Organic silicon prime paint composition and preparation method thereof

A technology of primer and composition, applied in the direction of coating, etc., can solve the problems of anti-vulcanization and anti-cold shock performance, etc., and achieve the effect of solving anti-vulcanization and resistance to cold and heat shock, preventing corrosion, and improving anti-vulcanization ability

Inactive Publication Date: 2021-05-07
东莞市贝特利新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The currently used silicone composition is essentially unable to meet the requirements of high resistance to vulcanization and high resistance to cold shock

Method used

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  • Organic silicon prime paint composition and preparation method thereof
  • Organic silicon prime paint composition and preparation method thereof
  • Organic silicon prime paint composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0047] Synthesis Example 1 Synthesis of silicon-containing vinyl methacrylate

[0048] In a 500ml four-neck flask equipped with a serpentine condenser and a thermometer, add 124.18g of methacryloxypropyl trimethoxysilane, 167.76g of 1,3-divinyl-1,1,3, 3-Tetramethyldisiloxane, adjusted to below 10°C in an ice bath. After cooling, 11.7 g of concentrated sulfuric acid was added and mixed for 20 minutes. After mixing, 13.5 g of water was added dropwise for hydrolysis and equilibrium reaction. After reacting for 5 hours, 4.5 g of water was added for liquid separation and deacidification, 250 g of 10% Glauber's salt water and 200 g of toluene were added, and then further purified by washing with water. The solvent was removed by concentration at 100° C. / 5 mmHg to obtain methacryloxypropyltris(dimethylvinylsiloxy)silane of the following structure.

[0049]

Synthetic example 2

[0050] Synthesis Example 2 Silicon Hydrogen-Containing Methacrylate

[0051] In a 500ml four-necked flask equipped with a serpentine condenser and a thermometer, add 124.18g of methacryloxypropyltrimethoxysilane, 120.89g of 1,1,3,3-tetramethyldisiloxane Alkanes, adjusted to below 10°C in an ice bath. After cooling, 9.8 g of concentrated sulfuric acid was added and mixed for 20 minutes. After mixing, 13.5 g of water was added dropwise for hydrolysis and equilibrium reaction. After reacting for 5 hours, 4.5 g of water was added for liquid separation and deacidification, 250 g of 10% Glauber's salt water and 200 g of toluene were added, and then further purified by washing with water. The solvent was removed by concentration at 50° C. / 5 mmHg to obtain methacryloxypropyltris(dimethylsiloxy)silane of the following structure.

[0052]

Synthetic example 3

[0053] Synthesis example 3 methacrylate polymer containing silicon vinyl and silicon hydrogen

[0054]In a four-neck flask equipped with a serpentine condenser and a thermometer, add 50 parts by mass of methyl methacrylate, 10 parts by mass of SiCH=CH obtained from Example 1 2 bonded methacrylate, 5 parts by mass of methacrylate containing silicon-hydrogen bonds obtained in Example 2, a mixed solvent of isopropanol and ethyl acetate of 350 parts by mass, 0.5 parts by mass of 2,2' -Azobisisobutyronitrile, stirred at 85°C for 5 hours, cooled to 50°C, added 0.4 parts by mass of p-hydroxyanisole to prepare a methacrylate polymer containing silicon-containing vinyl groups and silicon-hydrogen bonds The solution.

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PUM

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Abstract

The invention provides an organic silicon prime paint composition. The organic silicon prime paint composition comprises A) an acrylate polymer containing silicon vinyl and silicon-hydrogen bonds at the same time; and B) a solvent. The organic silicon prime paint composition provided by the invention forms a coating in a functional area of an LED device, and the LED device can be bonded with a sealing material composed of the addition reaction organic silicon composition for sealing the LED device. After the organic silicon prime paint composition is cured, the contact between external impurities and a silver layer can be isolated, and the vulcanization resistance is improved. The adhesion between the LED device and the sealing material composed of the addition reaction organosilicon composition for sealing the LED device is improved, and corrosion of the metal electrode formed on the substrate is prevented. Meanwhile, the performance requirements on vulcanization resistance and cold and hot impact resistance are met.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to an organic silicon primer composition. Background technique [0002] In the field of LED packaging backlight devices, the market has extremely high requirements for the thermal shock resistance and vulcanization resistance of LED devices. There is a need for a silicone composition for encapsulation that can simultaneously take into account the two properties. [0003] The currently used organosilicon composition essentially cannot meet the requirements of high resistance to vulcanization and high resistance to cold impact at the same time. Contents of the invention [0004] In view of this, the technical problem to be solved by the present invention is to provide a silicone primer composition which, after being cured in combination with the silicone composition for encapsulation, has properties of anti-sulfurization and thermal shock resistance. [0005] To achieve ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/12C08F220/14C08F230/08
CPCC08F220/14C09D143/04C08F230/08
Inventor 刘圣兵侯海鹏汤胜山刘伟峰
Owner 东莞市贝特利新材料有限公司
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