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Water soluble high efficient terminator for polyvinyl chloride polymerization system and applications thereof

A polyvinyl chloride and terminator technology, applied in the field of water-soluble high-efficiency terminators, can solve the problems of slow termination rate and fluctuation of resin quality, and achieve the effect of fast response, low cost and rapid termination reaction

Active Publication Date: 2018-10-02
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

Bisphenol A is a prohibited ingredient in the European Union, which restricts the application of the former in the PVC industry. Hydroxylamines are restricted due to their slow termination rate and low boiling point, which easily enter the recycling monomer system and cause resin quality fluctuations.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A water-soluble high-efficiency terminator for polyvinyl chloride polymerization system in this embodiment is composed of the following components by mass percentage: 15% acetone thiosemicarbazone, 12% sodium perchlorate, 3% fatty acid sodium, EDTA·2Na 5%, monopentaerythritol 3%, epoxidized soybean oil 2%, sodium hydroxide 5%, methanol 15%, deionized water 40%.

[0020] The preparation method of the terminator is as follows: add a certain amount of deionized water, add the formulated amount of pH regulator, and stir until completely dissolved; add the formulated amount of chain terminator, stir until completely dissolved; add the formulated amount of solubilizer, and stir for 15 minutes ; Add the heat stabilizer in the formula amount, stir until it is completely dissolved, make up the water in the formula amount, stir for 30 minutes, pump it out and pack it in a 200L blue plastic bucket, and store it in a cool and ventilated place.

[0021] The specific process of apply...

Embodiment 2

[0023] A water-soluble high-efficiency terminator for the polyvinyl chloride polymerization system of this embodiment is composed of the following components by mass percentage: 12% acetone thiosemicarbazone, 12% sodium perchlorate, 3% sodium fatty acid, EDTA·2Na 5%, monopentaerythritol 3%, epoxidized soybean oil 2%, sodium hydroxide 5%, methanol 15%, deionized water 43%.

[0024] The preparation method of the terminator and the specific process of applying it to the suspension polymerization of polyvinyl chloride to terminate the reaction: the same as in Example 1.

Embodiment 3

[0026] A water-soluble high-efficiency terminator for the polyvinyl chloride polymerization system of this embodiment is composed of the following components by mass percentage: 15% acetone thiosemicarbazone, 15% sodium perchlorate, 5% fatty acid potassium, EDTA·2Na 5%, monopentaerythritol 3%, epoxidized soybean oil 2%, sodium hydroxide 5%, methanol 15%, deionized water 35%.

[0027] The preparation method of the terminator and the specific process of applying it to the suspension polymerization of polyvinyl chloride to terminate the reaction: the same as in Example 1.

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PUM

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Abstract

The invention provides a water soluble high efficient terminator for a polyvinyl chloride polymerization system and applications thereof. The terminator is composed of following components in percentage by weight: 10 to 20% of chain terminator, 10 to 30% of heat stabilizer, 10 to 30% of solubilizer, 3 to 10% of pH adjuster, and the balance being deionized water. The provided terminator can rapidlystop polymerization reactions, is capable of improving the stability of PVC resin, has high stability, and will not enter a monomer recovery system to influence the quality of produced PVC resin, atthe same time, the using amount of the terminator is little, the reactions are quick, during the storage process, the terminator is stable, and the cost is low.

Description

technical field [0001] The invention relates to the field of polyvinyl chloride resin synthesis, in particular to a water-soluble high-efficiency terminator used in a polyvinyl chloride polymerization system and its application. Background technique [0002] As one of the three major synthetic resins in the world, polyvinyl chloride has the advantages of superior performance, strong versatility, and low price, and is widely used in the world. At present, the domestic production of polyvinyl chloride is more than 24 million tons, most of which are produced by calcium carbide suspension polymerization. The whole production process includes three major stages of polymerization, stripping and drying. Vinyl chloride monomer is used as raw material, deionized water is used as water phase medium, dispersant, initiator, terminator, anti-sticking agent, buffer, defoaming agent Agents and vapor phase inhibitors are the main additives. The terminator is an important part of terminati...

Claims

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Application Information

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IPC IPC(8): C08F14/06C08F2/42C08F2/38C08F2/18
CPCC08F14/06C08F2/42C08F2/18
Inventor 赵长森王会昌苏浩王鑫龙夏伟牛强
Owner 鄂尔多斯市瀚博科技有限公司
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