Polylol-in-oil composition with high vitamin C content and preparation method thereof

A technology of polyol-in-oil and composition, which is applied in the field of polyol-in-oil system with high vitamin C content and its preparation, and can solve the problems of easy oxidative denaturation of vitamin C and poor storage stability, etc.

Inactive Publication Date: 2009-11-25
EVONIK SPECIALTY CHEM SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention ideally solves the problems of easy oxidative denaturation of vitamin C and poor storage stability in cosmetics

Method used

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  • Polylol-in-oil composition with high vitamin C content and preparation method thereof
  • Polylol-in-oil composition with high vitamin C content and preparation method thereof
  • Polylol-in-oil composition with high vitamin C content and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 and comparative example 1 and 2

[0025]

[0026]

[0027] The preparation of the composition of embodiment 1 is carried out as follows:

[0028] 1. Will be made of 25.4wt% cyclomethicone (Dow 345) and 5.5wt% dimethylsiloxane ( 350) composition of the oil phase component, 3wt% emulsifier EM 90 and 3wt% stabilizer R 812S Mix and stir at 20-30°C until homogeneous;

[0029] 2. Add 10.5wt% solid vitamin C to the polyol component composed of 45wt% glycerin and 7.6wt% propylene glycol, heat to 90-100°C and keep for 30-45 minutes until the vitamin C is completely dissolved to form a transparent liquid; then Cool to room temperature.

[0030] 3. Add the vitamin C-containing polyol mixture obtained in step 2 to the mixture obtained in step 1 under stirring at 400-600rpm; then increase the stirring speed to 1000-16000rpm for homogenization to a homogeneous phase, that is, to obtain high vitamin C content polyol-in-oil system.

[0031] The compositions of Comparative Examples 1 and 2 were prepared similar...

Embodiment 2

[0036]

[0037] The formula has shown very good stability after four months of heat resistance at 45°C and one month of cold resistance at -25°C and a centrifugation test at 3000rpm for 30 minutes.

Embodiment 3-4

[0039]

[0040]

[0041] In embodiment 3, adopt polyglycerol-4 diisostearate / polyhydroxystearate sebacate ( GPS) and polyglyceryl-4 stearate ( GI 34) The emulsifier formed by mixing can also form a good stable system. Likewise, adopt diisostearyl polyglycerol-3 dimerized bis-linoleate in embodiment 4 ( PDI) and polyglyceryl-4 stearate ( GI 34) mixed emulsifier, the obtained product also has bright appearance and stable storage effect.

[0042] The preparation methods of Examples 2-4 are carried out with reference to Example 1.

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Abstract

The invention relates to a polylol-in-oil system with high vitamin C content and a preparation method thereof. The polylol-in-oil system with the high vitamin C content basally comprises 0.5 to 5 of emulsifier, 0.1 to 5 of stabilizer, 0.01 to 20 of vitamin C, 10 to 40 of oil-phase constituent and 40 to 80 of polylol constituent by weight percentage. The polylol-in-oil system with the high vitamin C content can effectively improve the stability of the vitamin C and avoids the oxidation degeneration of the vitamin C because the oxygen solubility in polylol is greatly lower than the oxygen solubility in water. In addition, the polylol-in-oil system with the high vitamin C content has an anhydrous prescription and does not need preservative, thereby being safe and healthy. Cetyl polyethylene glycol / polyethylene glycol-10 / 1 dimethyl siloxane (ABIL EM 90) is selected as the emulsifier, and hydrophobic aerosol is selected as the stabilizer so that the polylol-in-oil system with the high vitamin C content can prepare paste or cream with the finally obtained advantages of bright appearance and good stability and can be widely applied to cosmetics.

Description

technical field [0001] The invention relates to a stable oil-in-polyol system with high vitamin C content and a preparation method thereof, which can be widely used in the cosmetics industry. Background technique [0002] In addition to being used as an antioxidant in the pharmaceutical industry, vitamin C is also used as a nutritional enhancer in cosmetics and other fields. However, the active alkenol structure in the vitamin C molecule is susceptible to oxidative denaturation under the influence of moisture, oxygen, light, temperature and heavy metals, and it is difficult to preserve for a long time, especially because vitamin C is very unstable in the aqueous system, thus limiting its application in cosmetics. [0003] For example, in the Chinese patent document CN1466939A, a maleic anhydride copolymer is added to the common formula system to protect vitamin C. Although the degradation of vitamin C has been improved, the product still has the problem of obvious discolora...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/84A61K8/89A61K8/67A61Q19/00
CPCA61K8/676A61K47/14A61K2800/31A61K47/24A61K9/107A61K47/10A61Q19/08A61K8/064A61Q19/02A61K8/345A61P3/02
Inventor 张海州戴静亚邹佳丽高志恒
Owner EVONIK SPECIALTY CHEM SHANGHAI
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