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Organic silicon elastomer as well as synthesis method and application thereof

A synthetic method and elastomer technology, applied in the direction of medical preparations containing active ingredients, pharmaceutical formulas, and cosmetic preparations, etc., can solve the problems of high preparation cost and low product conversion rate, and achieve low cost and high reaction conversion rate. High, the effect of improving spreadability

Active Publication Date: 2021-08-06
广东赛安特新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing methods for synthesizing SEG have defects such as high preparation cost and low product conversion rate.

Method used

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  • Organic silicon elastomer as well as synthesis method and application thereof
  • Organic silicon elastomer as well as synthesis method and application thereof
  • Organic silicon elastomer as well as synthesis method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A kind of synthetic method of silicone elastomer, the steps are as follows:

[0043] (1) chloroplatinic acid is dissolved in ethanol, and the mass ratio of chloroplatinic acid and ethanol is 1:60, obtains chloroplatinic acid solution;

[0044] (2) Add hydrogen-containing silicone oil A and hydroxyl-terminated dimethylmethylvinyl (siloxane and polysiloxane) into the reactor, hydrogen-containing silicone oil A and hydroxyl-terminated dimethylmethylvinyl ( The molar ratio of siloxane to polysiloxane) is 1.7, and the ultrasonic dispersion is uniform, and then the chloroplatinic acid solution obtained in step (1) is added, and the addition amount of chloroplatinic acid is hydrogen-containing silicone oil A and hydroxyl-terminated dimethyl 0.05% of the total mass of methyl vinyl (siloxane and polysiloxane), reacted with magnetic stirring at 100°C for 2h;

[0045] (3) Add D5 to the reaction system in step (2), the amount of D5 added is 80% of the mass of the reaction system, ...

Embodiment 2

[0046] Example 2: The only difference from Example 1 is that the hydroxyl-terminated dimethyl vinyl (siloxane and polysiloxane) is replaced with methylphenyl hydroxy silicone oil, and the rest are synthesized according to Example 1. elastomer.

Embodiment 3

[0047] Example 3: The only difference from Example 1 is that the molar ratio of hydrogen-containing silicone oil A to hydroxyl-terminated dimethylmethylvinyl (siloxane and polysiloxane) is 1.6, and the rest are synthesized according to Example 1 Silicone elastomer.

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Abstract

The invention discloses a synthetic method of an organic silicon elastomer, which comprises the following steps: (1) dissolving a catalyst in an organic solvent to obtain a catalyst solution; (2) adding hydrogen-containing silicone oil and hydroxyl silicone oil into a reactor, ultrasonically dispersing uniformly, then adding the catalyst solution obtained in the step (1), and reacting at 60-120 DEG C for 1-5 hours; and (3) adding a diluent into the reaction system in the step (2), and shearing and dispersing uniformly to obtain the organic silicon elastomer. The synthesis method disclosed by the invention has the advantages of high reaction conversion rate, low cost and the like, and the synthesized organic silicon elastomer is gel-like, has the characteristic of shear thinning, is easy to add into cosmetics, can play a role in thickening, improves the spreading property of the cosmetics, can also improve the skin feeling of the cosmetics in use, and enables the cosmetics to be dry, smooth, non-greasy and quick to absorb. In addition, the organic silicon elastomer also has excellent film-forming property, and can assist in strengthening moisturizing and skin care effects.

Description

technical field [0001] The invention belongs to the technical field of silicone elastomers for daily use, and in particular relates to a silicone elastomer and its synthesis method and application. Background technique [0002] Silicone elastomer (SE) is a kind of silicone compound, which is mainly composed of linear polydimethylsiloxane containing functional groups, and has a three-dimensional network structure obtained through different reaction mechanisms with crosslinking agents. The cross-linked polymer is widely used in medical, daily chemical and other industries. [0003] According to different properties, SE is mainly divided into: silicone resin microspheres, silicone resin emulsion, silicone elastomer gel (SEG). Among them, SEG is a pseudoplastic fluid with the property of shear thinning, which makes its application in various formulations very convenient. It can be used as an effective rheological thickener for low molecular weight siloxane fluids, and it can be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/44A61K8/98A61Q19/00
CPCA61K8/981A61K2800/48A61Q19/00C08G77/44
Inventor 凌文志黄武萍
Owner 广东赛安特新材料有限公司
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