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Organic-inorganic composite particles, manufacturing method therefor, and cosmetic

A technology of composite particles and a manufacturing method, which is applied in cosmetics, cosmetics, cosmetic preparations, etc., can solve problems such as hazards of marine and lake ecosystems, and achieve the effects of good biodegradability, less environmental problems, and difficult adsorption.

Pending Publication Date: 2020-10-20
JGC CATALYSTS & CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, plastic products discharged into the water environment accumulate over a long period of time, causing serious damage to the ecosystems of oceans, lakes and marshes.

Method used

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  • Organic-inorganic composite particles, manufacturing method therefor, and cosmetic
  • Organic-inorganic composite particles, manufacturing method therefor, and cosmetic
  • Organic-inorganic composite particles, manufacturing method therefor, and cosmetic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Concentrate 50 g of commercially available silica sol (manufactured by Nikki Catalyst Chemicals Co., Ltd.: SS-300, average particle diameter 300 nm, silica concentration 20% by mass) with a rotary evaporator to obtain 25 g of silica Silica sol with a concentration of 40% by mass. To this silica sol, a cation resin (SK-1B, manufactured by Mitsubishi Kasei Corporation) was added at once to adjust the pH to 2.5, and then the cation exchange resin was separated. Thus, a dealkalization treatment (removal of sodium ions, etc.) was performed to obtain a slurry a having a silica particle concentration of 39.3% by mass. A polymer dispersion obtained by uniformly dispersing 10 g of type I cellulose particles (Ceolus (registered trademark) RC-N30 manufactured by Asahi Kasei Corporation) and 30 g of pure water was added to slurry a to prepare slurry b.

[0072] The obtained slurry b was added to a solution in which 1300 g of heptane (manufactured by Kanto Chemical Co., Ltd.) and 9...

Embodiment 2

[0095] Instead of the type I cellulose particles in the polymer dispersion used in Example 1, BiNFi-s WMa-10002 manufactured by Sugino Machinery Co., Ltd. was used. Except for this, organic-inorganic composite particles were prepared in the same manner as in Example 1, and their physical properties were measured in the same manner as in Example 1.

Embodiment 3

[0097] Instead of the type I cellulose particles in the polymer dispersion used in Example 1, Rheocrysta C-2SP manufactured by Daiichi Kogyo Pharmaceutical Co., Ltd. was used. Except for this, organic-inorganic composite particles were prepared in the same manner as in Example 1, and physical properties were measured in the same manner as in Example 1.

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Abstract

Provided are spherical organic-inorganic composite particles that exhibit good biodegradability. Organic-inorganic composite particles according to the present invention contain 1-79 wt% of a silica component and 21-99 wt% of a biodegradable plastic. The organic-inorganic composite particles have an average particle diameter d1 of 0.5-25 [mu]m, a true density of 1.03-2.00 g / cm3, and a sphericity of 0.80 or greater. A cosmetic in which the organic-inorganic composite particles possessing such characteristics are blended exhibits superior touch feel characteristics.

Description

technical field [0001] The present invention relates to spherical organic-inorganic composite particles having good biodegradability, and cosmetics containing organic-inorganic composite particles. Background technique [0002] Currently, petroleum-derived synthetic polymers (plastics) are utilized in various industries and support modern life. Most synthetic polymers are developed due to the requirement of long-term stability, so they are difficult to degrade in the natural environment. Therefore, various environmental problems are caused. For example, plastic products discharged into the water environment accumulate over a long period of time, causing serious damage to the ecosystems of oceans and lakes and marshes. In addition, in recent years, microplastics, which are called microplastics and whose lengths range from 5 mm or less to nanometer levels, have become a big problem. Examples of substances corresponding to microplastics include small personal consumer goods ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L1/02A61K8/19A61K8/73A61Q1/00A61Q19/00C08J3/16C08K3/36C08L101/16
CPCC08K3/36C08L1/02C08L101/16A61K8/025A61K8/25A61K2800/412A61K8/731A61Q1/12C08J2300/16C08J2301/02C08J3/12C09C1/0081C09C1/3072C01P2006/11C01P2004/62C01P2004/61C01P2006/22C01P2004/64C01P2006/14C01P2004/34C08J3/16A61K8/0279A61Q19/00A61Q1/00C08K7/18C08K7/26
Inventor 渡边慧榎本直幸嶋崎郁子
Owner JGC CATALYSTS & CHEM LTD