Diethylamine anion exchange resin and preparation method thereof
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A technology of exchange resin and diethylamine, which is applied in the field of anion exchange resin, can solve the problems affecting the ion exchange performance of the resin, and achieve the effect of avoiding secondary crosslinking and multiple substitutions
Inactive Publication Date: 2015-12-16
BLUESTAR CHENGDU NEW MATERIALS
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In addition, the chloromethylation reaction is accompanied by secondary crosslinking and multiple
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Embodiment 1
[0035] A diethylamine anion exchange resin, comprising the following raw materials in parts by weight:
[0036] 10 parts of macroporous styrene-divinylbenzene copolymerized microspheres
[0037] 100 parts of dichloromethane
[0038] 15 parts of anhydrous aluminum trichloride
[0039] Chloroacetyl chloride 10 parts
[0040] Chloroacetylation resin 5 parts
[0041] 50 parts of diethylamine
[0042] 50 parts of tetrahydrofuran
[0043] NaHCO 3 3 copies.
Embodiment 2
[0045] A diethylamine anion exchange resin, comprising the following raw materials in parts by weight:
[0046] 20 parts of macroporous styrene-divinylbenzene copolymerized microspheres
[0047] 120 parts of dichloromethane
[0048] 25 parts of anhydrous aluminum trichloride
[0049] Chloroacetyl chloride 20 parts
[0050] Chloroacetylated resin 9 parts
[0051] 60 parts of diethylamine
[0052] 60 parts of tetrahydrofuran
[0053] NaHCO 3 12 servings.
Embodiment 3
[0055] A diethylamine anion exchange resin, comprising the following raw materials in parts by weight:
[0056] Macroporous styrene-divinylbenzene copolymer microspheres 15 parts
[0057] 110 parts of dichloromethane
[0058] 20 parts of anhydrous aluminum trichloride
[0059] Chloroacetyl chloride 15 parts
[0060] Chloroacetylation resin 7 parts
[0061] 55 parts of diethylamine
[0062] 55 parts of tetrahydrofuran
[0063] NaHCO 3 7.5 servings.
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Abstract
The invention relates to a diethylamine anion exchange resin and a preparation method thereof, belonging to the technical field of anion exchange resins. The resin is prepared from the following raw materials in parts by weight: 10-20 parts of macroporous styrene-divinylbenzene copolymer microsphere, 100-120 parts of dichloromethane, 15-25 parts of anhydrous aluminum trichloride, 10-20 parts of chloracetyl chloride, 5-9 parts of chloracetylated resin, 50-60 parts of diethylamine, 50-60 parts of tetrahydrofuran and 3-12 parts of NaHCO3. Chloracetylation reaction is performed on crosslinked polystyrene microspheres by Friedel-Crafts reaction to introduce chloracetyl group, and amination is performed to obtain the weakly alkaline tertiary-amine anion exchange resin. The method avoids using chloromethyl ether and other carcinogenic substances, and avoids secondary crosslinking, polysubstitution and other side reactions.
Description
technical field [0001] The invention relates to an anion exchange resin and a preparation method thereof. More specifically, the invention relates to a diethylamine anion exchange resin and a preparation method thereof, belonging to the technical field of anion exchange resins. Background technique [0002] Anion exchange resins have a wide range of uses, such as industrial water treatment and separation and purification of organic drugs. However, most of the anion exchange resins currently produced in industry use styrene-divinylbenzene copolymer spheres (PS) as the skeleton, and introduce quaternary ammonium groups or other amine groups through chloromethylation and amination. [0003] On April 30, 2014, the State Intellectual Property Office disclosed an invention with the publication number CN103755846A titled "A Synthetic Method of High Temperature Resisting Strong Basic Anion Exchange Resin", which relates to the synthesis of a strong basic anion exchange resin Method...
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