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Multiple functional group silicide preparation method

A polyol compound and compound technology, applied in the direction of silicon organic compounds, can solve the problems of less hydrolyzable function, poor mechanical properties, and low mechanical strength of condensation-type room temperature vulcanized silicone rubber, so as to improve the mechanical strength and mechanical properties, and produce The effect of no pollution in the process and high product yield

Inactive Publication Date: 2009-06-10
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since most of the existing crosslinking agents are small molecules containing only one silicon atom, which contain less hydrolyzable functional groups, the mechanical strength and mechanical properties of condensation type RTV silicone rubber are low.

Method used

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  • Multiple functional group silicide preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1. In the four-necked flask equipped with a magnetic stirrer, reflux condenser, constant pressure dropping funnel, thermometer and gas guiding device, put N2 gas protection, add 100mL of anhydrous toluene, 10mL of SiCl 4 , after mixing evenly, heat to reflux. Add a mixed solution of 10 mL of anhydrous toluene and 1.26 g of pyroglucinol dropwise to the bottle for at least 2 hours. After the dropwise addition was completed, continue heating to reflux for 2 hours. Atmospheric pressure to remove excess SiCl 4 After cooling to below 4°C, add 20 mL of absolute ethanol dropwise to the bottle. After the dropwise addition, it was heated to reflux for 4 hours. After distilling off excess ethanol, 5.0 g of 1,3,5-tris(triethoxysiloxy)benzene was obtained. Yield: 81.7%.

Embodiment 2

[0031] Example 2. As shown in 1, the excess SiCl is evaporated at atmospheric pressure 4 After cooling to below 4°C, add 20 mL of acetic acid dropwise to the bottle. After the dropwise addition, heat to reflux for 3 hours. After distilling off the excess acetic acid, 5.6 g of 1,3,5-tris(triacetoxysiloxy)benzene were obtained. Yield: 85.5%.

[0032] Application example: 100 parts of 107 glue (parts by mass, the same below), D 4 Process SiO 2 20 parts, 3.5 parts of 1,3,5-tris(triacetoxysiloxy)benzene, and 0.01 part of dibutyltin dilaurate were mixed evenly, and left to surface dry at room temperature for 1 hour.

Embodiment 3

[0033] Example 3. In the four-necked flask equipped with a magnetic stirrer, reflux condenser, constant pressure dropping funnel, thermometer and gas guiding device, put N2 gas protection, add 100mL of anhydrous toluene, 10mL of MeSiCl 3 , after mixing evenly, heat to reflux. Add a mixed solution of 10 mL of anhydrous toluene and 1.26 g of pyroglucinol dropwise to the bottle for at least 2 hours. After the dropwise addition was completed, continue heating to reflux for 2 hours. Atmospheric pressure to remove excess MeSiCl 3 After cooling to below 4°C, add 20 mL of acetone oxime dropwise into the bottle. After the dropwise addition, it was heated to reflux for 5 hours. After distilling off the excess acetoxime, 5.6 g of 1,3,5-tris(diacetoneximomethylsilyloxy)benzene were obtained. Yield: 82.0%.

[0034] Application example: 100 parts of 107 glue (parts by mass, the same below), D 4 Process SiO 2 20 parts, 3.5 parts of 1,3,5-tris(diacetoneximomethylsilyloxy)benzene, and...

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Abstract

The invention relates to a process for preparing multifunctional silicides by using polyhydroxy compounds, chloro-silicane and compounds containing functional groups as the raw material through condensation reaction in organic solvent, the obtained silicides have a general formula of Z(OSiRnY3-n)m.

Description

technical field [0001] The invention relates to the field of organic chemistry, in particular to a method for preparing a polyfunctional silicon compound, which is hydrolyzable and is especially suitable for use as a crosslinking agent for room temperature vulcanized silicone rubber. Background technique [0002] Liquid silicone rubber uses low-viscosity polysiloxane as the base polymer, and can be formed into an elastomer by contacting with moisture or mixing with a crosslinking agent at room temperature or with a little heating. Liquid silicone rubber is divided into two types according to its product form: single-package (single-component) and double-package (two-component), and according to its cross-linking mechanism, it can be divided into two types: condensation type and addition type. Condensed products can be vulcanized into elastomers at room temperature, so they are also called room temperature vulcanized silicone rubber (abbreviated as RTV rubber). Liquid silico...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F7/02
Inventor 李美江来国桥蒋剑雄邱化玉潘庆华
Owner HANGZHOU NORMAL UNIVERSITY
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