metallic oxides, calcium carbonate, talc and mica.
  • Preferred materials are starches, modified starches and silica.
  • the amount of filler, extender, antiblocking agent, detackifying agent or mixture thereof in the water-soluble film is in a range of from 0.1% to 25%, preferably from 1% to 10%, more preferably from 2% to 8%, most preferably from 3% to 5% by weight of the water-soluble film.
  • one preferred range for a suitable filler, extender, antiblocking agent, detackifying agent or mixture thereof is from 0.1% to 1%, preferably 4%, more preferably 6%, even more preferably from 1% to 4%, most preferably from 1% to 2.5%, by weight of the water- soluble film.
  • the water-soluble film according to the invention has a residual moisture content of at least 4%, more preferably in a range of from 4% to 15%, even more preferably of from 5% to 10% by weight of the water-soluble film as measured by Karl Fischer titration.
  • a residual moisture content of at least 4%, more preferably in a range of from 4% to 15%, even more preferably of from 5% to 10% by weight of the water-soluble film as measured by Karl Fischer titration.
  • Preferred films exhibit good dissolution in cold water, meaning unheated distilled water.
  • the film may be opaque, transparent or translucent.
  • the film may comprise a printed area.
  • the area of print may face an internal compartment of the unit dose article, or may face the outside environment, or both, preferably the area of print faces an internal compartment of the unit dose article.
  • Preferred inks used for printing the articles of the invention include red, white and black pigments, for example, red: Pigment Red 254, white: titanium dioxide and black: lampblack or carbon black (pigment black 6).
  • the area of print may be achieved using standard techniques, such as flexographic printing or inkjet printing.
  • the film may comprise an aversive agent, for example a bittering agent.
  • Suitable bittering agents include, but are not limited to, naringin, sucrose octaacetate, quinine hydrochloride, denatonium benzoate, or mixtures thereof.
  • Any suitable level of aversive agent may be used in the film. Suitable levels include, but are not limited to, 1 to 5000ppm, or even 100 to 2500ppm, or even 250 to 2000rpm.
  • the water-soluble film or water-soluble unit dose article or both are coated with a lubricating agent, preferably, wherein the lubricating agent is selected from talc, zinc oxide, silicas, siloxanes, zeolites, silicic acid, alumina, sodium sulphate, potassium sulphate, calcium carbonate, magnesium carbonate, sodium citrate, sodium tripolyphosphate, potassium citrate, potassium tripolyphosphate, calcium stearate, zinc stearate, magnesium stearate, starch, modified starches, clay, kaolin, gypsum, cyclodextrins or mixtures thereof.
  • the lubricating agent is selected from talc, zinc oxide, silicas, siloxanes, zeolites, silicic acid, alumina, sodium sulphate, potassium sulphate, calcium carbonate, magnesium carbonate, sodium citrate, sodium tripolyphosphate, potassium citrate, potassium tripolyphosphate, calcium stearate, zinc stea
  • the detergent composition may be a laundry detergent composition, an automatic dishwashing composition or a hard surface cleaning composition.
  • the detergent composition is a laundry detergent composition.
  • a laundry detergent composition can be used in a fabric hand wash operation or more preferably may be used in an automatic machine fabric wash operation, for example in an automatic machine fabric wash operation.
  • the detergent composition may comprise a solid, a liquid or a mixture thereof.
  • the term liquid includes a gel, a solution, a dispersion, a paste, or a mixture thereof.
  • the solid may be a powder.
  • powder we herein mean that the detergent composition may comprise solid particulates or may be a single homogenous solid.
  • the powder detergent composition comprises particles. This means that the powder detergent composition comprises individual solid particles as opposed to the solid being a single homogenous solid. The particles may be free-flowing or may be compacted.
  • the laundry detergent is a liquid detergent composition.
  • a liquid composition is believed to diffuse faster into the wash solution upon initial rupture of the water-soluble film, reducing the time spent, hence degree of gel formation through interaction with the dissolved water-soluble film polymeric resin, at the detergent - film - wash water interface accordingly.
  • Example laundry detergent compositions comprise a non-soap surfactant, wherein the nonsoap surfactant preferably comprises an anionic non-soap surfactant and a non-ionic surfactant.
  • the laundry detergent composition comprises between 10% and 60%, or between 15% and 55%, or between 20% and 45%, or alternative combinations thereof, by weight of the laundry detergent composition of the non-soap surfactant.
  • lower non-soap surfactant levels are preferred in order to reduce surfactant - water-soluble polymeric resin interaction at the detergent-film-wash water interface upon initial rupture of the water-soluble film.
  • Example non-soap anionic surfactants comprises linear alkylbenzene sulphonate, alkyl sulphate anionic surfactant, or a mixture thereof.
  • Example linear alkylbenzene sulphonates are C10-C16 alkyl benzene sulfonic acids, or C11-C14 alkyl benzene sulfonic acids.
  • linear we herein mean the alkyl group is linear.
  • Example alkyl sulphate anionic surfactant may comprise alkoxylated alkyl sulphate or non- alkoxy lated alkyl sulphate or a mixture thereof.
  • Example alkoxylated alkyl sulphate anionic surfactant comprises an ethoxylated alkyl sulphate anionic surfactant.
  • Example alkyl sulphate anionic surfactant may comprise an ethoxylated alkyl sulphate anionic surfactant with a mol average degree of ethoxylation from 1 to 5, from 1 to 3, or from 2 to 3.
  • Example alkyl sulphate anionic surfactant may comprise a nonethoxylated alkyl sulphate and an ethoxylated alkyl sulphate wherein the mol average degree of ethoxylation of the alkyl sulphate anionic surfactant is from 1 to 5, from 1 to 3, or from 2 to 3.
  • Example alkyl fraction of the alkyl sulphate anionic surfactant are derived from fatty alcohols, oxo-synthesized alcohols, Guerbet alcohols, or mixtures thereof.
  • the non-ionic surfactant is selected from fatty alcohol alkoxylate, an oxo-synthesised alcohol alkoxylate, Guerbet alcohol alkoxylates, alkyl phenol alcohol alkoxylates, or a mixture thereof.
  • the laundry detergent composition comprises between 1% and 20%, between 1.5% and 15%, between 2% and 10%, or between 2.5% and 8% by weight of the laundry detergent composition of soap, in some examples a fatty acid salt, in some examples an amine neutralized fatty acid salt, wherein in some examples the amine is an alkanolamine for example selected from monoethanolamine, diethanolamine, triethanolamine or a mixture thereof, in some examples monoethanolamine.
  • a fatty acid salt in some examples an amine neutralized fatty acid salt
  • the amine is an alkanolamine for example selected from monoethanolamine, diethanolamine, triethanolamine or a mixture thereof, in some examples monoethanolamine.
  • higher levels of fatty acid are less preferred as they are found to thicken detergent viscosity upon initial contact with incoming wash water, slowing down product diffusion into the wash water hence enabling more time for surfactant - water-soluble polymeric resin interaction accordingly.
  • a minimal level of fatty acid however may be required to protect the overall surfactant system from water hardness in the
  • the laundry detergent composition is a liquid laundry detergent composition.
  • the liquid laundry detergent composition comprises not more than 25% of water, preferably less than 15%, or even less than 12%, and more preferably more than 5%, by weight of the liquid laundry detergent composition of water.
  • higher levels of detergent water are to be avoided as these may start preliminary dissolving the water-soluble polymeric resin at the inner side of the water-soluble film facing the detergent composition, inducing preliminary gel formation already within the detergent composition prior to exposure of the unit dose article to the wash water accordingly, while having some water can help facilitating initial dissolution and as such faster diffusion of detergent surfactant actives, reducing time to interact and as such formation of gels with dissolved polymeric resin accordingly.
  • the laundry detergent composition is a liquid laundry detergent composition comprising a non-aqueous solvent selected from 1,2-propanediol, dipropylene glycol, tripropyleneglycol, glycerol, sorbitol, polyethylene glycol, or a mixture thereof.
  • a non-aqueous solvent selected from 1,2-propanediol, dipropylene glycol, tripropyleneglycol, glycerol, sorbitol, polyethylene glycol, or a mixture thereof.
  • Polyol based organic solvents are especially preferred for use in the present invention.
  • the liquid laundry detergent composition comprises between 10% and 40%, or between 15% and 30% by weight of the liquid laundry detergent composition of the non-aqueous solvent.
  • higher levels of such organic solvents especially polyol solvents can help improving overall surfactant solubility, positively impacting surfactant diffusion kinetics into the wash water accordingly.
  • a too high level of organic solvent however is to be avoided in order not to over-plasticize the water-soluble
  • the laundry detergent composition comprises a perfume.
  • the laundry detergent composition comprises an adjunct ingredient which can be selected from the group comprising builders including citrate, (encapsulated) enzymes including but not limited to proteases, amylases, lipases, cellulases, mannanases, xyloglucanases, DNA’ses, and mixtures thereof, bleach, bleach catalyst, aesthetic dye, hueing dye, brightener, cleaning polymers including alkoxylated polyamines and polyethyleneimines, soil release polymers, fabric conditioning polymers including Polyquatemium 10 (CathEC), further surfactant including amine oxide and solvent, chelants including aminocarboxylate and aminophosphonate chelants, dye transfer inhibitors, encapsulated perfume, polycarboxylates, structurant, pH trimming agents, antioxidants, preservatives, antibacterial agents including Tinosan HP 100, probiotics, and mixtures thereof.
  • builders including citrate, (encapsulated) enzymes including but not limited to proteases, amylases, lipa
  • the laundry detergent composition has a pH between 6 and 10, between 6.5 and 8.9, or between 7 and 8, wherein the pH of the laundry detergent composition is measured as a 10% product concentration in demineralized water at 20°C.
  • a too high or too low finished product pH may negatively impact water-soluble film dissolution kinetics, reducing detergent diffusion kinetics in the wash water and as such allowing more time for surfactant-water-soluble polymeric resin interaction accordingly.
  • the laundry detergent composition may be Newtonian or non-Newtonian.
  • the liquid laundry detergent composition is non-Newtonian.
  • a non-Newtonian liquid has properties that differ from those of a Newtonian liquid, more specifically, the viscosity of non-Newtonian liquids is dependent on shear rate, while a Newtonian liquid has a constant viscosity independent of the applied shear rate. The decreased viscosity upon shear application for non-Newtonian liquids is thought to further facilitate liquid detergent dissolution and as such counter eventual gel formation with the dissolved water-soluble polymeric resin.
  • the liquid laundry detergent composition described herein can have any suitable viscosity depending on factors such as formulated ingredients and purpose of the composition.
  • a further aspect of the present invention is a process of laundering fabrics comprising the steps of diluting between 200 and 3000 fold, preferably between 300 and 2000 fold, the water- soluble unit dose article according to the present invention with water to make a wash liquor, contacting fabrics to be treated with the wash liquor.
  • the wash liquor comprises between 5L and 75L, preferably between 7L and 40L, more preferably between 10L and 20L of water.
  • the wash liquor may comprise between 35L and 65L of water.
  • the wash liquor is at a temperature of between 5°C and 90°C, preferably between 10°C and 60°C, more preferably between 12°C and 45°C, most preferably between 15°C and 40°C.
  • washing the fabrics in the wash liquor takes between 5 minutes and 60 minutes, preferably between 5 minutes and 40 minutes, more preferably between 5 minutes and 30 minutes, even more preferably between 5 minutes and 20 minutes, most preferably between 6 minutes and 18 minutes to complete.
  • washing the fabrics in the wash liquor may take between 30 minutes and 60 minutes.
  • the wash liquor comprises between 1kg and 20 kg, preferably between 3kg and 15kg, most preferably between 5 and 10 kg of fabrics.
  • the wash liquor may comprise water of any hardness preferably varying between 0 gpg to 40gpg.
  • the viscosity measurements are carried out using a rotational rheometer e.g. TA instruments HR10.
  • the instrument includes a 40mm 2° cone fixture with a 52prq gap.
  • the measurement is carried out using a flow procedure that contains a conditioning step, a peak hold and a continuous ramp step.
  • the conditioning step involves the setting of the measurement temperature at 20°C, a pre-shear of 10 seconds at a shear rate of 10s' 1 , and an equilibration of 60 seconds at the selected temperature.
  • the peak hold involves applying a shear rate of 0.05s' 1 at 20°C for 3min with sampling every 10s.
  • the continuous ramp step is performed at a shear rate from 0.1 to 1200s' 1 for 3min at 20°C to obtain the full flow profile.
  • the viscosity value at a shear rate of 20s' 1 is extracted and reported.
  • the gelling factor method measures the strength of the gel formed between the enclosed detergent composition and the polyvinylalcohol comprised in the water-soluble film upon initial dissolution in the wash water. This method is designed to provide a lab characterization (using very low water amounts) of the infrequent or extreme in-home process where gelling can occur. It is used as a proxy to assess when the detergent is released into the washing water. If residues are created during the laundry process these residues can be redissolved but it might imply a further step and the purpose of this invention is to reduce the touches needed by the user during the laundry process.
  • the gelling factor is measured using a plate to plate rotational rheometer (TA Discovery Hybrid Rheometer) using a 60 mm flat spindle.
  • the temperature of the bottom plate is set to 5 °C.
  • An aluminium made cross-based frame (width of each crossbar is 6 mm) is placed on the bottom plate in order to divide the bottom plate in 4 equal quadrants.
  • 1 ml of the detergent composition at room temperature e.g. 20°C +/- 2°C, is respectively added at two opposing quadrants, creating a substantial triangular shape along the respective crossbars of the frame, as shown in FIG 2.
  • 1 ml of a 10wt% solution of dissolved water-soluble film in demineralized water at room temperature e.g.
  • the consequent measurement procedure includes a 30 second temperature conditioning, a peak hold of 180 seconds at 40/s and a gradual oscillatory angular frequency logarithmic sweep (from 100 to 0.016 rad/s within about 38 minutes through a logarithmic sweep at a constant and controlled stress of 0. IPa, to ensure that the gel is always within the linear visco-elastic regime).
  • the storage modulus (G’) and loss modulus (G”) are measured at 5 points per decade, which produces 20 data points in total.
  • the average storage modulus (in Pa) and average loss modulus (in Pa) are calculated of the respective values at 0.040, 0.025 and 0.015 rad/s, e.g. the 3 last data points measured.
  • the gelling factor is consequently calculated through dividing the average storage modulus by the average loss modulus value. It is a dimensionless value. Three measurements were taken and the average is taken as the gelling factor.
  • This test method describes a water-soluble unit dose article dissolution test, in which the amount of undissolved water-soluble film residues is assessed. More particularly, this method is designed to assess the relative dissolution properties of laundry water-soluble unit dose articles under stressed washing machine conditions.
  • Electrolux Programmable Washing machines type W565H comprising a ballast load with a mix of Cotton and Polycotton pieces (from Calderon Textiles, LLC 6131 W 80th Street Indianapolis, IN 46278) were used. Ballast loads are comprised of cotton and polycotton knit, double-ply swatches approximately 50x50cm in size.
  • Orange fabric is purchased from the Lubrizol-Equest company and must be desized before use by adding 25 items into a front loading Miele washing machine and running 1 short cotton cycle at 60°C (approximate duration of lh30) with 50g of Ariel sensitive powder and a water hardness of 15gpg, followed by running 1 more short cotton cycles at 60°C (approximate duration of lh30) with no detergent and a water hardness of 15gpg, followed by tumble drying.
  • the orange fabrics are then cut into 48X48cm pieces, folded in half, cut in half and sawn to the sides into 4 equivalent pouches of 22X22cm with the top side open.
  • 1 test product of a preconditioned water-soluble unit dose article is placed at the bottom right corner of the orange pouch, and the pouch is stitched closed.
  • the water-soluble unit dose article must be preconditioned for a minimum of 2 weeks at 23°C, 50%rH before testing.
  • Load 4 loads of 3 kg of mixed cotton (13 pieces) and polycotton (10 pieces) were desized before use by washing in a short cotton cycle at 60°C with 79g of Ariel Professional detergent at a water hardness of 15gpg, followed by another short cotton cycle at 60°C without any detergent at a water hardness of 15gpg, and finally tumble-dried.
  • Each load of 3.0kg is pretreated 2 times by washing with 4 Ariel pods in the “prewef ’ cycle, followed by a wash without detergent in the “dissolution program” described below, and finally tumble-dried.
  • the Electrolux W565 programmable washing machines were programmed with 2 programs.
  • the first program was designed to equally wet the load (pre-wet program).
  • the second program (dissolution program) was utilized to simulate 15min of a Western Europe stressed cycle setting, followed by pumping out the water and starting a spin of 3min at 1 lOOrpm.
  • the wet ballast was taken out of the drum and 4 orange pouches containing each a different test leg water soluble unit dose article were aligned at the bottom of the drum, hence 4 different test products are tested at once in the same washing machine in order to render the testing environment as reproducible as possible across the test legs.
  • 10g of suds suppressor (Dowsil GP-4314 silicone suds suppressor, commercially available from the Dow Coming company) was added in the dispenser, and the wet load was placed on top of the orange pouches, without allowing the drum to move.
  • the dissolution program was initiated. At the end of the full program, the orange pouches were transferred to a grading room (equipped with D65 lighting conditions) to be assessed for residues by expert graders.
  • the final score is calculated as the average of 4 external replicates, i.e. 4 different washing machine runs, and repeated 2 times (average of 8 scores).
  • the unit dose article dissolution profile and linked film residue risk was assessed for film - liquid detergent combinations with a gelling factor G according to the invention and cross-compared with film -liquid detergent combinations with a gelling factor G outside the scope of the invention, following the test method described herein.
  • Detergent composition Table 1 describes the liquid laundry detergent composition tested.
  • the liquid detergent composition has been prepared through mixing of the individual detergent components in a batch process.
  • Lutensit Z96 partially sulfate polyethoxylated hexamethylenediamine, as available from the BASF company *** premix composition: 37wt% cationic hydroxyethyl cellulose, 60wt% PPG400, 3wt% Acusol
  • Table 2 describes a range of water-soluble film/related water-soluble resins used within the gelling factor and pouch dissolution tests described herein, as received from the MonoSol company.
  • Film/resin composition 3 represents the outer films of Ariel All-in one product, as commercially available in the UK in January 2024.
  • Table 3 shows the gelling factor G and pouch dissolution data obtained using the test methods described herein.
  • the gelling factor G data the bottom compartment liquid detergent ex Table 1 was combined with the different water-soluble resins ex Table 2.
  • the pouch dissolution test a 3-compartment pouch following the Ariel All-in one superposed design, as commercially available in the UK in January 2024, made of the different water-soluble resins ex Table 2 and comprising the detergent composition ex Table 1 has been tested. It can be seen that the combination of the liquid detergent composition with a water-soluble film yielding a lower gelling factor G according to the invention also yields a strongly better pouch dissolution hence reduced film residue risk on fabrics at the end of a wash cycle.
  • Gelling factor G and pouch dissolution Table 4 summarizes the gelling factor G for a range of commercial product formulations combined with water-soluble resin composition 3, as well as with the water-soluble resin from their respective commercially used film (e.g. M8630 ex the MonoSol company). It can be seen that when exchanging the liquid detergent composition ex Table 1 with commercially available alternatives, that none of these commercially available alternative formulations nor commercially available film resin -formulation combinations yield in a gelling factor G according to the invention, independent whether these commercially available formulations are tested with their respective commercial film resin, or with the comparative test resin used within this testing.

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Abstract

L'invention concerne un article en dose unitaire comprenant un film soluble dans l'eau et au moins une composition détergente, la composition détergente étant encapsulée à l'intérieur d'un compartiment formé par le film soluble dans l'eau ; le film soluble dans l'eau comprenant un polymère d'alcool polyvinylique et le polymère d'alcool polyvinylique comprenant un copolymère d'alcool polyvinylique anionique, un homopolymère d'alcool polyvinylique, ou un mélange de ceux-ci ; la composition détergente comprenant un système tensioactif non-savon ; et une solution aqueuse comprenant le film soluble dans l'eau et la composition détergente dissoute dans celle-ci ayant un facteur de gélification G inférieur à 1,25.
PCT/US2025/028816 2024-05-13 2025-05-12 Article en dose unitaire Pending WO2025240281A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017218408A1 (fr) * 2016-06-13 2017-12-21 Monosol, Llc Articles en dose unitaire hydrosolubles, fabriqués à partir d'une combinaison de différents films
WO2020205825A1 (fr) * 2019-04-01 2020-10-08 The Procter & Gamble Company Article en dose unitaire soluble dans l'eau comprenant un film soluble dans l'eau comprenant un polymère d'alcool polyvinylique comprenant une unité monomère anionique
EP4015566A1 (fr) * 2020-12-15 2022-06-22 The Procter & Gamble Company Article de dose unitaire soluble dans l'eau
WO2022132848A1 (fr) * 2020-12-15 2022-06-23 The Procter & Gamble Company Article de dose unitaire hydrosoluble
WO2022132847A1 (fr) * 2020-12-15 2022-06-23 The Procter & Gamble Company Article à dose unitaire hydrosoluble

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017218408A1 (fr) * 2016-06-13 2017-12-21 Monosol, Llc Articles en dose unitaire hydrosolubles, fabriqués à partir d'une combinaison de différents films
WO2020205825A1 (fr) * 2019-04-01 2020-10-08 The Procter & Gamble Company Article en dose unitaire soluble dans l'eau comprenant un film soluble dans l'eau comprenant un polymère d'alcool polyvinylique comprenant une unité monomère anionique
EP4015566A1 (fr) * 2020-12-15 2022-06-22 The Procter & Gamble Company Article de dose unitaire soluble dans l'eau
WO2022132848A1 (fr) * 2020-12-15 2022-06-23 The Procter & Gamble Company Article de dose unitaire hydrosoluble
WO2022132847A1 (fr) * 2020-12-15 2022-06-23 The Procter & Gamble Company Article à dose unitaire hydrosoluble
CA3201171A1 (fr) * 2020-12-15 2022-06-23 Florence Catherine Courchay Article a dose unitaire hydrosoluble

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