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Synthesizing method and application of phenyl ring

A technology of phenyl ring body and synthesis method, applied in the field of organic compound synthesis, can solve the problems of low refractive index, unstable storage, easy precipitation of white particles, etc., and achieve the effects of narrow molecular weight distribution, stable product storage and good repeatability

Inactive Publication Date: 2016-06-15
旭川新材料(广东)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although phenyl hydrolyzate is a transparent liquid, it is unstable in storage, and the phenyl silicone oil made from it is also unstable in storage, and white particles are easy to precipitate
The intermediates and finished products have relatively wide molecular weights, poor repeatability, and low refractive index, so only phenyl silicone oils with relatively small molecular weights can be produced.

Method used

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  • Synthesizing method and application of phenyl ring
  • Synthesizing method and application of phenyl ring
  • Synthesizing method and application of phenyl ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Add diphenyldihydroxysiloxane into a four-necked flask, add isopropanol, and heat up.

[0029] 2. As the temperature rises, diphenyldihydroxysiloxane gradually dissolves, and when the material becomes completely colorless and transparent, keep the temperature.

[0030] 3. Add the catalyst dropwise at constant temperature for 20 minutes. After the dropwise addition, continue the reaction at constant temperature for 6 hours.

[0031] 4. Cool down to below 30°C, filter with a Buchner funnel, collect the insoluble phase, pour into alcohol or water, wash 3 times with water, and wash 2 times with alcohol.

[0032] 5. Put the washed white powder into a vacuum drying oven and dry it at a temperature of about 80-100°C until the solid content reaches 99.5%.

[0033] 6. Add 5% tetramethyldivinyl disiloxane by weight of pure phenyl ring body (ie, the phenyl ring body intermediate multiplied by the solid content, the same below), and synthesize phenyl silicone oil by anionic pol...

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Abstract

The invention relates to a synthesizing method of a phenyl ring.The synthesizing method is characterized in that condensation polymerization is performed on diphenylsilanediol under a strong base condition to form a mixture mainly formed by an octatomic ring, a hexatomic ring and an octatomic ring are easily generated when the condensation polymerization is performed on siloxane, but the phenyl ring mainly formed by the octatomic ring, namely octamethylcyclotetrasiloxane is synthesized through the condensation polymerization due to the steric effect of phenyl and the control of the process and catalyst.During the synthesizing process of phenyl silicone oil, compared with traditional phenyl hydrolysate, the phenyl ring has the advantages that the phenyl ring is high in refractive index, narrow in molecular weight distribution, stable in storage, good in repeatability, capable of producing high-molecular-weight phenyl high-temperature glue, and the like.

Description

technical field [0001] The invention relates to the field of organic synthesis, in particular to a synthesis method of a phenyl ring body. Background technique [0002] With the development of science and technology, phenyl silicone oil is widely used in aerospace, electronic appliances, petrochemicals, building materials, automobiles and ships, industrial prevention and control, etc., for insulation and lubrication, damping and shock resistance, high and low temperature resistance, aging resistance, and radiation resistance Wait. The phenyl ring body is used as an intermediate, and the synthesis of phenyl silicone oil is a new method for the synthesis of phenyl silicone oil, which is of great significance to the synthesis and development of phenyl silicone oil. [0003] The intermediates of synthetic phenyl silicone oil include phenyl ring body and phenyl hydrolyzate. Phenyl rings are white particles, soluble in isopropanol at high temperature, and the molecular distribut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/04C08G77/06C08G77/20C07F7/08
CPCC07F7/0838C07F7/0874C08G77/04C08G77/06C08G77/20
Inventor 曹锋李晓涛熊富华伍中平杨建群
Owner 旭川新材料(广东)股份有限公司
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