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Surface modified pigment and a cosmetic composition containing the pigment

A technology of cosmetic composition and pigment composition, applied in the direction of dyeing organosilicon compound treatment, cosmetics, cosmetics, etc., which can solve the problems of dull skin, poor water resistance and coverage, dryness, etc.

Active Publication Date: 2013-09-25
(주)케이에스펄
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pigments treated with methicone are unsatisfactory due to poor affinity with skin and drying
Pigments treated with dimethicone derivatives show good coverage, however, it has the disadvantage of poor gloss and dull skin appearance
Pigments treated with amino acid derivatives (e.g. acyl glutamate) show poor water resistance and coverage
Pigments treated with alkylsilanes show good water repellency and adhere to the skin, however, it suffers from poor coverage and non-smoothness

Method used

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  • Surface modified pigment and a cosmetic composition containing the pigment
  • Surface modified pigment and a cosmetic composition containing the pigment
  • Surface modified pigment and a cosmetic composition containing the pigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The surface-modified pigment of Example 1 was prepared according to the composition described in Table 1 below.

[0030] Table 1

[0031] components

Mass (grams)

1. Purified water

1000

2. Talc

100

3. Triethoxyoctylsilane

1.5

4. Amino-substituted polydimethylsiloxane

1.5

5. Ethanol

7.0

[0032]

[0033] (1) While stirring at a speed of 300 revolutions per minute (rpm), purified water was heated to 60° C., and talc was dispersed in the purified water.

[0034] (2) Dissolve triethoxyoctylsilane and amino-substituted polydimethylsiloxane completely in ethanol.

[0035] (3) While stirring the dispersion obtained in step (1) at 300 rpm, the solution obtained in step (2) was quickly added to the dispersion.

[0036] (4) The product obtained in step (3) is rapidly cooled to 35°C.

[0037] (5) The product obtained in step (4) is filtered under reduced pressure to remove water and ethanol. ...

Embodiment 2

[0041] The surface-modified pigment of Example 2 was prepared according to the composition described in Table 2 below.

[0042] Table 2

[0043] components

Mass (grams)

1. Talc

98.0

2. Triethoxyoctylsilane

1.0

3. Amino-substituted polydimethylsiloxane

1.0

4. Ethanol

8.0

[0044]

[0045] (1) Dissolve triethoxyoctylsilane and amino-substituted polydimethylsiloxane in ethanol while stirring, and spray the solution on talc in a Henschel mixer superior.

[0046] (2) Stir the mixture obtained in step (1) for 5-20 minutes.

[0047] (3) The product obtained in step (2) was dried in hot air at 120° C. for 5 hours, and ground to obtain surface-modified talcum powder.

experiment Embodiment 1

[0055] (1) Water resistance

[0056] The water resistance of the pigments obtained in Example 1, Example 2 and Comparative Examples 1-3 was evaluated by the following method.

[0057] 1 g each of the pigments of Example 1, Example 2, and Comparative Examples 1-3 were respectively added to 20 ml of water in a 100 ml beaker, followed by shaking. The suspensibility of the pigment in water was observed and evaluated. The evaluation was based on the following criteria: 5 being "very good state, wherein the pigment is not suspended in water"; 1 being "opaque state, wherein the pigment is suspended in water", and the results are shown in Table 3 below.

[0058]

[0059] 1: The aqueous phase in the beaker is opaque, in which the pigment is suspended in water. There are no unwetted pigment particles on the surface of the water.

[0060] 2: Most of the pigments are suspended in water. The amount of unwetted pigment floating on the water surface accounted for 1 / 3 of the initial pig...

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Abstract

PURPOSE: A surface-modifying pigment for cosmetic product is provided to ensure softness and affinity to the skin. CONSTITUTION: A surface-modifying pigment is obtained by surface modification of a pigment with triethoxyalkylsilane of the chemical formula 1 and amodimethicone of the chemical formula 2. The chemical formula 1 is denoted by CH3(CH2)n Si(OCH2CH3)3. In the formula 1, n is 7 to 17. In the chemical formula 2, R is OH or CH3, and X is propyl group, isopropyl group or isobutyl group. The pigment is selected from talc, sericite, mica, titanium dioxide, kaolin, silica and alumina.

Description

technical field [0001] The present invention relates to a surface-modified pigment and a cosmetic composition containing the same, more particularly, the present invention relates to a surface having excellent water resistance, spreadability, smoothness and skin affinity A modified pigment and a cosmetic composition containing the same, wherein the pigment is made of triethoxyalkylsilane represented by the following formula I and amino-substituted polydimethylsiloxane (amodimethicone) represented by the following formula II ) for surface modification: [0002] Formula I [0003] CH 3 (CH 2 ) n Si(OCH 2 CH 3 ) 3 [0004] where n is 7-17, and [0005] Formula II [0006] [0007] Among them, R is OH or CH 3 , and X is propyl, isopropyl or isobutyl. Background technique [0008] In general, since pigments used in cosmetics are poor in water resistance, cosmetics using pigments are prone to peeling off, fading, or darkening due to sweating. Therefore, it is diffi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/28C09C1/36C09C1/40C09C3/10C09C3/12A61K8/898A61K8/58A61K8/25A61K8/26A61K8/29A61Q1/02
CPCA61K8/25A61K8/891A61K2800/43A61K2800/59A61Q19/00
Inventor 申东出
Owner (주)케이에스펄
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