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A kind of polyether modified organosilicon with crosslinking structure and preparation method thereof

A technology of polyether modification and cross-linking structure, which is applied in the field of cross-linking structure polyether modified silicone and its preparation, which can solve the complex preparation process of organo-modified polysiloxane, unfavorable large-scale industrial production, environmental pollution, etc. problems, to achieve the effect of flexible and convenient preparation method, convenient preparation and excellent performance

Active Publication Date: 2022-03-29
湖北隆胜四海新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, a large amount of organic solvent needs to be added during the reaction, and after the reaction is completed, a post-treatment step is required to remove the solvent, which makes the preparation process of organically modified polysiloxane complicated, high in cost, and pollutes the environment, which is not conducive to large-scale industrial production

Method used

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  • A kind of polyether modified organosilicon with crosslinking structure and preparation method thereof
  • A kind of polyether modified organosilicon with crosslinking structure and preparation method thereof

Examples

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Embodiment 1

[0019] Example 1. A method for preparing a polyether-modified organosilicon with a cross-linked structure. The polyhydroxysilanol-containing prepolymer obtained by hydrolysis of methyltriethoxy under the action of a catalyst (hydrochloric acid): 90g, propylene glycol polyoxypropylene Ether PPG100O (molecular weight 1000): 80g; viscosity is 80000mPa. s 107 glue: 25g; put it into a 500ml four-neck flask, stir and heat up to 80 degrees Celsius, put in 0.1g of dibutyltin dilaurate as a catalyst, continue to reduce pressure and heat up and stir to 145 degrees Celsius, until the material gradually changes from turbid to colorless and transparent, And when there is no new water to produce in the negative pressure collection bottle, the temperature will be lowered.

Embodiment 2

[0020] Example 2. A method for preparing a polyether-modified organosilicon with a crosslinked structure. The polyhydroxysilanol-containing prepolymer obtained by hydrolysis of methyltriethoxy under the action of a catalyst (hydrochloric acid): 90g, propylene glycol polyoxypropylene Ether PPG100O (molecular weight 1000): 40g; GPE-3000 (glycerol polyoxypropylene polyoxyethylene ether): 40g; viscosity 20000mPa. s 107 glue: 25g; put it into a 500ml four-neck flask, stir and heat up to 80 degrees Celsius, put in 0.1g of dibutyltin dilaurate as a catalyst, continue to reduce pressure and heat up and stir to 145 degrees Celsius, until the material gradually changes from turbid to colorless and transparent, And when there is no new water to produce in the negative pressure collection bottle, the temperature will be lowered.

Embodiment 3

[0021] Example 3. A method for preparing a polyether-modified organosilicon with a crosslinked structure. The polyhydroxysilanol-containing prepolymer obtained by hydrolysis of methyltriethoxy under the action of a catalyst (hydrochloric acid): 90g, propylene glycol polyoxypropylene Ether PPG200O (molecular weight 2000): 10g; GPE-3000 (glycerin polyoxypropylene polyoxyethylene ether): 40g; viscosity is 80000mPa. s 107 glue: 25g; put it into a 500ml four-necked flask, stir and heat up to 80 degrees Celsius, put in 0.05g of dibutyltin dilaurate and 0.05g of butyl titanate as catalysts, continue to depressurize and heat up to 145 degrees Celsius, until the material turns from turbid When it gradually becomes colorless and transparent, and no new water is produced in the negative pressure collection bottle, it can be obtained by cooling down.

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Abstract

The invention discloses a polyether-modified organosilicon with a cross-linked structure and a preparation method thereof, which comprises the following raw materials, which are recorded by weight percentage: polyhydric silanol-containing prepolymer: 5% to 50%; polyether polyol: 5% ~50%; 107 glue: 0~50%; catalyst: 001%~5%. The preparation method of the present invention is flexible and convenient, and the product structure can be adjusted according to needs. The structure of the polyether-modified silicone prepared by the method is a space network structure, which has strong emulsifying ability, convenient preparation, excellent performance, and can emulsify high-viscosity silicone. Grease, making release agent, defoamer, lubricant.

Description

technical field [0001] The invention relates to the field of modified silicone, in particular to a cross-linked polyether modified silicone and a preparation method thereof. Background technique [0002] Polyether modified silicone is a kind of modified silicone leveling agent, release agent, defoamer and lubricant. It is used in the field of coating film, which can significantly reduce the surface tension of the coating and improve the coating's adhesion to the substrate. Wettability, thereby reducing defects such as orange peel, blooming, shrinkage cavity, pinhole and Bernard swirl on the surface of the coating film, improving the apparent quality of the coating film, reducing the surface friction of the coating film, and improving the scratch resistance of the coating film performance. [0003] In the prior art, the hydrogen-containing silicone oil of the methyl part is first prepared by the mixed siloxane equilibrium method, and then toluene or isopropanol, which accoun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/46C08G77/08
CPCC08G77/46C08G77/08
Inventor 杨伟王薛成田坤耿学辉杨帆杨开柱
Owner 湖北隆胜四海新材料有限公司
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