Method for improving resin performance in suspension polymerization production resin through interpenetrating method

A technology of suspension polymerization and resin performance, applied in chemical instruments and methods, anion exchange, ion exchange, etc., can solve problems such as long cycle, high production cost, and complicated process

Inactive Publication Date: 2018-01-30
JIANGSU JIANYA ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the synthesis and embedding of functional groups is required, it is often affected by the cross-linked network structure of the cured polymer in the polymer resin beads. To achieve the optimal purpose of functional groups such as total capacity and characteristic

Method used

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  • Method for improving resin performance in suspension polymerization production resin through interpenetrating method
  • Method for improving resin performance in suspension polymerization production resin through interpenetrating method
  • Method for improving resin performance in suspension polymerization production resin through interpenetrating method

Examples

Experimental program
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Effect test

Embodiment 1

[0029] In the process of producing styrene-divinylbenzene suspension polymerization gel ion exchange resin (white ball), select the primary polymerization beads with cross-linking degrees of 4%, 7%, 8%, and particle diameter 0.315mm.

[0030] The obtained white balls were reacted according to the conventional sulfonation process; the concentration of sulfuric acid was 93%, the amount of swelling agent dichloroethane was 25% (wt / v), the sulfonation temperature was 80-105°C, and the sulfonation time was 10h. After the material is cooled, the gradient dilution method is used for post-treatment according to the conventional process to obtain a strong-acid cation exchange resin. Table 1 shows the properties of white balls with qualified particle size and their strong acid resins made of conventional primary waste white balls.

[0031] The obtained white balls are processed according to the conventional chloromethylation process (the volume ratio of the balls to chloromethyl ether i...

Embodiment 2

[0035] The styrene monomer is prepared with divinylbenzene DVB accounting for 0.5, 2.5%, 4.0%, 4.5% by weight, adding 0.5%-0.4% benzoyl peroxide BPO by weight, and adding a dispersant in advance; Animal gelatin or polyvinyl alcohol (accounting for 0.6-6,8% by weight of the water phase), the ratio of water phase to monomer is 1:1-1.25. Raise the temperature to 60°C under stirring, adjust the particle size at 60°C, react at 80°C for 3 hours (beads have sunk in the cold water test tube). , washed with boiling water, drained, dried at 10-105°C, and sieved. Wait for the second polymerization. Sieve the aggregated beads of primary polymerization to remove beads less than 0.06mm, boil and wash them in boiling water for 2-3 times, each time for 30 minutes, and then wash them with warm water for 3 times, remove the gelatin or Dispersants such as polyvinyl alcohol and impurities are thoroughly washed, dried at a temperature not higher than 105°C, and prepared St, DVB 0.5%-4.5% (the sa...

Embodiment 3

[0041] By the mixed monomer of methyl acrylate (MA) and divinylbenzene (DVB) with acidic functional group, MA, DVB (wherein DVB mass fraction is 1.0%, 2.5%, 4.0% and initiator benzoyl peroxide (BPO mass fraction is 0.4%-0.8%) solution, fully stirs and makes BPO dissolve completely.In the cross-linking that is formed by styrene divinylbenzene is DVB: in 4%, 5%, 6% white ball (respectively adopt embodiment 2 in the process condition of one-time polymerization to obtain), the amount of mixed monomer is the same as the amount in the primary polymerization beads, carry out the polymerization reaction respectively in the reactor by the technology and the conditions of the secondary polymerization in Example 1, dehydration, drying Dry and sieve, obtain the white ball of particle diameter > 0.315mm.Its white ball is reacted by conventional chloromethylation in embodiment 1, amination reaction can technology and condition again, while amination reaction, make acrylic acid Ester hydroly...

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Abstract

The invention relates to a method for improving resin comprehensive performances by producing an ion exchange resin framework white ball through an interpenetrating, cross-linking, suspending and polymerizing process, and the specific range involved comprises similar interpenetrating and cross-linking of styrene/divinyl benzene and styrene/divinyl benzene, heterogeneous interpenetrating and cross-linking of styrene/divinyl benzene and divinyl benzene or triallyl isocyanurate as well as heterogeneous interpenetrating and cross-linking of styrene/divinyl benzene and chloroethylene/ divinyl benzene. According to the method disclosed by the invention, a white ball (smaller than 0.3 mm) with an unqualified once polymerized ball body is polymerized again under the same condition through secondary polymerization, so that the grain size is increased, and the white ball which meets standard grain size range (greater than 0.3mm-0.8mm); under the special condition, various resins prepared by performing secondary polymerization on a same monomer cross-linking agent of different concentrations can effectively reduce heterogeneity, in the polymerized ball body, of the cross-linking agent.

Description

technical field [0001] The invention belongs to the field of fine chemical macromolecular resin synthetic materials, in particular to a method for improving the properties of the resin by interpenetration in the production of the resin by suspension polymerization. Background technique [0002] Since the successful industrialization of suspension polymerization in the 1930s, it has become an important polymerization method, such as polyvinyl chloride, polystyrene and its copolymers, acrylic acid and ester copolymers, polyethyl acetate copolymers, etc., and its output is about Accounting for about 20%-25% of the total polymer output, it plays an important role in the field of polymer synthetic materials. Suspension polymerization is a heterogeneous system, but its mechanism is similar to bulk polymerization and solution polymerization. From an economic point of view, homogeneous bulk polymerization is the most reasonable polymerization method, but the system viscosity is very...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F212/36C08F220/14C08F257/02C08F220/06C08F220/44C08F226/06C08F2/20B01J39/20B01J41/14
Inventor 戴亚平邱志荣易凯
Owner JIANGSU JIANYA ENVIRONMENTAL PROTECTION TECH CO LTD
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