(19)
(11)EP 2 331 058 B2

(12)NEW EUROPEAN PATENT SPECIFICATION
After opposition procedure

(45)Date of publication and mention of the opposition decision:
09.05.2018 Bulletin 2018/19

(45)Mention of the grant of the patent:
29.04.2015 Bulletin 2015/18

(21)Application number: 09782669.7

(22)Date of filing:  07.09.2009
(51)Int. Cl.: 
A61K 8/73  (2006.01)
A61Q 19/00  (2006.01)
A61K 8/892  (2006.01)
(86)International application number:
PCT/EP2009/061525
(87)International publication number:
WO 2010/040609 (15.04.2010 Gazette  2010/15)

(54)

UNIVERSAL SENSORY STRUCTURANT

UNIVERSELLES SENSORISCHES STRUKTURGEBENDES MITTEL

STRUCTURANT SENSORIEL UNIVERSEL


(84)Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

(30)Priority: 08.10.2008 US 247488

(43)Date of publication of application:
15.06.2011 Bulletin 2011/24

(73)Proprietors:
  • Unilever PLC
    London Greater London EC4P 4BQ (GB)
    Designated Contracting States:
    CY GB IE MT 
  • Unilever N.V.
    3013 AL Rotterdam (NL)
    Designated Contracting States:
    AT BE BG CH CZ DE DK EE ES FI FR GR HR HU IS IT LI LT LU LV MC MK NL NO PL PT RO SE SI SK SM TR 

(72)Inventor:
  • POLONKA, Jack
    Trumbull, Connecticut 06611 (US)

(74)Representative: Corsten, Michael Allan 
Unilever N.V. Unilever Patent Group Olivier van Noortlaan 120
3133 AT Vlaardingen
3133 AT Vlaardingen (NL)


(56)References cited: : 
EP-A1- 1 230 914
WO-A1-2008//028900
US-B1- 6 348 090
WO-A1-2005/107695
US-A1- 2008 063 619
  
     
    Remarks:
    The file contains technical information submitted after the application was filed and not included in this specification
     


    Description

    FIELD OF THE INVENTION



    [0001] The present invention is directed to universal sensory structurants and a method for making the same. More particularly the present invention is directed to sensory structurants comprising a polysaccharide carbohydrate comprising at least 75% by weight amylopectin wherein the carbohydrate has been treated and swollen with a solvent comprising hydroxylated polymer according to claim 1. The universal sensory modifiers of this invention can be used in formulating topical compositions which unexpectedly result in superior sensory benefits after application.

    BACKGROUND OF THE INVENTION



    [0002] Many consumers are concerned with the characteristics of their skin. For example consumers are concerned with the degree of pigmentation of their skin, freckles and/or age spots. Other consumers are concerned with skin imperfections that include wrinkles, large pores, acne and/or an oily appearance.

    [0003] While it is desirable for consumers to hide or mask skin imperfections with topical compositions, such compositions tend to leave the consumer with poor sensory sensations. For example conventional skin lightening compositions formulated with silicone elastomers can be tacky and oily, thereby yielding an unpleasant feel during the skin lightening process.

    [0004] There is an increasing interest to develop topical compositions that deliver a benefit to the consumer yet do not result in undesirable sensory sensations upon application. This invention, therefore, is directed to universal sensory structurants comprising a polysaccharide carbohydrate comprising at least 75% by weight amylopectin wherein the carbohydrate has been treated and swollen with a solvent comprising hydroxylated polymer according to claim 1. The universal sensory structurants of this invention can be used in formulating topical compositions which unexpectedly result in superior sensory benefits after application.

    [0005] Efforts have been disclosed for making topical compositions that provide skin benefits. In US 2007/0237730 A1, cosmetic compositions with soft focus properties are described.

    [0006] Other efforts have been disclosed for making topical compositions that provide skin benefits. In US 7 247 294 and US 7 250 158, skin lightening agents and compositions are described.

    [0007] Still other efforts have been disclosed for making topical compositions that provide skin benefits. In US 7 192 598, wet-skin treatment compositions are described.

    [0008] None of the additional information above describes a universal sensory structurant comprising a polysaccharide carbohydrate comprising at least 75% by weight amylopectin wherein the carbohydrate has been treated and swollen with a solvent according to claim 1. Moreover, none of the additional information above describes a topical composition comprising a universal sensory structurant as described herein.

    SUMMARY OF THE INVENTION



    [0009] In a first aspect, the present invention is directed to a universal sensory structurant comprising a polysaccharide carbohydrate comprising at least 75% by weight amylopectin, wherein the carbohydrate has been treated and swollen with a solvent, the solvent comprising a hydroxylated polymer according to claim 1.

    [0010] In a second aspect, the present invention is directed to a method for making the universal sensory structurant of the first aspect of this invention, the method comprising the steps of:
    1. (a) contacting a polysaccharide carbohydrate comprising at least 75% by weight amylopectin with a solvent, the solvent comprising a hydroxylated polymer according to claim 1 and
    2. (b) heating the mixture to produce the sensory structurant.


    [0011] In a third aspect, the present invention is directed to a topical composition comprising the universal sensory structurant of the first aspect of this invention.

    [0012] All other aspects of the present invention will more readily become apparent upon considering the detailed description and examples which follow.

    [0013] Topical composition, as used herein, is meant to mean a composition suitable for application onto skin of humans. Skin, as used herein, includes the skin on the face, neck, chest, back, arms, axilla, hands, legs and scalp. Treated, as used herein, means coming into contact in order to induce swelling. Swollen, as used herein, means at least about doubling in size. Comprising, as used herein, is meant to include consisting essentially of and consisting of. Comprising at least 75% by weight amylopectin means at least 75% by weight amylopectin based on total weight of the polysaccharide carbohydrate. Free of gellation or no gellation means showing no endothermic gellation peak when analyzing, with a differential scanning calorimeter (DSC Q2000 from TA Instruments), mixtures of universal sensory structurant and water (50/50 and 30/70 by weight, respectively), heated at 1°C/minute and scanned from 25 to 82°C.

    [0014] The topical composition of the present invention can be in the form of a liquid, lotion, cream, serum, gel, soap bar or toner, or applied via a face mask, or patch. The topical composition of the present invention is preferably one that at the very least lightens skin, moisturizes skin and/or provides anti-aging benefits to the skin, where anti-aging benefits are meant to include reducing the effect of sunlight on the skin. All ranges identified herein are meant to implicitly include all ranges subsumed therein if for example, reference to the same is not explicitly made.

    DETAILED DESCRIPTION OF THE PREFERRED EMBODIENTS



    [0015] There is generally no limitation with respect to the polysaccharide carbohydrate comprising at least 75% by weight amylopectin that may be used in this invention other than that the same is suitable for use in topical compositions. Preferred polysaccharide carbohydrate suitable for use in this invention comprises from about 78 to about 100%, and most preferably from about 80 to about 100% by weight amylopectin, based on total weight of the polysaccharide carbohydrate and including all ranges subsumed therein. Typically such polysaccharide carbohydrate has an initial (unswollen) average particle diameter from about 1 to 15 microns, and preferably from about 2 to about 12 microns, and most preferably from about 5 to about 9 microns, including all ranges subsumed therein. Moreover such a polysaccharide carbohydrate typically comprises from about 0.5 to about 30%, and preferably from about 2 to about 25%, and most preferably from about 6 to about 22% by weight water, based on total weight of the polysaccharide carbohydrate and including all ranges subsumed therein. The often desired polysaccharide carbohydrate comprising at least 75% by weight amylopectin that may be used in this invention is waxy corn starch, tapioca or a mixture thereof whereby the waxy corn starch and tapioca are commercially available from suppliers like National Starch and Chemical Company as well as Millennium Food Tech Co. Ltd.

    [0016] The solvent suitable for use in this invention comprises a hydroxylated polymer comprising 5 to 50 siloxane repeat units, wherein the polymer is a dimethiconol.

    [0017] In a desired embodiment, the hydroxylated polymer comprises less than about 10%, and preferably from 0.1 to about 8% by weight hydroxy group, where hydroxylated is meant to mean having Si-OH bonds and/or HO - X - Si bonds where X is a C1-6 linear, branched or cyclic alkyl bridging radical. The hydroxylated polymer is preferably hydroxy-terminated dimethiconol made commercially available from Shin Etsu and sold under the names RF 700, KF 9701 and X-21-5841 whereby such dimethiconol contains less than about 10%, and preferably less than about 5%, and most preferably less than about 3% by weight dimethicone based on total weight of dimethiconol and dimethicone. In another especially preferred embodiment, it is desirable to add plasticizer to the solvent described herein wherein plasticizer, when used, makes up from about 0.5 to about 30%, and preferably, from about 5 to about 25%, and most preferably from about 10 to about 20% by weight of the total weight of solvent and plasticizer, including all ranges subsumed therein.

    [0018] Solvent, therefore, can comprise, consist essentially of or consist of polymer or contain plasticizer. Plasticizers suitable for use include, for example, phthalate esters, sorbate esters, and/or alkyl benzoates like methyl-, ethyl- or propyl benzoate.

    [0019] When making the universal sensory structurant of the present invention, polysaccharide carbohydrate and solvent comprising hydroxylated polymer according to claim 1 are combined at a weight ratio from about 1:4 to about 4:1, and preferably from about 1:3 to about 3:1, and most preferably from about 2:3 to about 3:2. The combined polysaccharide carbohydrate and solvent mixture is typically heated to a temperature from about 55 to about 90°C, and preferably from about 65 to about 85°C, and most preferably from about 70 to about 80°C. The combined polysaccharide carbohydrate and solvent mixture is typically heated for about 0.5 to about 6 hours, and preferably from about 1 to about 5 hours, and most preferably from about 1.5 to about 4.5 hours.

    [0020] The resulting universal sensory structurant (i.e. swollen polysaccharide carbohydrate structurant) has polysaccharide carbohydrate with a final average particle diameter that is from about 1.5 to about 6, and preferably from about 2 to about 5, and most preferably from about 2.5 to about 3.5 times greater than the initial average particle diameter of the polysaccharide carbohydrate. In an especially preferred embodiment, the polysaccharide carbohydrate is functionally modified (i.e. surface modified) with a C10-C16 alkyl and/or alkenyl group, and preferably a C12-C14 alkyl and/or alkenyl group. Typically from about 0.01 to about 6, and preferably from about 0.03 to about 4, and most preferably from about 0.1 to about 3% by weight of the polysaccharide carbohydrate is functionalized, based on total weight of the polysaccharide carbohydrate.

    [0021] When preparing the topical composition of this invention, typically the same comprises from about 0.02 to about 15% and preferably from about 0.1 to about 10%, and most preferably from about 0.3 to about 8% by weight of the universal sensory structurant. Moreover, and in another preferred embodiment, the topical composition of this invention is substantially free of (i.e. <2% by weight of the composition) silicone elastomers. In a most preferred embodiment, the topical compositions of this invention comprise from about 0.0 to less than about 0.5% by weight silicone elastomer.

    [0022] It should be known that commercially acceptable and conventional vehicles may be used, acting as diluents, dispersants and/or carriers for the topical composition described herein. Therefore the cosmetically acceptable vehicle suitable for use in this invention may be aqueous-based, anhydrous or an emulsion whereby a water-in-oil or oil-in-water emulsion is generally preferred. If the use of water is desired, water typically makes up the balance of the topical composition, and preferably makes up from about 5 to about 99%, and most preferably from over 50 to about 90% by weight of the topical composition, including all ranges subsumed therein.

    [0023] In addition to water, organic solvents may be optionally included to act as carriers or to assist carriers within the compositions of the present invention. Illustrative and non-limiting examples of the types of organic solvents suitable for use in the present invention include alkanols like ethyl and isopropyl alcohol, mixtures thereof or the like.

    [0024] Other optional additives suitable for use include ester oils like isopropyl myristate, cetyl myristate, 2-octyldodecyl myristate, avocado oil, almond oil, olive oil, neopentylglycol dicaprate, mixtures thereof or the like. Typically such ester oils assist in emulsifying the topical composition of this invention, and an effective amount is often used to yield a stable, and most preferably water-in-oil emulsion.

    [0025] Emollients may also be used, if desired, as carriers within the topical composition of the present invention. Alcohols like 1-hexadecanol (i.e. cetyl alcohol) are often desired as are the emollients generally classified as silicone oils and synthetic esters. Silicone oils, while not required, can be used and they include cyclic or linear polydimethylsiloxanes containing from 3 to 9, preferably from 4 to 5, silicon atoms. Non-volatile silicone oils useful as an emollient material in the topical composition described herein include polyalkyl siloxanes, polyalkylaryl siloxanes and polyether siloxane copolymers.

    [0026] The ester emollients that may optionally be used are:
    1. (1) Alkenyl or alkyl esters of fatty acids having 10 to 20 carbon atoms. Examples thereof include isoarachidyl neopentanoate, isononyl isonanonoate, oleyl myristate, oleyl stearate, and oleyl oleate.
    2. (2) Ether-esters such as fatty acid esters of ethoxylated fatty alcohols.
    3. (3) Polyhydric alcohol esters. Ethylene glycol mono- and di-fatty acid esters, diethylene glycol mono-and di-fatty acid esters, polyethylene glycol (200-6000) mono- and di-fatty acid esters, propylene glycol mono- and di-fatty acid esters, polypropylene glycol 2000 monooleate, polypropylene glycol 2000 monostearate, ethoxylated propylene glycol monostearate, glyceryl mono- and di-fatty acid esters, polyglycerol poly-fatty esters, ethoxylated glyceryl mono-stearate, 1,3-butylene glycol monostearate, 1,3-butylene glycol distearate, polyoxyethylene polyol fatty acid ester, sorbitan fatty acid esters and polyoxyethylene sorbitan fatty acid esters are satisfactory polyhydric alcohol esters.
    4. (4) Wax esters such as beeswax, spermaceti, stearyl stearate and arachidyl behenate.
    5. (5) Sterol esters, of which cholesterol fatty acid esters are examples.


    [0027] Emollients, when used, typically make up from about 0.1 to about 50% by weight of the topical composition, including all ranges subsumed therein.

    [0028] Fatty acids having from 10 to 30 carbon atoms may also be included as cosmetically acceptable carriers within the composition of the present invention. Illustrative examples of such fatty acids include pelargonic, lauric, myristic, palmitic, stearic, isostearic, oleic, linoleic, arachidic, behenic or erucic acid, and mixtures thereof. Compounds that are believed to enhance skin penetration, like dimethyl sulfoxide, may also be used as an optional carrier.

    [0029] Humectants of the polyhydric alcohol type may also be employed in the topical composition of this invention. The humectant often aids in increasing the effectiveness of the emollient and improves skin feel. Typical polyhydric alcohols include glycerol, polyalkylene glycols and more preferably alkylene polyols and their derivatives, including propylene glycol, dipropylene glycol, polypropylene glycol, polyethylene glycol and derivatives thereof, sorbitol, hydroxypropyl sorbitol, hexylene glycol, 1,3-butylene glycol, 1,2,6-hexanetriol, ethoxylated glycerol, propoxylated glycerol and mixtures thereof. For best results the humectant is preferably propylene glycerol or sodium hyaluronate. The amount of humectant may range anywhere from 0.2 to 25%, and preferably from about 0.5 to about 15% by weight of the topical composition, based on total weight of the composition and including all ranges subsumed therein.

    [0030] Thickeners may also be utilized as part of the cosmetically acceptable carrier in the topical composition of the present invention. Typical thickeners include cross-linked acrylates (e.g. Carbopol 982), hydrophobically-modified acrylates (e.g. Carbopol 1382), taurate copolymers like acrylamide/sodium acryloyldimethyltaurate copolymer, ammonium acryloyldimethyltaurate/VP copolymer (e.g. Simulgel® made available by Seppic, Aristoflex® AVC made available by Clariant), cellulosic derivatives and natural gums. Among useful cellulosic derivatives are sodium carboxymethylcellulose, hydroxypropyl methylcellulose, hydroxypropyl cellulose, hydroxyethyl cellulose, ethyl cellulose and hydroxymethyl cellulose. Natural gums suitable for the present invention include guar, xanthan, sclerotium, carrageenan, pectin and combinations of these gums. Amounts of the thickener may range from 0.0 to 5%, usually from 0.001 to 5%, optimally from 0.01 to 2% by weight of the total weight of the composition. In an often preferred embodiment, taurate copolymers are used in the topical compositions of this invention.

    [0031] Collectively, the water, solvents, silicones, esters, fatty acids, humectants and/or thickeners will constitute the cosmetically acceptable carrier in amounts from 1 to 99.9%, preferably from 80 to 99% by weight.

    [0032] Surfactants may also be present in topical composition of the present invention. Total concentration of the surfactant will range from about 0 to about 40%, and preferably from about 0 to about 20%, optimally from about 0 to about 5% by weight of the composition. The surfactant may be selected from the group consisting of anionic, nonionic, cationic and amphoteric actives. Particularly preferred nonionic surfactants are those with a C10-C20 fatty alcohol or acid hydrophobe condensed with from 2 to 100 moles of ethylene oxide or propylene oxide per mole of hydrophobe; mono- and di- fatty acid esters of ethylene glycol; fatty acid monoglyceride; sorbitan, mono- and di- C8-C20 fatty acids; block copolymers (ethylene oxide/propylene oxide); and polyoxyethylene sorbitan as well as combinations thereof. Alkyl polyglycosides and saccharide fatty amides (e.g. methyl gluconamides) are also suitable nonionic surfactants.

    [0033] Preferred anionic surfactants include soap, alkyl ether sulfate and sulfonates, alkyl sulfates and sulfonates, alkylbenzene sulfonates, alkyl and dialkyl sulfosuccinates, C8-C20 acyl isethionates, acyl glutamates, C8-C20 alkyl ether phosphates and combinations thereof.

    [0034] Perfumes may be used in the composition of this invention. Illustrative non-limiting examples of the types of perfumes that may be used include those described in Bauer, K., et al. Common Fragrance and Flavor Materials, VCH Publishers (1990).

    [0035] Illustrative yet non-limiting examples of the types of fragrances that may be used in this invention include myrcene, dihydromyrenol, citral, tagetone, cis-geranic acid or citronellic acid, mixtures thereof or the like.

    [0036] Preferably the amount of fragrance employed in the topical composition of this invention is in the range from about 0.0% to about 10%, more preferably about 0.00001% to about 5 wt %, most preferably about 0.0001% to about 2%.

    [0037] Various types of active ingredients may be used in the topical compositions of the present invention. Actives are defined as skin benefit agents other than emollients and other than ingredients that merely improve the physical characteristics of the composition. Although not limited to this category, general examples include talcs and silicas, as well as alpha-hydroxy acids, beta-hydroxy acids, peroxides, zinc salts and sunscreens.

    [0038] Beta-hydroxy acids include salicylic acid, for example. Zinc pyrithione is an example of the zinc salts useful in the topical composition of the present invention.

    [0039] Sunscreens include those materials commonly employed to block ultraviolet light. Illustrative compounds are the derivatives of PABA, cinnamate and salicylate. For example, avobenzophenone (Parsol 1789®), octyl methoxycinnamate and 2-hydroxy-4-methoxy benzophenone (also known as oxybenzone) can be used. Octyl methoxycinnamate and 2-hydroxy-4-methoxy benzophenone are commercially available under the trademarks, Parsol MCX and Benzophenone-3, respectively. The exact amount of sunscreen employed in the compositions can vary depending upon the degree of protection desired from the sun's UV radiation. Additives that reflect or scatter the suns rays may also be employed. These additives include oxides like zinc oxide and titanium dioxide.

    [0040] Many topical compositions, especially those containing water, should be protected against the growth of potentially harmful microorganisms. Anti-microbial compounds, such as triclosan, and preservatives are, therefore, typically necessary. Suitable preservatives include alkyl esters of p-hydroxybenzoic acid, hydantoin derivatives, propionate salts, and a variety of quaternary ammonium compounds. Particularly preferred preservatives of this invention are methyl paraben, propyl paraben, phenoxyethanol and benzyl alcohol. Preservatives will usually be employed in amounts ranging from about 0.1% to 2% by weight of the composition.

    [0041] Still other ingredients that may be used with the topical composition of this invention include dioic acids (e.g. malonic acid and sebacic acid), antioxidants like vitamin E, other vitamins, like vitamin C and its derivatives, recorcinols and its derivatives (including those esterified with, for example, ferulic acid, vanillic acid or the like) and retinoids, including retinoic acid, retinal, retinol and retinyl esters, conjugated linoleic acid, petroselinic acid, plant extracts including Kudzu and Chamomile extracts, and mixtures thereof, as well as any other conventional ingredients well known for wrinkle-reducing, skin whitening (especially niacinamide), anti-acne effects and reducing the impact of sebum. When desired, these ingredients typically make up from about 0.01 to about 10 percent by weight of the topical composition.

    [0042] When making topical composition of the present invention, the desired ingredients, including the universal sensory structurant, are mixed, in no particular order, and usually at temperatures from about ambient to about 80°C and under atmospheric pressure.

    [0043] The packaging for the composition of this invention can be a patch, bottle, tube, roll-ball applicator, propellant driven aerosol device, squeeze container or lidded jar.

    [0044] The examples which follow are provided to illustrate and facilitate an understanding of the invention. The examples are not intended to limit the scope of the claims.

    Example 1



    [0045] One part by weight solvent comprising a hydroxylated polymer comprising siloxane repeat units was combined with one part by weight a polysaccharide carbohydrate comprising at least 75% by weight amylopectin. The resulting mixture was heated to about 70°C for about three hours. The polysaccharide carbohydrate used contained about 10 percent by weight water.
    SolventPolysaccharide CarbohydrateΔ SizeSolvent characteristics
    Dow Corning ST-dimethiconol 40 Corn Starch 25% Dihydroxylated, 200 silane units
    Dow Corning ST-dimethiconol 40 Tapioca 70% Dihydroxylated, 200 silane units
    Dow Corning ST-dimethiconol 40 Waxy corn starch 80% Dihydroxylated, 200 silane units
    Shin Etsu RF700 Corn starch 50% Dihydroxylated, 100 silane units
    Shin Etsu RF700 Tapioca 100% Dihydroxylated, 100 silane units
    Shin Etsu RF700 Waxy corn starch 120% Dihydroxylated, 100 silane units
    Shin Etsu KF 9701 Corn starch 70% Dihydroxylated, 45 silane units
    Shin Etsu KF 9701 Tapioca 115% Dihydroxylated, 45 silane units
    Shin Etsu KF 9701 Waxy corn starch 150% Dihydroxylated, 45 silane units
    Shin Etsu X-21-5841 Corn starch 80% Dihydroxylated, 15 silane units
    Shin Etsu X-21-5841 Tapioca 125% Dihydroxylated, 15 silane units
    Shin Etsu X-21-5841 Waxy corn starch 170% Dihydroxylated, 15 silane units


    [0046] The results indicate that polysaccharide carbohydrate consistent with this invention in combination with solvent consistent with this invention yields excellent polysaccharide carbohydrate swelling (Δ size = the percent increase in size of the polysaccharide carbohydrate) and no gellation when mixed with water. Corn starch contained about 71% by weight amylopectin, waxy corn starch contained about 100% by weight amylopectin and tapioca was about 83% by weight amylopectin.

    Examples 2-29



    [0047] Commercially available moisturizers, such as Dove® Proage® Beauty Body Lotion were modified and assessed as described below. Waxy corn starch and tapioca deplete of alkyl and/or alkenyl functionalization did swell as well as functionalized polysaccharide carbohydrate. Skilled panelists assessed all modified compositions. Universal sensory structurants were prepared by heating at 70°C for three hours, 50% by weight polysaccharide carbohydrate and 50% by weight solvent (dimethiconol).
    1. A. Compositions made in examples 2 and 3 were prepared with 1 and 2% by weight tapioca, respectively. As tapioca increased, negative sensory (draggy, non-silky) attributes were realized in the commercially available moisturizers.
    2. B. Compositions made in examples 4 and 5 were prepared with 1 and 2% by weight universal sensory structurant, respectively, made according to this invention (50% by weight tapioca, 50% by weight solvent). As universal sensory structurant increased, the composition became more silky with excellent sensory benefits.
    3. C. Compositions made in examples 6 and 7 were prepared in a manner similar to the one used to make the compositions of example 4 and 5 except that C12 alkyl functionalized (2%) tapioca was used. Assessment revealed exceptional sensory performance, increasing with the addition of universal sensory structurant.
    4. D. Compositions made in examples 8 and 9 were prepared in a manner similar to the one described in examples 2 and 3 except that 1% by weight of taurate copolymer (e.g. Simulgel) was also used. Sensory benefits were not realized.
    5. E. Compositions made in examples 10 and 11 were prepared in a manner similar to the one described in examples 4 and 5 except that 1% by weight of taurate copolymer (e.g. Simulgel) was also added. Sensory benefits of the compositions were even better than the benefits realized for the compositions of examples 4 and 5.
    6. F. Compositions made in examples 12 and 13 were prepared in a manner similar to the one described in examples 6 and 7 except that C12 alkyl functionalized (2%) tapioca was used. Assessment revealed exceptional sensory performance, increasing with the addition of universal sensory structurant.
    7. G. Compositions made in examples 14 and 15 were prepared with 1% potato starch (80-120 microns in diameter). Processing in solvent was performed similar to the manner described in examples 4 and 5. All compositions made were draggy and had poor sensory attributes even upon the addition of taurate copolymer.
    8. H. Compositions made in examples 16-29 were made via methods similar to the ones described in examples 2-15 except that waxy corn starch (100% amylopectin) was used in lieu of tapioca. The results show the same trends except that waxy corn starch was even better than tapioca since it had better swelling characteristics in solvent.


    [0048] The results indicate that universal sensory structurants prepared according to this invention yield compositions with very desirable sensory benefits and especially, when a functionalized polysaccharide carbohydrate is used with a taurate copolymer. No gellation was observed when compositions were made consistent with this invention.

    Example 30



    [0049] Compositions in this example were prepared using universal sensory structurant prepared with tapioca starch in a manner similar to the one described in examples 6 and 7 and 12 and 13, except that plasticizer (e.g. propyl benzoate) at 10 to 30% by weight was added to the solvent (based on total weight of solvent). The results indicated that compositions with plasticizer were softer and more elastic than compositions without the plasticizer.


    Claims

    1. A universal sensory structurant comprising a polysaccharide carbohydrate comprising at least 75% by weight amylopectin, wherein the polysaccharide carbohydrate has been treated and swollen with a solvent, the solvent comprising a hydroxylated polymer comprising from 5 to 50 siloxane repeat units, wherein the polymer is a dimethiconol; and wherein the polysaccharide carbohydrate has a final average particle diameter that is from 1.5 to 6 times greater than the initial average particle diameter of the polysaccharide carbohydrate.
     
    2. A universal sensory structurant according to claim 1 wherein the polysaccharide carbohydrate comprises from 78 to 100% by weight amylopectin.
     
    3. A universal sensory structurant according to any one of the preceding claims wherein the polysaccharide carbohydrate is selected from the group consisting of tapioca, waxy corn starch and a mixture thereof.
     
    4. A universal sensory structurant according to any one of the preceding claims wherein the hydroxylated polymer comprises less than 10% by weight hydroxyl groups.
     
    5. A universal sensory structurant according any one of claims 1 to 4 wherein the dimethiconol contains less than 10% by weight dimethicone based on total weight of dimethiconol and dimethicone.
     
    6. A universal structurant according to any one of the preceding claims wherein the polysaccharide carbohydrate is functionally modified with a C10-C16 alkyl and/or alkenyl group.
     
    7. A universal structurant according to any one of the preceding claims further comprising taurate copolymer.
     
    8. A topical composition comprising:

    (a) a universal sensory structurant according to any one of the preceding claims; and

    (b) a cosmetically acceptable carrier.


     
    9. A topical composition according to claim 8 wherein the solvent further comprises a plasticizer.
     
    10. A topical composition according to claim 8 or claim 9 wherein the topical composition lightens skin, moisturizes skin and/or provides anti-aging benefits to skin.
     
    11. A method for making a universal sensory structurant comprising the steps of:

    (a) contacting a polysaccharide carbohydrate comprising at least 75% by weight amylopectin with a solvent, the solvent comprising hydroxylated polymer comprising 5 to 50 siloxane repeat units to produce a mixture, wherein the polymer is a dimethiconol;

    (b) heating the mixture at a temperature of from 55°C to 90°C for 0.5 to 6 hours; and

    (c) recovering universal sensory structurant.


     


    Ansprüche

    1. Universelles sensorisches strukturbildendes Mittel,
    das ein Polysaccharid-Kohlenhydrat aufweist, das mindestens 75 Gew.-% Amylopectin aufweist, wobei das Polysaccharid-Kohlenhydrat mit einem Lösungsmittel behandelt und gequollen ist, wobei das Lösungsmittel ein hydroxyliertes Polymer aufweist, das 5 bis 50 Siloxan-Struktureinheiten aufweist, wobei das Polymer ein Dimethiconol ist, und wobei das Polysaccharid-Kohlenhydrat einen finalen durchschnittlichen Partikeldurchmesser aufweist, der 1,5 bis 6 mal größer als der anfängliche durchschnittliche Partikeldurchmesser des Polysaccharid-Kohlenhydrats ist.
     
    2. Universelles sensorisches strukturbildendes Mittel nach Anspruch 1, wobei das Polysaccharid-Kohlenhydrat 78 bis 100 Gew.-% Amylopectin aufweist.
     
    3. Universelles sensorisches strukturbildendes Mittel nach einem der vorstehenden Ansprüche, wobei das Polysaccharid-Kohlenhydrat aus der Gruppe ausgewählt ist, die aus Maniokstärke, wachsartiger Maisstärke und einem Gemisch davon besteht.
     
    4. Universelles sensorisches strukturbildendes Mittel nach einem der vorstehenden Ansprüche, wobei das hydroxylierte Polymer weniger als 10 Gew.-% Hydroxylgruppen aufweist.
     
    5. Universelles sensorisches strukturbildendes Mittel nach einem Ansprüche 1 bis 4, wobei das Dimethiconol weniger als 10 Gew.-% Dimethicon enthält, und zwar auf das Gesamtgewicht von Dimethiconol und Dimethicon bezogen.
     
    6. Universelles sensorisches strukturbildendes Mittel nach einem der vorstehenden Ansprüche, wobei das Polysaccharid-Kohlenhydrat mit einer C10-C16-Alkyl- und/oder -Alkenylgruppe funktionell modifiziert ist.
     
    7. Universelles sensorisches strukturbildendes Mittel nach einem der vorstehenden Ansprüche, das ferner ein Tauratcopolymer aufweist.
     
    8. Topische Zusammensetzung,
    die Folgendes aufweist:

    (a) ein universelles sensorisches strukturbildendes Mittel nach einem der vorstehenden Ansprüche; und

    (b) einen kosmetisch akzeptablen Träger.


     
    9. Topische Zusammensetzung nach Anspruch 8, wobei das Lösungsmittel ferner einen Weichmacher aufweist.
     
    10. Topische Zusammensetzung nach Anspruch 8 oder 9, wobei die topische Zusammensetzung die Haut aufhellt, die Haut feucht hält und/oder Alterungsschutzvorteile für die Haut bietet.
     
    11. Verfahren zum Herstellen eines universellen sensorischen strukturbildenden Mittels,
    das die folgenden Schritte aufweist:

    (a) Inkontaktbringen eines Polysaccharid-Kohlenhydrats, das mindestens 75 Gew.-% Amylopectin aufweist, mit einem Lösungsmittel, wobei das Lösungsmittel hydroxyliertes Polymer aufweist, das 5 bis 50 Siloxan-Struktureinheiten aufweist, um ein Gemisch zu erzeugen, wobei das Polymer ein Dimethiconol ist;

    (b) Erwärmen des Gemischs für 0,5 bis 6 Stunden bei einer Temperatur von 55 bis 90 °C; und

    (c) Gewinnen des universellen sensorischen strukturbildenden Mittels.


     


    Revendications

    1. Structurant sensoriel universel comprenant un carbohydrate de polysaccharide comprenant au moins 75 % en poids d'amylopectine, dans lequel le carbohydrate de polysaccharide a été traité et gonflé avec un solvant, le solvant comprenant un polymère hydroxylé comprenant de 5 à 50 unités répétitives de siloxane, dans lequel le polymère est un diméthiconol ; et dans lequel le carbohydrate de polysaccharide présente un diamètre moyen de particule final qui est de 1,5 à 6 fois plus important que le diamètre moyen de particule initial du carbohydrate de polysaccharide.
     
    2. Structurant sensoriel universel selon la revendication 1, dans lequel le carbohydrate de polysaccharide comprend de 78 à 100 % en poids d'amylopectine.
     
    3. Structurant sensoriel universel selon l'une quelconque des revendications précédentes, dans lequel le carbohydrate de polysaccharide est choisi dans le groupe constitué de tapioca, d'amidon de maïs cireux et d'un mélange de ceux-ci.
     
    4. Structurant sensoriel universel selon l'une quelconque des revendications précédentes, dans lequel le polymère hydroxylé comprend moins de 10 % en poids de groupes hydroxyle.
     
    5. Structurant sensoriel universel selon l'une quelconque des revendications 1 à 4, dans lequel le diméthiconol contient moins de 10 % en poids de diméthicone rapporté au poids total de diméthiconol et de diméthicone.
     
    6. Structurant universel selon l'une quelconque des revendications précédentes, dans lequel le carbohydrate de polysaccharide est fonctionnellement modifié avec un groupe alkyle et/ou alcényle en C10-C16.
     
    7. Structurant universel selon l'une quelconque des revendications précédentes comprenant de plus un copolymère de taurate.
     
    8. Composition topique comprenant :

    (a) un structurant sensoriel universel selon l'une quelconque des revendications précédentes ; et

    (b) un support cosmétiquement acceptable.


     
    9. Composition topique selon la revendication 8, dans laquelle le solvant comprend de plus un plastifiant.
     
    10. Composition topique selon la revendication 8 ou la revendication 9, dans laquelle la composition topique éclaircit la peau, hydrate la peau et/ou fournit des bénéfices anti-âges à la peau.
     
    11. Procédé de fabrication d'un structurant sensoriel universel comprenant les étapes :

    (a) de mise en contact d'un carbohydrate de polysaccharide comprenant au moins 75 % en poids d'amylopectine avec un solvant, le solvant comprenant un polymère hydroxylé comprenant de 5 à 50 unités répétitives de siloxane pour produire un mélange, dans lequel le polymère est un diméthiconol,

    (b) de chauffage du mélange à une température de 55°C à 90°C pendant de 0,5 à 6 heures ; et

    (c) de récupération du structurant sensoriel universel.


     




    REFERENCES CITED IN THE DESCRIPTION



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    Patent documents cited in the description




    Non-patent literature cited in the description