MXPA99003199A - Mild cleansing bar compositions - Google Patents

Abstract

A transparent cleansing bar composition comprising from about 10 to 45 weight%of a synthetic detergent with a major portion of the detergent being a sulfated ethoxylated long chain alkyl alcohol of the formula R-(OCH2CH2)n-0-SO3X wherein R is an alkyl group having from 12-16 carbon atoms, N is 2 or 3, and X is an alkali metal or alkaline earth metal;and from about 10 to 30 weight%of a polyhydric alcohol of the formula H(OCH2CH2)n OH wherein n has an average value of 6 to 16;from about 15 to about 30 weight%of a water soluble soap, and wherein the ratio of the soap to the synthetic detergent ranges from about 1:1 to about 1:2;from about 5 to about 20 weight%of a fatty acid alkanolamide;from 0 to about 15 weight%of an alkyl sarcosinic acid of formula (I), where R is alkyl having 10 to 16 carbon atoms;and from 0 to about 10 weight%of a nonionic alkyl polyglycoside of formula (II), X is greater than 1 and less than 2 with the composition having a pH of not less than about 7.5.

Description

COMPOSITIONS FOR SOFT CLEANING BAR FIELD OF THE INVENTION This invention relates to cleaning compositions for human use and more particularly to a cleaning composition in solid or stick form that is highly transparent, exceptionally soft and will accept and is compatible with a variety of skin benefit additions. , such as sunscreens, proteins, emollients and the like without adversely affecting the clarity of the composition.

BACKGROUND OF THE INVENTION Translucent or substantially transparent soap bars have been available for consumer use for a number of years. These bars of soap are usually based on glycerin or alcohol-based to obtain the desired clarity and contain high levels of sodium and / or potassium stearate, normally 65 percent or more, and when dissolved in water exhibits alkaline pH's of 8.5 or more and usually at least 9.5. It has been said that these soaps are substantially less irritating than conventional non-translucent or non-transparent soap bars containing 65 to 95 percent sodium stearate and exhibit alkaline pH's ranging from 9.5 to 10.0. However, it has been found that even glycerin-based soap bars of pH's in the area of 9.5 or more are irritating to the skin and undesirable for use by those with particularly sensitive skin. It has also been found that glycerin-based soap bars exhibit relatively high hygroscopic tendencies, that is, they absorb water on the surface, due to which the surface of the bar becomes lumpy and flaky. With respect to alcohol-based soap bars, alcohol has been found to evaporate from the bar for relatively short periods of time, thereby causing a reduction in the size and clarity of the bar. The loss of alcohol can also cause the bar of soap to become rubbery. In the formulation of a transparent soap, a classic method includes the saponification at low temperature of fats and oils pre-dissolved in warm alcohol, water and glycerin, followed by the evaporation of part of the alcohol / water azeotrope. Another common technique is based on the addition of a polyhydric alcohol, such as glycerol, glycol, sugar or the like to a "concentrated soap" or semi-boiled soap, or to soap prepared by the cold process technique. Another method also consists of dissolving soap in alcohol to solubilize certain components and then distilling most of the alcohol.

The patent of E.U. No. 3,562,167 to Kamen discloses a transparent soap formed from a combination of soap, polyhydric alcohol and, as a surfactant, a polyalkoxy ether of an alkylphenol. The patent of E.U. No. 3,903,008 to Deweever et al. Describes the formulation of a clear soap by the combination of soap, polyhydric alcohols and a quaternized dihydroimidazole detergent. The US patents Nos. 3,793,214 and 3,926,828 to O'Neil et al. Describe transparent soaps produced using branched chain fatty acids. The patent of E.U. No. 3,864,272 to Toma et al., Describes the use of a fairly elaborate mechanical method for working the soap, that is, drying by aspersion followed by mechanical work to give transparency. A method for formulating a transparent soap is described in the U.S. patent. No. 2,820,768 wherein a sodium soap made from tallow, coconut oil and castor oil is mixed with a triethanolamine soap of stearic acid, an oleic acid and an excess of the amine. The patent of E.U. No. 4,290,904 discloses a low alkalinity transparent bar soap based on a tetrakis (hydroxyalkyl) ethylenediamine. The patent of E.U. No. 4,165,293 to Gordon describes a solid transparent soap that uses a high content of sodium soap (approximately 55%) with a dihydric alcohol together with the anionic or amphoteric surfactant.

The patent of E.U. No. 4,719,030 to Williams et al., Discloses a bar of clear soap that uses a water-insoluble synthetic amorphous silica or silicate having a specific surface area. The patent of E.U. No. 4,851,147 to Esposito et al. Discloses a clear soap using certain alkyl aryl polyoxyalkylenecarboxylic acids, a synthetic detergent, benzoic acid esters of primary alcohols and fatty acid soap. A disadvantage of many of the transparent soap bars of the prior art is that they form the typical cream in hard water. In order to overcome this problem with soaps in general, not only in transparent soaps, synthetic detergents were developed. However, it has been found that when these synthetic detergents are added to the typical clear soap to form what is known as a "bar-combo" (ie, a combination of synthetic detergent and soap), transparency is a problem. As far as is known, no one has done so far a transparent bar using a synthetic detergent and a soap, which has improved transparency, clarity and smoothness as described and claimed herein.

BRIEF DESCRIPTION OF THE INVENTION Accordingly, the present invention provides a composition for cleaning rod and the process for its manufacture, the bar remains transparent, that is, it has exceptionally high clarity, exceptional smoothness and does not employ monohydric alcohol, sugar or amines as it could be the case in many compositions for transparent bar. The bar has excellent color stability and can accept a number of beneficial additives for the skin without adversely affecting its clarity. In a preferred embodiment, the cleaning bar composition comprises the following major components: 1. from about 10 to 45% by weight of a synthetic detergent, the main component of the synthetic detergent is: a. from 15% to 35% a salt of an ethoxylated and sulphated long chain alkyl alcohol which is generally formulated to the formula: R- (OCH 2 CH 2) n-0-S0 3X wherein R = an alkyl group having from 12 to 16 atoms carbon, where n = 2 or 3; and x is an alkali metal or alkaline earth metal such as sodium, potassium, lithium, magnesium, barium and ammonium (NH4 +). b. additionally about 0 to 10% by weight of a nonionic alkyl polyglucoside having the general formula: where x is greater than 1 and less than 2; c. and from about 0 to 15% by weight of a Alkylsarcosinic acid having the formula: O O II II R - C - N - CHC - OH I CH3 wherein R is alkyl having from 10 to 16 carbon atoms, preferably cocoyl. 2. from 10 to 30% by weight of a polyhydric alcohol such as propylene glycol, glycerol, sorbitol and a polyethylene glycol having the formula: H (0CH2CH2) n0H wherein n has an average value of 6 to 16, preferably 123. 15 to 30% by weight of a water soluble soap that is preferably formed in situ by the reaction of long chain fatty acids with an alkali such as sodium hydroxide. The ratio of water soluble soap to synthetic detergent should vary from 1: 1 to 1: 2. 4. from 5 to 20% of a foam / cream stabilizer, preferably the fatty acid diethanolamides such as capric acid and the fatty acids derived from coconut oil. 5. the rest being perfume, dyes, beneficial additives for the skin and water. With respect to the synthetic detergent components of this composition, the main detergent is a salt of an ethoxylated and sulfated fatty alcohol having the formula: R- (0CH2CH2) n-0-S03 X and a preferred material is where R is lauroyl, n is 3 and x is sodium, the compound being sodium laurethulfate (CTFA). Although it has been discovered that sodium laureth sulfate is more irritating to the skin than, for example, the sodium cocoyl isethionate found in many of the so-called "mild" cleaning compositions., when used in conjunction with the other components of the present composition and in the specified ratios, it is found that the composition of this invention is at least equal to the benchmark of toilet soaps in softness to the skin and softer than the commercial and existing transparent cleaning bar products. It is also important to note that a bar composition of this invention that is preferred has a pH of about 9.6, while the pH of the leading "soft" cleaning bar varies from about 6.5 - 7.0. Since there is usually some correlation between pH and skin irritation, as the product having the lowest pH is softer, it is surprising to find that the present product, even with a relatively high pH, is equal in softness to the product of lower pH. In fact, it is better that the pH of the present composition is not less than 7.5 and preferably not less than 8.0, since pH's below these levels can cause a loss in the hardness and clarity of the composition. As shown, the synthetic detergent component can also include a relatively minor amount of an alkyl polyglucoside. Since the bar composition is processed by a hot melt technique, as will be explained later, the presence of the glycoside serves to reduce the temperature of the final mixture to about -12 ° C which helps in packaging and perfumed of the product. A preferred glycoside is available from Henkel Corporation as Plantaren 2000, and a preferred level is from about 1 to about 3% by weight of the composition. It is also preferable to include from about 5 to 10% by weight of an alkyl sarcosic acid, with a preferred material being N-cocoyl sarcosine or cocoyl sarcosic acid. It has been found that the addition of this material accelerates the formation of foam and also has a detergent function. The second main component of the composition is a water soluble soap such as sodium stearate, which is preferably formed in situ by the reaction of long chain fatty acids with an alkali such as sodium hydroxide. The particular fatty acids used are not critical and can be varied depending on the hardness of the desired rod. Stearic acid is preferred because its use results in a harder stick, and it is also preferred to use, together with stearic acid, a smaller amount of capric acid which serves to promote the production of foam. Although it is preferred to form the water soluble soap in situ, a preformed soap such as sodium stearate can be added to the mixture. However, it has been found that soap formation in situ results in a beneficial decrease in processing temperature of about -12 ° C and a fairly substantial reduction in processing time. It is important that the ratio of synthetic detergent to water soluble soap varies from about 1: 1 to 1: 2, with a ratio of about 4: 5 being preferred. To obtain an acceptable bar hardness, the amount of soap present in the composition should be at least about 17% by weight, and preferably about 18% by weight or more.Another main component of the clear cleaning bar is a polyhydric alcohol to promote the clarity of the product. Alcohols such as propylene glycol, glycerol, sorbitol and a polyethylene glycol such as PEG-12 (CTFA) can be used, it being preferred that a substantial amount of the alcohol used is propylene glycol since it was found to promote clarity of the stick to a greater degree than others of the useful alcohols. It is important that the amount of polyhydric alcohol present in the composition is at least as great as the amount of soap present, and preferably a little in excess of the amount of soap, ie, at least about 1.25 parts of glycol per 1 part. of soap. The composition also includes from about 5 to 20% by weight of a foaming agent and preferably fatty acid alkanolamides are used. Examples of suitable fatty acid alkanolamides include myristic diethanolamide, lauryl-miristal diethanolamide, capric diethanolamide, coconut diethanolamide and lauric diethanolamide. Preferred is capric diethanolamide or coconut diethanolamide. Preferably about 10 to 15% by weight of the composition is a fatty alkanolamide. Another important advantage of the composition of this invention is its ability to solubilize a number of complementary skin beneficial ingredients without adversely affecting the clarity and performance of the cleaning rod. Said complementary ingredients include proteins of both animal and vegetable origin, phospholipids, sunscreen agents, mucopolysaccharides, polyvinylpyrrolidone derivatives, vitamin derivatives and certain cationic guar gums. A guar gum which is preferred is available from Rhone-Poulenc, Inc. and is designated Jaguar C-162. Table III identifies a number of such complementary skin beneficial ingredients, the level at which each was incorporated into a cleaning rod composition and its purpose. The basic procedure for making the cleaning composition according to the invention uses a "hot melt" process which includes mixing and heating the different ingredients and thus does not require spraying, pressure extrusion or drying equipment. The process comprises initially mixing, at room temperature and with low agitation, all liquid ingredients including water, polyhydric alcohols, fatty acid diethanolamides and alkyl sarcosinic acid. While the mixing proceeds, the temperature is slowly lowered to approximately 48.8 ° C, at which point the synthetic detergent sodium laureth sulfate is added. When the addition is complete, the temperature is increased to approximately 71.1 ° C. At this point the sodium stearate, if used, or the fatty acids is added, and the temperature of the mixture is increased to about 76.6 ° C and the alkali (sodium hydroxide solution) is added. The stirring speed of the reaction mixture must be increased to facilitate the formation and dissolution of the sodium soaps thus formed. The temperature is allowed to rise to about 93.3 ° C, at which point any dye can be added. This temperature of 93.3 ° C is maintained until all the soap has gone into solution. The heating is then stopped, and when the temperature drops below about 87.7 ° C, any perfumes or liquids sensitive to caustic are added. The reaction mixture is allowed to cool to about 79.4-85 ° C and the mixture is ready to be poured into molds. The molten composition can be poured into a preformed package having a cavity of desired shape, followed by cooling the composition to form a solid stick in the package. An advantage of such a method is that the preformed packaging serves as both the mold and packing for the product, eliminating the need for wrapping equipment and special dies. Another method includes introducing the liquid mixture into racks, which is well known in the art. Commonly, after the solidification has taken place, the solid composition can be cut to a desired size using cutting apparatus known in the soap making art, such as heated wire cutters. The bars produced in this way are then wrapped and encased for boarding. An alternative method that is preferred to form the cleaning composition of the invention and create bars, comprises the steps of dispensing the molten composition using liquid filling apparatus in a mold having a cavity with the desired shape, cooling the composition until solidify in the mold, removing the solidified composition from the mold and stamping the molded composition creating a bar. The last step, stamping the molded composition on a bar, is not an essential step, since the molded composition can be packaged for direct sale from the mold without additional stamping, although stamping is preferred to give the bar a finished shape and polishing desired, and to print a trademark, logo or other desired design on the bar. A modification of the procedure described by Frosh and Kligman in "The Soap Chamber Test", Journal of the American Academy of Dermatology 1: 35-41, 1979 was employed to evaluate the softness of the compositions of this invention. In this procedure, approximately 20 panelists are selected at random from men and women, who are 18 years of age or older and who have not participated in any other skin irritation test of this nature for six weeks and have not experienced hypersensitivity. to a test material in the last six months. The panelists are examined to verify that they do not have any type of skin disorder such as eczema, psoriasis and the like. No panelists are selected who are taking any medication on a regular basis, such as anti-inflammatory agents, steroids, cortisones, aspirin, antihistamines, skin creams / ointments, etc. Prior to their acceptance in the study, each panelist was interviewed to obtain pertinent medical and usual information. An aluminum cup with a diameter of 19 mm called camera. Two layers of a non-woven cotton cloth (Webril discs available from Curity) are tightly packed into the chamber that receives the different test solutions. The test materials are 8% solutions of the compositions that will be tested and prepared daily. If required, the cameras can be secured to the skin with a non-occlusive tape. The Webril discs are moistened with approximately 0.1 ml of test materials and are applied to the forearm of the panelists according to a randomization program for each subject. A maximum of six cameras is applied to each arm of each panelist. The five-day test is scheduled to start on Monday and end on Friday. The initial patch remains applied for a period of 24 hours; the patches applied on Tuesday will remain applied for 5 hours and the patches applied from Wednesday to Friday will remain applied for a period of 6 hours. The subjects are instructed to keep the patches dry. The patches are removed and the test sites are rinsed with tap water half an hour before the evaluation.

The evaluation takes place on Tuesday morning and in the afternoon from Tuesday to Friday according to the following scales: Reduction 0 = No reaction 1 = Spotty, skin discoloration not flushed (follicular and diffuse) 2 = Mild redness 3 = Mild redness and 4 = Strong uniform redness (and covering the whole area) Edema 0 = No reaction 1 = Mild edema 2 = Moderate edema 3 = Severe edema Vesicles 0 = No reaction 1 = Few vesicles 2 = Many vesicles 3 = Numerous vesicles The subjects are asked daily if they have experienced any discomfort that happened during the day or night. If the level of irritation with a test product in a panelist reaches a degree of more than 2.0 using the vesicle scale or a total score of 7 at any time during the test, no product is applied for the remainder of the test in that test. site. Tables I and II establish a variety of formulas for cleaning bars that were made according to the procedure previously described.

TABLE I BAR + - - + INGREDIENT (Opti¡W169¡W170¡ W98 W94 W108 ¡mo)! ! ! ! TO ! B! C! D! E! F Sodium stearate 20.0! ! 18. Stearic acid 17.3¡ 16.5¡ 18.5¡ capric acid 2.0 Sodium hydroxide (50%) 5.84¡ 5.5 - + - sodium laureth-3¡ 25.0 26.0 26.0¡ 26.0 27 30.0 0¡ (70%)! ! ! ! ! Acid cocoilsarcosínico 1.5 2.0 2.0 '_ + Propylene Glycol 12.0 12.0 12.0 10.4 11. 0¡ 12.0 - + 6.1 PEG-12 8.0 8.0! Glycerin 4.6 ¡6.0 0 ¡4.3 4.8 4.5 - + • + - Sorbitol (70%) ¡¡¡! ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ 9.0 10.0 - + - + DEA of capramide 3. 0 ¡- + - - + PEG-60-Gliceride of 3. 0! Almond chloride bencenamido- 3. propyl PG-dimonium (30%) - - - + Alkylpolyglucoside 2. 0 Plantaren 2000 (50%) - - - + Polyquaternium-7 (8%) 0. 5 I - - + + - - + Water 3. 0 8.0 0 ¡4.3 ¡4.5 ¡8.0 - - + - + - - + DEA of cocoamide] 9.1 i 9.0 10.0 Cocoyl Cocoamidopropylbetaine 8.7 5.0 + (35%) 2.6 Isostearamidopropilmor- 2.0 Folino lactate (25%) - + PEG-6 Hot 7 9.0 - + cocamide DEA / DEA 7 laureth II Acid citric 1.0 ¡+ + - + - +. Coloring, Perfume 1.26¡ 1. 0 ¡0.9 + TABLE II BAR - + INGREDIENT (Opti W153 W87 W104 W201 W204 mo) G H I J K Sodium stearate 20.0 19.4 20.0 20.0 Stearic acid 16.5 16.6 Capric acid 2.0 2.0 Sodium hydroxide (50% 5.8 5.8 Sodium Laureth Sulfate-3 32.0 29.1 30.0 30.0 19.5 26.0 (70%) Cocoilsarcosinic Acid 2.0 2.0 - + Propylene Glycol 15.0 11.7 12. or 12.0 12.0 12.0 - + PEG-12 1 1 8.0 8.0 - + Glycerin 5.0 4.8 5. o 5.0 6.0 6.0 - + Sorbitol (70%) 6.0 6.0 - + - + DEA of cocoamide 9.0 8.0 8.0 AED Capramida 5.0 4.0 4.0 PEG-60-Almond glyceride Benzenide-propyl-PG-diammonium chloride (30%) Alkylpolyglycoside 9.0 2.0 Plantaren 2000 (50%) Polyquaternium-7 (8%) + - + ! Water 5.0 5.0 9.7 5.0 5.0 8.0 0.7 + d? ee c co? ccouactmiiii-Ldaa ¡8.0 '! Cocoilsarcosinato 'l' i I 'l I' i I '' +! Cocoamidopropilbetaine 10.0 ¡10.0 I I i (35-6) l l l -I- + + + + + + ! Isostearamidopropilmor- 3.0 ¡¡3.0 ¡¡¡folino lactato (25%)! ! ! ! PEG- 6 ¡10. 0! 10 0 ¡5. 0 ¡¡ + + + + + + + Citric acid ! | 0.4 ¡3.0 ¡¡ + + + + + + + ! Coloring, Perfume! ! + Observations related to the bars in tables II and II 1. Bars A, C, K, and L were made using the in situ neutralization of the fatty acids. This slightly lowered the processing temperatures and resulted in a decrease in the total time to process the bars. 2. Bar E was slightly firmer than bar D due to the increase in the amount of soap (sodium stearate). 3. Bar F had the highest level of soap at 24% and was not satisfactory, since the amount of glycol present (16.5%) was not enough to solubilize the soap (sodium stearate). These findings indicate that the amount of glycol present should slightly exceed the amount of soap; most preferably at least about 1.25 parts of glycol per part of soap. 4. The effect of pH was determined by comparing bars I and J. Bar I had a relatively high pH of 9.0 and was a very satisfactory bar in all aspects. The J bar had a pH of about 7.5 and was not satisfactory, since it was opaque and did not harden adequately at room temperature. 5. The effect of the alkyl polyglucoside on the K and L bars was demonstrated. The pour point of the formulation used to make the K-bar containing 4.5% of the polyglucoside was reduced by about -12-9.4 ° C. The pour point of the L-bar containing 1% of the polyglucoside was not significantly changed.

Incorporation of beneficial agents for the skin Five (5) different skin benefit agents were incorporated in the cleaning compositions of this invention at suitable levels. Said compositions, including the agents used, are identified below. The bars were evaluated to verify their transparency and it was determined that these ingredients did not have an adverse effect on this quality.

TABLE III + - W186 W193 W200 1 W205 W222 + + - + - + - - + - + + - + - + - - + - Stearic acid 16.5 16.5 16.5 16.5 16.5 + + Capric acid * »2.0 2.0! 2.0 2.0 2.0 + Sodium Hydroxide (50%) 2.9 2.9 2.9 2.9 2.9 2.9 + - + - + • Sodium Laureth Sulfate-3¡ 18.2 18.2 17.5 ¡17.5 (70%) ¡+ - + - + - Cocoilsarcosinic acid 2.0 2.0 2.0 2.0 1 2.0 + + - + - + - Propylene glycol 12.0 12.0 12.0 11.5 12.0 + - PEG-12 8.0 8.0 7.6 8.0 - + - +. Glycerin 6.0 6.0 6.0 6.0 5.8! 6.0 - + Sorbitol (70% 4.2 4.2 ¡4.2! 4.1 ¡4.2 - + DEA of cocoamide 8.0 8.0 ¡8.0! 8.0 ¡8.0 + + DEA de capramida 4.0 4.0 ¡4.0 ¡4.0 ¡4.0 - + + • Agua 13.4 14.9! 13.4 13.9 - + + • Caprylic / capric triglyceride 2.0 Vitamin E Linoleate 0.5 Dimethicone 2.0 copolyol Octylmethoxycinnamate 5.0! Animal protein 1 2.0 hydrolyzed Perfume 0.8 0.8 0.8 '0.8! 1.0 Hydrolyzed animal protein - Henkel Natrelan Octyl methoxycinnamate - Parsol MCX Dimethicone copolyol - Dow Corning 193 surfactant Vitamin E Linoleate - Roche Caprylic / capric triglyceride - Henkel Myritol 318 Determinations of softness The following tables IV-VII establish the formulas for stick compositions of this invention and a determination of softness for each according to the "The Soap Chamber Test" of Frosh and Kligman as previously described. The formula for each bar evaluated and its "Softness Score" is provided. The softness score is an average of the redness score, edema score and vesicle score. The smaller the number, the smoother the bar.

TABLE rv BAR + + ! INGREDIENT Wll W18 W22 W24 W55 W70 ! Sodium stearate 24.0! 24.0 24.0 | 24.0 20.0 21.7 Stearic acid! ! ! ! ! ! Capric acid! Sodium hydroxide (50%) ¡¡¡¡- + - - + Sodium Laureth Sulfate-3 ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡20.3 ¡22.1 (70%) Acid cocoilsarcosínico Propilenglicol 6.0 6.0 6.0 6.0 20.0 21.7 PEG-12 6.0 + - Glycerin 14.0 14.0 10.0 10.0 5.0 5.4 Sorbitol (70%) 19.0 Capramide DEA PEG-60-Almond glyceride Benzenamido-propyl-PG-diammonium chloride (30% Alkylpolyglycoside Plantaren 2000 (50%) Polyquaternium-7 (8%) Water 15.6 15.0 18.6 17.6 20.5 17.3 - + - - + - + - Lauroyl sarcosinate 5.4 6.0 6.0 7.0 sodium - + * Isostearamidopropylmor- 1.0 1.0 1.0 1.0 0.75 0.8 folino lactate (25%) * PPG-25 Chloride 5.0 4.0 diethylammonium * PEG-6 10.0 6.0 6.0 + + - + Sodium cocoyl isethionate 5.0 5.0 5.0 + - + - + * Alcoholbenzoate 1.0 C12-15 + - - + - - + - Ricinoleamido MEA sul- 0.4 0.4 disodium phosuccinate + - - + - - + - - + - ¡¡¡* Cocoamidopropilobetaine ¡¡¡¡¡¡¡¡¡3.5! * Cetearet - 30 ¡¡¡¡5.0 ¡5.0 ! Softness score 0.99¡ 0.99¡ 1.03 ¡1.18 ¡2.5 ¡2.4 + * Skin feeling additive TABLE V BAR + - INGREDIENT W105 W102 W124 W114 W190 172 Sodium stearate 20.0 20.0 20.0 20.0 Stearic acid 16.5 Capric acid 2.0 + - Sodium hydroxide (50%) 2.9 2.8 Sodium Laureth Sulfate-3 19.6 21.0 18.2 19.6 13.7 18.2 (70%) + - Cocoylesarcosinic acid 2.0 2.0 Propylene glycol 12.0 10.0 12.0 12.0 12.0 12.0 • + - PEG-12 7.0 7.0 8.0 8.0 Glycerin 7.2 5.0 5.5 5.5 6.0 6.0 Sorbitol 4.2 4.2 DEA of cocoamide 9.0 8.0 8.0 8.0 8.0 DEA of capramida 4.0 4.0 + + + PEG-60-Gliceride of ¡¡¡¡5.0 ¡¡almendra ¡¡¡! ¡¡ ! Bencenamide Chloride! ! ! ! propil-PG-diamonio ¡¡¡¡¡¡ Alquilpoliglucósido ¡¡! 4.6 Plantaren 2000 (50%)! ! ! ! ! ! ! Polyquaternium-7! ! ! ! ! ! ! Water 17.0¡ 17.0¡18.8¡ 14.5¡15.1¡15.3 ! DEA of cocoamide 15.0¡ 8.0 ¡8.0 ¡8.0 ¡¡ Cocoilsarcosinato - + PEG-6 7.2 ¡9.0 ¡¡ ! Citric acid 1.0 ¡0.4 ¡0.4 ¡¡ Isostearamidopropilmor- 2.0! Folino Lactate ¡+ + + + + + + - Lauramidopro Chloride - 2.1! Pil PG diamonio Coloring, Perfume, etc.! ¡¡1.0 ¡1.0 Score of softness ¡2.40 ¡2.05¡ 2.00¡ 1.80¡ 1.42¡1.21 + 1 TABLE VI BAR INGREDIENT W178 W199 W203 W217 W220 W218 + + + + + + + ! Sodium stearate! ! ! ! ! ! Stearic acid 16.5¡ 16.5¡ 16.5! 16.5¡ 16.5J16.5 ! Acrylic acid 2.0 2.0 2.0 2.0 2.0 2.0 2.0 ! Sodium hydroxide 2.9 2.9 2.9 2.9 2.9 2.9 2.9 ! Sodium Laureth Sulfate-3 16.1 ¡18.2¡ 18.2! 15.4! 17.5¡17.5 Acid cocoilsarcosínico 2.0 ¡2.0 ¡2.0 ¡4.7! 1.7 2.0 + + + + + + + I Propylene glycol ¡12.0¡ 10.7 ¡11.1 ¡12.0 ¡12.0 ¡12.0 ! PEG-12 8.0 ¡7.0 ¡7.4 ¡6.6 ¡6.9 ¡8.0 ¡Glicerina ¡6.0 ¡5.2 ¡5.6 ¡5.0 ¡5.2 ¡6.0 Sorbitol ¡4.2 ¡3.6 ¡3.9 ¡3.5 ¡3.6 ¡4.2 DEA of cocoamide 8.0 ¡8.0 ¡.0 ¡6.6 ¡6.9 ¡8.0 DEA de capramida 4.0 4.0 4.0 4.0 3.3 3.4 4.0 PEG-60-Glyceride of ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ Bencenamide Chloride - 2.0 ¡¡¡¡¡¡¡! ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡! Alquilpoliglucósido ¡¡¡1.0 ¡1.0 ¡¡Plantaren 2000 (50%) ¡¡ ! ! ! Policuaternio-7 ¡0.04! 0.04 ¡+ + + + + + + Water 14.3¡ 16.9¡ 12.4¡15.6¡15.5¡15.5 + + + + + + + - + Pluronic-F108 3.0 + + Condroitinsulfate ¡0.4! (y) Hydrolyzed protein! 1 Coloring, Perfume, etc. 1.0 ¡1.0 ¡1.0 ¡1.0 ¡1.0 - + - soft 0. 95 ¡1. 05 ¡0. 89 1. fifty ! 1 . 45 ¡1. 25 + - TABLE VII INGREDIENT W222 W210 W233 W231 235 W234 Sodium stearate Stearic acid 16.5 16.5 16.8 16.5 16.5 16.5 + - Capric acid 2.0 2.0 2.0 2.0 2.0 2.0 + + - Sodium hydroxide 2.9 2.9 2.0 4.6 2.9 2.9 Sodium Laureth Sulfate-3 17.5 17.5 17.9 12.5 17.5 17.5 Cocoilsarcosinic acid 2.0 1.7 1.7 1.7 1.7 1.7 Propylene glycol 12.0 12.0 12.2 12.0 12.0 12.0 PEG-12 8.0 6.9 7.0 6.5 + - Glycerin 6.0 5.2 5.3 4.9 5.2 5.2 + Sorbitol 4.2 3.6 3.7 3.4 3.6 3.6 AED of cocoamide 8.0 6.9 7.0 6.8 6.9 6.9 DEA de capramida 4.0 3.4 3.5 3.4 3.4 3.4 + - + - PEG-60-Glyceride 3.0 3.0 3.0 3.0 3.0 Almond Benzenide Chloride - 0.9 ¡0.9 ¡0.9 ¡0.9 ¡0.9 Propil-PG-diamonio ¡¡¡¡¡¡ Alquilpoliglucósido ¡1.0 ¡1.0 ¡1.0 ¡1.0 1.0 ! Plantaren 2000 (50%)! ! ! ! ! ! - + Policuaternio-7 ¡0.04 ¡0.04! 0.04 0.04 0.04 Water 13.9! 15.5¡ 14.9! 14.8¡15.5¡15.5 Animal protein 2.0 ¡¡¡¡ ! hydrolyzed! ! ! ! ! ! ! Laurylphosphoric acid 5.0 ¡¡ PPG-5-lauret-5 ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡! PPG-2-cetearet-9 ¡¡¡¡¡¡6.9 ¡¡ Coloring, Perfume, etc. 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Softness score 1.15¡ 1.05¡ 2.65¡ 2.40 ¡1.90 ¡1.65 + TABLE VIII + 1 INGREDIENT W210 W241 W238 W239 W234 Sodium stearate i i! ! ! Stearic acid 16.5¡ 16.5¡ 16.5¡ 16.5¡ 16.5¡ ] Capric acid 2.0 2.0 2.0 2.0 2.0 ! Sodium hydroxide 2.9 2.9 2.9 2.9 2.9 2.9 Sodium Laureth Sulfate-3,17. 17.5 17.5 17.5 17.5! Cocoilsarcosinic acid 1.7 ¡1.5 ¡1.5 ¡1.5 ¡1.7 Propylene glycol ¡12.0¡ 12.0 ¡12.0 ¡12.0! 12.0 PEG-12 6.9 6.1 6.1 6.1 + - + - + - Glycerin 5.2 4.7 4.7 4.7 5.2 + - + - Sorbitol 3.6 3.3 3.3 3.3 3.6 + - + - Cocoamide DEA 6.9 6.1 6.1 6.1 6.9 + - - + - + - - + - - + - DEA of capramide 3.4 3.0 3.0 3.0 3.4 PEG-60-Glyceride of 3.0 3.0 3.0 3.0 3.0 almond + + + - Bencenamido Chloride 0.9 0.9 0.9 0.9 0.9 Propyl-PG-diammonium + + Alkylpolyglycoside 1.0 1.0 1.0 1.0 1.0 Plantaren 2000 (50%) + + Polyquaternium-7 0.04 0.04 0.04 0.04 0.04 + + Water 15.5 15.5 17.0 15.5 15.5 di-Panthenol 15.5 15.5 17.0 15.5 15.5 + + + - Isostearoilactylate 3.0 sodium Wheat protein 1.5 hydrolyzed Dye, Perfume, etc. 1.0 1.0 1.0 1.0 1.0 + - + - + - + - + Softness score 1.21 1.05 1.00 0.95 0.89 + + It should be noted that the softness scores may vary depending on the time of year and the geographic area where the tests are made. Moreover, the softness scores of the bars in tables IV-VIII were compared with the scores obtained in commercially available products, and particularly in the products that are known to have a reputation for being relatively mild, such as the cleaning rod. "Dove." The bar soap "Ivory" was seen as a control for a so-called "irritant" product. It is useful in the appreciation of softness scores to understand that these scores can vary greatly depending on the time of year and other factors. For example, it was found that the softness score of the Dove cleaning bar carried out over a period of more than one year ranged from 1.05 to as high as 2.65. In this way, whenever the bars of this invention were evaluated, the softness of both products, Dove and Ivory, was also evaluated. The following table IX summarizes the softness scores of various bar compositions of this invention and the scores for each of the "Dove" and "Ivory" products.

TABLE IX + + BAR! Rate! Score- Score- Score- Score- Score- Score Evaluation Training ¡tion ¡tion ¡tion ¡¡August ¡Nov. March, October, Dec., March, July, Dove, 1.29, 2.4, 2.25, 1.05, 1.85, 2.65, 1.16, Ivory, 2.63, 3.5, 4.30, 2.26, 3.00, 2.89, Wll, 0.99! ! ! ! ! ! W18 ¡0.99! ! i W22! 1.03 - + - W24 1.1 W55 2.5 W70 2.4 + -! - W105 2 40 + W102 2 05 + W124 2, 00 + W114 ¡1.80 ¡- + - - + + - ¡1.42 1.21 - + - - + - 1 05 + W178 ¡0 95 W203 ¡0 89 - + - W217 ¡1.50 - + W220 1.45 W218 1.25 W222 1.15 W210 1.05 - + - + W233 2.65 + - W231 2.40 - + - + - - + W235 1.90 W234 ¡1.65 1.21 - + - - + - - + - - + - 1.05 - + - - + - - + - - + - 1W238 1.00 + - + -! 0.95 - + - - + - - + - - + - - + ¡0.95 - + Reviewing this table, it should be noted that the raw softness scores taken in August reveal that the bars Wll, W18, W22 and W24 were lower than those of the Dove and Ivory bars. In the November scores, the W55 and W70 bars were approximately on par with the Dove bar and lower than the Ivory bar.

Claims (13)

NOVELTY OF THE INVENTION CLAIMS

1. - A clear cleaning bar composition comprising: (a) from about 10 to 45% by weight of a synthetic detergent, with a main portion of the detergent being an ethoxylated and sulphated long-chain alkyl alcohol of the formula R- (OCH CH2) ) n-0-S03X wherein R is an alkyl group having from 12 to 16 carbon atoms, n is 2 or 3; and X is an alkali metal or alkaline earth metal; (b) from about 10 to about 30% by weight of a polyhydric alcohol of the formula: H (OCH CH) nOH wherein n has an average value of 6 to 16; (c) from about 15 to about 30% by weight of a water-soluble soap, said soap being the reaction product of long-chain fatty acids with an alkali, and wherein the ratio of said water-soluble soap to said detergent synthetic varies from about 1: 1 to about 1: 2; (d) from about 5 to about 20% of a fatty acid alkanolamide; (e) from 0 to about 15% by weight of an alkyl sarcosic acid of the formula: O O R - C - N - CHC - OH I CH3 wherein R is alkyl having from 10 to 16 carbon atoms; (f) from 0 to about 10% by weight of a nonionic alkyl polyglucoside of the formula: where X is greater than 1 and less than 2; and wherein said composition has a pH of not less than about 7.5 and contains at least about 17% by weight of said soap.

2. The composition according to claim 1, further characterized in that R is lauroyl in said ethoxylated and sulfated long chain alkyl alcohol, and X is sodium, and wherein said composition has a pH of not less than about 8.

3 The composition according to claim 2, further characterized in that the amount of polyhydric alcohol present is at least equal to the amount of soap in said composition.

4. The composition according to claim 3, further characterized in that the amount of fatty acid alkanolamide present is about 10-15% by weight of said composition.

5. The composition according to claim 4, further characterized in that the amount of said alcohol exceeds the amount of said soap.

6. The composition according to claim 5, further characterized in that said water-soluble soap is formed in situ by the reaction of the long-chain fatty acids with an alkali.

7. The composition according to claim 6, further characterized in that the ratio of said alcohol to said soap is from at least 1.25 parts of alcohol to about 1 part of soap.

8. The composition according to claim 7, further characterized in that the amount of soap present is at least 18% by weight.

9. The composition according to claim 8, further characterized in that the amount of said ethoxylated and sulphated long chain alkyl alcohol is about 15 to 35% by weight of said composition.

10. The composition according to claim 9, which contains from about 1.0 to about 3.0% by weight of said polyglucoside.

11. The composition according to claim 10, which contains from about 5 to about 10% by weight of said alkyl sarcosic acid.

12. - The composition according to claim 11, which also contains a beneficial agent for the skin.

13. The composition according to claim 12, further characterized in that said agent is present in an amount ranging from about 0.5 to about 3% by weight of the composition. SUMMARY OF THE INVENTION A clear cleaning stick composition comprising from about 10 to 45% by weight of a synthetic detergent is provided, with a main portion of the detergent being an ethoxylated and sulphated long chain alkyl alcohol of the formula R- (OCH CH2) n- 0-S03X wherein R is an alkyl group having 12 to 16 carbon atoms, N is 2 or 3; and X is an alkali metal or alkaline earth metal; and from about 10 to 30% by weight of a polyhydric alcohol of the formula: H (0CH CH2) n0H wherein n has an average value of 6 to 16; from about 15 to about 30% by weight of a water soluble soap, and wherein the ratio of the soap to the synthetic detergent ranges from about 1: 1 to about 1: 2; from about 5 to about 20% by weight of a fatty acid alkanolamide; from 0 to about 15% by weight of an alkyl sarcosic acid of the formula: O or ll R - C - N - CHC - OH CH3 wherein R is alkyl having from 10 to 16 carbon atoms; and from 0 to about 10% by weight of a nonionic alkyl polyglucoside of the formula: where X is greater than 1 and less than 2; and wherein the composition has a pH of not less than about 7.5 JN / cgt * P99 / 470F