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Aqueous dispersion composition and use of same

A water-based dispersion and composition technology, applied in the direction of medical preparations containing active ingredients, dressing preparations, cosmetics, etc., can solve the problems without any records and revelations, and achieve excellent operability and sufficient hydrophobicity Effect

Pending Publication Date: 2021-04-30
DOW TORAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned literature discloses a production method of the cosmetic itself, especially an aqueous composition that does not contain an oil agent. For the use of hydrophobized microparticle titanium oxide, hydrophobized microparticle zinc oxide, etc., the use of carboxylic acid-modified silicone As a dispersant to form an aqueous dispersion and its specific method, composition and technical effect, there is no record or revelation

Method used

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  • Aqueous dispersion composition and use of same
  • Aqueous dispersion composition and use of same
  • Aqueous dispersion composition and use of same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0163] Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited to these examples at all. Unless otherwise specified, the compounding quantity of each component shows "mass %" ("weight %"). In addition, below, the aqueous dispersion composition of an Example etc. is abbreviated as "aqueous dispersion".

[0164] Carboxylic acid-modified silicone (compound 1 and compound 2) which is the component (A) of this invention was synthesize|combined by the following method.

Synthetic example 1

[0166] Add 230.67 g of trimethylsilyl undecylenate and platinum-1,3-divinyl-1,1,3,3-tetramethyl to a flask equipped with a stirrer, a reflux condenser, a dropping funnel, and a thermometer. 0.042 g of the base disiloxane complex, and 129.33 g of Si-H siloxane represented by the following structural formula were added dropwise so as to maintain the range of 70-80°C.

[0167] [chemical formula 10]

[0168]

[0169] After completion of the dropwise addition, aging was performed at 110° C. for 2 hours, and the disappearance of the Si—H bond was confirmed by a hydrogen generation method. Low boiling point components were distilled off under reduced pressure. Thereafter, 90 g of deionized water was added, and aging was performed for 4 hours under reflux to perform deprotection. Thereafter, the low boiling point components were removed again under reduced pressure to obtain Compound 1. As a result of the analysis, it was confirmed that it was Compound 1 represented by the follo...

Synthetic example 2

[0174] Add 100 g of 1,1,1,3,5,5,5-pentamethyltrisiloxane, platinum-1,3-divinyl- 0.02 g of toluene solution of 1,1,3,3-tetramethyldisiloxane complex was added dropwise to 105 g of undecylenic acid trimethylsilyl ester so as to maintain the range of 70-100°C. After completion of the dropwise addition, aging was performed at 110° C. for 2 hours, and the disappearance of the Si—H bond was confirmed by a hydrogen generation method. Low boiling point components were distilled off under reduced pressure. Thereafter, water was added, and aging was carried out for 4 hours under reflux to perform deprotection. Thereafter, the low boiling point components were again removed under reduced pressure to obtain compound 2. As a result of the analysis, it was confirmed that the chemical structure of Compound 2 is represented by the following chemical formula.

[0175] Compound 2:

[0176] [chemical formula 12]

[0177]

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PUM

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Abstract

[Problem] To provide: an aqueous dispersion composition in which a hydrophobic powder is stably and uniformly dispersed in an aqueous phase, and which has excellent handling properties, while enabling the achievement of sufficient functions such as water repellency, water resistance and sebum resistance in cases where this aqueous dispersion composition is blended into a cosmetic composition and the like; a use of this aqueous dispersion composition (especially, a use as a starting material for a cosmetic composition); and a method for producing a cosmetic composition. [Solution] An aqueous dispersion composition which contains at least (A) a carboxylic acid-modified silicone that is in a liquid state at 50 DEG C, (B) a hydrophobic powder, (C) a basic substance and (D) water, while optionally containing (E) one or more alcohols that are selected from among polyhydric alcohols and ethyl alcohol, and which is configured such that: 80% by mass or more of the entire composition is composed of the components (A)-(E); the component (B) is contained in an amount of from 10% by mass to 70% by mass of the entire composition; and the component (A) is contained in an amount of from 5 parts by mass to 30 parts by mass relative to 100 parts by mass of the component (B). A cosmetic composition starting material and the like, each of which is composed of this aqueous dispersion composition.

Description

technical field [0001] The present invention relates to an aqueous dispersion composition of hydrophobic powder useful as a raw material for cosmetics and its use. Background technique [0002] Inorganic powders, such as fine particles of zinc oxide and titanium oxide with a particle size of several 10 to 100 nm, are often used as additives in sunscreen cosmetics, outdoor inks, and food packaging materials due to their characteristics. If these powders are in an untreated state, the surface is hydrophilic, so there is a possibility that they will be lost due to sweat, rain, and the like. Therefore, especially in applications such as cosmetics, the surface of the particles is hydrophobized with a hydrophobic surface treatment agent such as silane and silicone, and a metal soap, and the like is often used. [0003] On the other hand, since the primary particles of these hydrophobized powders tend to aggregate, when added to cosmetics or paints, aggregated particles may be for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/891A61K8/29A61K8/34A61K8/41A61Q1/02A61Q17/04
CPCA61K8/34A61Q17/04A61Q1/02A61K8/29A61K8/895A61Q19/00A61K2800/10A61K8/345A61K8/894A61K8/04A61K8/892A61K2800/30
Inventor 菊永小百合潘山成神崎康枝宫野淳堀诚司
Owner DOW TORAY CO LTD
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