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Hyper cross-linking resin as well as preparation method and application thereof

An ultra-high cross-linked resin and resin technology, applied in chemical instruments and methods, other chemical processes, alkali metal oxides/hydroxides, etc., can solve internal structure inhomogeneity, difficult control of pore structure, and poor decolorization effect and other problems, to achieve the effect of simplifying the production method and good decolorization effect

Inactive Publication Date: 2016-08-24
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide an ultra-high cross-linked resin to solve the problems of inhomogeneous internal structure, difficult control of pore structure and poor decolorization effect in the prior art.

Method used

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  • Hyper cross-linking resin as well as preparation method and application thereof
  • Hyper cross-linking resin as well as preparation method and application thereof
  • Hyper cross-linking resin as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1: The preparation method of chloromethylstyrene-divinylbenzene gel type resin with 2% crosslinking degree specifically comprises the following steps:

[0044](1) Water-to-oil ratio=8:1, the water phase is composed of 50ml of deionized water, 0.1g of polyvinyl alcohol, 1.65g of sodium chloride, and 0.08g of hydroquinone; the composition of the oil phase is 6.34 p-chloromethylstyrene g, divinylbenzene 0.129g, azobisisobutyronitrile 0.0646g; before adding the water phase, pass argon for 30 minutes in advance, add the oil phase to the water phase at 50°C and mix for 1 hour, raise the temperature to 80°C for 20 hours, and react in the later stage Raise the temperature to 110°C for aging for 2 hours and then cool to room temperature naturally.

[0045] (2) The obtained product was repeatedly washed 3 times with deionized water heated to 80°C, solidified with methanol and washed 3 times, then Soxhlet extracted with ethanol for 8 hours, at a relative vacuum lower th...

Embodiment 2

[0049] Embodiment 2: the preparation method of hole type chloromethyl styrene resin specifically comprises the following steps:

[0050] (1) Water-to-oil ratio=8:1, the water phase is composed of 50ml of deionized water, 0.1g of polyvinyl alcohol, 1.65g of sodium chloride, and 0.08g of hydroquinone; the composition of the oil phase is 5.498g of chloromethyl styrene , divinylbenzene 0.97g, azobisisobutyronitrile 0.0646g, toluene 6.1ml; before adding the water phase, pass argon for 30 minutes in advance, add the oil phase to the water phase at 50°C and mix for 1 hour, then raise the temperature to 80°C for 20 hours In the later stage of the reaction, the temperature was raised to 110° C. for aging for 2 h, and then naturally cooled to room temperature.

[0051] (2) The obtained product was repeatedly washed 3 times with deionized water heated to 80°C, solidified with methanol and washed 3 times, then Soxhlet extracted with acetone for 8 hours to remove the porogen, and the relat...

Embodiment 3

[0055] Embodiment 3: the preparation method of 10% cross-linking degree chloromethyl styrene-divinyl benzene resin, specifically comprises the following steps:

[0056] (1) Water-to-oil ratio=8:1, the water phase is composed of 50ml of deionized water, 0.1g of magnesium hydroxide, 1.65g of sodium chloride, and 0.08g of methylene blue; the composition of the oil phase is 5.821g of p-chloromethylstyrene, two Vinylbenzene 0.647g, dibenzoyl peroxide

[0057] 0.0646g; pass argon gas for 30 minutes in advance before adding the water phase, add the oil phase to the water phase at 50°C and mix for 1 hour, raise the temperature to 60°C and react for 20 hours, then raise the temperature to 110°C for aging for 2 hours in the later stage of the reaction, then cool to room temperature naturally.

[0058] (2) The obtained product was repeatedly washed 3 times with deionized water heated to 80°C, solidified with methanol and washed 3 times, then Soxhlet extracted with ethanol for 8 hours, at...

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Abstract

The invention discloses hyper cross-linking resin which is prepared by taking alpha methyl styrene and divinylbenzene as raw materials, changing the cross-linking degree or adding different pore-foaming agents, performing suspension polymerization so as to obtain aperture controllable gel type and porous precursor resin, enabling the precursor resin to react with a catalyst in a swelling state, performing Friedel-Crafts reaction, thereby obtaining the hyper cross-linking resin with a high specific surface area, a large pore volume and a controllable aperture. The invention further discloses a preparation method and application of the hyper cross-linking resin. Compared with the prior art, the preparation method is simple, carcinogenic substances such as chloromethyl ether is not adopted for chloromethylation, the cost is low, industrial production can be achieved, and the prepared hyper cross-linking resin is relatively good decoloring effect on organic acid.

Description

technical field [0001] The invention belongs to the field of polymer synthesis, and in particular relates to an ultra-high cross-linked resin and its preparation method and application. Background technique [0002] In the late 1990s, Davankov introduced new cross-links to linear polystyrene or low cross-linked polystyrene through the Friedel-Crafts reaction, using an external electrophile, because of its high degree of cross-linking, commonly known as super Highly cross-linked polystyrene resin. This type of ultra-highly cross-linked polystyrene resin has structural characteristics such as large specific surface area, small average pore size, narrow pore size distribution, and good mechanical strength. Expansion, so it has the advantages of good swelling, excellent heat resistance and long service life. [0003] At present, the industrial synthesis of styrene-based ultra-high cross-linked resins is to obtain chloromethyl polystyrene-divinylbenzene resins through chloromet...

Claims

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Application Information

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IPC IPC(8): C08F212/14C08F212/36C08J9/28B01J20/26B01J20/28B01J20/30
CPCC08F212/14C08J9/28B01J20/267B01J20/28054C08J2201/0502C08J2325/18C08F212/36
Inventor 应汉杰潘维钢周精卫吴菁岚陈勇庄伟王莹莹
Owner NANJING UNIV OF TECH
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