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Organosilicon elastomer based on vinyl MQ silicone resin, and preparation method thereof

A technology of MQ silicone resin and vinyl, which is applied in the field of silicone materials to achieve the effect of improving greasy feeling, improving compatibility performance and enhancing powdery texture

Inactive Publication Date: 2018-02-23
GUANGZHOU TINCI MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there is seldom at present the report that MQ silicone resin is used for the preparation of silicone elastomer gel for daily use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In a 1000mL four-neck round bottom flask, add 100.0g of hydrogen-containing polysiloxane with a hydrogen content of 0.05% and a viscosity of 50.0cSt at 25°C, 60.0g of a vinyl content of 0.5%, and a number average molecular weight of 3000, M / Vinyl MQ silicone resin with Q of 1.2, both C=C / Si-H=1.2 / 1, then add 373.3g of decamethylcyclopentasiloxane (D 5 , the viscosity at 25°C is about 2.8cSt), the content of the carrier fluid is 70%, turn on the mechanical stirring, heat up to 80°C, add the calculated amount of isopropanol solution of chloroplatinic acid, so that the content of metal platinum in the system is 3ppm, and in The reaction was continued at this temperature for 8.0 hours, and then the gel obtained by the reaction was subjected to the action of a three-roll mill to obtain a translucent gel-like compound, which was silicone elastomer polymer 1 .

Embodiment 2

[0029] In a 1000mL four-neck round bottom flask, add 100.0g of hydrogen-containing polysiloxane with a hydrogen content of 0.1% and a viscosity of 50.0 cSt at 25°C, 33.3g of a vinyl content of 0.3%, and a number average molecular weight of 3000, M / Q is vinyl MQ silicone resin of 1.2, both C=C / Si-H=1 / 1, then add 533.2g decamethylcyclopentasiloxane (D 5 , the viscosity at 25°C is about 2.8cSt), the carrier fluid content is 80%, turn on the mechanical stirring, heat up to 80°C, add the calculated amount of isopropanol solution of chloroplatinic acid, so that the content of metal platinum in the system is 3.0ppm, and The reaction was continued at this temperature for 8.0 hours, and then the gel obtained by the reaction was subjected to the action of a three-roll mill to obtain a translucent gel-like compound, which was silicone elastomer polymer 2.

Embodiment 3

[0031] In a 1000mL four-neck round bottom flask, add 100.0g of hydrogen-containing polysiloxane with a hydrogen content of 0.1% and a viscosity of 300.0cSt at 25°C, 36.6g of a vinyl content of 0.3%, and a number average molecular weight of 3000, M / Vinyl MQ silicone resin with Q of 1.2, both C=C / Si-H=1.1 / 1, then add 533.2g of decamethylcyclopentasiloxane (D 5 , the viscosity at 25°C is about 2.8cSt), the content of the carrier fluid is 80%, turn on the mechanical stirring, heat up to 50°C, add the calculated amount of vinyl complex platinum catalyst, so that the content of metal platinum in the system is 20.0 ppm, and in The reaction was continued at this temperature for 8.0 hours, and then the gel obtained by the reaction was subjected to the action of a three-roll mill to obtain a translucent gel-like compound, which was silicone elastomer polymer 3.

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PUM

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Abstract

The invention belongs to the field of organosilicon material, and discloses an organosilicon elastomer based on vinyl MQ silicone resin, and a preparation method thereof. The preparation method comprises following steps: hydrogen-containing polysiloxane, vinyl MQ silicone resin, and a carrier fluid are stirred to be uniform, an obtained mixture is heated to 50 to 100 DEG C, a platinum catalyst isadded, the temperature is maintained for 0.5 to 10.0h of reaction, an obtained product is subjected to high speed shearing so as to obtain the organosilicon elastomer based on vinyl MQ silicone resin.According to the preparation method, the organosilicon elastomer based on vinyl MQ silicone resin is obtained via hydrosilation addition reaction of hydrogen-containing polysiloxane and vinyl MQ silicone resin, and direct crosslinking reaction with the carrier fluid. Compared with elastomer with conventional structures, the organosilicon elastomer possesses following advantages: the oily feel ofconventional elastomer gel is avoided, product powder texture is improved, formula compatibility performance is improved, and the organosilicon elastomer is capable of smoothing skin without causing oily feel.

Description

technical field [0001] The invention belongs to the field of silicone materials, in particular to a silicone elastomer based on vinyl MQ silicone resin and a preparation method thereof. Background technique [0002] Silicone elastomer materials have the advantages of high and low temperature resistance, weather resistance, ozone resistance, high air permeability and physiological inertness. In the daily chemical industry, silicone elastomers generally present transparent to translucent gels, so they are also called organic silicone elastomers. Silicone elastomer gel. Thanks to its unique cross-network structure, silicone elastomers have a certain degree of resilience when an external force is applied. When applied to the skin, the changes in its microstructure make people feel soft and comfortable, with a velvety silky feeling . Therefore, silicone elastomer gel is favored by cosmetic engineers and is often added to high-end cosmetics. [0003] Silicone elastomer gel is g...

Claims

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Application Information

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IPC IPC(8): C08G77/44
CPCC08G77/44C08G77/70
Inventor 吴伟霍梦月柳晨醒户献雷张宇
Owner GUANGZHOU TINCI MATERIALS TECH