Uniform-hole amine resin and preparation and application method thereof

An amine-based resin and application method technology, applied in chemical instruments and methods, other chemical processes, alkali metal oxides/hydroxides, etc., can solve the problems of difficulty in resin regeneration, difficult elution of pigments, and reduced recovery rate, etc. To achieve the effect of being suitable for large-scale industrial application, friendly process environment, and low production cost

Inactive Publication Date: 2010-09-15
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, macroporous ion exchange resins also show obvious limitations during use. For example, the high cross-linked skeleton of the resin will make it difficult to carry out the functional group reaction, and the content of functional groups is lower than that of ion exchange resins, resulting in a decrease in the decolorization capacity of the resin. , more importantly, due to the uneven distribution of pores in the macroporous resin, some of the larger pores in the resin will trap macromolecular polysaccharides, reducing the recovery rate, while the smaller pores will hinder the diffusion of pigments. The decolorization efficiency is reduced, and the pigment is difficult to elute, and the resin regeneration is difficult

Method used

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  • Uniform-hole amine resin and preparation and application method thereof
  • Uniform-hole amine resin and preparation and application method thereof
  • Uniform-hole amine resin and preparation and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The synthetic method of novel homoporous amine-based resin:

[0029]At room temperature, dissolve 5.0 g of polyvinyl alcohol (PVA) in 500 g of water in a 1000 ml three-necked bottle, and heat to 40°C. Mix 50g of divinylbenzene, 25g of chloromethylated styrene, 75g of toluene, and 0.75g of BPO to form an oil phase. Add the oil phase to the water phase, start stirring and raise the temperature to 76°C at a rate of 0.5°C / min, keep it warm for 3 hours, then continue to heat up to 85°C for 10 hours, stop the reaction, filter to obtain transparent spherical solid particles, and It is washed with a large amount of deionized water and dried in vacuum to obtain chloromethylated polystyrene resin.

[0030] In a 1000ml three-necked bottle, fully swell 71.4g of dry chloromethylated polystyrene resin with 500g of dichloroethane, add 30g of 1,2-ethylenediamine, start stirring, after mixing evenly, heat up to 45°C and keep warm Stop the reaction after 6 hours, filter out the resin, ...

Embodiment 2

[0032] The synthetic method of novel homoporous amine-based resin:

[0033] At room temperature, dissolve 3.0 g of polyvinyl alcohol (PVA) in 450 g of water in a 1000 ml three-necked bottle, and heat to 42°C. Mix 40g of divinylbenzene, 35g of chloromethylated styrene, 100g of toluene, and 1.0g of BPO to form an oil phase. Add the oil phase to the water phase, start stirring and raise the temperature to 75°C at a rate of 0.5°C / min, keep it warm for 2 hours, then continue to heat up to 87°C and react for 8 hours, stop the reaction, filter, and obtain transparent spherical solid particles. It is washed with a large amount of deionized water and dried in vacuum to obtain chloromethylated polystyrene resin.

[0034] In a 1000ml three-necked bottle, fully swell 72.8g of dry chloromethylated polystyrene resin with 400g of dichloroethane, add 40g of 1,3-propylenediamine, start stirring, after mixing evenly, heat up to 48°C and keep warm Stop the reaction after 8 hours, filter out th...

Embodiment 3

[0036] The synthetic method of novel homoporous amine-based resin:

[0037] At normal temperature, dissolve 15g of polyvinyl alcohol (PVA) in 1000g of water in a 2000ml three-necked bottle, and heat to 45°C. Mix 100g of divinylbenzene, 50g of chloromethylated styrene, 100g of toluene, and 2.0g of BPO to form an oil phase. Add the oil phase to the water phase, start stirring and raise the temperature to 78°C at a rate of 0.5°C / min, keep it warm for 2 hours, then continue to heat up to 89°C for 6 hours, stop the reaction, filter to obtain transparent spherical solid particles, and It is washed with a large amount of deionized water and dried in vacuum to obtain chloromethylated polystyrene resin.

[0038] In a 2000ml three-necked bottle, fully swell 142.7g of dry chloromethylated polystyrene resin with 800g of dichloroethane, add 100g of 1,4-butanediamine, start stirring, after mixing evenly, heat up to 48°C and keep warm Stop the reaction after 10 hours, filter out the resin,...

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Abstract

The invention discloses a uniform-hole amine resin and a preparation method and an application method thereof, belongs to the technical fields of decoloring resin synthesis of a novel hole structure, active ingredient separation and purification of a natural plant and the like, and in particular relates to a decoloring resin. The appearance characteristic and hole structure parameters of the uniform-hole amine resin are that the resin is spherical, faint yellow and semi-transparent; the grain diameter of the resin is 0.3 to 0.7mm; and the water content of the resin is 50 to 60 percent. The invention also discloses the preparation method and the application method for the uniform-hole amine resin. In the preparation of the uniform-hole amine resin, a non-good solvent serving as a porogen is not needed in the process of synthesizing the traditional macroporous resin; and a creative double-functional-group functional reagent and a polystyrene resin undergo a secondary crosslinking chemical reaction to generate a uniform-hole mesh structure, which has the structure characteristics of high crosslinking degree and high functional group content. For the decolouring application in plant polysaccharide, the decolouring rate of pigment in a plurality of plant polysaccharide extracts is over 95 percent and the recovery rate of the polysaccharide is over 90 percent only by one operation step, namely, adsorption; and the preparation method has the advantages of environmental-friendly process, low production cost, simple and convenient operation, high decolouring efficiency and suitability for large-scale industrial application.

Description

【Technical field】 [0001] The invention relates to the technical fields of synthesis of decolorizing resin with novel pore structure, separation and purification of active ingredients of natural plants, and in particular to a class of decolorizing resin with uniform pore diameter. 【Background technique】 [0002] Polysaccharide is formed by condensation and dehydration of multiple monosaccharide molecules, and its general formula is (C 6 h 12 o 6 ) x . Studies in recent years have found that plant polysaccharides have various pharmacological and physiological activities. For example, the research results of Gong Xiaojian et al. have shown that artificial cordyceps polysaccharides can enhance cellular immunity and humoral immunity (Gong Xiaojian, The effect of artificial grass polysaccharides on the immunity of mice , Journal of China Pharmaceutical University [J], 2000, 31 (1): 53-55); Shi Xuekui et al. showed that safflower polysaccharide has obvious anti-tumor activity i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C08J3/24C08F212/36C08F212/14C08K5/17C08B37/00
Inventor 王春红施荣富王洋
Owner NANKAI UNIV
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