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Structured surfactant suspending systems

A structured surface, surfactant technology, applied in cosmetics, cosmetic formulations, chemical instruments and methods, etc., can solve the problems of limited visual effect, low attractiveness, etc.

Active Publication Date: 2015-01-14
STEPAN COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] Spherulitic surfactant systems produced with high levels of electrolyte are opaque, which limits the visual effects that can be achieved and may be considered less attractive in some applications than clear systems

Method used

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  • Structured surfactant suspending systems
  • Structured surfactant suspending systems
  • Structured surfactant suspending systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] By mixing amine oxide to caprylic / capric glyceryl in a ratio of 1:3 to 2:1 LO amine oxide and GCC Caprylic Glyceride / Capric Glyceride to prepare a series of formulations. The total surfactant for each formulation was 15 wt%. Table B shows the ratio of each surfactant and the visual results of each formulation.

[0051] Form B: w / w blend of GCC in water (15% total surfactants)

[0052]

[0053]

[0054] A ratio of amine oxide to caprylic / capric glycerides of 1:1.5 to 1.25:1 resulted in structured liquids in which clarity increased with increasing amount of amine oxide. The highest clarity was obtained at 1.25:1 w / w amine oxide: caprylic / capric glyceryl.

Embodiment 2

[0056] Glycerin was added to a 1.25:1 w / w blend of amine oxide: caprylic / capric glycerides to determine whether the added glycerin improved the optical clarity of the blend. Table C shows the formulations prepared with the addition of glycerol.

[0057] Table C: Formulations with added glycerol

[0058]

[0059] The formulation was prepared by hand mixing all components at room temperature, storing overnight at 55°C, stirring again, and cooling to room temperature. All formulations are air-suspended structured liquids. There were significant differences in the clarity of the samples. The sample with 5% glycerol was the clearest with very high clarity, then the sample with 10% glycerol, then the sample with 1% glycerol. These results show that adjusting the refractive index of the continuous phase can improve the clarity of liquid crystal dispersions.

Embodiment 3

[0060] Example 3: Glyceryl caprylate / glyceryl caprate and other surfactants

[0061] Formulations were prepared by mixing caprylic / capric glyceryl with different hydrophilic surfactants and dispersing in water. Glycerin was added as needed to adjust the refractive index. Different formulations are shown in Table D.

[0062] Form D

[0063]

[0064]

[0065] Formulations were prepared by manually mixing the components together at room temperature, storing overnight at 55°C, stirring again, and then cooling to room temperature. Including GCC with about 3:1 w / w ratio: Sample 2 of PC 48 and about 15 wt% total surfactant provided a strongly structured surfactant suspension system that was only slightly hazy. Sample 3, which included about a 3:1 ratio of GCC:ALS and about 15 wt% total surfactant, also provided a slightly hazy strongly structured surfactant suspension system. Sample 4, which included about a 4:1 ratio of GCC:SLES and about 12.5 wt% total surfactant, was s...

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Abstract

A structured surfactant system with a very high degree of clarity. The system comprises water and a mixture of at least one surfactant having a HLB (Hydrophilic Lipophilic Balance) value of less than 10, and at least one surfactant having an HLB value of 10 or greater. The structured surfactant system forms multilamellar vesicles and has suspending properties without added electrolytes, carbohydrates, or polymeric thickeners. This makes the structured surfactant system particularly useful in personal care compositions.

Description

technical field [0001] The present technology relates to structured surfactant suspending systems and compositions, particularly personal care compositions, comprising the structured surfactant suspending systems. Background technique [0002] Formulating suspensions of water-insoluble or sparingly soluble solids and / or liquids in personal care compositions such as shampoos and body washes is a longstanding problem. Formulation designers need to be able to suspend many of these ingredients. For example, oils, antidandruff agents (such as zinc pyrithione), hair conditioners (including cationic polymers), and sunscreens (such as mica) are widely used. It is therefore desirable to disperse / suspend them in aqueous shampoos and body washes. [0003] We have discovered novel structured surfactant systems that are able to suspend solid particles and oils without settling using high foaming surfactant systems that provide dense stable foam and good skin feel. [0004] The term "s...

Claims

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Application Information

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IPC IPC(8): A61K8/00C09K23/00
CPCA61K8/39A61K2800/596A61K8/63A61K8/361A61K2800/262A61K8/342A61Q5/02A61K8/604A61K8/0295A61K2800/30A61K8/14A61K8/4973A61Q19/10A61K8/44A61K8/375
Inventor J.豪金斯E.佩斯L.莱伯特
Owner STEPAN COMPANY
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