Acrylic decolorization resin and preparation method thereof

Abstract

The invention relates to the field of polymer chemistry, in particular to a novel acrylic decolorization resin and a preparation method thereof. The preparation method comprises the following steps: by taking a polyvinyl monomer as a cross-linking agent, carrying out suspension polymerization on a vinylpyridine monomer and an aliphatic unsaturated ester monomer in the presence of a pore forming agent to obtain white balls; carrying out aminolysis reaction on the obtained white balls and polyethylene polyamine to introduce amine groups; and reacting the obtained amine balls with a monomer containing an alcoholic hydroxyl group under an alkaline condition to obtain the acrylic ion exchange decolorization resin. The resin has the properties of a strong-base resin and a weak-base resin containing pyridine groups at the same time; and compared with the commercially available common strong or weak-base ion exchange resin, the obtained target product in the invention has the advantages of high functional group content, strong decolorization capability, good contamination resistance, long service life, greater social benefit and economic benefit and the like during the decolorization process.

Description

technical field [0001] The invention relates to the field of polymer chemistry, in particular to a decolorizing resin and a preparation method thereof, in particular to a novel double-functional acrylic decolorizing resin and a preparation method thereof. Background technique [0002] As we all know, pigment is an organic compound that has color itself and can color other substances. All colored substances are related to their chemical structure. The molecular structure of colored substances generally contains two groups of chromophore and auxochrome . The chromogenic groups and auxochromic groups in various pigments generally contain a large number of various polar groups (such as -COOH, -NH 2 , -OH, etc.), in addition to activated carbon decolorization in industrial production, special decolorization resins with high decolorization ability and reusability have gradually replaced activated carbon and played an important role in various fields. Decolorization resins are ge...

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Problems solved by technology

[0008] In order to solve the many shortcomings of the above decolorizing resins, the inventors of the present invention introduced pyridine groups into the polyacrylate skeleton resin, and this resin was introduced into the alcoholic hydroxyl group after polyvinyl polyamine amination, and obtained simultaneously containing tertiary amines and polyacrylate resins. The new ion-exchange decolorization resin of quaternary amines not only ensures the decolorization ability of the resin, but also improves the anti-pollution ability of the decolorization resin, solves the defect of D280’s poor anti-pollution ability, and can also adjust the vinylpyridine monomer used in the synthesis of white balls. The type and dosage and the type of polyethylene polyamine in the aminolysis can be used to adjust the content of quaternary ammonium and tertiary ammonium in the resin, so as to be suitable for the decolorization of different substances

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