Porous composite micro balls for cosmetics and preparation method for porous composite micro balls

A technology of porous composite microspheres and cosmetics, applied in the direction of cosmetic preparations, cosmetics, cosmetics, etc., can solve the problems of high toxicity of raw materials and environmental protection, and achieve the effect of low price, simple preparation method, and good amphiphilicity

Inactive Publication Date: 2012-09-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This preparation method needs to use toluene for extraction, if a non-polar solvent is used, it needs to use carbon tetrachloride, tetrahydrofuran or dichloromethane, and the raw materials used are highly toxic and not environmentally friendly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) In the first step, add 0.32g of initiator azobisisobutyronitrile into 31.85g of styrene monomer and 3.185g of butyl acrylate monomer to dissolve, take 63g of ethanol as a solvent, and adopt dispersion polymerization at 70°C The copolymerization reaction was initiated by the method to obtain polymer microspheres, which were washed successively with methanol, ethanol and deionized water, suction-filtered at room temperature, dried at 50°C for 24 hours under the condition of vacuum degree of -0.1MPa to obtain polymer microspheres, and set aside;

[0027] (2) In the second step, add 5 g of the polymer microspheres prepared in step (1) and 50 g of concentrated sulfuric acid into the reactor, and after stirring and reacting at 30° C. for 10 h, dilute with deionized water until the pH of the solution is in the range of 6 to 6.9 (As long as the solution is close to neutral, roughly measured with pH test paper, and compared with the pH test paper with naked eyes), centrifuge ...

Embodiment 2

[0031] (1) In the first step, add 1.274g of initiator azobisisobutyronitrile into 31.85g of styrene monomer and 0.32g of acrylic acid monomer to dissolve, take 70g of ethanol as a solvent, and initiate it by suspension polymerization at 75°C Copolymerization reaction to obtain polymer microspheres, washed with methanol, ethanol and deionized water in sequence, suction filtration at room temperature, drying at 50°C for 10 hours under vacuum condition of -0.1MPa to obtain polymer microspheres, set aside;

[0032] (2) In the second step, add 9 g of polymer microspheres prepared in step (1) and 60 g of concentrated sulfuric acid into the reactor, and after stirring and reacting at 50° C. for 7 hours, dilute with deionized water until the pH of the solution is in the range of 6 to 6.9 Centrifuge at 5000r / min for 30min, wash with ethanol and deionized water several times, filter at room temperature, and dry at 50°C for 12h under a vacuum of -0.1MPa to obtain amphiphilic sulfonated mi...

Embodiment 3

[0037] (1) In the first step, add 0.42g of initiator benzoyl peroxide into 21.045g of styrene monomer and 3.76g of methyl methacrylate monomer to dissolve, take 70g of ethanol as a solvent, and use a dispersion method at 65°C The polymerization method initiates a copolymerization reaction to obtain polymer microspheres, which are washed sequentially with methanol, ethanol and deionized water, suction filtered at room temperature, and dried at 50°C for 20 hours under a vacuum of -0.1MPa to obtain polymer microspheres for later use;

[0038] (2) In the second step, add 7 g of polymer microspheres prepared in step (1) and 40 g of concentrated sulfuric acid into the reactor, and after stirring and reacting at 60° C. for 4 hours, dilute with deionized water until the pH of the solution is between 6 and 6.9 Centrifuge at 5000r / min for 30min, wash with ethanol and deionized water several times, filter at room temperature, and dry at 50°C for 15h under a vacuum of -0.1MPa to obtain amp...

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Abstract

The invention discloses porous composite micro balls for cosmetics and a preparation method for the porous composite micro balls. According to the method, the porous micro balls are modified by a chemical method, and the porous micro balls have high amphipathicity and can be applied to water-based and oily cosmetic systems well, and the application range of the porous micro balls in the field of the cosmetics is widened. The method comprises the following steps of: adding the prepared porous polymer micro balls, deionized water and ethanol in a mass ratio into a reactor, and dissolving ester compounds or a metal saline solution in the ethanol, dripping into the reactor, stirring for 2 to 8 hours for centrifugal separation, washing, performing suction filtration at room temperature, and performing vacuum drying to obtain the porous composite micro balls, wherein the ester compounds are tetraethoxysilane or butyl titanate; and the metal saline solution is zinc nitrate, zinc acetate, aluminum nitrate, aluminum isopropoxide, aluminum ethylate or aluminum sec-butoxide. Porous structures of the prepared composite micro balls are in an empty cage shape, and the porous structures can be regulated and controlled by changing the process, so that the requirements of different release effects of the cosmetics are met.

Description

technical field [0001] The invention relates to a porous polymer microsphere, in particular to a porous composite microsphere for cosmetics and a preparation method thereof. The porous composite microsphere has a good adsorption effect on cosmetic active ingredients, is hydrophilic and lipophilic, and can Functions require the compounding of different inorganic particles. technical background [0002] The porous polymer system is a porous network and a porous spherical polymer composed of a polymer material. Due to the strong adaptability, simple preparation method and wide source of materials, the porous polymer system has attracted widespread attention. application prospects. [0003] As a functional polymer material with a special surface morphology, the porous polymer microsphere system is widely used in the field of cosmetics. It uses its large specific surface area and porous structure to change the addition and release of active substances to enhance The purpose of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F220/14C08F220/18C08F220/06C08F8/32C08J9/32A61K8/81A61K8/02A61Q17/04A61Q1/00
Inventor 程江覃秋菊皮丕辉李志英龚盛昭徐守萍文秀芳蔡智奇杨卓如
Owner SOUTH CHINA UNIV OF TECH
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