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A kind of amino resin and its preparation method and application

A technology of amino resin and divinyl benzene, applied in the field of amino resin and its preparation, can solve the problems of low specific surface area of ​​highly cross-linked polystyrene resin, and achieve the effects of good adsorption, high functional group content and uniform distribution

Active Publication Date: 2019-07-05
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the specific surface area of ​​highly cross-linked polystyrene resin obtained by existing methods is generally low

Method used

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Examples

Experimental program
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preparation example Construction

[0029] The invention provides a preparation method of amino resin, comprising the following steps:

[0030] Dissolve polyvinyl alcohol and chloride in water to obtain an aqueous phase;

[0031] Mixing chloromethylated styrene, divinylbenzene and an initiator to obtain an oil phase;

[0032] Copolymerizing the water phase and the oil phase to obtain an initial copolymer;

[0033] Swelling the initial copolymer and polyethylene polyamine in a solvent to obtain a swollen system;

[0034] The swollen system is thermally polymerized to obtain an amino resin.

[0035] In the present invention, polyvinyl alcohol and chloride salt are dissolved in water to obtain an aqueous phase. The present invention does not have any special limitation on the sources of the polyvinyl alcohol and the chloride salt, and the polyvinyl alcohol and the chloride salt well-known to those skilled in the art can be used, and the specific example is the commercially available polyvinyl alcohol and the chl...

Embodiment 1

[0053] Dissolve polyvinyl alcohol and sodium chloride in water to prepare 450 mL of an aqueous solution with a concentration of polyvinyl alcohol of 0.5 wt% and a concentration of sodium chloride of 5.0 wt%, and heat it in a 1L three-necked flask to 40°C in a water bath to obtain an aqueous phase.

[0054] With 79g of chloromethylated styrene and 1g of divinylbenzene as polymerization monomers and 0.8g of azobisisocyanonitrile as an initiator, fully mix the above polymerization monomers and initiators as a suspension polymerization reaction The oil phase was added to the water phase. Start stirring, adjust the size of the oil drop to 0.3-1 mm, slowly raise the temperature to 68°C and react for 4 hours. After the reaction is completed, filter, wash, and dry to obtain the DVB-VBC initial copolymer.

[0055] Take 5g of the above-mentioned DVB-VBC initial copolymer and place it in a 500mL three-necked flask, add 40mL of toluene solution dissolved with 2g of diethylenetriamine, ful...

Embodiment 2

[0060] Dissolve polyvinyl alcohol and potassium chloride in water to prepare 450 mL of an aqueous solution with a concentration of polyvinyl alcohol of 0.6 wt% and a concentration of potassium chloride of 4.0 wt%, and heat it in a 1L three-necked flask to 40°C in a water bath to obtain an aqueous phase.

[0061] Using 78g of chloromethylated styrene and 2g of divinylbenzene as polymerization monomers and 0.8g of azobisisocyanonitrile as an initiator, fully mix the above polymerization monomers and initiators as a suspension polymerization reaction The oil phase was added to the water phase. Start stirring, adjust the size of the oil drop to 0.3-1 mm, slowly raise the temperature to 68°C and react for 4 hours. After the reaction is completed, filter, wash, and dry to obtain the DVB-VBC initial copolymer.

[0062] Take 5g of the above-mentioned DVB-VBC initial copolymer and place it in a 500mL three-necked flask, add 40mL of toluene solution dissolved with 2g of diethylenetriami...

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Abstract

The invention provides amino resin as well as a preparation method and application thereof. According to the preparation method, a functionalization reaction and a post-crosslinking reaction of resin are combined together by using polyethylene polyamine as a functionalization reagent of chloromethylated styrene resin, and anion exchange resin which has high specific surface area and high functional group content can be synthesized by using a one-step method. The amino resin prepared by the method has a spherical appearance and is orange; the particle size of the amino resin is 0.5-0.8mm, the specific surface area of the amino resin is 280-410m<2> / g, the dry resin moisture content of the amino resin is 54.3-57.3%, the amino exchange capacity of the amino resin is 4.3-11.2mmol / g, the average pore size of the amino resin is 17.2-25.2nm, and the porosity of the amino resin is 53.2-60.7%. Furthermore, the amino resin provided by the invention also can well adsorb bilirubin and has a bilirubin removal rate reaching up to 90% or above, thus being capable of being used for preparing medicines for preventing and treating hyperbilirubinemia.

Description

technical field [0001] The invention relates to the technical field of amino resins, in particular to an amino resin and a preparation method and application thereof. Background technique [0002] Highly cross-linked polystyrene resins have been widely used due to their excellent adsorption properties. However, in the 1970s, Davankov et al. used linear polystyrene and low cross-linked polystyrene to obtain ultra-high cross-linked polystyrene resins by Friedel-Crafts post-crosslinking reaction, and there were no special functional groups. The adsorption to the adsorbate also relies solely on hydrophobic interactions and π-π interactions. [0003] With the diversification of technical requirements, functionalization of highly cross-linked polystyrene resins with high specific surface area has gradually appeared. The functionalized high specific surface adsorption resin can be prepared by chemically modifying the resin matrix before and after post-crosslinking, or directly us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F212/14C08F212/36C08F8/32A61K31/785A61P1/16
CPCA61K31/785C08F8/32C08F212/14C08F212/36
Inventor 王春红王晨彪
Owner NANKAI UNIV
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