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Easy-to-disperse sericite for cosmetics and preparation method thereof

An easy dispersibility, cosmetic technology, applied in the direction of dyeing organosilicon compound treatment, dyeing low molecular organic compound treatment, fibrous filler, etc., can solve problems such as easy peeling, and achieve reduced aggregation, refreshing skin feel, and excellent gloss. Effect

Inactive Publication Date: 2015-07-08
WUHAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the temperature is lower than 100°C, the adsorbed water on the surface of the sericite particles produces a large number of hydroxyl groups, which is beneficial to the bonding between the sericite and the modifier, but the modifier is only physically coated on the surface of the sericite. easy to shed

Method used

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  • Easy-to-disperse sericite for cosmetics and preparation method thereof
  • Easy-to-disperse sericite for cosmetics and preparation method thereof
  • Easy-to-disperse sericite for cosmetics and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Add 200g of sericite powder for cosmetics (Chuzhou Gerui) into the high-speed mixer, stir and disperse under the rotating speed of 1000rpm, when the temperature reaches 70°C, add the surface treatment agent ( The mass ratio of N-octyltriethoxysilane: polymethylhydrogensiloxane: polydimethylsiloxane: isopropanol = 25:25:50:100), after continuing to stir for 1h, use an electric heating drum Air drying oven aged at 105°C for 1 hour to obtain sericite for cosmetics with easy dispersibility.

[0046] For the obtained sericite (powder) for cosmetics with easy dispersibility, the particle morphology of the powder and the dispersion of the surface treatment agent are illustrated by SEM photos. figure 1 . Depend on figure 1 It is known that the surface modifier is densely distributed on the surface of sericite crystals in a star-like manner. By infrared spectrum (IR) figure (KBr tablet method)【 Figure 5 In (a)], activation index and contact angle (Table 1) were measured to ...

Embodiment 2

[0048] Add 200g of sericite powder for cosmetics (Chuzhou Gerui) into the high-speed mixer, stir and disperse under the rotating speed of 1000rpm, when the temperature reaches 70°C, add the surface treatment agent ( The mass ratio of N-octyltriethoxysilane: polymethylhydrogensiloxane: polydimethylsiloxane: isopropanol = 25:25:50:100), after continuing to stir for 1h, use an electric heating drum Air drying oven aged at 105°C for 1 hour to obtain sericite powder for cosmetics with easy dispersibility.

[0049] For the obtained sericite (powder) for cosmetics with easy dispersibility, the particle morphology of the powder and the dispersion of the surface treatment agent are illustrated by SEM photos. figure 2 . figure 2 It is known that the surface modifier is densely distributed on the surface of sericite crystals in a star-like manner. By infrared spectrum (IR) figure (KBr tablet method) [ Figure 5 In (b)], activation index and contact angle (Table 1) were measured to i...

Embodiment 3

[0051] Add 200g of sericite powder for cosmetics (Chuzhou Gerui) into the high-speed mixer, stir and disperse under the rotating speed of 1000rpm, when the temperature reaches 70°C, add the surface treatment agent ( Polymethylhydrogensiloxane: polydimethylsiloxane: isopropanol (mass ratio = 50:50:100), after continuing to stir for 1 hour, use an electric blast drying oven at 105°C for 1 hour to obtain Dispersive sericite powder for cosmetics.

[0052] For the obtained sericite (powder) for cosmetics with easy dispersibility, the particle morphology of the powder and the dispersion of the surface treatment agent are illustrated by SEM photos. image 3 . image 3 It is known that the surface modifier is densely distributed on the surface of sericite crystals in a star-like manner. By infrared spectrum (IR) figure (KBr tablet method) [ Figure 5 In (c)], activation index and contact angle (Table 1) were measured to illustrate the surface treatment effect. Figure 5 Medium (c)...

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Abstract

The invention relates to the technical field of nonmetal ore mineral materials and organic surface treatment. Easy-to-disperse sericite for cosmetics is characterized in that the sericite for cosmetics is used as a raw material, surface modification is firstly performed on sericite powder at a low temperature by using a surface treating agent and then high-temperature ageing modification is performed to obtain easy-to-disperse sericite for cosmetics, wherein the surface treating agent is obtained by mixing a modifying agent and a dispersing agent in a mass ratio of 1 to (1-10), the modifying agent is a mixture of any two or three of N-octyl triethoxysilane, polymethylhydrosiloxane and polydimethyl siloxane; the dispersing agent is isopropanol. The easy-to-disperse sericite for cosmetics prepared by the method is good in dispersion, excellent in glossiness, refreshing in skin feel and good in ductility, is in good fit with skin, can meet special needs of high-grade cosmetics and can be used as body pigments for being widely applied to various cosmetics fields.

Description

technical field [0001] The invention relates to the technical field of non-metallic mineral materials and organic surface treatment, in particular to a sericite for cosmetics with easy dispersibility and a preparation method thereof, so that it has excellent glossiness and skin feeling while having easy dispersibility . Background technique [0002] Sericite is a kind of natural fine-grained muscovite, which has a translucent, textured silky luster, a unique high-diameter-thickness ratio structure and excellent UV shielding performance, especially the fine scale-like thin-layer structure is soft and smooth characteristics. Cosmetic-grade sericite priority heavy metal content is far lower than the national standard of high-diameter-thickness ratio raw materials, using the dispersion control method as the center of the formulation technology, eliminating the flaws that affect the skin feel due to the burr edge formed by chip breakage in the traditional process, can be It giv...

Claims

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Application Information

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IPC IPC(8): C09C1/40C09C3/12C09C3/08
Inventor 管俊芳田晶晶高惠民吕化奇
Owner WUHAN UNIV OF TECH
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