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A kind of strongly basic styrene-based anion exchange resin and preparation method thereof

A styrene-based and exchange resin technology is applied in the field of polymer chemistry to achieve the effects of reducing production costs, solving safety and environmental protection problems, good development prospects and practical significance

Active Publication Date: 2017-08-25
SHANGHAI RESIN FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above-mentioned technical problems in the prior art, the invention provides a kind of strongly basic styrenic anion exchange resin and its preparation method, described this strong basic styrenic anion exchange resin and its preparation method have solved Environmental safety issues caused by the use of carcinogenic chloromethyl methyl ether in the preparation process of anion exchange resins in the prior art

Method used

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  • A kind of strongly basic styrene-based anion exchange resin and preparation method thereof
  • A kind of strongly basic styrene-based anion exchange resin and preparation method thereof
  • A kind of strongly basic styrene-based anion exchange resin and preparation method thereof

Examples

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Embodiment 1

[0087] A kind of strongly basic anion exchange resin, calculated by weight fraction, its raw material composition and content are as follows:

[0088] 38 parts of isoamyl alcohol

[0089] 6 parts paraformaldehyde

[0090] Thionyl chloride 51 parts

[0091] Cross-linked polystyrene resin 10 parts

[0092] 28 parts of tin tetrachloride

[0093] 87 parts of dichloromethane

[0094] Trimethylamine 20 parts

[0095] 13 parts deionized water

[0096] Sodium chloride 0.6 parts

[0097] Dioxane 36 parts

[0098] Described cross-linked polystyrene degree of cross-linking is 7%;

[0099] Described trimethylamine is the trimethylamine aqueous solution that massfraction is 33%;

[0100] The preparation method of above-mentioned a kind of strongly basic anion exchange resin specifically comprises the steps:

[0101] (1) Chloromethylation of cross-linked polystyrene

[0102] Add 38 parts of isoamyl alcohol, 6 parts of paraformaldehyde, and 55 parts of methylene chloride into the ...

Embodiment 2

[0109] A kind of strongly basic anion exchange resin, calculated by weight fraction, its raw material composition and content are as follows:

[0110] 19 parts of isoamyl alcohol

[0111] 6 parts paraformaldehyde

[0112] Thionyl chloride 38 parts

[0113] 9 parts cross-linked polystyrene resin

[0114] 22 parts of tin tetrachloride

[0115] Trimethylamine 27 parts

[0116] 59 parts of dichloromethane

[0117] 8 parts deionized water

[0118] Sodium chloride 0.6 parts

[0119] Dioxane 24 parts

[0120] Described cross-linked polystyrene degree of cross-linking is 7%;

[0121] Described trimethylamine is the trimethylamine ethanol solution that massfraction is 33%;

[0122] The preparation method of above-mentioned a kind of strongly basic anion exchange resin specifically comprises the steps:

[0123] (1) Chloromethylation of cross-linked polystyrene

[0124] Add 19 parts of isoamyl alcohol, 6 parts of paraformaldehyde, and 27 parts of dichloromethane into the react...

Embodiment 3

[0130] A kind of strongly basic anion exchange resin, calculated by weight fraction, its raw material composition and content are as follows:

[0131] 19 parts of isoamyl alcohol

[0132] 6 parts paraformaldehyde

[0133] Thionyl chloride 63 parts

[0134] 11 parts of cross-linked polystyrene resin

[0135] 30 parts of tin tetrachloride

[0136] 55 parts of dichloromethane

[0137] Trimethylamine 22 parts

[0138] 14 parts of deionized water

[0139] Sodium chloride 0.8 parts

[0140] Dioxane 60 parts

[0141] Described cross-linked polystyrene degree of cross-linking is 7%;

[0142] Described trimethylamine is the trimethylamine aqueous solution that massfraction is 33%;

[0143] The preparation method of above-mentioned a kind of strongly basic anion exchange resin specifically comprises the steps:

[0144] (1) Chloromethylation of cross-linked polystyrene

[0145] Add 19 parts of isoamyl alcohol, 6 parts of paraformaldehyde, and 23 parts of methylene chloride int...

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Abstract

A kind of strongly basic styrene-based anion exchange resin of the present invention, its formula is calculated according to weight part, by 19~40 parts of isoamyl alcohol, 6~10 parts of paraformaldehyde, 38~63 parts of thionyl chloride, 9~11 parts Cross-linked polystyrene resin, 16-30 parts of tin tetrachloride, 55-87 parts of dichloromethane, 20-35 parts of trimethylamine, 8-15 parts of deionized water, 0.4-0.8 parts of sodium chloride, 24-60 parts Parts of dioxane composition. The present invention also provides a preparation method for the above-mentioned strongly basic styrene-based anion exchange resin, using isoamyl alcohol, paraformaldehyde, and thionyl chloride as basic raw materials to synthesize isopentyl chloromethyl ether for crosslinking Chloromethylation of polystyrene to obtain chloromethylated cross-linked polystyrene, and chloromethylation of cross-linked polystyrene to obtain light yellow transparent strong basic anion exchange resin through amination. The invention solves the problems of environmental pollution and production safety in the traditional process of chloromethylation.

Description

technical field [0001] The invention relates to the field of polymer chemistry, and relates to an anion exchange resin, in particular to a strongly basic styrene anion exchange resin and a preparation method thereof. Background technique [0002] Anion exchange resin is a polymer functional material that can selectively permeate anions, and is one of the important materials for industrial separation and purification. On the one hand, as an ion exchange material, it has many applications in wastewater treatment, chemical medicine, food manufacturing, etc. On the other hand, as a functional material, it has also been more and more widely used in the fields of catalysis, energy, and metal smelting. [0003] The anion exchange resin is prepared from styrene-divinylbenzene crosslinked polymer through chloromethylation and then amination. At present, chloromethyl ether is widely used as a chloromethylation reagent in the industry. Due to its strong carcinogenicity and low boilin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F12/08C08F8/32C08F8/24
Inventor 吴蓁夏菲郭青张英强
Owner SHANGHAI RESIN FACTORY