Supercharge Your Innovation With Domain-Expert AI Agents!

Spherical composite particles and manufacturing method therefor

A composite particle and manufacturing method technology, which is applied in the direction of pharmaceutical formulations, cosmetic preparations, dressing preparations, etc., can solve the problems of mixing, difficulty in controlling the inclusion of inorganic particles, and difficulty in manufacturing resin particles, etc., to achieve the effect of improving the process

Active Publication Date: 2011-11-09
DAICEL EVONIK LTD
View PDF4 Cites 6 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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

[0062] 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.

[0063] 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

[0066] 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

[0068] Except that in Example 1, 4 parts by weight of silicon-treated titanium oxide (particle size 0.3 μm, SP value figure 2 shown.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

Provided are a method for manufacturing spherical composite particles capable of effectively providing desired functions to surfaces or inner parts thereof through a simple process, and spherical composite particles obtained by the method. The method for manufacturing spherical composite particles involves melting and mixing a fusible organic solid (A), an ingredient (B) incompatible with the organic solid (A), and one or more fillers (C) having a difference in specific solubility parameter (SP) with respect to the organic solid (A), and thereafter obtaining spherical composite particles where the organic solid (A) and the filler(s) (C) are dispersed in the ingredient (B). a) A method for obtaining spherical composite particles internally including the filler(s) (C) by using filler(s) (C) having a difference in specific solubility parameter SP of less than 5; b) a method for obtaining spherical composite particles externally including the filler(s) (C) by using filler(s) (C) having a difference in specific solubility parameter SP of 5 or more; and c) a method for obtaining spherical composite particles internally and externally including the filler(s) (C) by using filler(s) (C) having a difference in specific solubility parameter SP of less than 5 and filler(s) (C) having a difference in specific solubility parameter SP of 5 or more.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/12A61K8/88A61Q1/00B29C67/00
CPCA61K8/29A61Q1/02A61K2800/412C08J2377/00B29B7/90A61K8/27B29B7/88A61K8/0204A61Q17/04C08J3/128A61K8/88A61K8/0283C08J3/12A61K2800/654
Inventor 松井秀树中家芳树驹田肇
Owner DAICEL EVONIK LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com