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Functional polysaccharide particle

A particle and cellulose technology, applied in the field of functional polysaccharide particles, can solve problems such as adverse effects on the ecosystem, and achieve the effect of excellent oil absorption

Inactive Publication Date: 2020-09-11
NISSAN CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in recent years, there is concern that microbeads will flow into rivers and oceans through sewage treatment, and be ingested by organisms, causing adverse effects on the ecosystem.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0110] [Example 1: Bamboo-derived cellulose particles]

[0111] After adding 1343 g of pure water to 407 g of bamboo-derived cellulose nanofibers (manufactured by Chuetsu Pulp & Paper Co., Ltd.) with a solid content of 10% by mass, the mixture was stirred with a mechanical stirrer for 1 hour to disperse the cellulose nanofibers. This dispersion was pulverized 50 times under a pressure of 220 MPa using a wet micronizer Star Burst (manufactured by SUGINO MACHINE LIMITED CO., LTD.) to obtain a bamboo-derived cellulose nanofiber dispersion. 10 g of the obtained dispersion was put into a watch glass, and dried at 105° C. for 1 hour to remove water. The amount of the obtained residue was measured, and the cellulose concentration (solid content concentration) in water was calculated from the weight difference before and after drying. The resulting concentration was 2.0% by mass.

[0112] Spray-dry 1575 g of the above-mentioned bamboo-derived cellulose nanofiber dispersion for 75 mi...

Embodiment 2

[0113] [Example 2: Cellulose particles derived from broad-leaved trees]

[0114] After adding 400 g of pure water to 400 g of broad-leaved tree-derived cellulose nanofibers (manufactured by Daio Paper Co., Ltd.) with a solid content of 2% by mass, the cellulose nanofibers derived from broad-leaved trees were stirred for 1 hour with a mechanical stirrer. dispersion. 800 g of this dispersion was spray-dried for 26 minutes under the conditions of an atomizer rotation speed of 30,000 rpm, an inlet temperature of 182° C., and a cyclone differential pressure of 0.5 kPa to obtain 1.01 g of a powder as the title particle. During this period, the outlet temperature varied between 102°C and 77°C.

Embodiment 3

[0115] [Example 3: Cellulose particles derived from coniferous trees]

[0116] After adding 400 g of pure water to 400 g of conifer-derived cellulose nanofibers (manufactured by Daio Paper Co., Ltd.) with a solid content of 2% by mass, stir with a mechanical stirrer for 1 hour to make the conifer-derived cellulose nanofibers dispersion. 800 g of this dispersion was spray-dried for 26 minutes under the conditions of an atomizer rotation speed of 30,000 rpm, an inlet temperature of 178° C., and a cyclone differential pressure of 0.5 kPa to obtain 2.70 g of a powder as the title particle. During this period, the outlet temperature was kept constant at 17°C.

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Abstract

The purpose of the present invention is to provide a cellulose particle which is a natural material and has a softness and excellent light scattering properties. Provided are: a particle which has a wrinkled or folded uneven surface structure and comprises cellulose or a cellulose derivative as a main component; and a method for producing the particle. This particle has a softness and excellent light scattering properties and, therefore, is useful in cosmetics.

Description

technical field [0001] The present invention relates to particles having a wrinkled or wrinkled uneven structure on the surface and containing cellulose or cellulose derivatives as a main component, a method for producing the same, and cosmetics containing the particles. Background technique [0002] Porous fine particles are used in a wide range of fields as various additives such as abrasives, matting agents (light diffusing agents), carriers, water-absorbing materials, fillers, and anti-blocking agents depending on their material, shape, and physical properties. [0003] Among porous particles, microbeads usually refer to plastic particles (particles ranging from a few μm to hundreds of μm) such as polyethylene and polypropylene, and are also widely used in washing products (such as facial cleansers, body washes), oral care, etc. Aromatic cosmetics such as products (eg, dentifrice), cosmetics (eg, foundation), etc. Specifically, microbeads are used in facial cleansers, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B15/00A61K8/73A61Q1/00A61Q19/00
CPCA61K8/73A61Q19/00A61Q1/00C08L1/02C08J3/12A61K8/731A61K8/0245A61K2800/26A61K2800/10A61K2800/413A61K2800/60A61K2800/805C08B15/00
Inventor 井本鹰行
Owner NISSAN CHEM IND LTD
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