WO2023222322A1 - Concentrated fabric conditioner - Google Patents
Concentrated fabric conditioner Download PDFInfo
- Publication number
- WO2023222322A1 WO2023222322A1 PCT/EP2023/060272 EP2023060272W WO2023222322A1 WO 2023222322 A1 WO2023222322 A1 WO 2023222322A1 EP 2023060272 W EP2023060272 W EP 2023060272W WO 2023222322 A1 WO2023222322 A1 WO 2023222322A1
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- WO
- WIPO (PCT)
- Prior art keywords
- fabric conditioner
- concentrated fabric
- concentrated
- composition
- perfume
- Prior art date
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- 239000002979 fabric softener Substances 0.000 title claims abstract description 40
- 239000000203 mixture Substances 0.000 claims abstract description 87
- 239000003755 preservative agent Substances 0.000 claims abstract description 27
- 150000001735 carboxylic acids Chemical class 0.000 claims abstract description 26
- 230000002335 preservative effect Effects 0.000 claims abstract description 24
- 239000004615 ingredient Substances 0.000 claims abstract description 23
- -1 aromatic alcohols Chemical class 0.000 claims abstract description 22
- 239000004744 fabric Substances 0.000 claims abstract description 15
- 238000009472 formulation Methods 0.000 claims abstract description 8
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000002904 solvent Substances 0.000 claims description 10
- 241001331781 Aspergillus brasiliensis Species 0.000 claims description 5
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 5
- 229930195733 hydrocarbon Natural products 0.000 claims description 4
- 150000002430 hydrocarbons Chemical class 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 4
- 125000002091 cationic group Chemical group 0.000 claims description 3
- 235000014655 lactic acid Nutrition 0.000 claims description 3
- 239000004310 lactic acid Substances 0.000 claims description 2
- 239000002304 perfume Substances 0.000 description 59
- 239000000463 material Substances 0.000 description 29
- 150000003856 quaternary ammonium compounds Chemical class 0.000 description 28
- 239000003094 microcapsule Substances 0.000 description 22
- 150000002148 esters Chemical class 0.000 description 19
- 150000004665 fatty acids Chemical class 0.000 description 12
- 125000003342 alkenyl group Chemical group 0.000 description 10
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 9
- 229910052740 iodine Inorganic materials 0.000 description 9
- 239000011630 iodine Substances 0.000 description 9
- 125000000217 alkyl group Chemical group 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 8
- 235000014113 dietary fatty acids Nutrition 0.000 description 7
- 239000000194 fatty acid Substances 0.000 description 7
- 229930195729 fatty acid Natural products 0.000 description 7
- JZMJDSHXVKJFKW-UHFFFAOYSA-M methyl sulfate(1-) Chemical compound COS([O-])(=O)=O JZMJDSHXVKJFKW-UHFFFAOYSA-M 0.000 description 7
- 125000001453 quaternary ammonium group Chemical group 0.000 description 7
- 238000009835 boiling Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 150000005690 diesters Chemical class 0.000 description 6
- 125000004432 carbon atom Chemical group C* 0.000 description 5
- GSEJCLTVZPLZKY-UHFFFAOYSA-O triethanolammonium Chemical compound OCC[NH+](CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-O 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- 229920001817 Agar Polymers 0.000 description 4
- 241000233866 Fungi Species 0.000 description 4
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 4
- 239000008272 agar Substances 0.000 description 4
- 238000010790 dilution Methods 0.000 description 4
- 239000012895 dilution Substances 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- DBVJJBKOTRCVKF-UHFFFAOYSA-N Etidronic acid Chemical group OP(=O)(O)C(O)(C)P(O)(O)=O DBVJJBKOTRCVKF-UHFFFAOYSA-N 0.000 description 3
- 229920003180 amino resin Polymers 0.000 description 3
- 125000002843 carboxylic acid group Chemical group 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 125000002768 hydroxyalkyl group Chemical group 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 239000003760 tallow Substances 0.000 description 3
- 150000005691 triesters Chemical class 0.000 description 3
- 235000019445 benzyl alcohol Nutrition 0.000 description 2
- 239000002775 capsule Substances 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 125000004185 ester group Chemical group 0.000 description 2
- 150000002190 fatty acyls Chemical group 0.000 description 2
- 239000000796 flavoring agent Substances 0.000 description 2
- 235000019634 flavors Nutrition 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000003352 sequestering agent Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229920000858 Cyclodextrin Polymers 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 150000003855 acyl compounds Chemical class 0.000 description 1
- 125000003158 alcohol group Chemical group 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000001153 anti-wrinkle effect Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 239000003443 antiviral agent Substances 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229940097362 cyclodextrins Drugs 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- IQDGSYLLQPDQDV-UHFFFAOYSA-N dimethylazanium;chloride Chemical compound Cl.CNC IQDGSYLLQPDQDV-UHFFFAOYSA-N 0.000 description 1
- XXWFDPVOXNJASB-UHFFFAOYSA-N ethanol;phenol Chemical compound CCO.OC1=CC=CC=C1 XXWFDPVOXNJASB-UHFFFAOYSA-N 0.000 description 1
- IVJISJACKSSFGE-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine Chemical compound O=C.NC1=NC(N)=NC(N)=N1 IVJISJACKSSFGE-UHFFFAOYSA-N 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 230000002538 fungal effect Effects 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 125000001183 hydrocarbyl group Chemical group 0.000 description 1
- 239000003752 hydrotrope Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 239000000077 insect repellent Substances 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003605 opacifier Substances 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 239000006179 pH buffering agent Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000867 polyelectrolyte Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000000244 polyoxyethylene sorbitan monooleate Substances 0.000 description 1
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920000053 polysorbate 80 Polymers 0.000 description 1
- 229940068968 polysorbate 80 Drugs 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- UMSVPCYSAUKCAZ-UHFFFAOYSA-N propane;hydrochloride Chemical compound Cl.CCC UMSVPCYSAUKCAZ-UHFFFAOYSA-N 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000012449 sabouraud dextrose agar Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 230000000475 sunscreen effect Effects 0.000 description 1
- 239000000516 sunscreening agent Substances 0.000 description 1
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 1
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
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
- C11D3/0005—Other compounding ingredients characterised by their effect
- C11D3/001—Softening compositions
- C11D3/0015—Softening compositions liquid
-
- 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
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/38—Cationic compounds
- C11D1/62—Quaternary ammonium compounds
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2003—Alcohols; Phenols
- C11D3/2006—Monohydric alcohols
- C11D3/2034—Monohydric alcohols aromatic
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2003—Alcohols; Phenols
- C11D3/2041—Dihydric alcohols
- C11D3/2058—Dihydric alcohols aromatic
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2075—Carboxylic acids-salts thereof
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2075—Carboxylic acids-salts thereof
- C11D3/2086—Hydroxy carboxylic acids-salts thereof
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/48—Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial compositions
Definitions
- the present invention is in the field of concentrated fabric conditioners. of the Invention
- Concentrated fabric conditioners are fabric conditioners containing high levels of fabric softening actives. Such formulations are challenging to formulate as suitable consumer products due to the high levels of actives leading to issues such as stability. One particularly challenging aspect for concentrated formulations is preservation. Many well-known preservatives are either insoluble in non-aqueous solvents or lead to turbidity I precipitation in a concentrated fabric conditioner composition. Fungus such as Aspergillus brasiliensis are particularly important to preserve against. of the Invention
- a concentrated fabric conditioner formulation comprising: a) 10 wt.% to 85 wt.% fabric softening active; b) Preservative composition comprising at least two ingredients selected from aromatic alcohols and/or carboxylic acids.
- the invention further relates to a method of preserving a concentrated fabric conditioner wherein aromatic alcohol and carboxylic acid are added to the concentrated fabric conditioner.
- the fabric conditioners described herein comprise fabric softening actives.
- the fabric softening actives are cationic materials.
- the fabric conditioners described herein preferably comprise quaternary ammonium compounds (QAC).
- the QAC preferably comprises at least one chain derived from fatty acids, more preferably at least two chains derived from a fatty acid.
- fatty acids are defined as aliphatic monocarboxylic acids having a chain of 4 to 28 carbons.
- Fatty acids may be derived from various sources such as tallow or plant sources.
- the fatty acid chains are derived from plants.
- the fatty acid chains of the QAC comprise from 10 to 50 wt. % of saturated C18 chains and from 5 to 40 wt. % of monounsaturated C18 chains by weight of total fatty acid chains.
- the fatty acid chains of the QAC comprise from 20 to 40 wt. %, preferably from 25 to 35 wt.
- the preferred quaternary ammonium fabric softening actives for use in compositions of the present invention are so called "ester quats" or ester linked quaternary ammonium compounds.
- Particularly preferred materials are the ester-linked triethanolamine (TEA) quaternary ammonium compounds comprising a mixture of mono-, di- and tri-ester linked components.
- TEA-based fabric softening compounds comprise a mixture of mono, di- and tri ester forms of the compound where the di-ester linked component comprises no more than 70 wt.% of the fabric softening compound, preferably no more than 60 wt.% e.g., no more than 55%, or even no more that 45% of the fabric softening compound and at least 10 wt.% of the monoester linked component.
- a first group of quaternary ammonium compounds (QACs) suitable for use in the present invention is represented by formula (I): wherein each R is independently selected from a C5 to C35 alkyl or alkenyl group; R 1 represents a C1 to C4 alkyl, C2 to C4 alkenyl or a C1 to C4 hydroxyalkyl group; T may be either O-CO. (i.e. an ester group bound to R via its carbon atom), or may alternatively be CO-O (i.e.
- Suitable actives include soft quaternary ammonium actives such as Stepantex VT90, Rewoquat WE18 (ex-Evonik) and Tetranyl L1/90N, Tetranyl L190 SP and Tetranyl L190 S (all ex-Kao).
- TEA ester quats actives rich in the di-esters of triethanolammonium methylsulfate, otherwise referred to as "TEA ester quats".
- a second group of QACs suitable for use in the invention is represented by formula (II):
- each R 1 group is independently selected from C1 to C4 alkyl, hydroxyalkyl or C2 to C4 alkenyl groups; and wherein each R 2 group is independently selected from C8 to C28 alkyl or alkenyl groups; and wherein n, T, and X- are as defined above.
- Preferred materials of this second group include 1 ,2 bis[tallowoyloxy]-3- trimethylammonium propane chloride, 1 ,2 bis[hardened tallowoyloxy]-3- trimethylammonium propane chloride, 1 ,2- bis[oleoyloxy]-3-trimethylammonium propane chloride, and 1 ,2 bis[stearoyloxy]-3- trimethylammonium propane chloride.
- Such materials are described in US 4, 137,180 (Lever Brothers).
- these materials also comprise an amount of the corresponding monoester.
- a third group of QACs suitable for use in the invention is represented by formula (III): wherein each R 1 group is independently selected from C1 to C4 alkyl, or C2 to C4 alkenyl groups; and wherein each R 2 group is independently selected from C8 to C28 alkyl or alkenyl groups; and n, T, and X- are as defined above.
- Preferred materials of this third group include bis(2-tallowoyloxyethyl)dimethyl ammonium chloride, partially hardened and hardened versions thereof.
- a particular example of the third group of QACs is represented the by the formula (IV):
- a fourth group of QACs suitable for use in the invention are represented by formula (V)
- Ri and R2 are independently selected from C10 to C22 alkyl or alkenyl groups, preferably C14 to C20 alkyl or alkenyl groups.
- X- is as defined above.
- the iodine value of the quaternary ammonium fabric conditioning material is preferably from 0 to 80, more preferably from 0 to 60, and most preferably from 0 to 45.
- the iodine value may be chosen as appropriate.
- Essentially saturated material having an iodine value of from 0 to 5, preferably from 0 to 1 may be used in the compositions of the invention. Such materials are known as "hardened" quaternary ammonium compounds.
- a further preferred range of iodine values is from 20 to 60, preferably 25 to 50, more preferably from 30 to 45.
- a material of this type is a "soft" triethanolamine quaternary ammonium compound, preferably triethanolamine di-alkylester methylsulfate. Such ester-linked triethanolamine quaternary ammonium compounds comprise unsaturated fatty chains.
- the iodine value represents the mean iodine value of the parent fatty acyl compounds or fatty acids of all the quaternary ammonium materials present.
- the iodine value represents the mean iodine value of the parent acyl compounds of fatty acids of all of the quaternary ammonium materials present.
- Iodine value refers to, the fatty acid used to produce the QAC, the measurement of the degree of unsaturation present in a material by a method of nmr spectroscopy as described in Anal. Chem., 34, 1136 (1962) Johnson and Shoolery.
- a further type of softening compound may be a non-ester quaternary ammonium material represented by formula (VI): R 1
- the fabric conditioners of the present invention comprise more than 10 wt. % ester- linked quaternary ammonium compound, preferably more than 15 wt. % ester-linked quaternary ammonium compound, more preferably more than 25 wt. % ester-linked quaternary ammonium compound, most preferably more than 35 wt.% ester-linked quaternary ammonium compound, by weight of the composition.
- the fabric conditioners of the present invention comprise less than 85 wt. % ester-linked quaternary ammonium compound, more preferably less than 80 wt. % ester-linked quaternary ammonium compound, most preferably less than 70 wt.
- the fabric conditioners comprise 10 to 85 wt. % ester-linked quaternary ammonium compound, preferably 15 to 80 wt.% ester-linked quaternary ammonium compound, more preferably 25 to 70 wt.% ester-linked quaternary ammonium compound and most preferably 35 to 70 wt. % ester-linked quaternary ammonium compound by weight of the composition.
- Particularly preferred ranges may be 30 to 60 wt.% ester-linked quaternary ammonium compound and 50 to 80 wt.% ester-linked quaternary ammonium compound.
- the concentrated fabric conditioners described herein comprise a preservative composition comprising at least two ingredients selected from aromatic alcohols and/or carboxylic acids. Preferably 2 to 5 ingredients selected from aromatic alcohols and/or carboxylic acids, most preferably 2 to 3 ingredients selected from aromatic alcohols and/or carboxylic acids.
- the concentrated fabric conditioner compositions preferably comprise 0.01 to 5 wt.% preservative, more preferably 0.05 to 3 wt.% preservative, most preferably 0.1 to 2 wt.% preservative by weight of the composition.
- the preservative composition may comprise at least two carboxylic acids, two aromatic alcohols or a carboxylic acid and an aromatic alcohol.
- the preservative composition comprises at least two carboxylic acids or a carboxylic acid and an aromatic alcohol. More preferably the preservative composition comprises at least a carboxylic acid and an aromatic alcohol.
- the preservative composition contains at least a carboxylic acid and an aromatic alcohol.
- the aromatic alcohol may be any chemical compounds containing a hydroxyl group ( — OH) bonded indirectly to an aromatic hydrocarbon group.
- the alcohol group is bonded to a hydrocarbon chain of 1 to 10 carbon atoms, which is bonded to the aromatic ring, more preferably 1 to 7 carbon atoms and most preferably 1 to 4 carbon atoms.
- Particularly preferred aromatic alcohols include benzyl alcohol and phenol ethanol.
- the carboxylic acid comprises a 1 to 4 carboxylic acid groups, more preferably 1 to 3 carboxylic acid groups.
- the carboxylic acid comprises 1 to 10 carbon atoms, preferably 1 to 7, most preferably 1 to 4 carbon atoms.
- Examples of preferred carboxylic acids include citric and lactic acids.
- the preservative composition comprises lactic acid.
- compositions descried herein preferably comprise a solvent.
- the solvent is non-aqueous.
- the solvent is an organic solvent.
- Preferred organic solvents include hydrocarbons and/or aromatic alcohols.
- the solvent may comprise a mixture of suitable solvents.
- Particularly preferred hydrocarbons are hydrocarbons with a carbon chain comprising from 12 to 18 carbons.
- a particularly preferred aromatic alcohol is benzyl alcohol.
- the composition comprises 5 to 80 wt. % of the solvent described herein. More preferably 10 to 65 wt. % solvent and most preferably 15 to 50 wt. % solvent by weight of the composition.
- Perfumes preferably 5 to 80 wt. % of the solvent described herein. More preferably 10 to 65 wt. % solvent and most preferably 15 to 50 wt. % solvent by weight of the composition.
- compositions as described herein preferably comprise perfume.
- the compositions preferably comprise 0.1 to 30 wt. % perfume, i.e. free perfume and/or perfume microcapsules.
- free perfumes and perfume microcapsules provide the consumer with perfume hits at different points during the laundry process. It is particularly preferred that the compositions of the present invention comprise a combination of both free perfume and perfume microcapsules.
- compositions of the present invention comprise 0.5 to 30 wt.% perfume materials, more preferably 1 to 20 wt.% perfume materials, most preferably 1 to 15 wt. % perfume materials.
- Useful perfume components may include materials of both natural and synthetic origin. They include single compounds and mixtures. Specific examples of such components may be found in the current literature, e.g., in Fenaroli's Handbook of Flavor Ingredients, 1975, CRC Press; Synthetic Food Adjuncts, 1947 by M. B. Jacobs, edited by Van Nostrand; or Perfume and Flavor Chemicals by S. Arctander 1969, Montclair, N.J. (USA). These substances are well known to the person skilled in the art of perfuming, flavouring, and/or aromatizing consumer products.
- compositions of the present invention preferably comprise 0.5 to 20 wt.% free perfume, more preferably 0.5 to 12 wt. % free perfume.
- Particularly preferred perfume components are blooming perfume components and substantive perfume components.
- Blooming perfume components are defined by a boiling point less than 250°C and a LogP or greater than 2.5.
- Substantive perfume components are defined by a boiling point greater than 250°C and a LogP greater than 2.5. Boiling point is measured at standard pressure (760 mm Hg).
- a perfume composition will comprise a mixture of blooming and substantive perfume components.
- the perfume composition may comprise other perfume components.
- perfume components it is commonplace for a plurality of perfume components to be present in a free oil perfume composition.
- compositions for use in the present invention it is envisaged that there will be three or more, preferably four or more, more preferably five or more, most preferably six or more different perfume components.
- An upper limit of 300 perfume components may be applied.
- compositions of the present invention preferably comprise 0.5 to 20 wt.% perfume microcapsules, more preferably 0.5 to 12 wt. % perfume microcapsules.
- the weight of microcapsules is of the material as supplied.
- suitable encapsulating materials may comprise, but are not limited to; aminoplasts, proteins, polyurethanes, polyacrylates, polymethacrylates, polysaccharides, polyamides, polyolefins, gums, silicones, lipids, modified cellulose, polyphosphate, polystyrene, polyesters or combinations thereof.
- Particularly preferred materials are aminoplast microcapsules, such as melamine formaldehyde or urea formaldehyde microcapsules.
- Perfume microcapsules of the present invention can be friable microcapsules and/or moisture activated microcapsules.
- friable it is meant that the perfume microcapsule will rupture when a force is exerted.
- moisture activated it is meant that the perfume is released in the presence of water.
- the compositions of the present invention preferably comprise friable microcapsules. Moisture activated microcapsules may additionally be present. Examples of a microcapsules which can be friable include aminoplast microcapsules.
- Perfume components contained in a microcapsule may comprise odiferous materials and/or pro-fragrance materials.
- Particularly preferred perfume components contained in a microcapsule are blooming perfume components and substantive perfume components.
- Blooming perfume components are defined by a boiling point less than 250°C and a LogP greater than 2.5.
- the encapsulated perfume compositions comprises at least 20 wt.% blooming perfume ingredients, more preferably at least 30 wt.% and most preferably at least 40 wt.% blooming perfume ingredients.
- Substantive perfume components are defined by a boiling point greater than 250°C and a LogP greater than 2.5.
- the encapsulated perfume compositions comprises at least 10 wt.% substantive perfume ingredients, more preferably at least 20 wt.% and most preferably at least 30 wt.% substantive perfume ingredients.
- a perfume composition will comprise a mixture of blooming and substantive perfume components.
- the perfume composition may comprise other perfume components. It is commonplace for a plurality of perfume components to be present in a microcapsule. In the compositions for use in the present invention it is envisaged that there will be three or more, preferably four or more, more preferably five or more, most preferably six or more different perfume components in a microcapsule. An upper limit of 300 perfume components may be applied.
- the microcapsules may comprise perfume components and a carrier for the perfume ingredients, such as zeolites or cyclodextrins.
- compositions for use as described herein may comprise other ingredients of fabric conditioner liquids as will be known to the person skilled in the art.
- antifoams, insect repellents, shading or hueing dyes anti-viral agents, pH buffering agents, perfume carriers, hydrotropes, anti-redeposition agents, soil-release agents, polyelectrolytes, anti-shrinking agents, anti-wrinkle agents, anti-oxidants, dyes, colorants, sunscreens, anti-corrosion agents, drape imparting agents, anti-static agents, sequestrants and ironing aids.
- the products of the invention may contain pearlisers and/or opacifiers.
- a preferred sequestrant is HEDP, an abbreviation for Etidronic acid or 1 -hydroxyethane 1,1-diphosphonic acid.
- compositions are non-aqueous, however some water may be present. Preferably less than 20 wt.% water, more preferably less than 10 wt. % water and most preferably, less than 5 wt. % water by weight of the composition.
- compositions described herein are preferably used in the rinse stage of the laundry process. They may be used in their concentrated form and dosed into the laundry process.
- the composition may be dosed into the laundry process using a measuring cap, a pipet, a dropper or any other suitable dosing means.
- the composition is dosed into the rinse stage of the laundry process.
- the concentrated compositions described herein may be used in unit dose capsules or in a dilute at home product. If used in a unit dose capsule, the composition described herein may be packaged as a unit dose in polymeric film soluble in water. Preferably 2 to 15 ml are enclosed in a polymeric film.
- a dilute at home product If used in a dilute at home product, this means that the composition is sold to the consumer in a concentrated format (as described herein) and the consumer dilutes the product at home.
- the dilution is with water.
- the consumer may pour the concentrated product (as described herein) into a container of water to make a more diluted product. Dilution occurs before the laundry process, in other word before the product is dosed into the washing machine or container in which the consumer is doing their laundry. Dilution allows the consumer to follow their regular dosing habits.
- the consumer is instructed to dilute using a dilution ratio of non-aqueous concentrated liquid fabric conditioner composition to water of 1:2 to 1:20, more preferably 1:3 to 1:12.
- the consumer may preferably be instructed the shake before use. This is particularly preferred if perfume microcapsules are present in the composition.
- Diluting with water prior to being added to the laundry process means that before adding the product to the washing machine or the vessel used for hand washing, i.e. the consumer dilutes the product and then adds it to the drum or drawer of a washing machine of the vessel used for hand washing.
- a method of preserving a fabric conditioner in particular preventing Aspergillus brasiliensis var niger growth in a fabric conditioner formulation wherein a preservative composition comprising at least two ingredients selected from aromatic alcohols and/or carboxylic acids is added to the concentrated fabric conditioner.
- a preservative composition comprising at least two ingredients selected from aromatic alcohols and/or carboxylic acids to preserve a concentrated fabric conditioner as described herein.
- compositions were prepared by mixing the ingredients in a beaker, then heating to ⁇ 65°C for 10 minutes with stirring. The compositions were left for a day then a visual assessment was then made of the compositions.
- Example 2 shows many common preservatives are incompatible with concentrated fabric conditioner compositions.
- compositions were prepared by mixing the ingredients in a beaker, then heating to ⁇ 65°C for 10 minutes with stirring.
- the fungus, Aspergillus brasiliensis var niger was grown on agar with media or food for the fungus.
- the spores were extracted by adding between 1 and 5 ml of sterile 0.05% polysorbate 80.
- the ‘stock’ spore suspension was transferred to a sterile container.
- the product samples were inoculated with yeast suspension or mould spore suspension to give final concentration of 10 5 CFU/g of product.
- the inoculated product was stored at 25 +/-1oC.
- Table 4 demonstrates that a preservative composition comprising two ingredients selected from aromatic alcohols and/or carboxylic acids provides improved preservation compared to the two ingredients alone.
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Abstract
A concentrated fabric conditioner formulation comprising: 10 wt.% to 85 wt.% fabric softening active; and a preservative composition comprising at least two ingredients selected from aromatic alcohols and/or carboxylic acids.
Description
CONCENTRATED FABRIC CONDITIONER
Field of the Invention
Concentrated fabric conditioners are fabric conditioners containing high levels of fabric softening actives. Such formulations are challenging to formulate as suitable consumer products due to the high levels of actives leading to issues such as stability. One particularly challenging aspect for concentrated formulations is preservation. Many well-known preservatives are either insoluble in non-aqueous solvents or lead to turbidity I precipitation in a concentrated fabric conditioner composition. Fungus such as Aspergillus brasiliensis are particularly important to preserve against. of the Invention
It has been found that by using a preservative combination of at least two ingredients selected from: aromatic alcohols and/or carboxylic acids, a stable formulation can be obtained, and preservation efficacy is improved.
Accordingly in one aspect of the present invention is provided a concentrated fabric conditioner formulation comprising: a) 10 wt.% to 85 wt.% fabric softening active; b) Preservative composition comprising at least two ingredients selected from aromatic alcohols and/or carboxylic acids.
The invention further relates to a method of preserving a concentrated fabric conditioner wherein aromatic alcohol and carboxylic acid are added to the concentrated fabric conditioner.
In a further aspect of the present invention is provided a use of aromatic alcohol and carboxylic acid to preserve a concentrated fabric conditioner.
Detailed
of the Invention
These and other aspects, features and advantages will become apparent to those of ordinary skill in the art from a reading of the following detailed description and the appended claims. For the avoidance of doubt, any feature of one aspect of the present invention may be utilised in any other aspect of the invention. The word “comprising” is intended to mean “including” but not necessarily “consisting of” or “composed of.” In other words, the listed steps or options need not be exhaustive. It is noted that the examples given in the description below are intended to clarify the invention and are not intended to limit the invention to those examples per se. Similarly, all percentages are weight/weight percentages unless otherwise indicated. Except in the operating and comparative examples, or where otherwise explicitly indicated, all numbers in this description indicating amounts of material or conditions of reaction, physical properties of materials and/or use are to be understood as modified by the word “about”. Numerical ranges expressed in the format "from x to y" are understood to include x and y. When for a specific feature multiple preferred ranges are described in the format "from x to y", it is understood that all ranges combining the different endpoints are also contemplated.
Fabric softening active
The fabric conditioners described herein comprise fabric softening actives. The fabric softening actives are cationic materials. The fabric conditioners described herein preferably comprise quaternary ammonium compounds (QAC).
The QAC preferably comprises at least one chain derived from fatty acids, more preferably at least two chains derived from a fatty acid. Generally fatty acids are defined as aliphatic monocarboxylic acids having a chain of 4 to 28 carbons. Fatty acids may be derived from various sources such as tallow or plant sources. Preferably the fatty acid chains are derived from plants. Preferably the fatty acid chains of the QAC comprise from 10 to 50 wt. % of saturated C18 chains and from 5 to 40 wt. % of monounsaturated C18 chains by weight of total fatty acid chains. In a further preferred embodiment, the fatty acid chains of the QAC comprise from 20 to 40 wt. %, preferably from 25 to 35 wt. % of saturated C18 chains and from 10 to 35 wt. %, preferably from 15 to 30 wt. % of monounsaturated C18 chains, by weight of total fatty acid chains.
The preferred quaternary ammonium fabric softening actives for use in compositions of the present invention are so called "ester quats" or ester linked quaternary ammonium compounds. Particularly preferred materials are the ester-linked triethanolamine (TEA) quaternary ammonium compounds comprising a mixture of mono-, di- and tri-ester linked components. Typically, TEA-based fabric softening compounds comprise a mixture of mono, di- and tri ester forms of the compound where the di-ester linked component comprises no more than 70 wt.% of the fabric softening compound, preferably no more than 60 wt.% e.g., no more than 55%, or even no more that 45% of the fabric softening compound and at least 10 wt.% of the monoester linked component.
A first group of quaternary ammonium compounds (QACs) suitable for use in the present invention is represented by formula (I):
wherein each R is independently selected from a C5 to C35 alkyl or alkenyl group; R1 represents a C1 to C4 alkyl, C2 to C4 alkenyl or a C1 to C4 hydroxyalkyl group; T may be either O-CO. (i.e. an ester group bound to R via its carbon atom), or may alternatively be CO-O (i.e. an ester group bound to R via its oxygen atom); n is a number selected from 1 to 4; m is a number selected from 1, 2, or 3; and X- is an anionic counter-ion, such as a halide or alkyl sulphate, e.g. chloride or methylsulfate. Di-esters variants of formula I (i.e., m = 2) are preferred and typically have mono- and tri-ester analogues associated with them. Such materials are particularly suitable for use in the present invention.
Suitable actives include soft quaternary ammonium actives such as Stepantex VT90, Rewoquat WE18 (ex-Evonik) and Tetranyl L1/90N, Tetranyl L190 SP and Tetranyl L190 S (all ex-Kao).
Also suitable are actives rich in the di-esters of triethanolammonium methylsulfate, otherwise referred to as "TEA ester quats".
Commercial examples include Praepagen™ TQL (ex-Clariant), and Tetranyl™ AHT-1 (ex-Kao), (both di-[hardened tallow ester] of triethanolammonium methylsulfate), AT-1 (di-[tallow ester] of triethanolammonium methylsulfate), and L5/90 (di-[palm ester] of triethanolammonium methylsulfate), (both ex-Kao), and Rewoquat™ WE15 (a di-ester of triethanolammonium
methylsulfate having fatty acyl residues deriving from C10-C20 and C16-C18 unsaturated fatty acids) (ex-Evonik).
A second group of QACs suitable for use in the invention is represented by formula (II):
(R’ HCH^-CH-TR' X- (II) CHjTR2 wherein each R1 group is independently selected from C1 to C4 alkyl, hydroxyalkyl or C2 to C4 alkenyl groups; and wherein each R2 group is independently selected from C8 to C28 alkyl or alkenyl groups; and wherein n, T, and X- are as defined above.
Preferred materials of this second group include 1 ,2 bis[tallowoyloxy]-3- trimethylammonium propane chloride, 1 ,2 bis[hardened tallowoyloxy]-3- trimethylammonium propane chloride, 1 ,2- bis[oleoyloxy]-3-trimethylammonium propane chloride, and 1 ,2 bis[stearoyloxy]-3- trimethylammonium propane chloride. Such materials are described in US 4, 137,180 (Lever Brothers). Preferably, these materials also comprise an amount of the corresponding monoester.
A third group of QACs suitable for use in the invention is represented by formula (III):
wherein each R1 group is independently selected from C1 to C4 alkyl, or C2 to C4 alkenyl groups; and wherein each R2 group is independently selected from C8 to C28 alkyl or alkenyl groups; and n, T, and X- are as defined above. Preferred materials of this third group include bis(2-tallowoyloxyethyl)dimethyl ammonium chloride, partially hardened and hardened versions thereof.
A particular example of the third group of QACs is represented the by the formula (IV):
A fourth group of QACs suitable for use in the invention are represented by formula (V)
Ri and R2 are independently selected from C10 to C22 alkyl or alkenyl groups, preferably C14 to C20 alkyl or alkenyl groups. X- is as defined above.
The iodine value of the quaternary ammonium fabric conditioning material is preferably from 0 to 80, more preferably from 0 to 60, and most preferably from 0 to 45. The iodine value may be chosen as appropriate. Essentially saturated material having an iodine value of from 0 to 5, preferably from 0 to 1 may be used in the compositions of the invention. Such materials are known as "hardened" quaternary ammonium compounds.
A further preferred range of iodine values is from 20 to 60, preferably 25 to 50, more preferably from 30 to 45. A material of this type is a "soft" triethanolamine quaternary ammonium compound, preferably triethanolamine di-alkylester methylsulfate. Such ester-linked triethanolamine quaternary ammonium compounds comprise unsaturated fatty chains.
If there is a mixture of quaternary ammonium materials present in the composition, the iodine value, referred to above, represents the mean iodine value of the parent fatty acyl compounds or fatty acids of all the quaternary ammonium materials present. Likewise, if there are any saturated quaternary ammonium materials present in the composition, the iodine value represents the mean iodine value of the parent acyl compounds of fatty acids of all of the quaternary ammonium materials present.
Iodine value as used in the context of the present invention refers to, the fatty acid used to produce the QAC, the measurement of the degree of unsaturation present in a material by a method of nmr spectroscopy as described in Anal. Chem., 34, 1136 (1962) Johnson and Shoolery.
A further type of softening compound may be a non-ester quaternary ammonium material represented by formula (VI):
R1
Rl— — +— R2
(VI) wherein each R1 group is independently selected from C1 to C4 alkyl, hydroxyalkyl or C2 to C4 alkenyl groups; R2 group is independently selected from C8 to C28 alkyl or alkenyl groups, and X- is as defined above.
Preferably the fabric conditioners of the present invention comprise more than 10 wt. % ester- linked quaternary ammonium compound, preferably more than 15 wt. % ester-linked quaternary ammonium compound, more preferably more than 25 wt. % ester-linked quaternary ammonium compound, most preferably more than 35 wt.% ester-linked quaternary ammonium compound, by weight of the composition. Preferably the fabric conditioners of the present invention comprise less than 85 wt. % ester-linked quaternary ammonium compound, more preferably less than 80 wt. % ester-linked quaternary ammonium compound, most preferably less than 70 wt. % ester-linked quaternary ammonium compound by weight of the composition. Suitably the fabric conditioners comprise 10 to 85 wt. % ester-linked quaternary ammonium compound, preferably 15 to 80 wt.% ester-linked quaternary ammonium compound, more preferably 25 to 70 wt.% ester-linked quaternary ammonium compound and most preferably 35 to 70 wt. % ester-linked quaternary ammonium compound by weight of the composition. Particularly preferred ranges may be 30 to 60 wt.% ester-linked quaternary ammonium compound and 50 to 80 wt.% ester-linked quaternary ammonium compound.
Preservative composition
The concentrated fabric conditioners described herein comprise a preservative composition comprising at least two ingredients selected from aromatic alcohols and/or carboxylic acids. Preferably 2 to 5 ingredients selected from aromatic alcohols and/or carboxylic acids, most preferably 2 to 3 ingredients selected from aromatic alcohols and/or carboxylic acids.
The concentrated fabric conditioner compositions preferably comprise 0.01 to 5 wt.% preservative, more preferably 0.05 to 3 wt.% preservative, most preferably 0.1 to 2 wt.% preservative by weight of the composition.
The preservative composition may comprise at least two carboxylic acids, two aromatic alcohols or a carboxylic acid and an aromatic alcohol. Preferably the preservative composition comprises at least two carboxylic acids or a carboxylic acid and an aromatic alcohol. More preferably the preservative composition comprises at least a carboxylic acid and an aromatic alcohol. Most preferably the preservative composition contains at least a carboxylic acid and an aromatic alcohol.
The aromatic alcohol may be any chemical compounds containing a hydroxyl group ( — OH) bonded indirectly to an aromatic hydrocarbon group. Preferably the alcohol group is bonded to a hydrocarbon chain of 1 to 10 carbon atoms, which is bonded to the aromatic ring, more preferably 1 to 7 carbon atoms and most preferably 1 to 4 carbon atoms. Particularly preferred aromatic alcohols include benzyl alcohol and phenol ethanol.
The carboxylic acid may be any chemical compounds comprising at least one carboxylic acid group (C(=O)OH). Preferably the carboxylic acid comprises a 1 to 4 carboxylic acid groups, more preferably 1 to 3 carboxylic acid groups. Preferably the carboxylic acid comprises 1 to 10 carbon atoms, preferably 1 to 7, most preferably 1 to 4 carbon atoms. Examples of preferred carboxylic acids include citric and lactic acids. Most preferably the preservative composition comprises lactic acid.
Solvents
The compositions descried herein preferably comprise a solvent. The solvent is non-aqueous. Preferably the solvent is an organic solvent. Preferred organic solvents include hydrocarbons and/or aromatic alcohols. The solvent may comprise a mixture of suitable solvents. Particularly preferred hydrocarbons are hydrocarbons with a carbon chain comprising from 12 to 18 carbons. A particularly preferred aromatic alcohol is benzyl alcohol.
Preferably the composition comprises 5 to 80 wt. % of the solvent described herein. More preferably 10 to 65 wt. % solvent and most preferably 15 to 50 wt. % solvent by weight of the composition.
Perfumes
The compositions as described herein preferably comprise perfume. Where present, the compositions preferably comprise 0.1 to 30 wt. % perfume, i.e. free perfume and/or perfume microcapsules. As is known in the art, free perfumes and perfume microcapsules provide the consumer with perfume hits at different points during the laundry process. It is particularly preferred that the compositions of the present invention comprise a combination of both free perfume and perfume microcapsules.
Preferably the compositions of the present invention comprise 0.5 to 30 wt.% perfume materials, more preferably 1 to 20 wt.% perfume materials, most preferably 1 to 15 wt. % perfume materials.
Useful perfume components may include materials of both natural and synthetic origin. They include single compounds and mixtures. Specific examples of such components may be found in the current literature, e.g., in Fenaroli's Handbook of Flavor Ingredients, 1975, CRC Press; Synthetic Food Adjuncts, 1947 by M. B. Jacobs, edited by Van Nostrand; or Perfume and Flavor Chemicals by S. Arctander 1969, Montclair, N.J. (USA). These substances are well known to the person skilled in the art of perfuming, flavouring, and/or aromatizing consumer products.
The compositions of the present invention preferably comprise 0.5 to 20 wt.% free perfume, more preferably 0.5 to 12 wt. % free perfume.
Particularly preferred perfume components are blooming perfume components and substantive perfume components. Blooming perfume components are defined by a boiling point less than 250°C and a LogP or greater than 2.5. Substantive perfume components are defined by a boiling point greater than 250°C and a LogP greater than 2.5. Boiling point is measured at standard pressure (760 mm Hg). Preferably a perfume composition will comprise a mixture of blooming and substantive perfume components. The perfume composition may comprise other perfume components.
It is commonplace for a plurality of perfume components to be present in a free oil perfume composition. In the compositions for use in the present invention it is envisaged that there will be three or more, preferably four or more, more preferably five or more, most preferably six or
more different perfume components. An upper limit of 300 perfume components may be applied.
The compositions of the present invention preferably comprise 0.5 to 20 wt.% perfume microcapsules, more preferably 0.5 to 12 wt. % perfume microcapsules. The weight of microcapsules is of the material as supplied.
When perfume components are encapsulated, suitable encapsulating materials, may comprise, but are not limited to; aminoplasts, proteins, polyurethanes, polyacrylates, polymethacrylates, polysaccharides, polyamides, polyolefins, gums, silicones, lipids, modified cellulose, polyphosphate, polystyrene, polyesters or combinations thereof. Particularly preferred materials are aminoplast microcapsules, such as melamine formaldehyde or urea formaldehyde microcapsules.
Perfume microcapsules of the present invention can be friable microcapsules and/or moisture activated microcapsules. By friable, it is meant that the perfume microcapsule will rupture when a force is exerted. By moisture activated, it is meant that the perfume is released in the presence of water. The compositions of the present invention preferably comprise friable microcapsules. Moisture activated microcapsules may additionally be present. Examples of a microcapsules which can be friable include aminoplast microcapsules.
Perfume components contained in a microcapsule may comprise odiferous materials and/or pro-fragrance materials.
Particularly preferred perfume components contained in a microcapsule are blooming perfume components and substantive perfume components. Blooming perfume components are defined by a boiling point less than 250°C and a LogP greater than 2.5. Preferably the encapsulated perfume compositions comprises at least 20 wt.% blooming perfume ingredients, more preferably at least 30 wt.% and most preferably at least 40 wt.% blooming perfume ingredients. Substantive perfume components are defined by a boiling point greater than 250°C and a LogP greater than 2.5. Preferably the encapsulated perfume compositions comprises at least 10 wt.% substantive perfume ingredients, more preferably at least 20 wt.% and most preferably at least 30 wt.% substantive perfume ingredients. Boiling point is measured at standard pressure (760 mm Hg). Preferably a perfume composition will comprise a mixture of blooming and substantive perfume components. The perfume composition may comprise other perfume components.
It is commonplace for a plurality of perfume components to be present in a microcapsule. In the compositions for use in the present invention it is envisaged that there will be three or more, preferably four or more, more preferably five or more, most preferably six or more different perfume components in a microcapsule. An upper limit of 300 perfume components may be applied.
The microcapsules may comprise perfume components and a carrier for the perfume ingredients, such as zeolites or cyclodextrins.
Other ingredients
The compositions for use as described herein may comprise other ingredients of fabric conditioner liquids as will be known to the person skilled in the art. Among such materials there may be mentioned: antifoams, insect repellents, shading or hueing dyes, anti-viral agents, pH buffering agents, perfume carriers, hydrotropes, anti-redeposition agents, soil-release agents, polyelectrolytes, anti-shrinking agents, anti-wrinkle agents, anti-oxidants, dyes, colorants, sunscreens, anti-corrosion agents, drape imparting agents, anti-static agents, sequestrants and ironing aids. The products of the invention may contain pearlisers and/or opacifiers. A preferred sequestrant is HEDP, an abbreviation for Etidronic acid or 1 -hydroxyethane 1,1-diphosphonic acid.
The compositions are non-aqueous, however some water may be present. Preferably less than 20 wt.% water, more preferably less than 10 wt. % water and most preferably, less than 5 wt. % water by weight of the composition.
Use of the compositions
The compositions described herein are preferably used in the rinse stage of the laundry process. They may be used in their concentrated form and dosed into the laundry process. The composition may be dosed into the laundry process using a measuring cap, a pipet, a dropper or any other suitable dosing means. Preferably the composition is dosed into the rinse stage of the laundry process.
Preferably the concentrated compositions described herein may be used in unit dose capsules or in a dilute at home product.
If used in a unit dose capsule, the composition described herein may be packaged as a unit dose in polymeric film soluble in water. Preferably 2 to 15 ml are enclosed in a polymeric film.
If used in a dilute at home product, this means that the composition is sold to the consumer in a concentrated format (as described herein) and the consumer dilutes the product at home. The dilution is with water. For example, the consumer may pour the concentrated product (as described herein) into a container of water to make a more diluted product. Dilution occurs before the laundry process, in other word before the product is dosed into the washing machine or container in which the consumer is doing their laundry. Dilution allows the consumer to follow their regular dosing habits. If the composition is used in a dilute at home product, preferably the consumer is instructed to dilute using a dilution ratio of non-aqueous concentrated liquid fabric conditioner composition to water of 1:2 to 1:20, more preferably 1:3 to 1:12. The consumer may preferably be instructed the shake before use. This is particularly preferred if perfume microcapsules are present in the composition.
Diluting with water prior to being added to the laundry process means that before adding the product to the washing machine or the vessel used for hand washing, i.e. the consumer dilutes the product and then adds it to the drum or drawer of a washing machine of the vessel used for hand washing.
In one aspect of the present invention is provided a method of preserving a fabric conditioner, in particular preventing Aspergillus brasiliensis var niger growth in a fabric conditioner formulation wherein a preservative composition comprising at least two ingredients selected from aromatic alcohols and/or carboxylic acids is added to the concentrated fabric conditioner.
In another aspect of the present invention is the use of a preservative composition comprising at least two ingredients selected from aromatic alcohols and/or carboxylic acids to preserve a concentrated fabric conditioner as described herein.
Examples
Example 1 :
The compatibility of various preservatives in a concentrated fabric conditioner composition was tested.
Fabric softening active1 - TEA quaternary ammonium compound
Preservative2 - see table 2
The compositions were prepared by mixing the ingredients in a beaker, then heating to ~ 65°C for 10 minutes with stirring. The compositions were left for a day then a visual assessment was then made of the compositions.
Many common preservatives are incompatible with concentrated fabric conditioner compositions.
Example 2:
The synergy between aromatic alcohol and carboxylic acid was assessed.
Fabric softening active1 - TEA quaternary ammonium compound
Preservative3 - see table 4
The compositions were prepared by mixing the ingredients in a beaker, then heating to ~ 65°C for 10 minutes with stirring.
Testing for the log reduction of Aspergillus brasiliensis varniger(a fungal species) was carried out as follows:
1. The fungus, Aspergillus brasiliensis var niger was grown on agar with media or food for the fungus.
2. When there was confluent growth with well sporulated subculture on the agar, the spores were extracted by adding between 1 and 5 ml of sterile 0.05% polysorbate 80.
3. The ‘stock’ spore suspension was transferred to a sterile container.
4. After some more processing of the spore suspension, it was diluted with saline to obtain the target concentration of micro-organisms.
5. The product samples were inoculated with yeast suspension or mould spore suspension to give final concentration of 105 CFU/g of product.
6. The inoculated product was stored at 25 +/-1oC.
7. After the defined incubation period 2 days was completed, an aliquot of the product was taken out and the number of residual spores (ultimately measured as mould colonies) in the inoculated product was measured.
8. This was done by plating the aliquot on a food I media with agar suitable for growth of mould or fungi like Sabouraud Dextrose Agar as the plating media.
9. The aliquot was first diluted to obtain a countable number on the agar plates.
In Table 4 the total preservative composition was maintained at 0.8 wt.%. Table 4 demonstrates that a preservative composition comprising two ingredients selected from aromatic alcohols and/or carboxylic acids provides improved preservation compared to the two ingredients alone.
Claims
1. A concentrated fabric conditioner formulation comprising: a) 10 wt.% to 85 wt.% cationic fabric softening active; b) 0.01 to 5 wt.% Preservative composition comprising at least two ingredients selected from aromatic alcohols and/or carboxylic acids; and c) less than 20 wt.% water.
2. A concentrated fabric conditioner composition according to any proceeding claim, wherein the preservative composition comprises at least a carboxylic acid and an aromatic alcohol.
3. A concentrated fabric conditioner composition according to any proceeding claim, wherein the preservative composition comprises lactic acid.
4. A concentrated fabric conditioner according to any preceding claim, wherein the composition comprises organic solvent.
5. A concentrated fabric conditioner according to claim 4, wherein the organic solvent comprises solvents selected form hydrocarbons and/or aromatic alcohols.
6. A unit dose product comprising the concentrated fabric conditioner composition according to claims 1 to 5 enclosed in a polymeric film.
7. A method of using the concentrated fabric conditioner according to claims 1 to 5, wherein the concentrated fabric conditioner is diluted with water prior to addition to the laundry process.
8. A method of preserving a concentrated fabric conditioner wherein a preservative composition comprising at least two ingredients selected from aromatic alcohols and/or carboxylic acids is added to the concentrated fabric conditioner.
9. A method according to claim 8 wherein the method of preserving is a method of preventing Aspergillus brasiliensis growth in a fabric conditioner formulation.
A use of a preservative composition comprising at least two ingredients selected from aromatic alcohols and/or carboxylic acids to preserve a concentrated fabric conditioner comprising 10 wt.% to 85 wt.% cationic fabric softening active and less than 20 wt.% water.
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4137180A (en) | 1976-07-02 | 1979-01-30 | Lever Brothers Company | Fabric treatment materials |
US4547301A (en) * | 1983-05-07 | 1985-10-15 | The Procter & Gamble Company | Surfactant compositions |
US6495504B1 (en) * | 2002-07-31 | 2002-12-17 | Colgate-Palmolive Company | Unit dose nonaqueous softener disposed in water soluble container |
US20180092357A1 (en) * | 2015-04-09 | 2018-04-05 | Isp Investments Llc | Synergistic preservative compositions |
-
2023
- 2023-04-20 WO PCT/EP2023/060272 patent/WO2023222322A1/en active Search and Examination
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4137180A (en) | 1976-07-02 | 1979-01-30 | Lever Brothers Company | Fabric treatment materials |
US4547301A (en) * | 1983-05-07 | 1985-10-15 | The Procter & Gamble Company | Surfactant compositions |
US6495504B1 (en) * | 2002-07-31 | 2002-12-17 | Colgate-Palmolive Company | Unit dose nonaqueous softener disposed in water soluble container |
US20180092357A1 (en) * | 2015-04-09 | 2018-04-05 | Isp Investments Llc | Synergistic preservative compositions |
Non-Patent Citations (2)
Title |
---|
JOHNSONSHOOLERY, ANAL. CHEM., vol. 34, 1962, pages 1136 |
NOWAK KAROLINA ET AL: "Controversy around parabens: Alternative strategies for preservative use in cosmetics and personal care products", ENVIRONMENTAL RESEARCH, ACADEMIC PRESS, SAN DIEGO, CA, US, vol. 198, 19 November 2020 (2020-11-19), XP086581259, ISSN: 0013-9351, [retrieved on 20201119], DOI: 10.1016/J.ENVRES.2020.110488 * |
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