Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/73—Polysaccharides
  • A61K8/737—Galactomannans, e.g. guar; Derivatives thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/60—Sugars; Derivatives thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/60—Sugars; Derivatives thereof
  • A61K8/604—Alkylpolyglycosides; Derivatives thereof, e.g. esters
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
  • A61K8/89—Polysiloxanes
  • A61K8/891—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q19/00—Preparations for care of the skin
  • A61Q19/10—Washing or bathing preparations
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q5/00—Preparations for care of the hair
  • A61Q5/02—Preparations for cleaning the hair
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
  • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
  • A61K2800/54—Polymers characterized by specific structures/properties
  • A61K2800/542—Polymers characterized by specific structures/properties characterized by the charge
  • A61K2800/5426—Polymers characterized by specific structures/properties characterized by the charge cationic

Definitions

• the present invention relates to washing compositions. More particularly, the invention relates to compositions for washing the human body which deliver oily components to the skin or hair.
• compositions which contain both one or more oils and a surfactant so as to form an emulsion on dilution with water.
• EP 0366070 discloses bathing compositions comprising an oily- component (preferably a silicone oil, jojoba or olive oil, 2-ethyl hexanoic acid, squalene or cetyl octanoate) , a non ⁇ ionic surfactant (preferably a poly-oxyethylene alkyl ether) and a cationic polymer (preferably synthetic N,N-dimethyl- 3,5-methylenepiperidinium chloride polymer or distearyl- dimethyl-ammonium chloride polymer) .
• the compositions are generally pressed into a tablet so as to provide a convenient dosage form.
• the oily component forms an emulsion in water in the presence of the non-ionic surfactant and that the cationic polymer exerts a synergistic effect with the aforementioned emulsion to improve the texture of the skin and to suppressing dryness after bathing.
• the oil content of the bath water disclosed in EP 0366070 ranges from 2 to 500ppm, and the surfactant content of the product is such that it preferably ranges from 18-60wt% of the oil content, that is, the surfactant content is always less than the oil content so as to avoid foaming.
• the above-mentioned compositions have a skin benefit but do not clean well due to the low level of surfactant present.
• oils have a depressant effect on foam, eg. in fabric washing compositions silicone oils are used as antifoams as disclosed in US 3843558 and GB 1407997. Other oils are also known as antifoams.
• washing compositions are mild to the skin. While non-ionic surfactants are known to be particularly mild, especially as compared with anionic and cationic surfactants, non-ionic surfactants generally exhibit much worse foaming performance than ionic surfactants.
• foaming, mild washing compositions having an oily skin benefit can be formulated with:
• At least one non-ionic sugar-based surfactant said surfactant being present in weight excess over the oily component
• a water-soluble cationic polymer Suitable sugar based surfactants are selected from the group comprising the sugar-amides, sugar-ethers and sugar-esters having surfactant properties.
• the sugar based non-ionic is selected from the group comprising aldonamides, alkylpolyglycosides and mixtures thereof.
• Aldonamides are amides of aldonic acid.
• Aldonic acids are sugar substances (eg. cyclic sugars) in which the aldehyde group (generally found at the C, position on the sugar) is replaced by a carboxylic acid.
• Aldonamides can be based on sugars comprising one saccharide unit, (eg. gluconamide) , two saccharide units, (eg. lactobionamide or maltobionamide) or can be based on longer polysaccharides with an available terminal aldehyde group.
• Aldonamides are disclosed as emulsifiers in Walden, US 2752334, and as components for use in detergent compositions in our co-pending application US 07/816419.
• aldobionamide which may be used for purposes of the invention is the disaccharide lactobionamide set forth below:
• R, and R 2 are the same or different and are selected from the group consisting of hydrogen; an aliphatic hydrocarbon radical (eg., alkyl groups and alkene groups which groups may contain heteroatoms such as N, 0 or S or alkoxylated alkyl chains such as ethoxylated or propoxylated alkyl groups) , preferably an alkyl group having 8 to 24, preferably 10 to 18 carbons; an aromatic radical (including substituted or unsubstituted aryl groups and arenes); a cycloaliphatic radical; an amino acid ester, ether amines and mixtures thereof, except that R_ and R 2 cannot be hydrogen at the same time, and must have a total carbon chain length of at least 8 on average.
• an aliphatic hydrocarbon radical eg., alkyl groups and alkene groups which groups may contain heteroatoms such as N, 0 or S or alkoxylated alkyl chains such as ethoxylated or propoxylated alkyl groups
• Suitable aliphatic hydrocarbon radicals include saturated and unsaturated radicals including but not limited to methyl, ethyl, amyl, hexyl, heptyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, and octadecyl, and allyl, undecenyl, oleyl, linoleyl, linolenyl, propenyl, and heptenyl .
• Aromatic radicals are exemplified, for example, by benzyl.
• Suitable mixed aliphatic aromatic radicals are exemplified by benzyl, phenyl ethyl, and vinyl benzyl.
• Cycloaliphatic radicals are exemplified by cyclopentyl and cyclohexyl.
• Alkylpolyglycosides are known for inclusion in hair care and washing compositions, and have the advantages that they are mild, readily biodegradable and preparable from renewable resources.
• the alkyl polyglycoside may be any APG which is capable of being employed in a body or hair care composition.
• the APG is one which comprises an alkyl group connected (optionally via a bridging group) to a block of one or more glycosyl groups.
• Preferred APG's are described by the following formula:
• R is a branched or straight chain alkyl group which may be saturated or unsaturated and G is a saccharide group.
• R may represent a mean alkyl chain length of from about C 5 to about C 20 .
• R represents a mean alkyl chain length of from about C 9 to about C 12 .
• Most preferably the value of R lies between about 9.5 and about 10.5.
• G may be selected from C 5 or C 6 monosaccharide residues or mixtures of C 5 and C 6 monosaccharide residues, and is preferably a glucoside.
• G may be selected from the group comprsing glucose, xylose, lactose, fructose, mannose and derivatives thereof.
• G is glucose.
• the degree of polymerisation, n may have a value of from about 1 to about 10 or more.
• the value of n lies in the range of from about 1.1 to about 2.
• the value of n lies in the range of from about 1.3 to about 1.5.
• Suitable alkyl polyglycosides for use in the invention are commercially available and include for example those materials identified by the trademarks: Ora ix NS10 ex Seppic; APG225, APG300, APG350, APG550 and APG600 ex Henkel; BW 2762ZA, BW 2762ZB, BW 2761ZA and BW 2761ZB ex Huls; SCS 1050 and SCS 1087 ex ICI.
• the water soluble cationic polymer has a cationic charge density (as defined in US patent 3580853) greater than 0.0001 in aqueous solution.
• Cationic charge density refers to the ratio of the number of positive charges on a monomeric unit of which.the polymer is j comprised to the molecular weight of said monomeric unit.
• the preferred cationic polymer for use in the washing composition of the invention is a cationically substituted galactomannan gum.
• the gum occurs naturally as guar gum, the principal component of the seed of the guar plant, cyamopsis tetraqonalobus.
• the guar molecule is essentially a straight chain mannan branched at quite regular intervals with single membered galactose units on alternative mannose units. The mannose units are linked to each other by means of beta (1-4) glycosidic linkages. The galactose branching is accomplished through an alpha (1-6) linkage.
• the cationic derivatives are obtained by reaction between the hydroxyl groups of the polygalactomannan and reactive quaternary ammonium compounds. The degree of substitution of the cationic groups is sufficient to provide a cationic charge density of 0.0001 to 0.0017.
• the quaternary ammonium compounds which can be used for preparing the cationic agents employed in this invention are those
• R 1 , R 2 and R 3 are methyl or ethyl groups and R 4 is an epoxyalkyl group of the formula
• R 5 is a C1-C3 alkylene group and X is chlorine or bromine, Z being an anion such as Cl “ , Br “ , I “ or HSO ⁇ ,
• R represents guar gum
• quaternary ammonium derivative is hydroxypropyltrimethylammonium guar gum of the formula
• JAGUAR C-13-S Such a material is available commercially from Celanese- Stein Hall, USA under the name JAGUAR C-13-S; the word JAGUAR is a trade mark. This material also has the CTFA designation Guar Hydroxypropyltrimonium Chloride. JAGUAR C- 13-S has a cationic charge density of 0.0008. Another suitable material is that known as JAGUAR C-17 which is similar to JAGUAR C-13-S but has a higher degree of substitution of cationic groups and has a cationic charge density of 0.0016.
• a further example of a suitable guar derivative is the hydroxypropylated cationic guar derivative known as Jaguar C-16 which as well as containing the above cationic quaternary ammonium groups also contains hydroxypropyl (-CH 2 CH(OH)CH 3 ) substitutent groups.
• JAGUAR C- 16 has a cationic charge density of approximately 0.0008, the degree of substitution of the hydroxypropyl groups being 0.8 - 1.1.
• the preferred oily components are selected from natural fats and oils, preferably di glycerides having a carbon number of 24-44 and tri-glycerides having a carbon number of 30-73, more preferably, olive oil, coconut oil, and/or cacao fats: hydro-carbons, preferably liquid paraffin and/or vaseline: higher fatty acids, preferably having a branched or straight, saturated or unsaturated carbon chain length of C 12 -C 22 : higher alcohols, preferably lauryl, cetyl, stearyl, oleyl alcohols, cholesterol, and/or 2-hexyldecanol: esters, particularly isopropyl esters, preferably isopropyl myristate and/or palmitate: silicone oils, preferably dimethicone, phenyl dimethicone, dimethicone copolyol, and/or cyclomethicone.
• natural fats and oils preferably di glycerides having a carbon number of 24-44 and tri-glycerides
• the most preferred oil components are olive oil, the silicone oils, the isopropyl esters and liquid paraffin.
• compositions according to the present invention can comprise a polyol, preferably glycerol.
• Minor components are inessential but typical components of washing compositions. These can be selected from one or more of opacifiers, preferably 0.2-2.0%wt; preservatives, preferably 0.2-2.0%wt and perfumes, preferably 0.5-2.0 wt%. Optional components include colouring agents, germicides, anti-oxidants and preservatives.
• compositions comprise (on product) :
• oily component fall in the range 3-20wt% on product, more preferably 4-10wt%.
• Preferred levels of non-ionic sugar based surfactant fall in the range 10-30wt% on product.
• the preferred ratio of the oily component to the sugar based non-ionic surfactant falls in the range 1:1.5-1:6, higher ratios being preferred for concentrated products, typical ratios for non-concentrates being 1:1.5 to 1:4.
• ORAMIX NS-10 An alkylpolyglucoside, available in the marketplace from SEPPIC.
• APG-600 An alkylpolyglucoside, (PLANTAREN) available in the marketplace from HENKEL.
• Rl hydrogen
• R2 being derived from the fatty acids of coconut (Cocos nuctifera) fat (predominantly C 12 ) .
• Brij 76 Alcohol ethoxylate (C18, EO average 10) non-ionic surfactant as supplied by ATLAS.
• BC89/138 silicone oil available as an emulsion (containing 50%wt silicone) from the Basildon Chemical Company Ltd.
• compositions were prepared with formulations as given in table 1 below.
• the JAGUAR C13-S was made up into a 2wt% solution from powder, all other components were used as supplied in the quantities given.
• compositions were prepared by adding the actives to water, under shear, followed by addition of the oil, any glycerol, and polymer, preservatives and perfume in sequence. Mixing was performed at room temperature.
• Foam values given in Table 1 are foam heights in cm using a cylinder shaking method.
• 0.25 ml of product was introduced into 50mls of water in a 200ml stoppered measuring cylinder and shaken vigorously 30 times by hand. Each shake involved a vertical up/down motion of 30cm and, on average, twenty shakes occurred every 5 seconds. After shaking the stoppers were removed and the initial foam height was measured.
• Examples 1-6 of the present invention and comparative examples 7-10 show that typical foam volumes of 1.5-9.0 (expressed in terms of foam height) are obtained with formulations comprising conventional non-ionics (examples 7- 9) even when very high levels of ethoxylation are used (compare 7 with 8-10) .
• foam volumes are particularly bad in the presence of silicone oil (compare examples 8: 0.5 with oil and 9: 2 without oil) . The limits of error in these examples are around 1 unit.
• Example 6 which contained C 12 lactobionamide as the sole surfactant component is an example of a solid formulation.
• Examples 1-5 exhibit much higher foam volumes in the presence of oil, than comparable formulations (examples 7,8 and 10, with conventional non-ionics) in the presence of oil. This illustrates how formulations based on conventional non-ionic surfactants, would not achieve the benefit of the present invention in terms of foam volume. It is believed that this is due to the foam-breaking effects of oil on surfactant systems as well as the relatively poor foaming behaviour of non-ionics.
• Silicone deposition was measured using X-ray fluorescence in arbitrary units. It can be seen from the results that all of the compositions deposit at least 0.26 units of silicone which is a satisfactory level of deposition. While the conventional non-ionic formulations of comparative examples 8 and 10 exhibit high levels of silicone deposition, they do not have acceptable foam behaviour as discussed above.

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• 1992
  • 1992-08-07 GB GB929216767A patent/GB9216767D0/en active Pending
• 1993
  • 1993-07-31 WO PCT/EP1993/002059 patent/WO1994003150A1/en not_active Application Discontinuation
  • 1993-07-31 AU AU47060/93A patent/AU4706093A/en not_active Abandoned
  • 1993-07-31 CA CA002141878A patent/CA2141878A1/en not_active Abandoned
  • 1993-07-31 JP JP6505007A patent/JPH07509706A/ja active Pending
  • 1993-07-31 BR BR9306851A patent/BR9306851A/pt not_active Application Discontinuation
  • 1993-07-31 EP EP93917727A patent/EP0653933A1/en not_active Withdrawn
  • 1993-08-06 ZA ZA935731A patent/ZA935731B/xx unknown

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