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Daily-chemical organic-silicon elastomer powder and preparation method and application thereof

A technology of silicone and elastomer, which is applied in the field of silicone elastomer powder for daily use and its preparation, can solve the problem of greasy formula, achieve good performance, overcome the effect of strong greasy feeling, good smoothness and powdery texture

Inactive Publication Date: 2018-05-08
GUANGZHOU TINCI MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, since the elastomer gel contains a large amount of low-molecular-weight silicone oil, when used, the small-molecular-weight silicone oil will be brought into the formula, giving the formula a greasy feeling, which is unacceptable for some powdery formula products

Method used

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  • Daily-chemical organic-silicon elastomer powder and preparation method and application thereof
  • Daily-chemical organic-silicon elastomer powder and preparation method and application thereof
  • Daily-chemical organic-silicon elastomer powder and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Into a 1000mL four-neck round bottom flask equipped with mechanical stirring and condensing and reflux devices, 20g of hydrogen-containing polysiloxane with a H content of 0.05wt.% and a viscosity of 100cSt, and 37.9g ​​of α, ω-divinyl-terminated polysiloxane were successively added. Siloxane (m=100, M n =7586) (the molar ratio of C=C and Si-H bond is 1:1 in two kinds of materials), 3.0g polyoxyethylene-30 dipolyhydroxystearate (the amount of dispersing agent is 1wt.%) and 243.6g ethanol (the amount of solvent is 80wt.%), turn on the mechanical stirring and heat up to 70°C, add the calculated amount of vinyl platinum complex catalyst, so that the metal platinum concentration in the system is 3.0ppm, and react at this temperature for 5h After the reaction, cool down to room temperature, filter under reduced pressure using a Buchner funnel, collect the filter cake into an open beaker, and remove the residual solvent in a vacuum drying oven at 50°C with a vacuum degree >-0...

Embodiment 2

[0029] Into a 1000mL four-neck round bottom flask equipped with mechanical stirring and condensing and reflux devices, 40g of hydrogen-containing polysiloxane with a H content of 0.1wt.% and a viscosity of 100cSt, and 93.4g of α, ω-divinyl-terminated polysiloxane were successively added. Siloxane (m=50, M n =3886) (the molar ratio of C=C and Si-H bond is 1.2:1 in two kinds of materials), 2.7g polyoxyethylene-30 dipolyhydroxystearate (the amount of dispersing agent is 1wt.%) and 136.1g n-propanol (the amount of solvent is 50wt.%), open mechanical stirring and be warming up to 80 ℃, add the vinyl platinum complex catalyst of calculated amount, make the metal platinum concentration in the system be 4.0ppm, at this temperature React for 5 hours, cool to room temperature after the reaction, use a Buchner funnel to filter under reduced pressure, collect the filter cake into an open beaker, and remove the residual solvent in a vacuum oven at 50°C with a vacuum degree >-0.095MPa to ob...

Embodiment 3

[0031] In a 1000mL four-necked round-bottomed flask equipped with mechanical stirring and condensing reflux devices, 20g of hydrogen-containing polysiloxane with a H content of 0.2wt.% and a viscosity of 300cSt, 93.3g of α, ω-divinyl-terminated poly Siloxane (m=50, M n =3886) (the molar ratio of C=C and Si-H bond is 1.2:1 in two kinds of materials), 12.6g polyoxyethylene-30 dipolyhydroxystearate (the amount of dispersing agent is 2wt.%) and 478.4g isopropanol (the amount of solvent is 80wt.%), open mechanical stirring and be warmed up to 80 ℃, add the vinyl platinum complex catalyst of calculated amount, make the metal platinum concentration in the system be 2.0ppm, at this temperature React for 6 hours, cool to room temperature after the reaction, use a Buchner funnel to filter under reduced pressure, collect the filter cake into an open beaker, and remove the residual solvent in a vacuum oven at 50°C and vacuum >-0.095MPa to obtain a white powder, which is Silicone elastome...

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Abstract

The invention belongs to the field of organic silicon materials, and discloses daily-chemical organic-silicon elastomer powder and a preparation method and application thereof. The preparation methodof the daily-chemical organic-silicon elastomer powder comprises the steps of: mixing hydrogen-containing polysiloxane, divinyl-terminated unsaturated compounds, dispersant and alcoholic solvents evenly, then raising the temperature to 50-100 DEG C, then adding a platinum catalyst, performing thermal insulation for a reaction for 0.5-10 hours, then reducing the temperature to room temperature, performing filtration, and removing residual solvents from an obtained filter cake in an vacuum drying oven at a temperature of 50-100 DEG C and a degree of vacuum larger than -0.095 MPa to obtain the organic-silicon elastomer powder. According to the daily-chemical organic-silicon elastomer powder and the preparation method and application thereof, formation of powder from the cross-linked polymerization product is promoted through the addition of the dispersant, and therefore the powder precipitates from the solvents, so that filtration and separation of the product are achieved; meanwhile, since the morphology of the cross-linked polymerization product is influenced to a certain extent, the obtained product has no agglomeration, and the powder is uniform; therefore, the organic-silicon elastomer powder can have better application performance and better smoothness and powdery texture in formula application.

Description

technical field [0001] The invention belongs to the field of organosilicon materials, and in particular relates to an organosilicon elastomer powder for daily use and its preparation method and application. Background technique [0002] In the daily chemical industry, silicone elastomers are generally transparent to translucent gels, so they are also called silicone elastomer gels. It is generally prepared by dispersing cross-linked large molecular weight organic silica gel powder into a small molecule carrier fluid. Oxygen or α, ω diolefins are produced by reaction, such as: invention patent CN 106633076A reports the preparation of silicone gel with phenyl in the structure from hydrogen-containing silicone oil and divinyl silicone oil containing phenyl in the main chain; invention patent CN 102512339B reports organohydrogensiloxane and unsaturated compounds, and prepares organosilicon gel under platinum catalyst. The commonly used small molecule carrier fluid is low visco...

Claims

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Application Information

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IPC IPC(8): C08G77/44A61K8/89A61Q19/00
CPCA61K8/89A61K2800/10A61Q19/00C08G77/44
Inventor 吴伟霍梦月柳晨醒户献雷张宇
Owner GUANGZHOU TINCI MATERIALS TECH
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