Liquid cleansing composition

Abstract

To provide liquid cleansing compositions which are processable and stable and deliver consumer benefits (e.g., moisturization and skin lightening) to the skin.SOLUTION: A liquid cleansing composition comprises: 1) 10 to 45 wt.% of C8-C20 fatty acid or fatty acid soap; 2) less than 5 wt.%, preferably 1 to 3 wt.% of synthetic surfactant; 3) 0.1 to 5 wt.% of 12-hydroxystearic acid (12-HSA); 4) 20 to 50 wt.% of polyol; and 5) 0 to 5 wt.% of cationic polymer.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to liquid cleansing compositions, particularly those that are processable, stable, and skin friendly. It relates to compositions that provide consumer benefits (eg, moisturizing, whitening). [Background technology]

[0002] In a liquid cleansing composition suitable for consumers, the composition is processable (e.g., mixed blends). Stable) and has a rheology that allows all ingredients to mix without clogging the grade. (e.g., no phase separation at a defined temperature for a defined time) It should have rheological properties that provide an appropriate sensory experience. It would be desirable to add ingredients that have the following benefits:

[0003] One molecule that is particularly beneficial for incorporation into such liquids is 12-hydroxystearin. 12-HSA is a type of fatty acid that may affect skin health. It is a well-known peroxisome proliferator-activated receptor ("Ppar") activator.

[0004] However, the incorporation of 12-HSA into liquid formulations has the potential to affect formulation structuring, formulation viscosity, This is a challenge as it can affect processing, stability, and In the absence of instructions regarding the inclusion of 12-HSA, its use is usually to thicken or thin the formulation. This leads to polymerization, condensation, and / or phase separation (instability) over time.

[0005] Specifically, formulations with low concentrations of synthetic surfactants, primarily based on fatty acids and fatty acid soaps, Compositions (i.e. fatty acids and fatty acid soaps, preferably C8-C 20 Fatty acids and stones A composition having a combination of soap and 50% of other surfactants. In excess of 12-HSA, the use of 12-HSA is generally inprocessable and unstable. (i.e., not "stress" stable as defined), or both. results.

[0006] Very surprisingly and unexpectedly, the Applicant has found that such predominantly fatty acids and fats In a low-synthesis surfactant composition based on a fatty acid soap, the composition has excellent processability and stability. Formulation win-win that allows the use of 12-HSA while retaining both The formula window is based on specific myristic acid (45% of all fatty acids used). ~65% by weight), the lower limit level (20% by weight or more of the composition, preferably 21 to 40% by weight Most preferably, it should be used in combination with a polyol of 25 to 35% by weight. Compositions that do not fall within the scope of this specific myristic acid include those that do not fall within the scope of this specific myristic acid. or having a lower limit level of polyol (e.g., glycerin, polyalkylene glycol) Unsaturated compositions do not meet both processability and stability requirements.

[0007] The use of 12-HSA in soap bar compositions is not new.

[0008] U.S. Patent No. 6,730,643 to Chokappa et al. Disclosed is a transparent soap bar comprising 30-60% by weight total fatty matter ("TFM"), wherein 1- 15% by weight is a salt of 12-hydroxystearic acid or a precursor thereof. The composition is in the form of a rod and is defined to address stability issues and to stabilize liquid compositions. The choice of myristic acid at the fatty acid level is irrelevant.

[0009] U.S. Patent No. 5,876,705 to Uchiyama et al. Conditioning shampoos that may contain 0.9-10% fatty compounds, including 12-HSA These are not fatty acid based systems and address the problems associated with the compositions of the present invention. Neither the problem nor the solution is considered.

[0010] No. 5,885,948 to Glenn, Jr. et al. Specifications; U.S. Patent No. 6,080,707; and U.S. Patent No. 6,080,708 The specification describes a crystalline hydroxypropyl 12-HSA-containing liquid stabilizer of 0.5 to 10% by weight. Liquid compositions containing sil-containing liquids are disclosed. Fatty acid-based compositions are also disclosed. have not been aware of any problems associated with such compositions; Considering the specific solutions of the invention (i.e., myristic acid frame, lower polyol level) There is nothing to do. [Prior art documents] [Patent documents]

[0011] [Patent Document 1] U.S. Patent No. 6,730,643 [Patent Document 2] U.S. Patent No. 5,876,705 [Patent Document 3] U.S. Pat. No. 5,885,948 [Patent Document 4] U.S. Patent No. 6,080,707 [Patent Document 5] U.S. Patent No. 6,080,708 Summary of the Invention [Means for solving the problem]

[0012] The present invention relates to 1) 10-45% by weight of C8-C 20 , preferably C 10 -C 20 or C 12 -C1 8 fatty acids or fatty acid soaps (containing 0.1-5% 12-HSA as described in point (3) below) ) and the fatty acid content is 45 to 65%, preferably 50 to 63%, more preferably 55 to 65%, based on the total fatty acid content. 62% are C 14 myristic acid, a fatty acid or fatty acid soap; 2) less than 5% by weight, preferably 1 to 3% by weight, of a synthetic surfactant; 3) 0.1 to 5% by weight, preferably 0.5 to 4% by weight, of 12-hydroxystearic acid (12-HSA), and 0.1 to 5% of 12-HSA is 10 to 45% of the above paragraph (1). % of fatty acids, 12-hydroxystearic acid, 4) 20 to 50% by weight, preferably 21 to 40% by weight, more preferably 25 to 35% by weight % polyol, and 5) 0 to 5% by weight, preferably 0.01 to 3% by weight, preferably 0.03 to 2% by weight Cationic Polymer A liquid cleansing composition comprising: The pH of the liquid cleanser composition is 8.0 to 11.0, preferably 8.5 to 10.0. The present invention provides a composition comprising: DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Except in the examples or where otherwise expressly indicated, amounts of ingredients or reaction conditions may vary. All numbers in this description indicating the properties, physical properties and / or use of materials are in accordance with the terms Unless otherwise specified, all amounts are to be understood as being modified by "about." By weight of composition.

[0014] In specifying any range of concentrations or amounts, any particular upper concentration may be It should be noted that the concentration or amount can be related to the concentration or amount.

[0015] For the avoidance of doubt, the term "comprising" means "comprising" but not necessarily "consisting of" or "consists" does not necessarily mean "consisting of." In other words, the recited steps or selections The list does not need to be exhaustive.

[0016] The disclosure of the invention found herein is intended to be interpreted as though the claims were found without multiple dependency or redundancy. All claims that appear in the claims as being multiple dependent on one another, regardless of the fact that they may be The present invention should be considered as including all embodiments.

[0017] The present invention relates to a liquid cleansing composition, particularly a primarily fatty acid cleansing composition, which contains 12-HSA as a benefit agent. Regarding acid soaps and fatty acid-based liquids. 12-HSA has an impact on skin health It is a well-known Ppar activator that can

[0018] However, 12-HSA may have a beneficial effect on the structuring, rheology, processing, and / or stability of the formulation. This may affect the quality of the product (e.g., formation of phase-separated products).

[0019] The applicants have determined that the fatty acids and fatty acid soaps in the final composition are within defined compositions and ranges. (In low-synthetic surfactant compositions based on fatty acids and fatty acid soaps) If polyols are kept at defined lower levels (at least a certain amount of 12-HSA must be incorporated in a manner that allows for processability and stability of the final formulation. where "processable" and "stable" are defined below. .

[0020] fatty acid The composition of the present invention is preferably from 10% by weight to 45% by weight, more preferably from 20% by weight to 45% by weight. More preferably, the fatty acid or fatty acid soap contains 25% to 45% by weight of fatty acid or fatty acid soap. The chain length of fatty acid soap is C8-C 20 , preferably C 10 -C 20 or C 12 -C 18 Yes The 10-45% range contains 0.1-5% 12-HSA.

[0021] Applicants have incorporated 12-HSA to maintain processability, stability, or both. Specifically, we found that the specific range of myristic acid required for the synthesis of 45% to 65% is preferable. Preferably, the content of free fatty acids (unneutralized fatty acids) is 50 to 63%, more preferably 55 to 62%. Fatty acid) is C 14 (Myristic) fatty acids must be present.

[0022] Surfactants Use as a co-surfactant in the predominantly fatty acid and fatty acid soap based compositions of the present invention The particular type of co-surfactant that may be used is not critical; it is well known to those skilled in the art. and any anionic, nonionic, amphoteric and / or zwitterionic surfactant. These are, for example, 0 to 5% by weight, preferably 0.5 to 4% by weight, more preferably All that is important is that the surfactant be a low-synthetic surfactant system, preferably present at 1 to 3% by weight.

[0023] 12-HSA The composition of the present invention contains 0.1 to 5% by weight, preferably 0.5 to 4% by weight, of 12-hydroxybutyric acid. Contains cystearic acid, which is 10% to 45% fatty acids and part of fatty acid soaps As shown, compositions are usually based on low synthetic surfactants, fatty acids and fatty acid soaps. The use of 12-HSA in formulations results in processing problems and phase instability. By selecting the type and amount of fatty acid soap and polyol, 12-HSA can be It can be processed and maintained as a stable formulation.

[0024] Polyol Another important component of the formulation of the present invention is that they are present in an amount of more than 20% by weight, preferably 21-40%. %, more preferably 25 to 35% by weight of polyol. OLs are stress-labile even when fatty acid types and amounts are appropriately selected. resulting in phase separation.

[0025] Preferred polyols include glycerin and short chain alkylene glycols, such as proline. Pyrene or ethylene glycol are included.

[0026] Other Ingredients In addition to 12-HSA, the compositions of the present invention may contain, for example, 0 to 15% by weight, preferably 0. Contains 1-10% by weight or 0.1-5% by weight of an oil-soluble emollient or moisturizing oil. These molecules can contain skin benefit agents that help prevent water loss (occlusive), retain moisture, (humectants) or by restoring moisturizing factors to the skin (e.g. amino lipids) , which may increase hydration.

[0027] Examples of moisturizers include petrolatum, silicone, vegetable oils or triglyceride oils. Restorative agents include vitamins (vitamin A or E); lipids (e.g. cholesterol); and vegetable Butter (Shea butter), and minerals such as zinc or magnesium can be.

[0028] The composition may contain 0.1-7% structuring agents. These include, for example, carbohydrate gases. (e.g., cellulose gum), polyacrylates (e.g., Carbopol® The polymer may include fluoropolymers such as fluoropolymers (Trademark), Aculyn® polymers, or mixtures thereof.

[0029] The composition may also contain 0.01-2% or 1% preservatives (e.g., paraben, methylisothiazol, ozolinone, benzoic acid, phenoxyethanol and mixtures thereof).

[0030] They may contain one or more additional ingredients. Non-limiting examples of such additional ingredients include: For example, colorants, pigments, opacifiers, fragrances (encapsulated or present as free fragrance) Whether or not you consume them, emotive oils, vitamins and vitamin derivatives Conductors, abrasives, optical agents (including, for example, reflective particles and interference pigments), pH adjusters, plant extracts Exfoliants, essential oils, preservatives, antioxidants, antibacterial agents, viscosity regulators, water retention agents, beard Beard wetting agents, sensates, fatty acid soaps, and leather Skin and / or hair benefit agents (e.g., aloe, allantoin, to name a few) Panthenol, alpha hydroxy acids, phospholipids, botanical oils, amino acids) The selection and amount of any individual additional ingredient will depend on the particular ingredient, the properties desired, and how it will be used. The amount of fragrance used will depend on factors including the intended use of the composition. For example, fragrances typically make up 0. For most compositions, the amount of such additional ingredients is 1 to 3.0% by weight or more. The total amount is from 0.01 to 30% by weight, more specifically from 0.1 to 1 5% by weight, and even more specifically, 1 to 10% by weight. The total amount of such additional optional ingredients is 0.5 to 5% by weight.

[0031] The composition is an aqueous system and generally contains 5 to 40% by weight, preferably 8 to 20% by weight, of water. After all the ingredients described above have been considered, water is the balance amount.

[0032] The composition of the present invention has a viscosity of preferably 8.0 to 11.0, more preferably 8.5 to 10.0. Has a pH.

[0033] In another aspect, the present invention provides a stable, processable (both fixed and fixed) soluble 12-HSA-containing gelatinocyte-derived erythrocyte antigen (EGA) comprising: The present invention provides a method for providing a liquid composition (as defined herein), the method comprising the steps of: This includes creating

[0034] Processing The compositions of the present invention are prepared as follows: fatty acids, polyols, structuring agents (e.g., alkylene glycol distearate), and and a chelating agent (e.g., EDTA) were combined in a main vessel and heated to 75-80°C. When the fatty acids were melted, the mixture was stirred. When everything was melted and homogeneous, the heat was turned off. Remove, potassium hydroxide, co-surfactant (e.g., decyl glucoside, etc.), and cathi After cooling, emotive agents, fragrances, and preservatives were added. It was.

[0035] Protocols and Definitions The term "processable liquid cleanser" refers to a liquid cleaner that is equipped with a mixing blade(s). If the product is manufactured in a container that is too large, the blade(s) may no longer be able to mix the ingredients. The skin cleansing liquid composition has a rheology such that the product does not become so thick that it is difficult to apply. It is defined as:

[0036] For the purposes of this invention, mixing is performed with six blades, the blades being rectangular in shape. The blades rotate at 130-140 revolutions per minute (rpm). To rotate.

[0037] If the mixer cannot mix at 130-140 rpm under these processing conditions, The product is deemed too "rich" and cannot be processed.

[0038] "Stress Stable Liquid Cleanser The term "inser" refers to a polymer that does not phase separate when exposed to 45°C for at least two weeks. The present invention is defined as a skin cleansing liquid composition that does not contain any cosmetic ingredients.

[0039] [Example] The following table contains some non-limiting examples of the present invention. Ingredients are listed as percent active ingredient. To be recorded [Table 1]

[0040] In Comparative Example A, myristic acid (used at a level of 17.5%) was used in combination with the total fat content of the oil. Only about 44% (43.9%) of fatty acids and fatty acid soaps are made up of these. Calculate the amount of acid soap, i.e., the amount produced from potassium hydroxide, then calculate the total fatty acids and soap. Specifically, this is calculated by calculating the amount of myristic acid in the Keep in mind: Molar mass ratio of potassium to potassium hydroxide:

number

[0041] -Calculate the % potassium reacted for each condition: Example: Composition A 7.03% KOH is added to the batch so that:

number

[0042] -Myristic acid ratio calculation

number

[0043] At 44% myristin, the composition is not processable, as defined. Therefore, 44% excess of C 14 (Myristic acid) is necessary.

[0044] In comparison B, myristic acid (26.25%) accounted for 75% of the total fatty acids (26.25 / 26. 25 + 7.36 + 1.39 (total fatty acids) + 5.0 (potassium soaps), which is 26. (Equal to 25 / 40% = 65.6%). This comparison failed the stress test; Therefore, C 14 If the level exceeds 65%, the level of myristic acid is too high.

[0045] In Example 1, myristic acid represents 60.18% of the total fatty acids (25% of myristic acid). (Total Fatty Acids and Soaps) / 41.54 (Total Fatty Acids and Soaps). This "sweet spot" of 45-65% is represents the region where the composition is processable and stable (defined as "stress stable" in the protocol). (as it is defined).

[0046] Comparative C has a ratio of myristic acid to total fatty acids and soap of 45-65% (25 / 45.3). 9 or 55.8%), except that the level of 12-HSA is 7 %; which exceeds the upper level of 5% HSA required by the present invention. , this composition is not processable.

[0047] Similarly, in both comparisons D and E, the myristic acid level was at the critical level for total fatty acids and soap. The ratio is within the range of 45% to 65% (25 / 39.97 or 62.5%). The level of 2-HSA is also less than 5%, which is within the level of the invention. The levels of the amines (10% and 15%, respectively) are below the lower limit required by the present invention. Thus, both compositions are not processable.

[0048] In the examples, the calculations refer to the ingredients added. In our examples, only fatty acids were added, Note that no fatty acid soaps were added. However, soaps were added during the formation of the calculations. In this case, the molecule is changed to myristic acid soap in addition to myristic acid (e.g., added or Any myristic acid soap formed during the addition, the denominator is total fatty acids + total fatty acid soaps (KOH or (This does not include the potassium soap formed from KOH as described above) + potassium Therefore, 55-62% of the is the total fatty acid, total fatty acid soap (not including formed potassium soap) and potassium soap The weight percentages of myristic acid and myristic acid soap are shown in Table 1.

[0049] The present invention has been found to define the critical range required for a composition to be processable and stable. Light.

Claims

1. a) 10 to 45% by weight, preferably 20 to 45% by weight, more preferably 25 to 45% by weight % of C ８ -C ２０ , preferably C １０ -C ２０ Or C １２ -C １８ fatty acids or fats An acid soap (containing 0.1 to 5% of 12-HSA according to subparagraph (c) below), 45 to 65%, preferably 50 to 63%, more preferably 50 to 63%, of the total fatty acids and fatty acid soaps. 55-62% are C １４ myristic acid, a fatty acid or fatty acid soap; b) less than 5% by weight, preferably 1-3% by weight, of a synthetic surfactant; c) 0.1 to 5% by weight, preferably 0.5 to 4% by weight, of 12-hydroxystearic acid (12-HSA), wherein 0.1 to 5% of 12-HSA is part of component (a); 2-hydroxystearic acid, d) 20 to 50% by weight, preferably 21 to 40% by weight, of a polyol, e) 0 to 5% by weight, preferably 0.01 to 3% by weight, preferably 0.03 to 2% by weight a cationic polymer, and f) The balance amount of water A liquid cleansing composition comprising: The pH of the liquid cleanser composition is 8.0 to 11.0, preferably 8.5 to 10.

0. the law of nature, The amount (wt%) of myristic acid is determined according to the following formula: [0010] The composition is calculated according to

2. The composition comprises a co-surfactant, and the co-surfactant is an alkyl glucoside. The composition of claim 1.

3. The polyol is selected from the group consisting of glycerin, alkylene glycols, and mixtures thereof. The composition according to claim 1 or 2, wherein the composition is selected from

4. 1. A method for providing a stable and processable liquid composition comprising 12-HSA, said method comprising the steps of: A method comprising forming a composition according to any one of claims 1 to 3.

5. a) combining fatty acid, polyol, water, and optional structuring agent and optional chelating agent in a vessel. A combining step, b) heating the mixture of step a) until all components are melted; c) adding KOH, a cationic polymer, and an optional co-surfactant; and d) Cooling The method of claim 4 , comprising:

Images