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Method for producing organosilicon rings by pyrolysis of waste glass glue

A technology of organosilicon ring and waste glass, applied in the direction of silicon organic compounds, etc., can solve the problems of long reaction time, large amount of alkali consumption, etc., and achieve the effect of high safety and mild reaction.

Active Publication Date: 2016-09-07
扬州宏远新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above problems, some enterprises began to use potassium hydroxide to crack and produce organosilicon rings, but this method has the disadvantages of large amount of alkali consumption and long reaction time

Method used

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  • Method for producing organosilicon rings by pyrolysis of waste glass glue

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The present invention removes the shell of the waste glass glue, puts it into the reaction kettle, adds 8% sulfonic acid of the quality of the glass glue, and 6% H of the quality of the glass glue. 2 SO 4 , Obtained by catalytic cracking under negative pressure and temperature of 300°C.

[0016] The sulfonic acid adopts concentrated sulfonic acid with a mass concentration of 90%, and the sulfuric acid adopts 95% concentrated sulfuric acid, and the detected yield is 87%.

Embodiment 2

[0018] The present invention removes the shell of the waste glass glue, puts it into the reaction kettle, adds 4% sulfonic acid of the quality of the glass glue, and 10% H of the quality of the glass glue. 2 SO 4 , Obtained by catalytic cracking under negative pressure and temperature of 270°C.

[0019] The sulfonic acid adopts concentrated sulfonic acid with a mass concentration of 85%, and the sulfuric acid adopts 92% concentrated sulfuric acid, and the detected yield is 85%.

Embodiment 3

[0021] The present invention removes the shell of the waste glass glue, puts it into the reaction kettle, adds 6% sulfonic acid of the quality of the glass glue, and 7% H of the quality of the glass glue. 2 SO 4 , Obtained by catalytic cracking under negative pressure and temperature of 310°C.

[0022] The sulfonic acid is concentrated sulfonic acid with a mass concentration greater than 85%, the sulfuric acid is 92% concentrated sulfuric acid, and the detected yield is 82%.

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Abstract

The invention relates to a method for cracking waste glass glue to produce an organosilicon ring, which is characterized in that the waste glass glue is removed from the shell, put into a reaction kettle, and 1-2% sulfonic acid and 1.5% glass glue mass are added. %‑3%H 2 SO 4 At the same time, sulfonic acid and glass glue are put together, sulfuric acid is slowly added dropwise during the reaction, and when the reaction is completed, the sulfuric acid is added dropwise, and it is obtained by catalytic cracking under negative pressure and a temperature of 270-310°C. The present invention adopts sulfonic acid and sulfuric acid as catalyst reaction, utilizes their activity to crack the silicon bond in the waste silicone rubber, and turns it into a small molecule to obtain an organosilicon ring body; the yield rate of sulfonic acid and sulfuric acid is 15% higher than that of other catalysts. %, the reaction is milder and the safety is high.

Description

technical field [0001] The invention relates to a method for producing an organosilicon ring, in particular to a method for cracking waste glass glue to produce an organosilicon ring. Background technique [0002] At present, the production process of producing dimethyl siloxane mixed rings in my country is generally to extract organosilicon monomers from crustal rocks. This process is relatively complicated and consumes a lot of energy. Nowadays, my country's economy is developing rapidly, and industries such as electronics, communications, and IT are advancing by leaps and bounds, and more and more waste silicone rubber is produced. These waste silicone rubber cannot be degraded in the natural environment, and could only be landfilled in the past. [0003] In order to solve the above problems, some enterprises began to use potassium hydroxide to crack and produce organosilicon rings, but this method has the disadvantages of large amount of alkali consumed and long reaction...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F7/21
Inventor 赵剑王明
Owner 扬州宏远新材料股份有限公司