WO2016012163A1 - Composition de pain de savon et procédés de maintien de mousse améliorée en présence d'une eau à concentration élevée en électrolyte - Google Patents

Composition de pain de savon et procédés de maintien de mousse améliorée en présence d'une eau à concentration élevée en électrolyte Download PDF

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Publication number
WO2016012163A1
WO2016012163A1 PCT/EP2015/063617 EP2015063617W WO2016012163A1 WO 2016012163 A1 WO2016012163 A1 WO 2016012163A1 EP 2015063617 W EP2015063617 W EP 2015063617W WO 2016012163 A1 WO2016012163 A1 WO 2016012163A1
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WO
WIPO (PCT)
Prior art keywords
bar
water
fatty acid
lather
composition
Prior art date
Application number
PCT/EP2015/063617
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English (en)
Inventor
Rafael Astolfi
Emiliana Alves dos Reis GATI
Sergio Roberto Leopoldino
Luiz Felipe Costa VIDIGAL
Venugopal Vijayakrishnan
Original Assignee
Unilever Plc
Unilever N.V.
Conopco, Inc., D/B/A Unilever
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unilever Plc, Unilever N.V., Conopco, Inc., D/B/A Unilever filed Critical Unilever Plc
Priority to CN201580040352.2A priority Critical patent/CN106574216A/zh
Priority to MX2017000839A priority patent/MX2017000839A/es
Priority to BR112017001260-0A priority patent/BR112017001260B1/pt
Priority to ES15733652T priority patent/ES2833234T3/es
Priority to EP15733652.0A priority patent/EP3172309B1/fr
Priority to EA201790006A priority patent/EA035754B1/ru
Publication of WO2016012163A1 publication Critical patent/WO2016012163A1/fr
Priority to ZA2017/00174A priority patent/ZA201700174B/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/0005—Other compounding ingredients characterised by their effect
    • C11D3/0094—High foaming compositions
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D9/00—Compositions of detergents based essentially on soap
    • C11D9/007—Soaps or soap mixtures with well defined chain length
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D9/00—Compositions of detergents based essentially on soap
    • C11D9/02—Compositions of detergents based essentially on soap on alkali or ammonium soaps
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D9/00—Compositions of detergents based essentially on soap
    • C11D9/04—Compositions of detergents based essentially on soap containing compounding ingredients other than soaps
    • C11D9/22—Organic compounds, e.g. vitamins
    • C11D9/26—Organic compounds, e.g. vitamins containing oxygen

Definitions

  • Soap bars for cleansing are typically prepared by saponification (e.g., neutralization) of triglyceride/fatty acids.
  • various fats e.g., tallow, palms and coconut oil blends
  • alkali typically NaOH
  • alkaline salts of fatty acid derived from the fatty acid chains forming the glyceride
  • Glycerol may optionally be extracted with brine (e.g., water with high sodium concentration) to yield dilute fatty acid soap solution containing soap and aqueous phase (e.g., 70% soap and 30% aqueous phase).
  • the soap solution is then typically dried (e.g., to about 12% water) and the remaining mass is milled, plodded and stamped into bars.
  • the soap solution can be cast in to moulds, blisters etc.
  • the chain length of fatty acid soaps varies depending on starting fat or oil feedstock (for purposes of this specification, “oil” and “fat” are used interchangeably, except where context demands otherwise).
  • Longer chain fatty acid soaps e.g., Ci6 palmitic or Cie stearic
  • shorter chain soaps e.g., C12 lauric
  • the fatty acid soaps produced may also be saturated or unsaturated (e.g., oleic acid).
  • longer molecular weight fatty acid soaps e.g., C14 to C22 soaps
  • shorter molecular weight soaps e.g., Cs to C12
  • the longer chain soaps are desirable in that they maintain structure and do not dissolve as readily.
  • Unsaturated soaps e.g., oleic
  • Unsaturated soaps are soluble and lather quickly, like short-chained soaps, but form a denser, creamier foam, like the longer chained soaps.
  • the particular mixture of chain lengths is critical for establishing lather quality.
  • structuring required to produce and maintain a solid soap bar (i.e., structuring is provided by longer chain-length soaps) the production of a pure soap bar having enhanced lathering benefit (e.g., quick lather) is considered extremely difficult.
  • soap bar When synthetic surfactant (e.g., nonionic surfactant) is added to enhance mildness, typically the soap bar must still be predominantly made of long-chain soaps to ensure the bar is well structured and can maintain structure in stamping.
  • synthetic surfactant e.g., nonionic surfactant
  • WO 93/04161 discloses bars comprising mixtures of soap, CM - C20 alkyl polyethoxylate nonionic and C16 - C18 acyl isethionate (also a mild surfactant).
  • the soap used comprises at least tallow (longer chain, slower lather) and includes cationic polymeric skin mildness aids and, as moisturizers, free fatty acid.
  • references in the art have disclosed use of specially tailored soaps (which involved additional, expensive processing) and/or use of additional, expensive co-actives.
  • Kefauver et al. discloses a mild, lathering personal cleansing soap bar composition comprising from 30 to 85 by wt. tailored fatty acid soap comprising in turn from 50% to 85% of saturated fatty acid soap selected from the group consisting of: myristic, palmitic, and stearic acid soaps. Kefauver fails to disclose specific ratio levels of capric and lauric fatty acid soaps, together with maximum levels of myristic fatty acid, or maximum levels of unsaturated Cie acids other than monounsaturated oleic.
  • a mild toilet soap bar comprising blends of soap with one or more coactives, comprising at least 25% wt. on total actives of lauric acid soaps.
  • Chambers fails to disclose soap bar formulations having maximum amounts of myristic acid soap or of unsaturated Cie other than oleic combined with ratios of capric and lauric fatty acid soaps as claimed in our invention.
  • Figure 1 is series of photos showing how lather is defined on a visual scale using qualitative lather volume assessment protocol. The scale applies numerical values to the qualitative determination. Summary of the invention
  • compositions and methods for enhancing lather wherein, by rebalancing short chain fatty acids (e.g., ratio of Cio to C12, using no more than a maximum amount of C14, using specific amount and types of unsaturated Cis), copious lather can be produced even in water having high concentration of electrolyte (e.g., defined by water hardness value greater than about 25 grams of salt per liter of water, preferably greater than about 50, preferably greater than about 75; water hardness of seawater is about 635 grams salt per liter of water).
  • electrolyte e.g., defined by water hardness value greater than about 25 grams of salt per liter of water, preferably greater than about 50, preferably greater than about 75; water hardness of seawater is about 635 grams salt per liter of water.
  • the present invention relates to a soap bar composition which enhances lather when used with water having high concentration of electrolyte (e.g., having hardness of greater than about 25g salt per liter of water).
  • the bar compositions comprise: a) a fatty acid soap blend in an amount of 30 to 90% by wt. of the soap bar wherein:
  • the ratio of Cio to C12 fatty acid is about 0.5:1.0 to about 1.5:1 .0, preferably from about 0.75:1 to 1 .25:1 , more preferably about 1 :1 ;
  • CM fatty acid is present at 0 to about 3.5% maximum, preferably about 0.1 to about 3.0% by wt. bar composition;
  • iii. oleic acid is present at about 25% to about 35% of bar composition; iv. amount of unsaturated C18 fatty acid other than oleic is 0 to about 10% maximum, preferably 0 to about 5%;
  • composition polyol b) about 0.1 to about 15% by wt. of composition polyol
  • the invention relates to a method for enhancing lather when washing in water having high amount of dissolved salt, particularly divalent salts such as calcium and magnesium and monovalent salts such as sodium (i.e., high electrolyte containing water).
  • lather is enhanced in water having hardness of greater than about 25g salt/liter water, more preferably greater than about 50g salt/liter.
  • the method comprises lathering in water of noted hardness with bars having the composition noted above to achieve enhanced lather (e.g., improvement of greater than about 30% in lather) when compared to the lather formed using bars in which the ratio of Cio to C12, the maximum amounts of C14, and the maximum amounts of unsaturated C18 other than oleic are outside those claimed above. Specifically, the criteria noted must be used.
  • Soap bar composition The present invention relates to extruded or melt cast personal washing bars that comprise specific levels and ratios of various fatty acid soaps; optionally one or more added polyols, polymers, organic and inorganic adjuvant materials, electrolytes, benefit agents and other minor ingredients and the remainder of water. These components of the bar composition that are used to manufacture and evaluate the bars are described below.
  • the bar compositions of the invention are capable of being manufactured by processes that generally involve the extrusion forming of ingots or billets, and stamping or molding of these billets into individual tablets, cakes, or bars and alternatively the products can be obtained by the melt cast process.
  • the fatty acid soaps, other surfactants and in fact all the components of the bar should be suitable for routine contact with human skin and preferably yield bars that are high lathering.
  • the bars yield superior lather even when washing in water having high concentration of divalent and monovalent salts.
  • This lather is compared to lather generated by bars formed from same oil base but in which fatty acids have not been tailored as defined. Improvement in lather is greater than about 30%, preferably greater than about 40% compared to bar not meeting limitation (see comparative bar in Example). This is true in either quantitative test defined in protocol or in quantitative SITA® foam test machinery data obtained as also defined in protocol.
  • the soap bar composition providing improved lather comprises fatty acid blend soap in an amount of 30 to 85% by wt. of the soap bar. More preferably, the fatty acid blend comprises a fatty acid blend in an amount of 40 to 80% by wt. of the soap bar. Most preferably, the fatty acid blend comprises a fatty acid blend in an amount of 45 to 78% by wt. of the soap bar.
  • the fatty acid blend comprises one or more surfactants.
  • the preferred type of surfactant is fatty acid soap.
  • soap is used herein in its popular sense, i. e., the alkali metal or alkanol ammonium salts of aliphatic, alkanes, or alkene
  • the soaps useful herein are the well known alkali metal salts of natural or synthetic aliphatic (alkanoic or alkenoic) acids having about 8 to about 24 carbon atoms. They may be described as alkali metal carboxylates of saturated or unsaturated hydrocarbons having about 8 to about 24 carbon atoms. Alkali metal salts are preferred.
  • the fatty acid blend is made from fatty acids that may be different fatty acids, typically fatty acids containing fatty acid moieties with chain lengths of from Cs to C24.
  • the fatty acid blend may also contain relatively pure amounts of one or more fatty acids.
  • Suitable fatty acids include, but are not limited to, butyric, caproic, caprylic, capric, lauric, myristic, myristelaidic, pentadecanoic, palmitic, palmitoleic, margaric, heptadecenoic, stearic, oleic, linoleic, linolenic, arachidic, gadoleic, behenic and lignoceric acids and their isomers.
  • the fatty acid blend has fatty acids with fatty acids moiety chains length of 10 (capric acid) and 12 (lauric acid) carbon atoms used in specifically defined ratios. In preferred embodiments, the fatty acid blend has low levels of fatty acid with saturated fatty acid moiety chain length of 14 carbon atoms (myristic acid).
  • the fatty acid blend of the present invention comprises relatively high amounts (e.g. at least 3 %, preferably at least 10% by wt. bar composition) of capric and lauric acids wherein ratio of C10 to C12 is in a defined range. More particularly, Cs to C14 fatty acids should comprise about 10% to about 32% by wt. of composition (C14 alone comprises no more than about 3.5% by wt. of composition); C16 to Cis long saturated chain should comprise about 15% to 55% by wt. composition; and long unsaturated C18 (e.g., oleic) should comprise about 1 1 % to 42% by wt. of composition (unsaturated C18 other than oleic comprises 10% or less by wt.
  • Cs to C14 fatty acids should comprise about 10% to about 32% by wt. of composition (C14 alone comprises no more than about 3.5% by wt. of composition); C16 to Cis long saturated chain should comprise about 15% to 55% by wt. composition; and long uns
  • the fatty acid blend may have a proportion of capric acid to lauric acid ranging from 0.5 to 1 to 1 .5 to 1 . Preferably, ratio is 0.75 to 1 to 1.25 to 1.
  • the fatty acids may be eventually in the form of free fatty acids, preferably in an amount not higher than 5% of the fatty acid soap blend.
  • the total level of the adjuvant materials used in the bar composition should be in an amount not higher than 50% by wt. of the soap bar composition.
  • Suitable starchy materials which may be used include natural starch (from corn, wheat, rice, potato, tapioca and the like), pregelatinzed starch, various physically and chemically modified starch and mixtures thereof.
  • natural starch is meant starch which has not been subjected to chemical or physical modification - also known as raw or native starch.
  • a preferred starch is natural or native starch from maize (corn), cassava, wheat, potato, rice and other natural sources of it.
  • Raw starch with different ratio of amylose and amylopectin e.g. maize (25% amylose); waxy maize (0%); high amylose maize (70%); potato (23%); rice (16%); sago (27%); cassava (18%); wheat (30%) and others.
  • the raw starch can be used directly or modified during the process of making the bar composition such that the starch becomes gelatinized, either partially or fully gelatinized.
  • starch is pre-gelatinized which is starch that has been gelatinized before it is added as an ingredient in the present bar compositions.
  • Various forms are available that will gel at different temperatures, e.g., cold water dispersible starch.
  • One suitable commercial pre-gelatinized starch is supplied by National Starch Co. (Brazil) under the trade name FARMAL® CS 3400 but other commercially available materials having similar characteristics are suitable.
  • Another organic adjuvant could be a polyol or mixture of polyols.
  • Polyol is a term used herein to designate a compound having multiple hydroxyl groups (at least two, preferably at least three) which is highly water soluble, preferably freely soluble, in water.
  • polyols are available including: relatively low molecular weight short chain polyhydroxy compounds such as glycerol and propylene glycol; sugars such as sorbitol, manitol, sucrose and glucose; modified carbohydrates such as hydrolyzed starch, dextrin and maltodextrin, and polymeric synthetic polyols such as polyalkylene glycols, for example polyoxyethylene glycol (PEG) and polyoxypropylene glycol (PPG).
  • PEG polyoxyethylene glycol
  • PPG polyoxypropylene glycol
  • glycerol, sorbitol and their mixtures are especially preferred polyol.
  • the level of polyol is critical in forming a thermoplastic mass whose material properties are suitable for both high speed manufacture (300-400 bars per minute) and for use as a personal washing bar. It has been found that when the polyol level is too low, the mass is not sufficiently plastic at the extrusion temperature (e.g., 40o C to 45o C) and the bars tend to exhibit higher mushing and rates of wear. Conversely, when the polyol level is too high, the mass becomes too soft to be formed into bars by high speed at normal process temperature.
  • the bars of the invention comprise 0.1 to 20%, preferably 0.5 to 15% by wt. polyol.
  • Preferred polyols, as noted, include glycerol, sorbitol and mixtures thereof.
  • the adjuvant system may optionally include insoluble particles comprising one or a combination of materials.
  • insoluble particles materials that are present in solid particulate form and suitable for personal washing.
  • the insoluble particles should not be perceived as scratchy or granular and thus should have a particle size less than 300 microns, more preferably less than 100 microns and most preferably less than 50 microns.
  • Preferred inorganic particulate material includes talc and calcium carbonate.
  • Talc is a magnesium silicate mineral material, with a sheet silicate structure and a composition of Mg3Si4 (OH)22, and may be available in the hydrated form. It has a plate-like morphology, and is essentially oleophilic/hydrophobic, i.e., it is wetted by oil rather than water.
  • Calcium carbonate or chalk exists in three crystal forms: calcite, aragonite and vaterite.
  • the natural morphology of calcite is rhombohedral or cuboidal, acicular or dendritic for aragonite and spheroidal for vaterite.
  • calcium carbonate or chalk known as precipitated calcium carbonate is produced by a carbonation method in which carbon dioxide gas is bubbled through an aqueous suspension of calcium hydroxide.
  • the crystal type of calcium carbonate is calcite or a mixture of calcite and aragonite.
  • optional insoluble inorganic particulate materials include alumino silicates, aluminates, silicates, phosphates, insoluble sulfates, borates and clays (e.g., kaolin, china clay) and their combinations.
  • Organic particulate materials include: insoluble polysaccharides such as highly crosslinked or insolubilized starch (e.g., by reaction with a hydrophobe such as octyl succinate) and cellulose; synthetic polymers such as various polymer lattices and suspension polymers; insoluble soaps and mixtures thereof.
  • insoluble polysaccharides such as highly crosslinked or insolubilized starch (e.g., by reaction with a hydrophobe such as octyl succinate) and cellulose
  • synthetic polymers such as various polymer lattices and suspension polymers
  • insoluble soaps and mixtures thereof include: insoluble polysaccharides such as highly crosslinked or insolubilized starch (e.g., by reaction with a hydrophobe such as octyl succinate) and cellulose; synthetic polymers such as various polymer lattices and suspension polymers; insoluble soaps and mixtures thereof.
  • Bar compositions preferably comprise 0.1 to 25% by wt. of bar composition, preferably 5 to 15 by wt. of these mineral or organic particles.
  • Bars of the invention comprise 10 to 30% by wt, preferably 13 to 20% by wt. water.
  • the bar compositions can optionally include non-soap synthetic type surfactants (detergents) - so called syndets.
  • Syndets can include anionic surfactants, nonionic surfactants, amphoteric or zwitterionic surfactants and cationic surfactants.
  • the level of synthetic surfactant present in the bar is generally less than 25%, preferably less than 15%, preferably up to 10%, and most preferably from 0 to 7% based on the total weight of the bar composition.
  • the anionic surfactant may be, for example, an aliphatic sulfonate, such as a primary alkane (e.g., C8-C22) sulfonate, primary alkane (e.g., C8-C22) disulfonate, C8-C22 alkene sulfonate, C8-C22 hydroxyalkane sulfonate or alkyi glyceryl ether sulfonate (AGS); or an aromatic sulfonate such as alkyi benzene sulfonate.
  • Alpha olefin sulfonates are another suitable anionic surfactant.
  • the anionic may also be an alkyi sulfate (e.g., C12-C18 alkyi sulfate), especially a primary alcohol sulfate or an alkyi ether sulfate (including alkyi glyceryl ether sulfates).
  • alkyi sulfate e.g., C12-C18 alkyi sulfate
  • a primary alcohol sulfate e.g., a primary alcohol sulfate or an alkyi ether sulfate (including alkyi glyceryl ether sulfates).
  • the anionic surfactant can also be a sulfonated fatty acid such as alpha sulfonated tallow fatty acid, a sulfonated fatty acid ester such as alpha sulfonated methyl tallowate or mixtures thereof.
  • the anionic surfactant may also be alkyi sulfosuccinates (including mono- and dialkyl, e.g., C6-C22 sulfosuccinates); alkyi and acyl taurates, alkyi and acyl sarcosinates, sulfoacetates, C8-C22 alkyi phosphates and phosphates, alkyi phosphate esters and alkoxyl alkyi phosphate esters, acyl lactates or lactylates, C8-C22 monoalkyi succinates and maleates, sulphoacetates, and acyl isethionates.
  • Another class of anionics is Cs to C20 alkyi ethoxy (1-20 EO) carboxylates.
  • Cs-C-is acyl isethionates Another suitable anionic surfactant is Cs-C-is acyl isethionates. These esters are prepared by reaction between alkali metal isethionate with mixed aliphatic fatty acids having from 6 to 18 carbon atoms and an iodine value of less than 20. At least 75% of the mixed fatty acids have from 12 to 18 carbon atoms and up to 25% have from 6 to 10 carbon atoms.
  • the acyl isethionate may also be alkoxylated isethionates
  • Acyl isethionates when present, will generally range from about 0.5% to about 25% by weight of the total composition.
  • the anionic component will comprise the majority of the synthetic surfactants used in the bar composition.
  • Amphoteric detergents which may be used in this invention include at least one acid group. This may be a carboxylic or a sulphonic acid group. They include quaternary nitrogen and therefore are quaternary amido acids. They should generally include an alkyi or alkenyl group of 7 to 18 carbon atoms. Suitable amphoteric surfactants include amphoacetates, alkyi and alkyi amido betaines, and alkyi and alkyi amido sulphobetaines.
  • Amphoacetates and diamphoacetates are also intended to be covered in possible zwitterionic and/or amphoteric compounds which may be used.
  • Suitable nonionic surfactants include the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example aliphatic alcohols or fatty acids, with alkylene oxides, especially ethylene oxide either alone or with propylene oxide.
  • alkylene oxides especially ethylene oxide either alone or with propylene oxide.
  • Examples include the condensation products of aliphatic (Cs-Cis) primary or secondary linear or branched alcohols with ethylene oxide, and products made by condensation of ethylene oxide with the reaction products of propylene oxide and ethylenediamine.
  • Other so-called nonionic detergent compounds include long chain tertiary amine oxides, long chain tertiary phosphine oxides and dialkyl sulphoxides.
  • the nonionic may also be a sugar amide, such as alkyl polysaccharides and alkyl polysaccharide amides.
  • cationic detergents are the quaternary ammonium compounds such as alkyldimethylammonium halides.
  • Finishing adjuvant materials are ingredients that improve the aesthetic qualities of the bar especially the visual, tactile and olefactory properties either directly (perfume) or indirectly (preservatives).
  • a wide variety of optional ingredients can be incorporated in the bar composition of the invention.
  • adjuvants include but are not limited to: perfumes; opacifying agents such as fatty alcohols, ethoxylated fatty acids, solid esters, and T1O2; dyes and pigments; pearlizing agent such as T1O2 coated micas and other interference pigments; plate like mirror particles such as organic glitters; sensates such as menthol and ginger; preservatives such as dimethyloldimethylhydantoin (Glydant XL1000), parabens, sorbic acid and the like; anti-oxidants such as, for example, butylated hydroxytoluene (BHT); chelating agents such as salts of ethylene diamine tetra acetic acid (EDTA) and trisodium etridronate; emulsion stabilizers; auxiliary thickeners; buffering agents; and mixtures thereof.
  • the level of pearlizing agent should be between about 0.1 % to about 3%, preferably between 0.1 % and 0.5% and most preferably between about 0.2 to about
  • a particular class of optional ingredients highlighted here is skin benefit agents included to promote skin and hair health and condition.
  • Potential benefit agents include but are not limited to: lipids such as cholesterol, ceramides, and pseudoceramides; antimicrobial agents such as TRICLOSAN; sunscreens such as cinnamates; other types of exfoliant particles such as polyethylene beads, walnut shells, apricot seeds, flower petals and seeds, and inorganics such as silica, and pumice; additional emollients (skin softening agents) such as long chain alcohols and waxes like lanolin; additional moisturizers; skin-toning agents; skin nutrients such as vitamins like Vitamin C, D and E and essential oils like bergamot, citrus unshiu, calamus, and the like; water soluble or insoluble extracts of avocado, grape, grape seed, myrrh, cucumber, watercress, calendula, elder flower, geranium, linden blossom, amaranth, seaweed, gingko, gins
  • the composition can also include a variety of other active ingredients that provide additional skin (including scalp) benefits.
  • active ingredients include anti-acne agents such as salicylic and resorcinol; sulfur-containing D and L amino acids and their derivatives and salts, particularly their N-acetyl derivatives; anti-wrinkle, anti-skin atrophy and skin-repair actives such as vitamins (e.g., A,E and K), vitamin alkyl esters, minerals, magnesium, calcium, copper, zinc and other metallic components; retinoic acid and esters and derivatives such as retinal and retinol, vitamin B3 compounds, alpha hydroxy acids, beta hydroxy acids, e.g.
  • salicylic acid and derivatives thereof skin soothing agents such as aloe vera, jojoba oil, propionic and acetic acid derivatives, fenamic acid derivatives; artificial tanning agents such as dihydroxyacetone; tyrosine; tyrosine esters such as ethyl tyrosinate and glucose tyrosinate; skin lightening agents such as aloe extract and niacinamide, alpha-glyceryl-L-ascorbic acid, aminotyroxine, ammonium lactate, glycolic acid, hydroquinone, 4 hydroxyanisole, sebum stimulation agents such as bryonolic acid, dehydroepiandrosterone (DHEA) and orizano; sebum inhibitors such as aluminum hydroxy chloride, corticosteroids, dehydroacetic acid and its salts, dichlorophenyl imidazoldioxolan (available from Elubiol); anti-oxidant effects, protease inhibition; skin tightening
  • the soap bars include 0.5 wt% to 5 wt% electrolyte.
  • Preferred electrolytes include chlorides, sulphates and phosphates of alkali metals or alkaline earth metals. Without wishing to be bound by theory it is believed that electrolytes help to structure the solidified soap mass and also increase the viscosity of the molten mass by common ion effect. Comparative soap bars without any electrolyte were found to be softer.
  • Sodium chloride and sodium Sulphate are the most preferred electrolyte, more preferably at 0.6 to 3.6 wt%, and most preferably at 1.0 to 3.6 wt%.
  • the soap bars may include 0.1 to 5 wt % of a polymer selected from acrylates or cellulose ethers.
  • Preferred acrylates include cross-linked acrylates, polyacrylic acids or sodium polyacrylates.
  • Preferred cellulose ethers include carboxymethyl celluloses or hydroxyalkyl celluloses. A combination of these polymers may also be used, provided the total amount of polymers does not exceed 5 wt%.
  • Acrylates Preferred bars include 0.1 to 5% acrylates. More preferred bars include 0.15 to 3% acrylates.
  • acrylate polymers include polymers and copolymers of acrylic acid crosslinked with polyallylsucrose as described in US Patent 2,798,053 which is herein incorporated by reference. Other examples include polyacrylates, acrylate copolymers or alkali swellable emulsion acrylate copolymers (e.g., ACULYN ® 33 Ex. Rohm and Haas; CARBOPOL ® Aqua SF-1 Ex.
  • hydrophobically modified alkali swellable copolymers e.g., ACULYN ® 22, ACULYN ® 28 and ACULYN ® 38 ex. Rohm and Haas.
  • commercially available crosslinked homopolymers of acrylic acid include CARBOPOL ® 934, 940, 941 , 956, 980 and 996 carbomers available from Lubrizol Inc.
  • Other commercially available crosslinked acrylic acid copolymers include the CARBOPOL ® Ultrez grade series (Ultrez ® 10, 20 and 21 ) and the ETD series (ETD 2020 and 2050) available from Lubrizol Inc.
  • CARBOPOL ® Aqua SF-1 is a particularly preferred acrylate.
  • This compound is a slightly cross-linked, alkali-swellable acrylate copolymer which has three structural units; one or more carboxylic acid monomers having 3 to 10 carbon atoms, one or more vinyl monomers and, one or more mono- or polyunsaturated monomers.
  • Cellulose ethers are slightly cross-linked, alkali-swellable acrylate copolymer which has three structural units; one or more carboxylic acid monomers having 3 to 10 carbon atoms, one or more vinyl monomers and, one or more mono- or polyunsaturated monomers.
  • Preferred bars include 0.1 to 5% cellulose ethers. More preferred bars include 0.1 to 3% cellulose ethers. Preferred cellulose ethers are selected from alkyl celluloses, hydroxyalkyl celluloses and carboxyalkyl celluloses. More preferred bars include hydroxyalkyl celluloses or carboxyalkyl celluloses and particularly preferred bars include carboxyalkyl cellulose.
  • Preferred hydroxyalkyl cellulose includes hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose and ethyl hydroxyethyl cellulose.
  • Preferred carboxyalkyl cellulose includes carboxymethyl cellulose. It is particularly preferred that the carboxymethyl cellulose is in form of sodium salt of carboxymethyl cellulose.
  • wax includes paraffin wax and microcrystalline wax.
  • preferred bars may include 0.01 to 5 wt%
  • Polyalkyleneglycols more preferably 0.03 to 3 wt% and most preferably 0.5 to 1 wt%. Suitable examples include polyethyleneglycol and polypropyleneglycol. A preferred commercial product is POLYOX ® sold by The Dow Chemical Company.
  • a preferred composition of the invention comprises (by wt): 1) 30-85% soap, preferably sodium soap;
  • polyol preferably glycerine, sorbitol or mixture
  • a) ratio of Cio to C12 fatty acid is 0.5 to 1 .0 to 1 .5 to 1 .0;
  • CM is used at less than or equal to 3.5% by wt.
  • oleic acid is 26-34% by wt.
  • C18 other than oleic is 0 to 8% by wt.
  • bars are prepared using mixture of palm oil (PO), palm oil stearine (POS), and palm kernel oil (PKO) and ratio of (PO plus POS) to PKO is 75:25, preferably 60:40.
  • PO palm oil
  • POS palm oil stearine
  • PKO palm kernel oil
  • the invention comprises a method of enhancing lather when washing in high electrolyte containing water which comprises applying to skin or suitable substrate bar compositions as defined above and wherein enhanced lather is relative to bar produced from same types and ratios of oils (e.g., 60:40 (PO plus POS/PKO), but where specific fatty acid blends are not tailored to meet specific criteria defined by this invention.
  • the increase in foam of bars of the invention (tested in water of defined hardness) is greater than about 30%, preferably greater than about 40% as measured in mL by SITA® foam tester or in quantitative test also defined in protocol, compared to bars outside the invention (e.g., not tailored as defined by invention).
  • the invention relates to a method of enhancing lather when washing in water having water hardness greater than about 25 French hardness (FH), preferably greater than about 50 French Hardness, more preferably greater than about 75 FH, even more preferably greater than about 100 FH which method comprises applying to skin or other substrate bar compositions defined by
  • compositions of claim 1 wherein enhanced lather is relative to bar product from the same type and ratios of oils but where specific fatty acid blends do not fall with Cio:Ci2 ratios, minimal Cu amounts and minimal unsaturated Cie other than oleic amounts defined.
  • the amount of lather generated by a soap bar is an important parameter affecting consumer preference.
  • the lather volume test described herein gives a measure of lather generation under standard conditions, thus allowing objective comparison of different soap formulations. 2.
  • Lather is generated by trained technicians using a standardised method. The lather is collected and its volume measured. 3. Equipment
  • test tablets e.g., bars
  • the lather is generated by the soap remaining on the gloves.
  • Stage 1 Rub one hand over the other hand (two hands on same direction)
  • Stage 2 Grip the right hand with the left, or vice versa, and force the lather to the tips of the fingers.
  • This operation is repeated five times.
  • Solid moisturizing personal wash bars were prepared with different percentages of fatty acids in accordance with the formulations herein below.
  • the fatty acids used to prepare the formulations are supplied by Cosmoquimica under the commercial Name of Edenor® C8 98/100 (Caprilic acid); Edenor® C10 98/100 (Capric acid); Edenor® C12 98/100 (Laurie acid); Edenor® C14 98/100
  • Palm oil stearine 40 2 Palm oil stearine 40 2 —
  • Example 2 As indicated, seawater was used for results of Example 1. The example also shows high hardness level (greater than 50, greater than 100) of brackish water in various countries. Applicants also tested (in seawater using SITA® protocol) what was maximum lather for individual Cs, C10, C12, C14 chain lengths; for composition of Example 1 ; and composition of Comparative B, and results are set forth below. Table 2
  • salt water e.g., sodium ions
  • Ci 4 chain length is particularly affected.
  • diluted we mean there is higher amount of longer chain fatty acids which, as we see, would be expected to foam less.
  • the diluted compositions were tested in the laboratory and in a SITA tester and results are set forth below:
  • the "designed" bars show superior performance, even when diluted to great extent (80/20). By using greater amount of shorter chain then conventional bars, unexpectedly superior foam is retained.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Detergent Compositions (AREA)
  • Cosmetics (AREA)
  • Lubricants (AREA)

Abstract

La présente invention concerne des compositions de pain de savon comprenant des rapports spécifiques de C10 sur C12, des valeurs maximales de C14 et des valeurs maximales d'acides C18 insaturés autres que l'acide oléique, qui conservent un moussant élevé par rapport à des pains similaires (fabriqués à partir d'huiles identiques dans les mêmes rapports), les critères notés n'étant pas satisfaits. La présente invention porte en outre sur un procédé d'amélioration de la mousse, utilisant ledit pain, dans de l'eau présentant une dureté supérieure à environ 25.
PCT/EP2015/063617 2014-07-22 2015-06-17 Composition de pain de savon et procédés de maintien de mousse améliorée en présence d'une eau à concentration élevée en électrolyte WO2016012163A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CN201580040352.2A CN106574216A (zh) 2014-07-22 2015-06-17 用于在具有高电解质浓度的水的存在下维持增加的泡沫的皂块组合物和方法
MX2017000839A MX2017000839A (es) 2014-07-22 2015-06-17 Composicion de barra y metodos para mantener espuma mejorada en presencia de agua con alta concentracion de electrolitos.
BR112017001260-0A BR112017001260B1 (pt) 2014-07-22 2015-06-17 Uso de uma composição de barras
ES15733652T ES2833234T3 (es) 2014-07-22 2015-06-17 Uso de una composición de pastilla de jabón específica para una espuma mejorada en presencia de agua con alta concentración de electrolitos
EP15733652.0A EP3172309B1 (fr) 2014-07-22 2015-06-17 Utilisation d'un pain de savon de composition spécifique pour une mousse accrue en présence d'eau à forte concentration d'électrolyte
EA201790006A EA035754B1 (ru) 2014-07-22 2015-06-17 Композиция кускового мыла и способы сохранения улучшенного пенообразования в воде с высокой концентрацией электролитов
ZA2017/00174A ZA201700174B (en) 2014-07-22 2017-01-09 Bar composition and methods for maintaining enhanced lather in presence of water with high electrolyte concentration

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14178075.9 2014-07-22
EP14178075 2014-07-22

Publications (1)

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WO2016012163A1 true WO2016012163A1 (fr) 2016-01-28

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CN (1) CN106574216A (fr)
BR (1) BR112017001260B1 (fr)
EA (1) EA035754B1 (fr)
ES (1) ES2833234T3 (fr)
MX (1) MX2017000839A (fr)
WO (1) WO2016012163A1 (fr)
ZA (1) ZA201700174B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022522759A (ja) * 2019-03-01 2022-04-20 ユニリーバー・アイピー・ホールディングス・ベスローテン・ヴェンノーツハップ カプレートに対する不飽和ｃ１８石鹸の比を最小限に抑えながらｃ１０石鹸を含むバー組成物
US11414632B2 (en) 2019-03-01 2022-08-16 Conopco, Inc. Soap bar with improved perfume impact and deposition of actives

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013076047A1 (fr) * 2011-11-23 2013-05-30 Unilever Plc Savon de toilette avec mousse améliorée

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5540852A (en) * 1995-01-31 1996-07-30 The Procter & Gamble Company Personal cleansing bar with tailored fatty acid soap

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013076047A1 (fr) * 2011-11-23 2013-05-30 Unilever Plc Savon de toilette avec mousse améliorée

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022522759A (ja) * 2019-03-01 2022-04-20 ユニリーバー・アイピー・ホールディングス・ベスローテン・ヴェンノーツハップ カプレートに対する不飽和ｃ１８石鹸の比を最小限に抑えながらｃ１０石鹸を含むバー組成物
US11414632B2 (en) 2019-03-01 2022-08-16 Conopco, Inc. Soap bar with improved perfume impact and deposition of actives
JP7439118B2 (ja) 2019-03-01 2024-02-27 ユニリーバー・アイピー・ホールディングス・ベスローテン・ヴェンノーツハップ カプレートに対する不飽和ｃ１８石鹸の比を最小限に抑えながらｃ１０石鹸を含むバー組成物
US12006494B2 (en) 2019-03-01 2024-06-11 Conopco, Inc. Bar compositions comprising C10 soap while minimizing ratio of unsaturated C18 soap to caprate

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EP3172309A1 (fr) 2017-05-31
EP3172309B1 (fr) 2020-10-07
BR112017001260A2 (pt) 2018-01-30
BR112017001260B1 (pt) 2022-06-14
EA035754B1 (ru) 2020-08-05
CN106574216A (zh) 2017-04-19
EA201790006A1 (ru) 2017-08-31
MX2017000839A (es) 2017-05-04
ES2833234T3 (es) 2021-06-14
ZA201700174B (en) 2018-08-29

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