Special organic silicon resin for photocureable coating and preparation process of organic silicon resin

A technology of light-curing coatings and silicones, applied in the direction of coatings, etc., can solve problems such as environmental impact and application restrictions, and achieve the effect of good compatibility

Active Publication Date: 2014-06-25
CHANGZHOU JIANUO ORGANIC SILICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, some occasions, such as super-large components, base materials that are not resistant to high temperatures, etc., cannot be implemented, and their application will be limited. Moreover, such coatings usually contain solvents, which have adverse effects on the environment.

Method used

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  • Special organic silicon resin for photocureable coating and preparation process of organic silicon resin
  • Special organic silicon resin for photocureable coating and preparation process of organic silicon resin
  • Special organic silicon resin for photocureable coating and preparation process of organic silicon resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A. Raw materials by mass:

[0044]

[0045] B. Add the above raw materials into 180g of toluene, mix well, add the mixed solution dropwise to the mixed solution of 400g water and 200g cyclohexanone for hydrolysis, control the hydrolysis temperature at 5-7°C, and complete the dropwise addition in 5 hours to obtain organic silicon Resin prepolymer system;

[0046] C. To the silicone resin prepolymer system obtained in step B, add dropwise a mixture of 15g methyl methacrylate and 15g hydroxyethyl acrylate, set the reaction pressure to 0.15MPa, then add 1g PtCl 6 Catalyst, 180°C reaction,

[0047] Remove the solvent and low boiling matter in a vacuum, and when no low molecules come out, it means that the preparation is completed, and the temperature is lowered to obtain the special silicone resin for light-curing coatings.

[0048]Cool the silicone resin prepared through the above steps to 100°C, add vinyltoluene, and prepare a photocurable coating with a solid content...

Embodiment 2

[0061] A. Raw materials by mass:

[0062]

[0063] B. Add the above raw materials into 160g of toluene, mix well, add the mixed solution dropwise to 400g water and 200g butyl ether mixed solution for hydrolysis, control the hydrolysis temperature at 9-10°C, and complete the dropwise addition in 3 hours. The reaction is more complete. After the dropwise addition is completed, the reaction is continued for 15 minutes to obtain a silicone resin prepolymer system;

[0064] C. To the silicone resin prepolymer system obtained in step B, add dropwise a mixture of 15g methyl methacrylate and 15g fumaric anhydride, set the reaction pressure to 0.05MPa, then add 0.7g zinc acetate catalyst, 170°C reaction,

[0065] Remove the solvent and low molecules in vacuum, and when no low molecules come out, it means that the preparation is completed, and the temperature is lowered to obtain the special silicone resin for light-curing coatings.

[0066] Cool the silicone resin prepared throug...

Embodiment 3

[0079] A. Raw materials by mass:

[0080]

[0081] B. Add the above-mentioned raw materials into 200g of toluene, mix thoroughly, add the mixed solution dropwise to 400g water and 200g ethyl acetate mixed solution for hydrolysis, control the hydrolysis temperature at 7-9°C, and complete the dropwise addition in 4 hours. The reaction is more complete. After the dropwise addition is completed, the reaction is continued for 30 minutes to obtain a silicone resin prepolymer system;

[0082] C. To the silicone resin prepolymer system obtained in step B, add dropwise a mixture of 5g methyl methacrylate, 15g fumaric anhydride and 10g methacrylic acid, set the reaction pressure to 0.05MPa, then add 0.6g ring Cobalt alkanoate catalyst, reaction at 180°C,

[0083] Remove the solvent and low molecules in vacuum, and when no low molecules come out, it means that the preparation is completed, and the temperature is lowered to obtain the special silicone resin for light-curing coatings. ...

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Abstract

The invention relates to the field of a photocureable coating, and in particular relates to an organic silicon photocureable coating and a preparation method thereof. Specifically, the preparation method comprises the following steps: adding a basic organic silicon monomer, a special organic silicon monomer and a silane coupling agent to an organic solvent according to certain proportions and completely mixing, dropping mixture in water containing ethers, ketone or esters and co-hydrolyzing, and preparing an organic silicon resin prepolymer through controlling hydrolysis temperature and hydrolysis time; adding a special organic matter monomer, pressurizing and heating with presence of a catalyst, and implementing a blocking reaction and a grafting reaction; under a negative pressure condition, removing low molecules and solvent to the end of reaction in which no low molecule is removed, cooling, adding an active solvent and completely dissolving.

Description

technical field [0001] The invention relates to a resin and the field of preparation thereof, in particular to a special silicone resin for light-curing coatings and a preparation process thereof. Background technique [0002] The excellent performance of silicone resin has been widely recognized by people. With the change of synthetic resin raw material formula, many silicone resins with special properties can be synthesized. For example, some can resist high temperature and low temperature, and some can be strong and hard. , some can be strong and tough, some can withstand radiation, some can be high insulation and so on. Although the performance of silicone resin is different, it is used as a resin for coatings, and its coating curing method is relatively simple, usually using solvent-based high-temperature thermal curing. [0003] This paint curing method is traditional, easy to operate, can be sprayed, brushed, and dipped. However, the final curing molding requires a ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C08F283/12C08F220/14C08F220/28C08F222/04C08F220/06C08G77/20C09D151/08C09D7/12
Inventor胡孟进
OwnerCHANGZHOU JIANUO ORGANIC SILICON