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Amino-functionalized polystyrene resin as well as preparation method and application thereof

A technology of polystyrene resin and amine group, applied in the field of amine functionalized polystyrene resin and its preparation, can solve the problems of complicated preparation method, unfavorable industrial production, increase of reaction steps, etc., and achieve simple process and excellent preparation process Safety and environmental protection, highly adjustable amine content

Active Publication Date: 2021-10-22
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although many studies are still overcoming this problem by perfecting the chloromethylation process, this inevitably uses more raw materials or increases reaction steps, resulting in more complicated preparation methods and increased costs. This is not conducive to later industrial production (Chinese patent, CN101333265A, 2008-12-31; Chinese patent, CN110016091A, 2019-07-16; Chinese patent, CN105396628A, 2016-03-16)

Method used

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  • Amino-functionalized polystyrene resin as well as preparation method and application thereof
  • Amino-functionalized polystyrene resin as well as preparation method and application thereof
  • Amino-functionalized polystyrene resin as well as preparation method and application thereof

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preparation example Construction

[0055] The second aspect of the present invention is to provide the preparation method of the amino-functionalized polystyrene resin described in the first aspect of the present invention, the preparation method comprising the following steps:

[0056] Step 1. Mix the weighed N-vinylamide monomer, styrene monomer, initiator, crosslinking agent and solvent, and heat up to react;

[0057] Step 2, hydrolyzing the product obtained in step 1;

[0058] In step 3, the hydrolyzed product is washed and dried to obtain the final product.

[0059] The steps are described and illustrated in detail below.

[0060] Step 1. Mix the weighed N-vinylamide monomer, styrene monomer, initiator, crosslinking agent and solvent, and heat up to react;

[0061] In the present invention, the N-vinyl formamide monomer has a structure shown in formula (1):

[0062]

[0063] Among them, the substituent R 1 , R 3 Each is independently selected from one of hydrogen, alkyl, branched alkyl, phenyl and ...

Embodiment 1

[0099] Take 1.2g of N-vinylformamide, 0.8g of styrene, 0.03g of azobisisobutyronitrile and 8g of N,N-dimethylformamide and add them to a reactor equipped with a stirring device and a nitrogen pipe, and mix them evenly , to obtain a homogeneous mixed solution, stirred for 30 min with nitrogen, heated to 70 °C, stirred for 12 h, taken out, washed, precipitated, and centrifuged for 3 times, added 10 g of 0.1 mol / L sodium hydroxide aqueous solution, and hydrolyzed at 50 °C for 12 hours, precipitated, centrifuged, washed with water until neutral, and then freeze-dried to obtain the product.

Embodiment 2

[0101] Take 1.5g of N-vinylformamide, 0.5g of styrene, 0.03g of azobisisobutyronitrile and 2g of N,N-dimethylformamide and add them to the reactor equipped with a stirring device and a nitrogen pipe, and mix them evenly , obtain a homogeneous mixed solution, stir for 30min with nitrogen, heat up to 70°C, stir and react for 12h, take out the material, wash, precipitate, centrifuge 3 times, freeze-dry to obtain polystyrene copolymer (P(NVF-St )), its infrared spectrum see figure 1 , DSC curve see figure 2 .

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Abstract

The invention provides amido-functionalized polystyrene resin as well as a preparation method and application thereof. The amido-functionalized polystyrene resin is mainly prepared from N-vinyl amide monomers and styrene monomers through the following steps of: firstly, preparing a polystyrene copolymer containing an amido precursor from the N-vinyl amide monomers and the styrene monomers; and hydrolyzing the prepared polystyrene copolymer to obtain amido-functionalized polystyrene. The preparation method is simple and convenient to operate, green and safe, a catalyst and a chloromethylation process are not needed, and the prepared amido-functionalized polystyrene is amphiphilic, can be swelled and perforated in water and a common polystyrene solvent, can be used for preparing polystyrene anion exchange resin, and can also be used in the fields of water treatment, drug separation, catalyst loading and the like.

Description

technical field [0001] The invention belongs to the field of fine polymer products, in particular to an amine functionalized polystyrene resin and a preparation method and application thereof. Background technique [0002] The synthesis of amine-functionalized polystyrene resins has been attracting attention, not only because the amine group is a reactive group and is easily converted into other functional functional groups; but also because it is an essential intermediate for the preparation of polystyrene-type anion exchange resins . In addition, amine-functionalized polystyrene and the preparation of styrene-type anion exchange resins therefrom have been widely used in many fields such as water treatment, drug separation and catalyst loading (Chinese Patent, CN102189008A, 2011-09-21; Ateia, M. ; Alsbaiee, A.; Karanfil, T.; Dichtel, W. Environmental Science & Technology Letters 2019). [0003] Although polystyrene anion exchange resins have been industrialized, the tradi...

Claims

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Application Information

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IPC IPC(8): C08F226/02C08F212/08C08F212/12B01J41/14
CPCC08F226/02B01J41/14C08F212/08C08F212/12
Inventor 陈晓农桂起林欧阳齐张金星胡珂星
Owner BEIJING UNIV OF CHEM TECH
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