Pyridyl modified composite function super high crosslinked adsorptive resin and its preparing method

A composite function and ultra-high cross-linking technology, which is applied in chemical instruments and methods, other chemical processes, etc., can solve the problems such as the preparation method of pyridyl-modified composite function ultra-high cross-linking adsorption resin, and achieve thermal stability The effect of improving and enhancing the temperature resistance and expanding the scope of application

Inactive Publication Date: 2006-11-08
NANJING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Literature search shows that there is no report on the pyridyl-modified composite functional

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  • Pyridyl modified composite function super high crosslinked adsorptive resin and its preparing method
  • Pyridyl modified composite function super high crosslinked adsorptive resin and its preparing method
  • Pyridyl modified composite function super high crosslinked adsorptive resin and its preparing method

Examples

Experimental program
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Effect test

Embodiment 1

[0022] 1. Suspension polymerization.

[0023] Add a certain amount of dilute sodium hydroxide solution to the styrene monomer or directly filter the monomer through a resin column equipped with a strong base anion exchange resin to remove the polymerization inhibitor.

[0024] In a 1000mL beaker, add 210g styrene, 26g divinylbenzene, and 140g liquid paraffin, stir well and set aside.

[0025] In a 1000mL three-neck flask, add 600g of distilled water and raise the temperature to 40°C, then add 6g of gelatin, stir until completely dissolved, and at the same time raise the temperature to 50°C, add 2mL of methylene blue, stir well, add the above-mentioned styrene, divinylbenzene and liquid Add the initiator benzoyl peroxide 4.0g to the wax mixture; adjust the stirring speed to make the oil droplet size appropriate, gradually raise the temperature to 80°C at a speed of 1°C / 6min, keep it warm for 4 hours, and then gradually raise the temperature to 85°C Keep warm for 3 hours, keep ...

Embodiment 2

[0038] The synthetic steps of another embodiment of the present invention are as follows:

[0039] A) Using styrene as monomer, divinylbenzene as crosslinking agent, liquid wax as porogen, magnesium carbonate as dispersant, benzoyl peroxide as initiator, and suspension polymerization Linked macroporous polystyrene-divinylbenzene copolymer, steam distillation or extraction with ethanol as solvent to remove the residual porogen in the resin channels, and then air-dried to obtain low cross-linked macroporous polystyrene- Divinyl benzene resin, that is, white balls.

[0040] Wherein the dosage of the crosslinking agent is 4% of the total amount of the monomer and the crosslinking agent, the dosage of the porogen is 40% of the weight of the monomer, and the crosslinking degree of the low crosslinking macroporous polystyrene is 2%.

[0041] B) soak the white ball in chloromethyl ether which is 4 times its weight, add 20% zinc chloride of the white ball weight as a catalyst, and carry...

Embodiment 3

[0046] The synthetic steps of another embodiment of the present invention are as follows:

[0047] A) Use styrene as a monomer, divinylbenzene as a crosslinking agent, use No. 200 solvent oil as a porogen, and use gelatin (or polyvinyl alcohol, or a mixture of magnesium carbonate, gelatin, and polyvinyl alcohol) As a dispersant, use benzoyl peroxide as an initiator, and use suspension polymerization method to synthesize macroporous polystyrene-divinylbenzene copolymer with low crosslinking degree, and use ethanol (or acetone, industrial alcohol, low boiling point solvent gasoline) Perform solvent extraction to remove the porogen remaining in the resin channels, and then air-dry to obtain low-crosslinked macroporous polystyrene-divinylbenzene resin, that is, white balls.

[0048] Wherein the dosage of the crosslinking agent is 7% of the total amount of the monomer and the crosslinking agent, the dosage of the porogen is 100% of the weight of the monomer, and the crosslinking de...

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Abstract

The produce discloses a kind of pyridyl modified composite functional adsorption resin with very high crosslinking degree and pyridyl radical as functional radical and its preparation process. The preparation process includes polymerization with styrene as monomer, divinyl benzene as cross-linking agent, liquid wax as pore-creating agent, magnesium carbonate as dispersant and benzoyl peroxide as initiator to produce low crosslinking degree macroporous polystyrene; the subsequent cross-liking reaction with swellant of nitrobenzene, etc. and catalyst Lewis acid, etc. to obtain composite functional resin precursor with different crosslinking degree; and final adding alpha-methyl pyridine for reaction to prepare the pyridyl modified composite functional adsorption resin. The resin has both adsorbing and ion exchanging functions, and may find its wide application in medicine separation, food decoloring, water treatment, etc.

Description

1. Technical field [0001] The invention relates to an adsorption resin and a synthesis method thereof, in particular to a pyridyl-modified composite functional ultra-high cross-linking adsorption resin and a preparation method thereof. 2. Background technology [0002] The pyridyl-containing macroporous anion exchange resin (trade name D280) has been widely used in food decolorization, but the resin has not undergone post-crosslinking reaction, the specific surface area is usually very low, the pore size is large, and the adsorption performance of small molecule organic matter is relatively poor. Poor, the mechanical properties of the resin particles are not high. General ultra-high cross-linked resins can only adsorb and separate organic matter through hydrophobic interactions, and cannot adsorb hydrophilic substances well. [0003] The School of Environment of Nanjing University has applied for a patent (Patent No. ZL01134143.2) of "A Synthetic Method of an Ultra-Highly C...

Claims

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Application Information

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IPC IPC(8): C08J5/20B01J20/26C08F6/00C08F8/20C08F212/08
Inventor 李爱民蒋珍茂张晓葛俊杰吴春金胡学伟王春杨鑫张全兴
Owner NANJING UNIV
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