Preparation method of intermediate-polarity macroporous adsorption resin

Inactive Publication Date: 2011-09-21
周家付
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] However, the purity of the extract obtained by the traditional AB-8 resin extraction and separation method is low, an

Method used

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  • Preparation method of intermediate-polarity macroporous adsorption resin

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Embodiment 1

[0018] Take 10 grams of styrene, 15 grams of hydroxyethyl acrylate, 75 grams of divinylbenzene with a weight percentage of 80%, 133.3 grams of toluene, 66.6 grams of octanol, and 1 gram of benzoyl peroxide, and mix them uniformly to obtain an oil phase. Take 500ml of deionized water, add 2 grams of polyvinyl alcohol, 5 grams of gelatin, and 100 grams of sodium chloride, stir to dissolve, and obtain an aqueous phase. Take 200 grams of the previously prepared oil phase and put it into the water phase, turn on the agitator at a speed of 60 rpm, and when the diameter of the oil beads is 1.2mm, start to slowly heat up, and react at a constant temperature for 2 hours at 78°C, with a heating rate of 0.5°C / min; continue to react at constant temperature for 2 hours after the beads are finalized. Then raise the temperature to 88°C at the same heating rate, and then react at a constant temperature for 6 hours; then raise the temperature to 95°C at the same heating rate, react at a consta...

experiment example 2

[0021] Take 40 grams of styrene, 10 grams of hydroxyethyl acrylate, 50 grams of divinylbenzene with a weight percentage of 80%, 150 grams of toluene, 150 grams of octanol, and 1 gram of benzoyl peroxide, and mix them uniformly to obtain an oil phase. Get 500ml deionized water, add 2 grams of polyvinyl alcohol, 5 grams of gelatin, 100 grams of sodium chloride, stir and dissolve, and obtain the aqueous phase. Take 200 grams of the previously prepared oil phase and put it into the water phase, turn on the agitator at a speed of 60 rpm, and when the diameter of the oil beads is 1.2mm, start to slowly heat up, and react at a constant temperature for 2 hours at 78°C, with a heating rate of 0.5°C / min; continue to react at constant temperature for 2 hours after the beads are finalized. Then raise the temperature to 88°C at the same heating rate, and then react at a constant temperature for 6 hours; then raise the temperature to 95°C at the same heating rate, react at a constant temper...

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Abstract

The invention discloses a preparation method of intermediate-polarity macroporous adsorption resin, which comprises the following steps of: mixing 1-50 parts of styrene, 2-10 parts of hydroxyethyl acrylate and 50-100 parts of 80 percent divinylbenzene according to weight percentage as monomers, taking methylbenzene accounting for 50-200 percent of the total weight of monomers and carbon alcohol accounting for 33-135 percent of the total weight of monomers as mixed pore-foaming agents and taking benzoyl peroxide accounting for 0.1-2 percent of the total weight of monomers and azodiisobutyronitrile accounting for 0.1-2 percent of the total weight of monomers as initiators to obtain an oil phase; dissolving 0.2-1 part of polyvinyl alcohol, 0.5-1 part of gelatin and 5-10 parts of sodium chloride according to weight ratio into 100 parts of deionized water to obtain a water phase; feeding the oil phase into the water phase, rising temperature, reacting, filtering and extracting with acetone, and leaching with alcohol until a wash solution is clear; and obtaining macroporous cation resin.

Description

technical field [0001] The invention relates to a preparation method of a medium-polarity macroporous adsorption resin. Used in chemical industry. Background technique [0002] As sweet polysaccharides gradually replace traditional chemically synthesized sweeteners and are gradually used in various grades of food and beverages, the sweet polysaccharide market is expanding year by year, and the demand for higher purity sweet polysaccharides is increasing. [0003] At present, the extraction and separation method of sweet polysaccharides produced in China is generally adopted by the extraction and separation method of macroporous adsorption resin, and the process is relatively mature. [0004] However, the purity of the extract obtained by the traditional AB-8 resin extraction and separation method is low, and the cost of further purification is high, which affects the competitiveness of domestic sweet polysaccharides in the market. Therefore, there is an urgent need to deve...

Claims

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Application Information

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IPC IPC(8): C08F212/36C08F212/08C08F220/28C08J9/28B01J20/26B01J20/30B01J20/28
Inventor 周家付
Owner 周家付
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