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Preparation method for tertiary butyl dimethyl chlorosilane industrialized production crystal

A technology of tert-butyldimethylchlorosilane and crystallization, which is applied in the fields of chemical instruments and methods, silicon organic compounds, organic chemistry, etc., can solve the problems of material pollution, unevenness of uniformity, and appearance of different sizes, and achieve saving Resources, simple design, and easy-to-use effects

Inactive Publication Date: 2015-03-11
河南豫辰药业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology simplifies its designs while still providing good quality products at lower costs compared to existing methods like vacuum dryers. By putting an organopolysulfone solution containing high concentrations (up to 99 wt%) into one vessel followed by evaporation overnight, it becomes clear blue crysts without any larger ones being produced due to their small sizes. These tiny crystars help make up the majority of the product's volume during manufacturing. They also allow for easy handling when filling containers.

Problems solved by technology

The technical problem addressed by this patented technology relates to improving the quality control (QC) process for producing certain chemicals called tertiary butysltrichlorosissilanes during manufacturing processes that involve reacting silicon with dichloromagnesium bromide or other reagents under specific conditions such as temperature and pressure. This results in poorly formed solidified materials which can cause damage when used without proper care due to their high solubility in water.

Method used

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Examples

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Embodiment 1

[0021] A kind of tert-butyl dimethyl chlorosilane industrial production crystal preparation method, it is made according to following weight: every 80L container contains tert-butyl dimethyl chloro silane 48kg solution.

[0022] The concentration of the tert-butyldimethylsilyl chloride solution is above 99.0%.

[0023] The tert-butyldimethylchlorosilane industrial production crystallization preparation method comprises the following steps:

[0024] Step 1: Feed: take 48kg of tert-butyldimethylsilyl chloride solution and put it into an 80L container;

[0025] Step 2: Distillation and crystallization: heat the container in step 1 above 50°C for distillation, and stir during the distillation until the crystallization is complete;

[0026] Step 3: cooling: place the crystal obtained in step 2 to cool naturally;

[0027] Step 4: Extrusion: put the cooled crystal in step 3 into an extruder for extrusion, and repeatedly extrude 20 times;

[0028] Step 5: Oscillation: Squeeze the c...

Embodiment 2

[0035] A kind of tert-butyl dimethyl chlorosilane industrial production crystal preparation method, it is made according to following weight: every 90L container contains tert-butyl dimethyl chloro silane 49kg solution.

[0036] The concentration of the tert-butyldimethylsilyl chloride solution is above 99.0%.

[0037] The tert-butyldimethylchlorosilane industrial production crystallization preparation method comprises the following steps:

[0038] Step 1: Feed: take 48kg of tert-butyldimethylsilyl chloride solution and put it into an 80L container;

[0039] Step 2: Distillation and crystallization: heat the container in step 1 above 50°C for distillation, and stir during the distillation until the crystallization is complete;

[0040] Step 3: cooling: place the crystal obtained in step 2 to cool naturally;

[0041] Step 4: Extrusion: put the cooled crystal in step 3 into an extruder for extrusion, and repeatedly extrude 20 times;

[0042] Step 5: Oscillation: Squeeze the c...

Embodiment 3

[0049] A method for preparing tert-butyldimethylchlorosilane industrial production crystallization, which is prepared according to the following weight: every 100L container contains 50kg of tert-butyldimethylchlorosilane solution.

[0050] The concentration of the tert-butyldimethylsilyl chloride solution is above 99.0%.

[0051] The tert-butyldimethylchlorosilane industrial production crystallization preparation method comprises the following steps:

[0052] Step 1: Feed: take 48kg of tert-butyldimethylsilyl chloride solution and put it into an 80L container;

[0053] Step 2: Distillation and crystallization: heat the container in step 1 above 50°C for distillation, and stir during the distillation until the crystallization is complete;

[0054] Step 3: cooling: place the crystal obtained in step 2 to cool naturally;

[0055] Step 4: Extrusion: put the cooled crystal in step 3 into an extruder for extrusion, and repeatedly extrude 20 times;

[0056] Step 5: Oscillation: S...

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Abstract

The invention relates to a preparation method for tertiary butyl dimethyl chlorosilane industrialized production crystal. The preparation method comprises the following steps: 48-52 kg of tertiary butyl dimethyl chlorosilane solution is contained in each 80-120 L container; distillation crystallization is conducted to obtain white crystal, wherein because the obtained white crystal is relatively large in particle diameter, and even the diameter of some crystal particles is larger than 100 mm, certain difficulty is caused to industrial production batch charging and subpackaging; squeezing and screening are conducted on the obtained crystal to obtain crystal of which the particle diameter is smaller than 10 mm. During industrialized production, the crystal prepared according to the preparation method can be quickly dissolved in a solvent, is convenient to use, and provides convenience for staff. Therefore, the preparation method has the advantages that the design is simple, the cost is low, and the use is convenient.

Description

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Claims

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Application Information

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Owner 河南豫辰药业股份有限公司
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