BR112019005657B1 - LAUNDRY COMPOSITION, METHOD OF PRODUCTION OF THE LAUNDRY COMPOSITION AND USE OF THE LAUNDRY COMPOSITION - Google Patents

Abstract

A laundry composition comprising 0.01 to 5% by weight of anionic silicone and a perfume, wherein the anionic group(s) on the anionic silicone is (are) located in pendant positions in the silicone and the anionic silicone and perfume are pre-mixed prior to addition to the laundry base composition. Use of the laundry composition to improve the intensity of the perfume in the composition.

Description

Technical Field of the Invention

[0001] The present invention relates to laundry compositions with an intense fragrance experience. In particular, laundry compositions comprising silicone and a perfume.

Background of the Invention

[0002] Consumers of laundry products want to intensify the fragrance experience both during and after the laundry process. Fragrance is generally thought of as an indicator of the effectiveness of a laundry product. Manufacturers are constantly striving to improve consumer fragrance experiences.

[0003] Document US 2003 0212232 (The Procter and Gamble Company) reveals that functionalized dicarboxy polyorganosiloxanes can be used in home care formulations, particularly in cleaning, rinsing or care compositions, with the aim of conferring benefits above surfaces, for example, to improve the residuality, impact and/or effectiveness of active materials contained in said compositions on surfaces treated with them. It is further disclosed that among the other additive agents and/or common actives that form part of the formulation are included perfumes.

[0004] US 2007 0225198 (The Procter & Gamble Company) discloses fabric wash compositions comprising selected organosilicones that are formulated into microemulsions for improved deposition onto fabrics to provide fabric care benefits. The compositions comprise an organosilicone and another laundry adjunct material which may be a perfume.

[0005] Document US 2002 0148994 (Givaudan SA) discloses a fabric composition that provides long-lasting fragrance retention, bad odor reduction and wrinkle reduction. This composition includes a water-soluble silicone, a fragrance composition and an aqueous vehicle containing an emulsifier.

[0006] While these disclosures show compositions with improved fabric care and fragrance retention, there remains a need to further enhance a consumer's fragrance experience, particularly the intensity of the fragrance experience after washing.

Summary of the Invention

[0007] In one embodiment of the invention, there is provided a laundry composition comprising an anionic silicone and a perfume, wherein the anionic group(s) in the anionic silicone is(are) located in pendant positions on the silicone and the anionic silicone and perfume are pre-mixed prior to addition to the laundry base composition.

[0008] In another embodiment, a method of producing the composition for washing clothes comprising the steps of:

[0009] - preparation of a premix of anionic silicone and perfume

[0010] - addition of the premix to a basic composition for washing clothes.

[0011] In another embodiment, there is provided a use of the laundry composition to improve the perfume intensity of the laundry composition.

Detailed Description of the Invention anionic silicone

[0012] Silicones and their chemistry are described, for example, in The Encyclopaedia of Polymer Science, volume 11, p765.

[0013] The anionic group(s) in the anionic silicones of the present invention are located in pendent positions in the silicone, that is, the composition comprises anionic silicones in which the anionic group is located in a position other than in the end of the silicone chain. The terms 'terminal position' and 'at the end of the silicone chain' are used to indicate the termination of the silicone chain.

[0014] When silicones are linear in nature, there will be two ends to the silicone chain. In that case, the anionic silicone preferably does not contain anionic groups located at a terminal position of the silicone.

[0015] When silicones are branched in nature, the terminal position is considered to be the two ends of the longest linear silicone chain. Preferably, no anionic functionality is located at the end of the longest linear silicone chain.

[0016] Preferred anionic silicones are those comprising the anionic group at an intermediate chain position in the silicone. Preferably, the anionic group(s) of the anionic silicone is (are) located at least five Si atoms from a terminal position on the silicone. Preferably, the anionic groups are randomly distributed along the silicone chain.

[0017] Examples of anionic silicones suitable for the present invention include silicones comprising the following functionalities: carboxylic, sulfate, sulfonic, phosphate and/or phosphonate functionality.

[0018] Preferably, the anionic silicones of the present invention comprise silicones having a functionality selected from: carboxylic, sulfate, sulfonic, phosphate and/or phosphonate functionality or mixtures thereof. More preferably, the anionic silicone of the present invention comprises carboxylic functionality. An even greater preference is for the anionic silicone of the present invention to be a carboxylic silicone.

[0019] For the purposes of the present invention, the anionic silicone may be in the form of an acid or anion. For example, a silicone with a carboxylic function may be present in the form of a carboxylic acid or carboxylate anion.

[0020] An example of a commercially available material is: X22-3701E from Shin Etsu and Pelosil PS-100 from Pheonix Chemical.

[0021] Preferably, the anionic silicone has a molecular weight of 1,000 to 100,000, more preferably 2,000 to 50,000, and even more preferably 5,000 to 50,000.

[0022] Preferably, the anionic silicone has an anionic group content of at least 1 mol%, preferably at least 2 mol%.

[0023] The silicone composition of the present invention may be in the form of an emulsion, oil or as a silicone fluid. In a preferred embodiment, the silicone is in the form of a fluid silicone.

[0024] When silicone is in an emulsion, the particle size can be in the range of about 1 nm to 100 microns and preferably from approximately 10 nm to approximately 10 microns, including microemulsions (< 150 nm), standard emulsions (approximately 200 nm to approximately 500 nm) and macroemulsions (approximately 1 micron to approximately 20 microns).

[0025] Laundry compositions according to the present invention preferably comprise anionic silicone at a level of 0.01 to 5% by weight of the formulation, more preferably 0.1 to 2.5% by weight of the formulation.

Fragrance

[0026] A perfume according to the present invention is defined as a composition comprising top, middle and bottom notes. A perfume composition according to the present invention comprises from 3 to 300 different perfume components. Preferably, the perfume comprises more than 4, more preferably more than 5, most preferably more than 6 different perfume components, with an upper limit of 300 perfume components.

[0027] The useful compounds of perfume include materials of natural and synthetic origin. They include unique compounds and blends. Specific examples of these components can be found in the current literature, for example 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). Such substances are well known to those skilled in the art of perfumery, flavoring and/or consumer flavoring products.

[0028] Particularly preferred perfume ingredients are ingredients that exude perfume and give substance to it. Perfume exhalation ingredients are defined by a boiling point less than 250 °C and a LogP greater than 2.5. Substantive perfume ingredients are defined by a boiling point greater than 250 °C and a LogP greater than 2.5. Preferably, the perfume composition will comprise a mixture of exhalation ingredients and perfume substance. The perfume composition may comprise other perfume ingredients. The perfume composition may comprise other perfume ingredients, for example pro-fragrance.

[0029] The laundry composition of the present invention preferably comprises from 0.01 to 20% by weight of perfume, more preferably from 0.25 to 15% by weight of perfume, most preferably from 0.1 to 10% by weight perfume weight.

Perfume and anionic silicone premix

[0030] The perfume and the anionic silicone are premixed before addition to the laundry composition. The mixture may comprise silicone perfume fluid, silicone perfume oil or silicone perfume emulsion.

[0031] The premix can be homogeneous or non-homogeneous.

[0032] In a preferred embodiment, the perfume and the anionic silicone form an emulsion. The emulsion does not require an emulsifier, however, in some embodiments, an emulsifier may be present. Examples of suitable emulsifiers include anionic and non-ionic surfactants.

[0033] In a more preferred embodiment, the premix is in the form of an emulsion formed from silicone fluid and perfume.

Perfume reason: silicone

[0034] In the laundry compositions of the present invention, the ratio of perfume to anionic silicone is preferably from 20:1 to 1:10. More preferably, the ratio of perfume to anionic silicone is from 20:1 to 1:1.

Compositions for washing clothes

[0035] The term laundry composition means any composition that can be used during the laundry process. For example, a pre-treatment, a main wash composition (including detergent compositions and auxiliary compositions for additional benefits), a product added in the rinse, for example, a fabric softener composition, a post wash treatment or a refreshing spray. The compositions can be in any physical form, for example a solid such as a powder or granules, a tablet, a solid bar, a paste, gel or liquid.

[0036] The active component in the compositions is preferably a surfactant or a fabric softening agent. More than one active component can be included and, for some applications, a mixture of active components can be used. For example, a main wash product may include a fabric softening agent and the rinse product may include a surfactant.

[0037] In a preferred embodiment, the composition is a main wash or rinse product comprising a fabric softening agent.

Main wash product

[0038] The detergent compositions of the invention may suitably comprise:

[0039] (a) from 5 to 60% by weight, preferably from 10 to 40% by weight, of organic surfactant,

[0040] (b) optionally from 5 to 80% by weight, preferably from 10 to 60% by weight, of detergent builder,

[0041] (c) optionally other detergent components up to 100% by weight.

[0042] The detergent compositions of the invention may contain a surface tension compound (surfactant) which may be selected from anionic, cationic, nonionic, amphoteric and zwitterionic soap and non-soap surfactant compounds, or mixtures thereof. Several suitable surfactant compounds are available and are fully described in the literature, for example in "Surface-Active Agents and Detergents", Volumes I and II, by Schwartz, Perry and Berch.

[0043] The preferred active detergent compounds that can be used are anionic and nonionic synthetic soaps and non-soap compounds.

[0044] The compositions of the invention may contain linear alkylbenzene sulfonate, particularly linear alkylbenzene sulfonates having an alkyl chain length of C8-C15. This is preferred if the level of linear alkylbenzene sulfonate ranges from 0% by weight to 30% by weight, more preferably from 1% by weight to 25% by weight, most preferably from 2% by weight to 15% by weight. .

[0045] The compositions of the invention may contain other anionic surfactants in amounts additional to the percentages mentioned above. Suitable anionic surfactants are well known to those skilled in the art. Examples include primary and secondary alkyl sulfates, particularly C8-C15 primary alkyl sulfates; alkyl ether sulfates; olefin sulfonates; alkylxylene sulfonates; dialkyl sulfosuccinates; and fatty acid ester sulfonates. Sodium salts are generally preferred.

[0046] The compositions of the invention may also contain nonionic surfactant. Nonionic surfactants that can be used include the primary and secondary alcohol ethoxylates, especially the C8 to C20 aliphatic alcohols ethoxylated with an average of 1 to 20 moles of ethylene oxide per mole of alcohol, and more especially the primary and secondary aliphatic alcohols C10 to C15 ethoxylated with an average of 1 to 10 moles of ethylene oxide per mole of alcohol. Non-ethoxylated nonionic surfactants include alkylpolyglycosides, glycerol monoethers, and polyhydroxyamides (glucamide).

[0047] It is preferred if the level of non-ionic surfactant ranges from 0% by weight to 30% by weight, preferably from 1% by weight to 25% by weight, most preferably from 2% by weight to 15% by weight .

[0048] It is also possible to include certain monoalkyl cationic surfactants that can be used in compositions for the main wash of fabrics. Cationic surfactants that can be used include quaternary ammonium salts of the general formula R1R2R3R4N+ X-, where the R groups are long or short hydrocarbon chains, typically alkyl, hydroxyalkyl or ethoxylated alkyl groups, and X is a counterion (e.g. (e.g. compounds in which R1 is a C8-C22 alkyl group, preferably a C8-C10 or C12-C14 alkyl group, R2 is a methyl group, and R3 and R4, which may be the same or different, are methyl or hydroxyethyl groups) ; and cationic esters (eg choline esters).

[0049] The choice of surface tension compound (surfactant) and the amount present will depend on the intended use of the detergent composition. In compositions for washing fabrics, different surfactant systems can be chosen, as is well known to formulators, for products for hand washing and for products intended for use in different types of washing machines.

[0050] Detergent compositions suitable for use in most automatic fabric washing machines generally contain anionic non-soap surfactant, or nonionic surfactant, or combinations of the two in any suitable proportion, optionally with soap.

fabric softening agent

[0051] Any conventional fabric softening agent can be used in the compositions of the present invention. Softening agents can be cationic or non-ionic. For example, they can be used in amounts from 3% to 35%, preferably from 4% to 30%, more preferably from 5% to 25% by weight of the composition.

[0052] The softening active for use in the rinse-off conditioning compositions of the invention is preferably a quaternary ammonium compound (QAC). Preferred quaternary ammonium compounds for use in the compositions of the present invention are so-called "quaternary esters" which comprise an ester linkage. Particularly preferred materials are ester-linked triethanolamine quaternary ammonium (TEA) compounds comprising a mixture of mono-, di-, and triester-linked components. More preferably, the ester linked quaternary ammonium compound is an ester linked triethanolamine quaternary ammonium compound comprising unsaturated fatty chains.

[0053] Typically, TEA-based active fabric softeners comprise a mixture of mono-, di-, and tri-ester forms of the compound where the diester-linked compound comprises not more than 70% by weight of the fabric softening compound, preferably not more than 60%, for example 55%, or 45% of the fabric softening compound and at least 10% of the monoester bound component, for example 11% monoester. A preferred solidified active type has a typical mono:di:triester distribution of 18 to 22 monoester: 58 to 62 diester: 18 to 22 triester; for example, 20:60:20. A soft quaternary TEA may have a typical mono:di:triester distribution of 25 to 45%, preferably 30 to 40% monoester: 45 to 60%, preferably 50 to 55% diester: and 5 to 25%, preferably from 10 to 15% triester; for example, 40:50:10.

[0054] A first group of quaternary ammonium compounds (QACs) suitable for use in the present invention is represented by formula (I):

[0055] wherein each R is independently selected from a C5-35 alkyl or alkenyl group; R1 represents a C1-4 alkyl, C2-4 alkenyl or C1-4 hydroxyalkyl group; T is usually O-CO (i.e. an ester group attached to R through its carbon atom), but may alternatively be CO-O (i.e. an ester group attached to R through 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 counterion, such as an alkyl halide or sulfate, for example, chloride or methylsulfate. Diester variants of formula I (i.e. m = 2) are preferred and usually have mono and triester analogues associated with them. These materials are particularly suitable for use in the present invention.

[0056] Especially preferred agents are preparations that are rich in diesters of triethanolammonium methyl sulfate, otherwise referred to as “TEA quaternary esters”.

[0057] Commercial examples include Stepantex™ UL85, ex Stepan, Prapagen™ TQL, ex Clariant, and Tetranyl™ AHT-1, ex Kao, (both di-[hardened tallow ester] of triethanolammonium methyl sulfate), AT-1 (triethanolammonium di-[tallow ester] methyl sulfate), and L5/90 (triethanolammonium methyl sulfate di-[palm ester]), both ex Kao, and Rewoquat™ WE15 (a triethanolammonium methyl sulfate diester having residues of fatty acyl deriving from C10-C20 and C16-C18 unsaturated fatty acids), ex Evonik.

[0058] Also suitable are soft quaternary ammonium actives such as Stepantex VK90, Stepantex VT90, SP88 (ex-Stepan), Ceca Noramine, Prapagen TQ (ex-Clariant), Dehyquart AU-57 (ex-Cognis), Rewoquat WE18 ( ex-Degussa) and Tetranyl L190 P, Tetranyl L190 SP and Tetranyl L190 S (all ex-Kao).

[0059] A second group of QACs suitable for use in the invention is represented by formula (II):

[0060] wherein each R1 group is independently selected from C1-4 alkyl, hydroxyalkyl or C2-4 alkenyl groups; and wherein each R2 group is independently selected from C8-28 alkyl or alkenyl groups; and wherein n, T and X- are as defined above.

[0061] Preferred materials of this second group include 1,2-bis[tallow oiloxy]-3-trimethylammonium propane chloride, 1,2-bis[tallow oiloxy]-3-trimethylammonium propane chloride, 1,2 -bis[oleoyloxy]-3-trimethylammonium propane and 1,2-bis[stearoyloxy]-3-trimethylammonium propane chloride. These materials are described in document US 4,137,180 (Lever Brothers). Preferably, these materials also comprise a corresponding amount of monoester.

[0062] A third group of QACs suitable for use in the invention is represented by formula (III):

[0063] wherein each R1 group is independently selected from C1-4 alkyl, or C2-4 alkenyl groups; and wherein each R2 group is independently selected from C8-28 alkyl or C8-28 alkenyl groups; and n, T and X- are as defined above. Preferred materials from this third group include bis(2-tallow oyloxy ethyl)dimethyl ammonium chloride and hardened versions thereof.

[0064] The iodine number of the quaternary ammonium fabric softening material is preferably from 0 to 80, more preferably from 0 to 60, and most preferably from 0 to 45. The iodine number can be chosen as appropriate. Essentially saturated material having an iodine number of 0 to 5, preferably 0 to 1 can be used in the compositions of the invention. Such materials are known as "hardened" quaternary ammonium compounds.

[0065] A further preferred range of iodine numbers is 20 to 60, preferably 25 to 50, most preferably 30 to 45. A material of this type is a "soft" triethanolamine quaternary ammonium compound, preferably triethanolamine dialkyl ester methyl sulfate . These ester linked triethanolamine quaternary ammonium compounds comprise unsaturated fatty chains.

[0066] The 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 an NMR spectroscopy method, as described in Anal. Chem., 34, 1136 (1962) Johnson and Shoolery.

[0067] An additional type of softener compound can be a non-ester quaternary ammonium material represented by formula (IV):

[0068] wherein each R1 group is independently selected from C1-4 alkyl, hydroxyalkyl or C2-4 alkenyl groups; each R2 group is independently selected from C8-28 alkyl and alkenyl groups, and X- is as defined above.

[0069] This is advantageous if the quaternary ammonium material is biologically biodegradable.

[0070] Other useful cationic softening agents are alkyl pyridinium salts and substituted imidazoline species. Also useful are primary, secondary and tertiary amines and condensation products of fatty acids with alkylpolyamines.

[0071] The compositions may alternatively or additionally contain water-soluble cationic fabric softeners as described in GB 2 039 556B (Unilever).

[0072] The compositions may comprise a cationic fabric softener compound and an oil, for example as disclosed in EP-A-0829531.

[0073] The compositions may alternatively or additionally contain non-ionic fabric softening agents, for example lanolin and derivatives thereof.

[0074] Lecithins and other phospholipids are also suitable softening compounds.

[0075] In fabric softener compositions, a non-ionic stabilizing agent may be present. Suitable nonionic stabilizing agents may be present, such as C8 to C22 linear alkoxylated alcohols with 10 to 20 moles of alkylene oxide, C10 to C20 alcohols, or mixtures thereof. Other stabilizing agents include deflocculating polymers as described in EP 0415698A2 and EP 0458599 B1.

[0076] Advantageously, the non-ionic stabilizing agent is a C8 to C22 linear alcohol alkoxylated with 10 to 20 moles of alkylene oxide. Preferably, the level of nonionic stabilizer is within the range of 0.1 to 10% by weight, more preferably 0.5 to 5% by weight, most preferably 1 to 4% by weight. The molar ratio between the quaternary ammonium compound and/or other cationic softening agent and the nonionic stabilizing agent is suitably in the range of 40:1 to about 1:1, preferably in the range of 18:1 to about 3: 1.

[0077] The composition may also contain fatty acids, for example, or C8 to C24 alkyl or alkenyl monocarboxylic acids or polymers thereof. Preferably, saturated fatty acids are used, in particular C16 to C18 hardened tallow fatty acids. Preferably the fatty acid is unsaponified, more preferably the fatty acid is free, for example oleic acid, lauric acid or tallow fatty acid. The level of fatty acid material is preferably greater than 0.1% by weight, more preferably greater than 0.2% by weight. Concentrated compositions may comprise from 0.5 to 20% by weight of fatty acid, more preferably from 1% to 10% by weight. The weight ratio between the quaternary ammonium material or other cationic softening agent and the fatty acid material preferably ranges from 10:1 to 1:10.

Other polymers

[0078] The compositions may comprise one or more polymers, these may be present in addition to a detergent or fabric softener or as an alternative thereto. Polymers suitable for use in the composition include cleaning polymers, heat control polymers,

Claims (13)

1. Composition for washing clothes, characterized by comprising from 0.01 to 5% by weight of anionic silicone and a perfume, in which the anionic group(s) in the anionic silicone is (are) located( s) in pendant positions on the silicone and the anionic silicone and perfume are pre-mixed prior to addition to the laundry base composition. 2. Composition for washing clothes, according to claim 1, characterized in that the composition for washing clothes additionally comprises a cationic deposition polymer. 3. Composition for washing clothes, according to claim 2, characterized by the cationic deposition polymer comprising a cationic polysaccharide. 4. Composition for washing clothes, according to any one of the preceding claims, characterized in that the anionic silicone is a silicone fluid. 5. Composition for washing clothes, according to any one of the preceding claims, characterized in that the anionic silicone comprises a functionality selected from among: carboxylic functionality, sulfate, sulfonic, phosphate and/or phosphonate or mixtures thereof. 6. Composition for washing clothes, according to any one of the preceding claims, characterized by the anionic silicone comprising the carboxyl functionality. 7. Composition for washing clothes, according to any one of the preceding claims, characterized in that the anionic silicone has a molecular weight of 1,000 to 100,000. 8. Composition for washing clothes, according to any one of the preceding claims, characterized in that the anionic silicone has functionality of at least 1 mole %. 9. Composition for washing clothes, according to any one of the preceding claims, characterized by the pre-mixture of anionic silicone and perfume forming an emulsion. 10. Composition for washing clothes, according to any one of the preceding claims, characterized in that the composition for washing clothes comprises from 0.01 to 20% by weight of perfume. 11. Composition for washing clothes, according to any one of the preceding claims, characterized in that the ratio between perfume and anionic silicone is from 20:1 to 1:10. 12. Method of producing the composition for washing clothes, as defined in any of the preceding claims, characterized in that it comprises the steps of: - preparing a pre-mixture of anionic silicone and perfume - adding the pre-mixture to a composition of basis for washing clothes. 13. Use of the composition for washing clothes, as defined in any one of the preceding claims, characterized in that it is intended to improve the perfume intensity of the composition for washing clothes.