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Emulsion-type di(2-ethylhexyl)peroxydicarbonate initiator and application thereof

A peroxydicarbonic acid and initiator technology, applied in the field of initiators, can solve the problems of complex preparation process and large dosage, and achieve the effect of rapid initiation, simple steps and stable product quality

Inactive Publication Date: 2017-06-13
鄂尔多斯市瀚博科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But existing emulsion type peroxydicarbonate (2-ethylhexyl) ester initiator has the problem that consumption is large, and preparation process is complicated

Method used

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  • Emulsion-type di(2-ethylhexyl)peroxydicarbonate initiator and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Present embodiment relates to a kind of peroxydicarbonate (2-ethylhexyl) ester initiator, is prepared by following method:

[0042] 1) 32% liquid caustic soda solution and 37% hydrogen peroxide solution are mixed and reacted to make an aqueous solution of sodium peroxide. The mass ratio of alkaline solution to hydrogen peroxide is 1:1.

[0043] 2) Add 2-ethylhexyl chloroformate dropwise to the solution obtained in step 1), stir while adding dropwise, the temperature is controlled at 23°C, add 2-ethylhexyl chloroformate within 40 minutes to 2 hours Complete, the mass ratio of 2-ethylhexyl chloroformate and the solution obtained in step one is 1:2.5.

[0044] 3) After the dropwise addition of 2-ethylhexyl chloroformate was completed, the reaction was stirred for another 80 minutes. After the reaction, the mother liquor was left standing to separate water, and then washed with water to pH 7 to obtain bis(2-ethylhexyl) peroxydicarbonate, which was loaded into barrels.

...

Embodiment 2

[0048] Present embodiment relates to a kind of peroxydicarbonate (2-ethylhexyl) ester initiator, is prepared by following method:

[0049] 1) 32% liquid caustic soda solution and 37% hydrogen peroxide solution are mixed and reacted to make an aqueous solution of sodium peroxide. The mass ratio of alkaline solution to hydrogen peroxide is 1:1.2.

[0050] 2) Add 2-ethylhexyl chloroformate dropwise to the solution obtained in step 1), stir while adding dropwise, the temperature is controlled at 25°C, add 2-ethylhexyl chloroformate within 40 minutes to 2 hours Complete, the mass ratio of 2-ethylhexyl chloroformate and the solution obtained in step one is 1:2.2.

[0051] 3) After the dropwise addition of 2-ethylhexyl chloroformate was completed, the reaction was stirred for another 80 minutes. After the reaction, the mother liquor was left standing to separate water, and then washed with water to pH 7 to obtain bis(2-ethylhexyl) peroxydicarbonate, which was loaded into barrels. ...

Embodiment 3

[0055] Present embodiment relates to a kind of peroxydicarbonate (2-ethylhexyl) ester initiator, is prepared by following method:

[0056] 1) 32% liquid caustic soda solution and 37% hydrogen peroxide solution are mixed and reacted to make an aqueous solution of sodium peroxide. The mass ratio of alkaline solution to hydrogen peroxide is 1:1.4.

[0057] 2) Add 2-ethylhexyl chloroformate dropwise to the solution obtained in step 1, stir while adding dropwise, control the temperature at 21°C, and add 2-ethylhexyl chloroformate within 40 minutes to 2 hours , the mass ratio of 2-ethylhexyl chloroformate to the solution obtained in step one is 1:2.8.

[0058] 3) After the dropwise addition of 2-ethylhexyl chloroformate was completed, the reaction was stirred for another 60 minutes. After the reaction, the mother liquor was left standing to separate the water, and then washed with water until the pH was 8 to obtain bis(2-ethylhexyl) peroxydicarbonate, which was loaded into barrels...

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Abstract

The invention relates to a preparation method for a di(2-ethylhexyl) peroxydicarbonate initiator, and an ionic emulsifier is selected to replace a conventional non-ionic emulsifier in the preparation process. The initiator prepared by the method not only has the characteristics of stable reaction and stable product quality but also has the advantages of fast initiation and uniform heat releasing compared with a traditional initiator in a PVC polymerization reaction; resins obtained in the production of the PVC resin are all in line with the excellent product range. Furthermore, compared with the traditional initiator, the initiator can omit low-alcoholysis-degree polyvinyl alcohol dispersants required in the PVC resin polymerization process, greatly reduces the production cost of the PVC resin, and does not affect the reaction time.

Description

technical field [0001] The invention relates to the technical field of initiators, in particular to an emulsion type di(2-ethylhexyl) peroxydicarbonate initiator. Background technique [0002] PVC used to be the world's largest general-purpose plastic. It is used in building materials, industrial products, daily necessities, floor leather, floor tiles, artificial leather, pipes, wires and cables, packaging films, bottles, foaming materials, sealing materials, fibers, etc. widely used. [0003] With the rapid development of the domestic PVC industry, the variety and demand of initiators for PVC production have increased rapidly. There are many production methods of PVC, such as bulk polymerization, emulsion polymerization, suspension polymerization, microsuspension polymerization, solution polymerization and so on. Emulsion type peroxydicarbonate (2-ethylhexyl) ester initiator is a kind of auxiliary agent commonly used in the method for synthesizing PVC by suspension method...

Claims

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Application Information

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IPC IPC(8): C08F4/38C08F2/20C08F114/06
Inventor 席金旭王会昌赵长森夏伟牛强
Owner 鄂尔多斯市瀚博科技有限公司