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Method for preparing no-solvent green styrene-series cation exchange resin

A cation exchange and styrene-based technology, which is applied in the field of preparation of green styrene-based cation-exchange resins, can solve health hazards and other problems, achieve the effects of reducing pollution, not easy to break, and increasing skeleton elasticity

Active Publication Date: 2018-06-01
江苏国创新材料研究中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of this invention is on the basis of prior art, to provide a kind of preparation method of solventless green styrenic cation exchange resin, can solve the dichloroethane widely used during sulfonation reaction in the current cation exchange resin production process Problems that will cause certain harm to the environment and human health

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Add 250g of deionized water, 4g of anhydrous sodium sulfate, and 0.5g of polyvinyl alcohol into a three-necked flask to configure water phase A, then add 100g of styrene, 6g of divinylbenzene, 1g of initiator, and three The oil phase A prepared with 0.5 g of methylolpropane tris(3-mercaptopropionate) was stirred, heated up to polymerize, and then kept at a temperature of 4 hours, and a white ball was washed and dried. Add 120g of deionized water, 1.5g of anhydrous sodium sulfate, and 0.2g of polyvinyl alcohol into the three-necked flask to configure the water phase B, add a polywhite ball, heat up to 32°C and stir, then add 25g of styrene, divinylbenzene 1 g, 0.2 g of trimethylolpropane tris(3-mercaptopropionate) is configured as oil phase B, which is swelled for two hours, and the water phase is separated. Finally, add water phase C prepared by 300g deionized water and 0.5g polyvinyl alcohol, gradually heat up, keep warm for 8 hours after polymerization, and separate t...

Embodiment 2

[0053] Add 250g of deionized water, 4g of anhydrous sodium sulfate, and 0.5g of polyvinyl alcohol into a three-necked flask to configure water phase A, then add 100g of styrene, 6.8g of divinylbenzene, 1g of initiator, and two The oil phase A prepared with 0.8 g of ethylene glycol methacrylate was stirred, heated up to polymerize, and then kept warm for 4 hours, and a poly white ball was washed and dried. Add 120g of deionized water, 1.5g of anhydrous sodium sulfate, and 0.2g of polyvinyl alcohol into the three-necked flask to configure the water phase B, add a polywhite ball and raise the temperature to 32°C and stir, then add 25g of styrene and 2g of divinylbenzene , 0.5 g of ethylene glycol dimethacrylate was configured as oil phase B, which was swelled for two hours, and the water phase was separated. Finally, add water phase C prepared by 300g deionized water and 0.5g polyvinyl alcohol, gradually heat up, keep warm for 8 hours after polymerization, and separate the water ...

Embodiment 3

[0057] Add 250g of deionized water, 4g of anhydrous sodium sulfate, and 0.5g of polyvinyl alcohol into a three-necked flask to configure water phase A, and then add 100g of styrene, 7g of divinylbenzene, 1g of initiator, and ethylene glycol to the water phase. The oil phase A prepared with 1 g of alcohol diethyl diallyl ester was stirred, heated up to polymerize, and then kept warm for 4 hours, and a poly white ball was washed and dried. Add 120g of deionized water, 1.5g of anhydrous sodium sulfate, and 0.2g of polyvinyl alcohol into the three-necked flask to configure the water phase B, add a polywhite ball and raise the temperature to 32°C to stir, then add 25g of styrene, 1.2g of divinylbenzene g, 0.5 g of ethylene glycol diethyl diallyl ester is configured as oil phase B, which is swollen for two hours, and the water phase is separated. Finally, add water phase C prepared by 300g deionized water and 0.5g polyvinyl alcohol, gradually heat up, keep warm for 8 hours after pol...

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PUM

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Abstract

The invention relates to a method for preparing no-solvent green styrene-series cation exchange resin and belongs to the field of preparation of cation exchange resin. A crosslinking agent is adoptedto improve the elasticity and the pressure resistance of a styrene resin framework; a secondary polymerization method is adopted to increase the strength of the frameworl; high-concentration sulfuricacid is adopted to quicken a reaction and to improve the efficiency; and a multi-gradient concentration step-by-step acid nesting method to reduce intense heat release of sulfuric acid during cleaning. Disadvantages of a process which adopts dichloroethane as a swelling agent for a synthetic reaction are avoided, resin with the same performance and indexes as ion exchange ion which is prepared bynot taking dichloroethane as the swelling agent, and owing to frequent use of a water phase, environmental pollution of the water phase can be reduced. Resin prepared by the method is a dichloroethane-residue-free green product, and can be more deeply applied to industries including drinking water, food, medicines and the like.

Description

technical field [0001] The invention belongs to the field of cation exchange resin preparation, and in particular relates to a preparation method of a solvent-free green styrene-based cation exchange resin. Background technique [0002] Styrene resin is the resin with the largest output in the world at present. Because of its stable physical and chemical properties and long service life, it has always attracted people's attention. At present, it is widely used in electricity, food, medicine and health, petrochemical, electronic , Metallurgy and environmental protection and other fields have had a huge impact on the development of electric power, chemical industry, pharmaceutical and military industries. Among them, cation exchange resin is mainly used for water softening, removal of toxic and harmful heavy metal ions, separation and purification of food and pharmaceutical industries, etc. [0003] With the development of social economy, various industries put forward strict...

Claims

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Application Information

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IPC IPC(8): C08F257/02C08F212/08C08F212/36C08F8/36B01J39/19
CPCB01J39/19C08F8/36C08F212/08C08F257/02C08F212/36
Inventor 周伟伟刘莉莉李正斌王亚东颜秉迅郭鹏彭春杰
Owner 江苏国创新材料研究中心有限公司
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