ES2564372T3 - Tissue treatment - Google Patents

Abstract

Use of a particle having a particle size within the range of from 10 nm to 1000 µm, wherein the particle comprises a polymer shell and a core; wherein the core comprises a phase change active, which is a material having a thermal phase transition temperature within the range of 24 to 39°C, to provide longevity of freshness to the wearer of treated garments, in the that the particle is a component of a composition comprising a perfume.

Description

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It is preferred that the DPE or RSE have 3 or more, preferably 4 or more ester or ether groups. If the CPE is a disaccharide, it is preferred that the disaccharide has 3 or more ester or ether groups. Particularly preferred CPEs are esters with an esterification degree of 3 to 5, for example, tri-, tetra- and penta-sucrose esters.

In cases where the cyclic polyol is a reducing sugar, it is advantageous that each ring of the CPE has an ester or ether group, preferably in the C1 position. Suitable examples of said compounds include methyl glucose derivatives.

Examples of suitable CPEs include alkyl (poly) glycoside esters, in particular alkyl glycoside esters having a degree of polymerization of 2.

The length of unsaturated (and saturated, if present) chains in the CPE or RSE is C8-C22, preferably C12-C22. It is possible to include one or more C1-C8 chains, however, these are less preferred.

Liquid or soft solid CPEs or RSEs that are suitable for use in the present invention are characterized as being materials having a solid: liquid ratio between 50:50 and 0: 100 at 20 ° C, determined by the relaxation time T2 by NMR , preferably between 43:57 and 0: 100, most preferably between 40:60 and 0: 100, such as, 20:80 and 0: 100. The relaxation time T2 determined by NMR is commonly used for the characterization of solid: liquid relationships in soft solid products such as fats and margarines. For the purpose of the present invention, any component of the signal with a T2 of less than 100 µs is considered to be a solid component and any component of the signal with a T2 ≥100 µs is considered to be a liquid component.

For CPEs and RSEs, prefixes (for example, tetra and penta) only indicate average degrees of esterification. The compounds exist as a mixture of materials that vary from the monoester to the fully esterified ester. It is the average degree of esterification that is used in the present invention to define the CPEs and RSEs.

The HLB of the CPE or RSE is typically between 1 and 3.

When present, the CPE or RSE is preferably present in the composition in an amount of 0.5-50% by weight, based on the total weight of the composition, more preferably 1-30% by weight, such as 2-25 %, for example 2-20%.

CPEs and RSEs for use in the compositions of the invention include sucrose tetraoleate, sucrose pentaerucate, sucrose tetraerucate and sucrose pentaoleate.

Co-softeners and fatty complexing agents

Co-softeners can be used. When used, these are typically present from 0.1 to 20% and particularly from 0.5 to 10%, based on the total weight of the composition. Preferred softeners include fatty esters, and fatty N-oxides. Fatty esters that can be used include fatty monoesters, such as glycerol monostearate, fatty sugar esters, such as those disclosed in WO 01/46361 (Unilever).

Compositions for use in the present invention may comprise a fatty complex forming agent.

Especially suitable fatty complexing agents include fatty alcohols and fatty acids. Of these, fatty alcohols are the most preferred.

The fatty complex forming material can be used to improve the viscosity profile of the composition.

Preferred fatty acids include hydrogenated tallow fatty acid (available under the trademark PristereneTM, from Uniquema). Preferred fatty alcohols include hydrogenated tallow alcohol (available under the trademarks Stenol ™ and Hydrenol ™, from Cognis, and Laurex CS, from Allbritht and Wilson).

The fatty complex forming agent is preferably present in an amount greater than 0.3 to 5% by weight, based on the total weight of the composition. More preferably, the fatty component is present in an amount of from 0.4 to 4%. The weight ratio of the mono-ester component of the quaternary ammonium fabric softener material to the fatty complex forming agent is preferably from 5: 1 to 1: 5, more preferably 4: 1 to 1: 4, most preferably 3: 1 to 1: 3, for example 2: 1 to 1: 2.

Nonionic Surfactant

Compositions for use in the present invention may further comprise a nonionic surfactant. Typically, these may be included for the purpose of stabilizing the compositions. These are particularly suitable for compositions comprising hydrogenated quaternary ammonium compounds.

Suitable non-ionic surfactants include addition products of ethylene oxide and / or propylene oxide with fatty alcohols, fatty acids and fatty amines. Any of the alkoxylated materials of the particular type described later in the present invention can be used as the non-ionic surfactant.

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wherein ring D and E can independently be naphthyl or phenyl, as shown; R1 is selected from: hydrogen and C1-C4 alkyl, preferably hydrogen;

5 R2 is selected from: hydrogen, C1-C4 alkyl, substituted or unsubstituted phenyl and substi naphthyl

tuido or unsubstituted, preferably phenyl; R3 and R4 are independently selected from: hydrogen, C1-C4 alkyl, preferably hydrogen or methyl;

X and Y are independently selected from: hydrogen, C1-C4 alkyl, and C1-C4 alkoxy; prefe

The dye is probably X = methyl; and, Y = methoxy and n is 0.1 or 2, preferably 1 or 2. Preferred dyes are direct violet 7, direct violet 9, direct violet 11, direct violet 26, direct violet 31, direct violet 35, direct violet 40, direct violet 41, direct violet 51, and direct violet 99, colorants containing bis-azo copper, such as direct violet 66, can be used.

Benzidene-based dyes are less preferred. Preferably, the direct dye is present from 0.00001% by weight to 0.0010% by weight of the formulation.

In another embodiment, the direct dye may be covalently bound to the photo bleach, for example as described in WO 2006/024612. Acid dyes The substantive acid dyes of cotton provide benefits to the garments that contain the

20 cotton Preferred dyes and mixtures of dyes are blue and violet. Preferred acid dyes are: (i) azine dyes, in which the dye is of the following core structure:

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wherein Ra, Rb, Rc and Rd are selected from H, a branched or linear C1 to C7 alkyl chain, benzyl, a

25 phenyl, and a naphthyl;

the dye is substituted with at least one SO3-or -COO- group;

ring B does not carry a negatively charged group or a salt thereof;

and ring A may also be substituted to form a naphthyl;

the dye is optionally substituted by groups selected from amine, methyl, ethyl, hydroxyl,

Methoxy, ethoxy, phenoxy, Cl, Br, I, F, and NO2;

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Preferred azine dyes are: acid blue 98, acid violet 50, and acid blue 59, more preferably acid violet 50 and acid blue 98.

Other non-azine acid dyes are acid violet 17, acid black 1 and acid blue 29.

Preferably, the acid dye is present from 0.0005% by weight to 0.01% by weight of the formulation.

Hydrophobic dyes

The composition for use in the invention may comprise one or more hydrophobic dyes selected from benzodifurans, methine, triphenylmethanes, naphthalimides, pyrazole, naphthoquinone, anthraquinone and mono-azo dyes and di-azo chromophores. Hydrophobic dyes are dyes that do not contain any solubilizing group of charged water. Hydrophobic dyes may be selected from the groups of dispersed dyes and solvents. Blue and violet anthraquinone and mono-azo dye are preferred.

Preferred dyes include solvent violet 13, dispersed violet 27, dispersed violet 26, dispersed violet 28, dispersed violet 63 and dispersed violet 77.

Preferably, the hydrophobic dye is present from 0.0001% by weight to 0.005% by weight of the formulation.

Basic dyes

Basic dyes are organic dyes that carry a positive net charge. They are deposited on cotton. They are of particular utility to be used in compositions containing predominantly cationic surfactants. The dyes can be selected from the basic violet and basic blue dyes listed in the Color Index International.

Preferred examples include triarylmethane basic dyes, methane basic dye, anthraquinone basic dyes, basic blue 16, basic blue 65, basic blue 66, basic blue 67, basic blue 71, basic blue 159, basic violet 19, basic violet 35 , basic violet 38, basic violet 48, basic blue 3, basic blue 75, basic blue 95, basic blue 122, basic blue 124, basic blue 141.

Reactive dyes

Reactive dyes are dyes that contain an organic group capable of reacting with cellulose and binding the dye to cellulose with a covalent bond. They are deposited on cotton.

Preferably, the reactive group is hydrolyzed or the reactive group of the dyes has been reacted with an organic species such as a polymer, in order to bind the dye to this species. The dyes can be selected from the reactive violet and reactive blue dyes listed in the Color Index International.

Preferred examples include reactive blue 19, reactive blue 163, reactive blue 182 and reactive blue 96.

Coloring conjugates

The dye conjugates are formed by binding direct, acidic or basic dyes to polymers or particles by physical forces.

Depending on the choice of polymer or particle, they are deposited on cotton or synthetics. A description is given in WO 2006/055787. They are not preferred.

Particularly preferred dyes are: direct violet 7, direct violet 9, direct violet 11, direct violet 26, direct violet 31, direct violet 35, direct violet 40, direct violet 41, direct violet 51, direct violet 99, acid blue 98, acid violet 50, acid blue 59, acid violet 17, acid black 1, acid blue 29, solvent violet 13, dispersed violet 27, dispersed violet 26, dispersed violet 28, dispersed violet 63, dispersed violet 77 and mixtures thereof.

Fragrance

Compositions for use in the present invention comprise one or more perfumes. The perfume is preferably present in an amount of from 0.01 to 10% by weight, more preferably from 0.05 to 5% by weight, even more preferably from 0.1 to 4.0% by weight, most preferably from 0.15 to 4.0% by weight, based on the total weight of the composition.

Useful components of the perfume include materials of both natural and synthetic origin. These include individual compounds and mixtures. Specific examples of such components can be found in the current literature, for example, in the Fenaroli´s Handbook of Flavor Ingredients, (1975), CRC Press; Synthetic Food Adjuncts, (1947) by M. B. Jacobs, edited by Van Nostrand; o Perfume and Flavor Chemicals by S. Arctander, (1969), Montclair, N.J. (USES). These substances are well known to persons skilled in the art of perfuming, dressing, and / or flavoring consumer products, that is, imparting a smell and / or an aroma or flavor to

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no, comic alcohol, m-toluquinoline, 6-methylquinoline, lepidin, 2-ethylbenzaldehyde, 4-ethylbenzaldehyde, o-ethylphenol, pethylphenol, m-ethylphenol, (+) - polegone, 2,4-dimethylbenzaldehyde, isoxyaldehyde, ethyl sorbate , benzyl propionate, 1,3-dimethylbutyl acetate, isobutyl isobutanoate, 2,6-xylenol, 2,4-xylenol, 2,5-xylenol, 3,5-xylenol, methyl cinnamate, hexyl methyl ether, benzyl ethyl ether, methyl salicylate, butyl propyl ketone, ethyl amyl ketone, hexyl methyl ketone, 2,3xylenol, 3,4-xylenol, cyclopentadenanolide and phenyl ethyl 2-phenylacetate.

It is common for a plurality of perfume components to be present in a formulation. In the compositions for use in the present invention, it is considered that there will be four or more, preferably five or more, more preferably six or more or even seven or more different perfume components from the list of delayed flowering perfumes given above and / or the list of perfume components with a ClogP above 3 present in the perfume.

Another group of perfumes with which the present invention can be applied are the so-called "aromatherapy" materials. These include many components equally used in perfumery, including essential oil components such as amaro, eucalyptus, geranium, lavender, macia extract, neroli, nutmeg, mint spicata, sweet violet leaf and Valerian.

Additional Optional Ingredients

The compositions of the invention may contain one or more other ingredients. Such ingredients include additional preservatives (e.g., bactericides), pH buffering agents, perfume vehicles, hydrotropes, anti-redeposition agents, dirt release agents, polyelectrolytes, anti-shrinkage agents, anti-wrinkle agents, anti-oxidants , sunscreens, anti-corrosion agents, folding dispensing agents, anti-static agents, ironing aids, silicones, antifoams, dyes, nacrents and / or opacifiers, oils / natural extracts, treatment aids, for example, electrolytes, agents Hygiene, for example, antibactericides and antifungal agents, thickeners and beneficial agents for the skin.

Fabric softener compositions may also comprise viscosity modifiers. Suitable viscosity modifiers are disclosed, for example, in WO 02/081611, USA. 2004/0214736, USA 6827795, EP 0501714, USA 2003/0104964, EP 0385749 and EP 331237.

Product form

The compositions for use in the present invention are preferably softening compositions added for rinsing.

The compositions have a pH range of from about 2.6 to 6, preferably from about 2.5 to 4.5, most preferably from about 2.5 to 2.8. Compositions for use in the invention may also contain pH modifiers, such as hydrochloric acid or lactic acid.

A composition for use in the invention is preferably in liquid form. The composition may be a concentrate to be diluted in a solvent, including water, before use. Likewise, the composition may be a ready-to-use composition (in use). Preferably, the composition is supplied in the form of a ready-to-use liquid comprising an aqueous phase. The aqueous phase may comprise water soluble species, such as mineral salts or short chain (C1-4) alcohols.

The composition is preferably for use in the rinse cycle of a domestic textile washing operation, in which it can be added directly in an undiluted state to a washing machine, for example, by means of a dispensing drawer or, for a Top loading washing machine, directly inside the drum. As an alternative, it can be diluted before use. Likewise, the compositions can be used in a domestic hand wash laundry operation. Likewise, it is possible for the compositions of the present invention to be used in industrial laundry operations, for example, as a finishing agent for softening new clothes before being sold to consumers.

Preparation

The compositions used in the invention can be prepared by any method suitable for the preparation of dispersed emulsified systems. One process involves the formation of a molten pre-mixture of the active materials in water at an elevated temperature, the addition of additional water to obtain the desired concentration of active and then cooling to room temperature. When desired, some minor ingredients such as electrolytes, coloring agents, etc. can be post-dosed. A second process involves the formation of the product by phase inversion of a hydrocarbon emulsion in water, in which the cationic material is either part of the hydrocarbon phase, or is added as a separate pre-dispersion. This process is advantageous, since this provides very finely divided hydrocarbon particles in the final product. In an alternative procedure, the encapsulated phase change asset can be postdosed in the form of an aqueous slurry.

Examples

The embodiments of the invention will be illustrated below by the following non-limiting examples. Other modifications will be obvious to the person skilled in the art.

Examples of the invention are represented by a number. Comparative examples are represented by a letter.

5 Unless otherwise stated, the amounts of components are expressed as a percentage of the total weight of the composition.

Example 1: -Preparation and composition of Tissue Conditioner 1, for use according to the invention, and Comparative Example A

Conditioner 1 and Comparative Example A were diluted liquid tissue conditioners, which comprise 10% 4.5% of softening active. Table 1 shows the compositions of Conditioner 1 and Comparative Example A.

Table 1: Composition of Tissue Conditioner 1 (% by weight, based on 100% active ingredients)

Ingredient

Tradename Supplier one TO

Active softener

TEP-88L1 FXG 5.8 5.8

Fatty alcohol

Ketostearyl alcohol - 0.2 0.2

Acid

1M HCl - 0.009 0.009

Antifoam3

Wacker SRE Wacker 0.005 0.005

Colorant

Liquitint dye Milliken 0.002 0.002

Salt

CaCl2 (10% in sol.) - 0.00125 0.00125

Fragrance

- - 0.8 0.8

Encapsulated perfume

- - 0.25 0.25

Encapsulated phase change material

Lurapret TXPMC28 - 5.0 -

Water and minor compounds2

- - Up to 100% Up to 100%

1 Cuat of soft palm-based ASD 2 Pearly, preservative, sequestrant, etc. 3 Based on 100% activity

Example 2: - Garment treatment using Conditioner 1 and Comparative Example A

15 rehearsal clothing

Black pants and white blouses were used as test garments. The clothing for the study was tailor-made for each participant in order to ensure the consistency of the design of the garment and its fit for all participants.

All garments were first washed in commercially available washing powder in an automatic washing machine 20 and air dried. The washing conditions were as follows.

Treatment with Conditioner 1 and Comparative Example A

The garments were introduced in an automatic washing machine and the rinse cycle was selected. 42 g of the fabric conditioner was added to the dispensing drawer of the washing machine. Next, the clothes were air dried.

25 Test panel procedure and conditions

A trial regime without a blind mark was adopted. The rehearsal was conducted during a hot and humid period in Bangkok and involved 30 participants who wore the clothing all day. Each participant wore the garments treated with Comparative Example and Conditioner 1 on separate days. Be

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They also included control clothing (only washed). Participants were not asked to compare one set of clothing with another. They performed approximately their normal travel and work routine, with their meals outdoors, and work indoors in offices, with air conditioning at other times. The weather was monitored during the experiment, finding that it was relatively stable, with an average of around 32 ° C / 50% relative humidity at noon.

The participants recorded the freshness levels using a questionnaire of 7 episodes of wearing the garment, mainly in the following points:

1) just when dressing

2) just when you get to work

3) just before eating

4) during the outdoor meal

5) right after eating

6) when leaving work, and

7) upon arrival at the test center.

Statistical analysis was carried out using a repeated measurement model adapted to the data; "Repeated" means that each participant in the study was measured several times. Such a model incorporates time and also reflects that there are several layers of random influences present during data collection. These layers are: the variation "within the participant" over time, the variation "between participants" due to the different characteristics of the participant and treatment and the total external random influences and measurement errors.

To describe the three sources of variability, a linear effects model was used. This model consists of a classical linear model (function in part of the controlled and observed influences) and a random effects model. Only after the adjustment of both, was the variance of the error determined. Consequently, the utility of the model is a functional description of the population trend and, for each individual, an adjustment of the deviation from this trend.

The statistical package R (version 3.1-94) was used for repeated measurement and linear mixed effect models.

The p values shown below indicate 95% confidence. The confidence data given in these examples were generated in all 7 episodes of wearing the garment.

Example 3: - Freshness imparted by garments treated with Conditioner 1 and Comparative Example A

Table 2: Assessment of longevity of freshness in the 7 episodes of use of the garment placed for only washed (control) garments and garments treated with Comparative Example A and Conditioner 1

Treatment

Episode

TO one

Just when dressing

20.58 20.89

Upon arriving at work

18.51 15.81

Before eating

8.69 12.89

Outdoor food

-0.13 9.55

After eating

0.56 16.78

Leaving work

3.10 12.64

Upon arrival rehearsal center

-5.86 13.51

Confidence level

p <0.05

The higher the number, the greater the level of freshness. It will be noted that the longevity of freshness is drastically improved in the treatment according to the invention.

Claims (1)

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