Method and device for preparing water-absorbent resin

A technology of water-absorbing resin and built-in template, applied in the field of continuous pipeline reaction device, can solve problems such as difficulties, and achieve the effects of preventing flying temperature and explosion, saving energy, and being easy to operate.

Inactive Publication Date: 2004-11-17
WUHAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, even with these features in these methods, it is still difficult to produce water-absorbent resins with high water-absorbing properties

Method used

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  • Method and device for preparing water-absorbent resin
  • Method and device for preparing water-absorbent resin

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0021] A kind of preparation steps of water-absorbing, water-retaining resin is:

[0022] a. Add 5830 parts of water, 950 parts of sodium hydroxide, 2053 parts of acrylic acid, 1 part of N, N'-methylenebisacrylamide and 1.2 parts of potassium persulfate into an ordinary glass-lined stirring tank, and stir well;

[0023] B, above-mentioned raw material is added in reaction vessel 1;

[0024] c. The reaction vessel 1 should be at the charging position of the assembly line device;

[0025] d. The reactor A containing the reaction raw materials leaves the charging position 11 under the action of the assembly line conveying device 8, and passes through the preheating section 12, the reaction section 13, and the heat preservation section in the device system tank 9 in a counterclockwise direction. 14. The temperature is 50-70°C, and finally reaches the discharge position ...

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Abstract

The invention discloses a process for preparing absorbent resin comprising, charging water, sodium hydroxide, acrylic acid, N, N'-methylene di-propenamide and potassium peroxodisulfate into stirring still, homogenizing, going through preheating section, reaction section, heat preservation section in sequence, carrying out heat exchange and polymerization reaction.

Description

technical field [0001] The present invention relates to a preparation method of water-absorbent resin. The present invention also relates to a continuous assembly line reaction device integrating static polymerization, heat exchange and slicing forming functions, which is suitable for sanitary napkins, disposable diapers, industrial water-absorbing agents and agricultural, Forestry and gardening water retaining agent, dehydrating agent, etc. Background technique [0002] So far, there are many kinds of production methods of the patent report water-absorbent resin. For example, Japanese Patent Publication No. 56 (1981)-181.408, No. 57 (1982)-94.011, No. 57 (1982)-158.209, No. 57 (1982)-198.714 and Chinese Patent No. 98119318, which adopt the principle of inverse suspension polymerization. [0003] Adopting the reverse phase suspension polymerization method requires a large amount of organic solvents, therefore, the disadvantages of this method a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F220/56
Inventor 郑穹彭俊清罗辉旭孙莺王海波尚娜段建利
Owner WUHAN UNIV
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