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Spherical composite particles and manufacturing method therefor

一种复合粒子、制造方法的技术，应用在医药配方、化妆品配制品、梳妆用配制品等方向，能够解决混入、很难制造树脂粒子、很难控制含有无机微粒等问题，达到改善工序的效果

Active Publication Date: 2014-09-03
DAICEL EVONIK LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with respect to the above-mentioned conventional manufacturing method, a considerable amount of inorganic fine particles can be mixed inside the resin particles, so it is difficult to manufacture target resin particles with inorganic fine particles encapsulated on the outside.
Needless to say, in the above method, it is difficult to controlly contain the inorganic fine particles present on the outside and inside of the resin particles.

Method used

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  • Spherical composite particles and manufacturing method therefor
  • Spherical composite particles and manufacturing method therefor
  • Spherical composite particles and manufacturing method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] 20 parts by weight of polyamide 12 resin (COOH terminal group 123 mmol / kg, SP value 21.7) manufactured by Daicel-Evonik Co., Ltd., powder manufactured by Towa Kasei Kogyo Co., Ltd. as an oligosaccharide A mixture of 65 parts by weight of reduced starch saccharide (trade name "PO-10") and 35 parts by weight of D-sorbitol, and 4 parts by weight of zinc oxide (particle size 0.3 μm, SP value 18.7) treated with stearic acid Parts were melted and kneaded, then extruded into strands (about 3 mm in diameter), and cooled with a belt cooler to produce particles composed of polyamide 12 resin, oligosaccharides, and zinc oxide. Shaped organic solid composition.

[0062] Then, the granular organic solid composition was dissolved in water to make its concentration 5% by weight, and the filter paper of 5A was used to filter under reduced pressure with a Nutsche suction filter, and the washing steps were repeated 10 times, and the water-soluble oligosaccharide was removed from The sph...

Embodiment 2

[0065] In Example 1, 4 parts by weight of titanium oxide (particle size: 0.3 μm, SP value: 18.0) treated with calcium stearate was used instead of zinc oxide, and a twin-screw extruder set at 210° C. was used. An organic solid composition was obtained by the same operation as in Example 1, and spherical composite particles were recovered from the organic solid composition. The center diameter of the obtained spherical composite particles was 1.6 μm. When the spherical composite particles were confirmed with a transmission electron microscope (TEM), it was found that spherical composite particles containing titanium oxide inside the polyamide 12 resin particles were formed. The TEM photograph of gained spherical composite particle is as follows figure 1 shown.

Embodiment 3

[0067] Except that in Example 1, 4 parts by weight of silicon-treated titanium oxide (particle size 0.3 μm, SP value figure 2 shown.

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Abstract

The object of the present invention is to provide a method for producing spherical composite particles, and spherical composite particles obtained by using the method. The method for producing spherical composite particles can effectively provide the surface or interior of spherical composite particles with required functionality. The manufacturing method of the spherical composite particle of the present invention comprises: a meltable organic solid A, a component B incompatible with A, and one or more fillers having a specific difference in solubility parameter SP value relative to A C is melt-kneaded to obtain spherical composite particles of A and C dispersed in B, wherein the method is: a) using C whose SP value difference is less than 5 to obtain spherical composite particles with C encapsulated inside or b) using C with a difference in SP value of 5 or more to obtain spherical composite particles with C encapsulated on the outside; or c) using C with a difference in SP value less than 5 and a difference in SP value of 5 The above C, to obtain spherical composite particles with C encapsulated inside and C encapsulated outside.

Description

technical field [0001] The present invention relates to a method for producing spherical composite particles of an organic solid containing a thermoplastic or thermosetting resin, and the produced spherical composite particles. Specifically, it relates to a method for producing spherical composite particles that are added to powder coatings, cosmetics, toners, etc., or used in molding methods such as sol plastic pouring molding (slash molding), powder lamination molding, etc. And the produced spherical composite particles. Background technique [0002] As a method of producing resin particles, there is known a method of obtaining thermoplastic resin particles by heating and melting a thermoplastic resin and a resin incompatible with the thermoplastic resin, followed by washing with a solvent (Patent Document 1). In addition, as a method of producing a cosmetic material (cosmetic material) containing an inorganic filler and a colorant, it is known that a resin composed of po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/12A61K8/88A61Q1/00B29C67/00
CPCA61K2800/412C08J2377/00A61K8/29C08J3/12A61K2800/654A61Q17/04A61Q1/02A61K8/27A61K8/0283C08J3/128A61K8/88
Inventor 松井秀树中家芳树驹田肇
Owner DAICEL EVONIK LTD
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