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Microspherical particles

A spherical particle and tiny technology, which is applied in the fields of dentistry, oral care, and cosmetic preparations, etc., can solve the problems of disintegration of granules and decline in massage effect, and achieve high washing effect and excellent massage effect

Inactive Publication Date: 2019-01-04
NIPPON PAPER IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, in Patent Document 2, there is a problem that a water-soluble binder is used in granulation in order to make crystalline cellulose into granules, and when added to cosmetics or the like containing water, the binder is eluted. , easy to disintegrate the granules and reduce the massage effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1H

[0079] 0.5 kg of powdered cellulose W-100G (manufactured by Nippon Paper Co., Ltd., with an average particle size of 35 μm, an average degree of polymerization of 450, an apparent specific gravity of 0.29 g / ml, and an angle of repose of 58°) was placed in a centrifugal roll In the granulator CF-360N (manufactured by Freund Corp.), granulation was performed by spraying 1.25 kg of water for 100 minutes at a slit air volume of 200 to 300 L / min while rotating the rotary disc. The generated particles were fluidized-dried to obtain fine spherical particles with an average particle diameter of 650 μm, a sphericity of 0.85, a dry hardness of 452 g, and an apparent specific gravity of 0.65 g / ml.

Embodiment 2H

[0081] 1 kg of powdered cellulose W-400G (manufactured by Nippon Paper Co., Ltd., with an average degree of polymerization of 150, an average particle size of 24 μm, an apparent specific gravity of 0.48 g / ml, and an angle of repose of 52°) was loaded into the centrifugal rolling granulator In an apparatus CF-360N (manufactured by Freund Corp.), granulation was performed by spraying 1.2 kg of water for 100 minutes at a slit air volume of 220 L / min while rotating a rotary disc. The generated particles were fluidized-dried to obtain fine spherical particles with an average particle diameter of 340 μm, a sphericity of 0.84, a dry hardness of 247 g, and an apparent specific gravity of 0.83 g / ml.

Embodiment 3H

[0083] During the 100-minute granulation process, the number of sprays of water was increased. In addition, the same operation was performed as in Example 2H to obtain an average particle diameter of 490 μm, a sphericity of 0.87, a dry hardness of 490 g, and an apparent specific gravity of 490 μm. 0.85g / ml tiny spherical particles.

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Abstract

The purpose of the invention is to provide microspherical particles having an excellent massage effect. Another purpose of the invention is to provide microspherical particles that impart an excellentmassage effect and cleansing effect when combined with a cleansing composition or the like. Microspherical particles are formed by powdered cellulose. The average particle size of the microsphericalparticles is 50-2000 [mu]m, the sphericity is 0.7-1.0, and the dry hardness is 1-5000. Particles having a dry hardness of from 1 to less than 210 are soft-type microspherical particles, and particleshaving a dry hardness of 210-5000 are hard-type microspherical particles. A massage composition and cleansing composition are made by combining the microspherical particles.

Description

technical field [0001] The present invention relates to microscopic spherical particles comprising powdered cellulose. Background technique [0002] In cleansing compositions such as cleansing creams and cosmetics, scrubbing agents have been gradually used in order to improve their cleaning properties and massage effects, and are especially popular in many countries such as the United States. [0003] As such a scrubbing agent, inorganic pigments such as talc, mica titanium, and kaolin, and organic material powders such as polyethylene are selected and used. In particular, polyethylene is used as a scrubbing agent with excellent material availability, manufacturability, and massage effect. beads (Patent Document 1). [0004] However, such cleaning agents cannot be removed when they are discharged into sewers because they are minute, and since biodegradability is not required, they tend to accumulate in the environment, and environmental damage to rivers, oceans, etc. has be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/73A61K8/02A61Q19/00A61Q19/10
CPCA61K8/73A61Q19/00A61Q19/10A61K8/02C11D3/14A61K8/025A61K8/731A61K2800/412A61K2800/28A61K8/022A61Q11/00
Inventor 国府裕树山口信也佐治薰
Owner NIPPON PAPER IND CO LTD
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