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Preparation of skin-color rutile type nano-titanium dioxide

A nano-titanium dioxide, rutile-type technology, applied in skin care preparations, cosmetic preparations, cosmetics and other directions, can solve problems such as affecting the performance of cosmetics and low tinting strength of titanium dioxide.

Inactive Publication Date: 2011-04-20
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the tinting power of titanium dioxide itself is very low. In order not to make the skin look pale, a large amount of organic pigments must be added. After the paste cosmetics containing organic pigments are heated, the pigments are separated from the paste, which affects the performance of the cosmetics.

Method used

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  • Preparation of skin-color rutile type nano-titanium dioxide

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0012] Take 10mlTiCl 4 Add the solution (concentration: 1.8mol / L) into the Erlenmeyer flask, take 40mL of deionized water with a measuring cylinder, drop 3 drops of dispersant into it, shake well and add to the above-mentioned Erlenmeyer flask; heat up to 90°C under magnetic stirring in the water bath , stop heating immediately when the solution turns blue (sky blue), and quickly cool the Erlenmeyer flask to room temperature with tap water to prepare seed crystals for later use.

[0013] Add 100mL of TiCl to the three-necked round-bottom flask 4 The solution was slowly heated to 80°C under stirring, the seed crystal prepared in step 1 was added, and 100 mL of boiling water was added, the heating system was kept in a slightly boiling state, and the reaction was carried out for 90 minutes to prepare a rutile nano-titanium dioxide slurry.

[0014] Wash the above slurry until the pH is 4-5, the volume of the mixed slurry is 200mL, heat to 85°C, and slowly drop a quantitative amou...

example 2

[0016] Take 10mlTiCl 4 Add the solution (concentration: 1.8mol / L) into the Erlenmeyer flask, take 40mL of deionized water with a measuring cylinder, drop 3 drops of dispersant into it, shake well and add to the above-mentioned Erlenmeyer flask; heat up to 90°C under magnetic stirring in the water bath , stop heating immediately when the solution turns blue (sky blue), and quickly cool the Erlenmeyer flask to room temperature with tap water to prepare seed crystals for later use.

[0017] Add 100mL of TiCl to the three-necked round-bottom flask 4 The solution was slowly heated to 80°C under stirring, the seed crystal prepared in step 1 was added, and 100 mL of boiling water was added, the heating system was kept in a slightly boiling state, and the reaction was carried out for 90 minutes to prepare a rutile nano-titanium dioxide slurry.

[0018] Wash the above slurry until the pH is 4-5, the volume of the mixed slurry is 200mL, heat to 85°C, and slowly drop a quantitative amou...

example 3

[0020] Take 10mlTiCl 4 Add the solution (concentration: 1.8mol / L) into the Erlenmeyer flask, take 40mL of deionized water with a measuring cylinder, drop 3 drops of dispersant into it, shake well and add to the above-mentioned Erlenmeyer flask; heat up to 90°C under magnetic stirring in the water bath , stop heating immediately when the solution turns blue (sky blue), and quickly cool the Erlenmeyer flask to room temperature with tap water to prepare seed crystals for later use.

[0021] Add 100mL of TiCl to the three-necked round-bottom flask 4 The solution was slowly heated to 80°C under stirring, the seed crystal prepared in step 1 was added, and 100 mL of boiling water was added, the heating system was kept in a slightly boiling state, and the reaction was carried out for 90 minutes to prepare a rutile nano-titanium dioxide slurry.

[0022] Wash the above slurry until the pH is 4-5, the volume of the mixed slurry is 200mL, heat to 85°C, and slowly drop a quantitative amou...

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Abstract

The invention relates to a method for preparing an anti-ultraviolet agent and pigment compound for cosmetics. The method is implemented by two steps of: preparing rutile type nano-titanium dioxide pulp from TiCl4 by an external crystal seed dilution hydrolysis method, hydrolyzing FeCl3 in the pulp, washing, suction-filtering, drying and baking at the temperature of 250 DEG C to prepare a target product. A series of skin-color composite anti-ultraviolet agents with different color depths are prepared by varying the mass percentage of Fe2O3 / TiO2 to be 0.75 percent, 1.00 percent, 1.25 percent, 1.50 percent, 2.00 percent and 3.00 percent respectively, wherein the color is gradually darkened from pale yellow color, milky yellow color, light yellow color, yellowish pink color, light pink color to light brown color. The preparation method has the advantages of low raw material cost, simple process steps, mild reaction conditions, wide color adjustable range and certain actual application prospect.

Description

technical field [0001] The invention relates to a preparation method of skin color rutile nano-titanium dioxide which can be applied in cosmetics. Background technique [0002] Ultraviolet rays are one of the most harmful light waves in sunlight to the human body. Excessive exposure to ultraviolet rays will cause erythema and dark spots on the skin, aging the skin, and even cause skin cancer in severe cases. In recent years, with the improvement of people's awareness of ultraviolet rays and the enhancement of health care awareness, the development and application of sunscreen cosmetics has gradually become a scientific research hotspot. Titanium dioxide has been used as a main sunscreen agent due to its high refraction and high photoactivity. [0003] Due to its small particle size and high activity, nano-titanium dioxide can not only reflect and scatter ultraviolet rays, but also absorb ultraviolet rays, so it has a stronger ability to block ultraviolet rays. Commonly us...

Claims

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Application Information

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IPC IPC(8): A61K8/29A61K8/19A61Q1/02A61Q17/04
Inventor 张海丽董志勇
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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