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CN-122005366-A - Dual-crystal surfactant, application thereof and facial cleanser

CN122005366ACN 122005366 ACN122005366 ACN 122005366ACN-122005366-A

Abstract

The application discloses a bicrystal surfactant, application thereof and facial cleanser, and belongs to the technical field of cosmetics, wherein the amino acid surfactant comprises, by mass, 5-20 parts of hydrogenated castor oil, 10-40 parts of amino acid surfactant and 53-80 parts of water, and the amino acid surfactant comprises fatty acyl amino acid salt. According to the application, hydrogenated castor oil, an amino acid surfactant and water are combined according to the specific mass part ratio, so that the surfactant with a bicrystal structure is obtained, and the bicrystal surfactant has clear maltese cross and needle-shaped crystal structure under a polarizing microscope, has excellent stability, can keep the bicrystal structure at high and low temperatures, can realize self-thickening, has transparent pearlescent appearance, has excellent cleaning performance, and is suitable for preparing face cleaning products and bath products, and especially suitable for preparing face cleaning products.

Inventors

  • CHEN HAO
  • DU LIKE
  • HUANG YANMEI
  • ZHONG YINGYING
  • OUYANG YILIN
  • Tang Xinian
  • QIN HUIYI

Assignees

  • 广州百孚润化工有限公司

Dates

Publication Date
20260512
Application Date
20260129

Claims (10)

  1. 1. The bi-crystalline surfactant is characterized by comprising, by mass, 5-20 parts of hydrogenated castor oil, 10-40 parts of an amino acid surfactant and 53-80 parts of water; The amino acid surfactant includes fatty acyl amino acid salts.
  2. 2. The bi-crystalline surfactant according to claim 1, comprising the following components, by mass, 10-15 parts of hydrogenated castor oil, 20-30 parts of an amino acid surfactant, and 55-70 parts of water.
  3. 3. The bi-crystalline surfactant of claim 1, wherein the fatty acyl amino acid salt comprises at least one of sodium cocoyl amino acid, potassium cocoyl glycinate, sodium cocoyl amino propionate.
  4. 4. The bi-crystalline surfactant according to claim 1, wherein the hydrogenated castor oil is present in the bi-crystalline surfactant in an amount of 5 to 19% by mass and/or The mass percentage of the amino acid surfactant in the bicrystal surfactant is 9-40.9%.
  5. 5. The bi-crystalline surfactant according to claim 4, wherein the hydrogenated castor oil is present in the bi-crystalline surfactant in an amount of 10 to 15% by mass and/or The mass percentage of the amino acid surfactant in the bicrystal surfactant is 19-32%.
  6. 6. Use of the bimorph surfactant according to any one of claims 1 to 5 in the preparation of cosmetics.
  7. 7. The use according to claim 6, wherein the content of the bicrystal surfactant in the cosmetic is 0.1-60% by mass.
  8. 8. The facial cleanser is characterized by comprising, by mass, 15-25% of a humectant, 4-10% of a betaine amphoteric surfactant, 30-50% of a bicrystal surfactant, 3-6% of an amino acid amphoteric surfactant, 1.5-3% of a thickener and 20-40% of water; The bi-crystalline surfactant is the bi-crystalline surfactant of any one of claims 1 to 5.
  9. 9. The facial cleanser of claim 8, wherein the betaine-type amphoteric surfactant comprises at least one of cocamidopropyl betaine, lauramidopropyl hydroxysulfobetaine, cocamidopropyl hydroxysulfobetaine, and/or cocamidopropyl hydroxysulfobetaine The amino acid amphoteric surfactant comprises at least one of sodium lauroyl amphoacetate, sodium cocoyl amphoacetate and sodium palmitoyl amphoacetate.
  10. 10. The facial cleanser according to claim 8, wherein the humectant comprises at least one of glycerin, propylene glycol, butylene glycol, pentylene glycol, hexylene glycol, glyceryl polyether-26, and/or The thickener comprises an acrylic copolymer.

Description

Dual-crystal surfactant, application thereof and facial cleanser Technical Field The application relates to the technical field of cosmetics, in particular to a bi-crystalline surfactant, application thereof and facial cleanser. Background Along with the upgrading of the skin care concept of consumers, the demand of the cleansing products is changed from pure cleaning and decontamination to mild, non-irritating, stable and easy-to-use (such as extrusion), and the amino acid surfactant has good biocompatibility, low irritation and mild cleaning power, so that the amino acid surfactant gradually replaces the traditional soap-based surfactant and petroleum-based surfactant, and becomes a core raw material of the high-end cleansing products. At present, the cleansing system based on the amino acid surfactant is mainly divided into two major types of crystallization type and liquid crystal type, and the two major types occupy the mainstream market by virtue of unique microstructure and performance characteristics, but the technical bottleneck which is difficult to break through still exists in practical application. The crystallization type amino acid surfactant and the cleansing system enable the amino acid surfactant to be evenly crystallized and separated out in a supersaturated state, so that a stable pearlescent paste structure is formed. The novel face-cleaning agent has the core advantages that a crystallization self-thickening mechanism is adopted, a large amount of chemical thickening agents and emulsifying agents are not needed, however, the technical defects of the crystallization type amino acid surfactant and a face-cleaning system are quite remarkable, firstly, the stability is poor, the novel face-cleaning agent is sensitive to temperature and storage environment, water separation phenomenon is easy to occur at high temperature, hardening and layering are easy to occur at low temperature, paste is easy to coarsen after long-term storage, the pearl texture is attenuated, the appearance and the service cycle of a product are influenced, secondly, the cleaning performance is limited, the wrapping capability of a crystallization structure on grease is weak, the cleaning capability on waterproof color cosmetics and high-grease dirt is insufficient, thirdly, the thickening agents added for improving the stability of the face-cleaning system cover the inherent pearl texture of crystallization, and the pearl agents are needed to be additionally added, and the paste structure is easy to break through excessive addition of filler, the problems of water separation and coarseness are solved, and meanwhile the system mildness is reduced. The thickening principle of the liquid crystal type amino acid surfactant and the face cleaning system is mainly based on a liquid crystal phase formed by the amino acid surfactant, and the amino acid surfactant molecules are self-assembled to form an ordered liquid crystal structure, so that the viscosity of the system can be increased under the condition that a traditional thickening agent is not used. However, the liquid crystal type amino acid surfactant and the cleansing system have the same short plates in the technology, firstly, the cleansing system built by the liquid crystal type amino acid surfactant has no pearlescence, is a fine cream-like paste and has good push-away property, but generally needs to be thickened by a compound polymer, has a certain sticky feel after washing, and has obvious difference from the main flow amino acid cleansing milk in appearance. The existing amino acid surfactant and the existing cleansing system have the defects of unbalanced performance, mildness of a crystal form, incapability of combining the advantages of cleaning power and stability of a liquid crystal form and difficulty in realizing coexistence of two crystal forms in the prior art, so that the development of the amino acid surfactant which can simultaneously have the advantages of the crystal form and the liquid crystal form amino acid surfactant and can avoid the technical defects of the crystal form and the liquid crystal form is a technical problem to be solved urgently by a person skilled in the art. Disclosure of Invention The application aims to overcome the defects of the prior art and provide a bicrystal surfactant, application and facial cleanser thereof, wherein the bicrystal surfactant has clear Maltese cross and needle-shaped crystal structures under a polarizing microscope, has excellent stability, has transparent pearlescent appearance, has excellent cleaning performance, and is suitable for preparing facial cleaning products and bath products, in particular for preparing facial cleaning products. In order to achieve the aim, the first aspect of the application provides a bi-crystalline surfactant, which comprises the following components in parts by mass; The amino acid surfactant includes fatty acyl amino acid salts. The bi-crystalline surfactant in the app