Method for preparing zirconium dioxide cosmetics

A technology of zirconia and cosmetics, which is applied in the field of preparing zirconia-containing cosmetics, can solve the problems of low quantum efficiency and low solar energy utilization rate, and achieve the effects of improving optical activity, good sun protection effect, and safe use

Inactive Publication Date: 2012-09-05
NANJING UNIV OF SCI & TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some fields ZrO 2 Large-scale production applications are affected by the ZrO 2 Low Quantum Efficiency and Wide Bandgap Constraints on Defects with Low Solar Energy Utilization

Method used

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  • Method for preparing zirconium dioxide cosmetics
  • Method for preparing zirconium dioxide cosmetics

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Experimental program
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preparation example Construction

[0025] 1. Doped with ZrO 2 Preparation: The methods mainly include precipitation method, sol-gel method, hydrolysis method, mechanochemical method and gas phase infiltration method. The main raw materials are: (1) Zirconium source: zirconium oxychloride (ZrOCl 2 ·8H 2 O), zirconium alkoxide (such as n-butyl zirconium oxide, n-butyl zirconate, tetrabutyl zirconate, etc.) or ordinary ZrO 2 , (2) dopant: can be yttrium oxide (Y 2 o 3 ), ferric nitrate, ammonium fluoride, boric acid, ammonia, etc.

[0026] 2. Preparation of sunscreen cosmetics containing doped zirconia: 1) Preparation of oil phase Add oil, fat, wax, emulsifier and other oil-soluble components into the jacketed dissolution pot, turn on steam heating, and heat under constant stirring To 70 ~ 75 ℃, make it fully melted or dissolved evenly for use. Easily oxidized oils, preservatives and emulsifiers can be added to the oil phase before emulsification, and can be emulsified after being dissolved evenly. 2) Pre...

Embodiment 1

[0029] Contains Y 2 o 3 / ZrO 2 Preparation of sunscreen:

[0030] 1) First ZrOCl 2 ·8H 2 O is made into a 0.4mol / L aqueous solution, and Y is dissolved in concentrated hydrochloric acid 2 o 3 , add water to dilute, and then mix the two, so that the ratio of the amount of substances is Y 2 o 3 :ZrO 2 =8:92. Adjust the pH to 10 with concentrated ammonia. Precipitate, aged at room temperature for 6h, then filtered and washed until the presence of chloride ions could not be detected by silver nitrate. Drying at 110°C followed by calcination at 550°C yielded Y 2 o 3 / ZrO 2 4eV。 , through the ultraviolet spectrum detection, calculation of its bandgap energy is 3. 4 eV.

[0031] 2) The doped zirconia Y obtained in step 1) 2 o 3 / ZrO 2 Mixed with ordinary zirconia in a ratio of 8:2 (50%), stearic acid (10%), cetostearyl alcohol 2%, monoglyceride 1%, white oil 6%, mud parkin methyl ester 0.2% and 0.1% of propyl paraben, heated to about 85°C, it is component A;

...

Embodiment 2

[0034] Contains Fe / ZrO 2 Preparation of sunscreen

[0035] 1) At room temperature, first mix ZrOCl with a ratio of 5:1:2 2 ·8H 2 O, Fe(NO 3 ) 3 ?9H 2 O and ethanol are mixed to form solution A, and then (HNO 3 ) was mixed with ethanol to form solution B. Add solution A drop by drop to solution B under stirring, after the dropwise addition, age for 72 h, the prepared Fe / ZrO 2 9eV。 , through ultraviolet spectrum detection, calculation of its bandgap energy is 3. 9 eV.

[0036] 2) Prepare materials according to the following cosmetic formula: A: deionized water 64% B: EDTA-2Na 0.1%. C: C12-15 alkyl benzoate 15%, a mixture of 1,3-dimethoxy-5,5-dimethylhydantoin and butyl sulfopropynylcarbamate 0.2%, Fe / ZrO 2 6% ZrO 2 0.8% D: Cetearyl Alcohol 5%, Synthetic Hectorite 0.8%, Tween-20 1% E: Lauroyl Lysine 1%, Glycerin 6.%. F: 0.1% mixture of isopropylparaben, isobutylparaben and butylparaben.

[0037] 3) Mix components A and heat to 80°C. Add component B and mix well...

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Abstract

The invention discloses application of zirconium dioxide to cosmetics and a method for preparing cosmetics containing the zirconium dioxide. In the method, the forbidden band width of ZrO2 is reduced by doping ions; and the radii of the foreign ions are different from the radius of Zr, so ZrO2 crystals can be distorted and even defects are caused. The distortion and the defects ensure that the energy level of ZrO2 is split; in addition, the number of valence electrons of impurities is different from that of Zr, new additional energy levels can be formed in a normal energy level, and electronsin a valence band easily transit to the additional energy levels and then transit to a conduction band and the absorption of ZrO2 on medium and long-wave ultraviolet rays is greatly strengthened, so that the optical activity of ZrO2 is improved; and a sunscreen cosmetic is prepared from a sunscreen agent which is formed by matching the prepared doped ZrO2 with ordinary ZrO2 according to an appropriate proportion and can better resist full-waveband ultraviolet radiation.

Description

technical field [0001] The invention belongs to the field of material preparation, in particular to an application of zirconium dioxide in cosmetics and a method for preparing cosmetics containing zirconium dioxide. Background technique [0002] With the improvement of people's living standards and the intensification of international competition, the research and development of safe and efficient sunscreen cosmetics will gradually increase. At present, the sunscreen cosmetics market in developed countries has shown strong vitality. From the perspective of the development trend of sunscreen cosmetics, one is inorganic sunscreen instead of organic sunscreen, and the other is bionic sunscreen. The latter is expensive and difficult to promote at present, while the former is moderately priced and has superior sun protection performance, so it is generally favored. Nano-TiO 2 , ZnO, etc. have strong ultraviolet absorption ability and can be used in cosmetics. At the 4th Sunsc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K8/28C01G25/02A61Q17/04
Inventor 石晓琴杨新民崔崇孙红娣狄长安邹友生徐敏潇贾云飞
Owner NANJING UNIV OF SCI & TECH
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