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CN-121971303-A - High-stability thickening system and application

CN121971303ACN 121971303 ACN121971303 ACN 121971303ACN-121971303-A

Abstract

The application relates to the field of daily cosmetics, and mainly relates to a thickening system with high stability and application thereof. A high-stability thickening system comprises, by mass, 0.001-5.0 parts of cetostearyl alcohol, 0.001-3.0 parts of cocamide MEA, 0.001-3.5 parts of cocamide DEA and 0.1-3.0 parts of di (hydrogenated tallow) phthalic acid amide. The thickening system with high stability and excellent skin feel can bring lasting pearlescent effect when applied to personal care products, and is suitable for wider formula environments.

Inventors

  • CHEN ZHONGDONG
  • WU FENG
  • LI YINGYI

Assignees

  • 佛山市八达日用化工用品有限公司

Dates

Publication Date
20260505
Application Date
20260212

Claims (10)

  1. 1. A high-stability thickening system is characterized by comprising, by mass, 0.001-5.0 parts of cetostearyl alcohol, 0.001-3.0 parts of cocamide MEA, 0.001-3.5 parts of cocamide DEA and 0.1-3.0 parts of di (hydrogenated tallow) phthalic acid amide.
  2. 2. The high stability thickening system of claim 1, wherein the cetostearyl alcohol is 0.1 to 2.0 parts, the cocamide MEA is 0.5 to 2.5 parts, the cocamide DEA is 1.0 to 3.0 parts, and the di (hydrogenated tallow) phthalic acid amide is 0.3 to 2.0 parts.
  3. 3. Use of a thickening system based on the high stability of any one of claims 1-2 in personal care products.
  4. 4. Use of a highly stable thickening system according to claim 3 in personal care products, wherein the highly stable thickening system is added in an amount of 0.1-10% by mass to the personal care product.
  5. 5. The use of a highly stable thickening system according to claim 4 in personal care products, wherein the highly stable thickening system is added in an amount of 4-6% by mass to the personal care product.
  6. 6. Use of a highly stable thickening system according to claim 3 in a personal care product, wherein, in the preparation of the personal care product, the cetostearyl alcohol, the cocoamide MEA, the di (hydrogenated tallow) phthalate amide are added to a solvent in the aqueous phase and dissolved with stirring at 70-90 ℃; Then cooling to 40-50 ℃, adding the cocamide DEA, and stirring uniformly.
  7. 7. Use of a highly stable thickening system according to claim 3 in a personal care product, wherein when the personal care product is a shampoo, it comprises the following preparation raw materials in mass percent: 1-10% of humectant, 10-30% of surfactant, 0.001-2.5% of beaded film, 0.1-10% of high-stability thickening system and water; 0.1-1% preservative, 0.1-5% hair conditioner, 0.01-1% perfume essence, and pH regulator.
  8. 8. The use of a highly stable thickening system according to claim 7 in personal care products, wherein the beaded finish is 0.2-2.0%.
  9. 9. The use of a highly stable thickening system according to claim 7 in personal care products, wherein the humectant comprises one or a mixture of two of glycerin, propylene glycol; The surfactant comprises one or more than two of sodium laureth sulfate, lauramidopropyl betaine and sodium C14-16 olefin sulfonate.
  10. 10. The use of a highly stable thickening system according to claim 7 in personal care products, wherein the method of preparing a shampoo comprises the steps of: Mixing the humectant, the surfactant, the beaded sheeting, the other raw materials except the cocamide DEA of the high-stability thickening system and the water, heating to 80-90 ℃, and uniformly stirring to obtain a phase A; The A phase is cooled to 40-45 ℃, and the preservative, the hair conditioner, the perfume essence, the pH regulator and the cocoamide DEA in the high-stability thickening system are added and stirred uniformly to obtain a premix; and cooling the premix to 38-40 ℃ to obtain the shampoo.

Description

High-stability thickening system and application Technical Field The application relates to the field of daily cosmetics, and mainly relates to a thickening system with high stability and application thereof. Background In cosmetic formulations, thickening systems are the core in building the skeleton of the product, which not only directly affects the viscosity, rheology and appearance (e.g. pearlizing effect) of the product, but also is closely related to the stability, spreadability and end use feel of the product. Currently, commonly used thickening systems include: 1. high molecular polymer thickening system (such as carbomer, acrylic acid (ester) copolymer, etc.) is sensitive to ions, and is easy to generate 'rubbing' phenomenon, and skin feel is usually sticky and greasy. 2. Inorganic salt thickening systems (e.g., sodium chloride, ammonium chloride) are mainly used in surfactant systems, are sensitive to the pH of the system, have limited thickening ability, and excessive addition can lead to dry skin feel, product dilution, and the like. 3. The traditional fatty alcohol and surfactant compound system is the most commonly used method in the existing cream emulsion, and is usually compounded by using cetostearyl alcohol, peregal, tween and other emulsifying agents. However, such systems have the following pain points: (1) Stability challenges are that the product is sensitive to formulation technology (such as homogenization temperature and speed) and is easy to cause problems of water separation, delamination and the like after long-term storage. (2) The skin feel is single, the built paste is thick, heavy and greasy, and the modern high-end skin feel with refreshing and silky feel is lacked. (3) The pearlescent effect is not durable, and the added pearlescent flakes are easy to settle, so that the appearance of the product is not uniform. Therefore, there is a strong need in the art to develop a novel thickening system that combines high stability, excellent skin feel (silky, fresh, non-tacky) and long lasting pearlescence, and is adaptable to a wider range of formulation environments. Disclosure of Invention In view of the above-mentioned shortcomings of the prior art, the present application aims to provide a thickening system with high stability and application, and aims to provide a thickening system with high stability and excellent skin feel. The technical scheme of the application is as follows: A high-stability thickening system comprises, by mass, 0.001-5.0 parts of cetostearyl alcohol, 0.001-3.0 parts of cocamide MEA, 0.001-3.5 parts of cocamide DEA and 0.1-3.0 parts of di (hydrogenated tallow) phthalic acid amide. Further, the cocoamide DEA is 1.0 to 3.0 parts, and the di (hydrogenated tallow) phthalic acid amide is 0.3 to 2.0 parts. The thickening system realizes high stability and excellent skin feel by cooperatively constructing a three-dimensional network skeleton through specially selected four components. Cetylstearyl alcohol is taken as a main framework, a flaky crystal network is formed when the cetylstearyl alcohol is cooled, cocoamide MEA and cocoamide DEA form a reinforcing effect similar to a cement-framework through the strong hydrogen bond action of an amide bond and fatty alcohol hydroxyl, the two are compounded to realize multi-dimensional network reinforcement, the phthalic diamide group of di (hydrogenated tallow) phthalic acid amide and an amide compound generate intermolecular action to form a high-efficiency gel network, and the nonionic property of the high-efficiency gel network endows the system with strong tolerance to ions and pH. The four are cooperated to form a compact elastic network, and the compact elastic network is verified to have excellent stability through high temperature (48 ℃) and low temperature (-10 ℃) and centrifugal experiments, and meanwhile, the paste has rich thickness and light silky feel through the balance of hydrogen bond density regulation and intermolecular acting force, so that the greasy feel of a traditional fatty alcohol system is broken, the fresh and non-sticky high-grade skin feel is realized, and the paste is insensitive to emulsification process conditions and has wide adaptability. The application also provides the use of a highly stable thickening system in personal care products. Further, the high stability thickening system is added in an amount of 0.1 to 10% by mass to the personal care product. Further, the high stability thickening system is added in an amount of 4-6% by mass to the personal care product. Proper amount of high-stability thickening system is added into personal care products, so that the compatibility of the formula and the balance of performances can be well realized. The thickening system with high stability and the surfactant system can exert excellent compatibility, and synergistically enhance the thickening efficiency and the foam stability with anionic, cationic and nonionic surfactants. The nonion