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High-sponyiness, salt-resistant high-water-absorption resin preparation and method

A modification and formulation technology, applied in the field of preparation of high-porosity salt-tolerant superabsorbent resin, can solve the problems of research literature, achievements and patent reports of high-porosity salt-tolerant superabsorbent resin, etc. Energy consumption and operators, increase production rate, meet the effect of salt tolerance

Inactive Publication Date: 2004-09-15
张华集
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  • Description
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AI Technical Summary

Problems solved by technology

[0003] Retrieval of relevant materials, including Chinese patent searches, shows that no research literature, achievements and patent reports on high-porosity, salt-tolerant superabsorbent resins have been seen so far.

Method used

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  • High-sponyiness, salt-resistant high-water-absorption resin preparation and method

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Embodiment 1

[0016] Put 40kg of acrylic emulsion in the reaction kettle, start the mixer, dilute 18kg of sodium hydroxide with pure water to 72kg of solution, and slowly add the sodium hydroxide solution into the reaction kettle, control the temperature at 80°C, and neutralize for 13 minutes. Add 23g of cross-linking agent, stir for 5 to 8 minutes, measure and put it into the rotating pan, add 18g of two-component initiator to initiate cross-linking polymerization, and wait for the reactant to become a gel, place it in the extrusion cutting machine Cut into granules of φ2×3mm in the granulator, dry them in a fluidized vibrating bed at 130°C, put them in a crusher for crushing, screen out 80-mesh granules, put them in a high-speed kneader, add 250g of compound surfactants Carry out surface modification (stirring speed 500r.p.m, temperature 80±2°C, time 10min), and then dry in a drying tunnel at 120°C to become a finished product of superabsorbent resin.

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Abstract

The invention discloses a preparation and method of highly loose, high salt-resistance water absorbing resin, using crylic acid as main material, adding in a certain amount of NaOH, cross-linking agent, double-component initiator and compound surface modifier-aid, and adopting neutralization reaction, initiated cross-linking polymerization, dry-crushing, surface layer secondary cross-linking modification and dry-packaging technique to make it, able to be applied to sanitary nursing articles such as infant diapers (trousers), adult incontinent napkin pieces, sanitary towel, etc. It contains a large number of strong water-absorbing groups, so it can make high-permeability association inside and absorb liquor (blood and urine) through mesh structure, absorbing speed fast, and absorbing multiplying power high, and after absorbing liquor, its surface has good looseness and dryness.

Description

technical field [0001] The invention relates to new polymer chemical materials, in particular to the preparation and method of a high-porosity, salt-resistant superabsorbent resin. Background technique [0002] my country's population has exceeded 1.2 billion, accounting for about a quarter of the world's population. With the rapid development of the national economy and the improvement of people's living standards, the market potential of sanitary products is huge. Physiological hygiene products include liquid (blood, sweat, urine) absorbent products, such as sanitary napkins, diapers (pants), sweat towels, cotton balls (thromostatic plugs), etc. With the continuous development of science and technology, physiological hygiene products are more and more developed towards ultra-thin, comfortable, light and other functions. Therefore, high salt resistance and high water absorption (absorbing physiological saline) resin came into being and developed rapidly. [0003] Retrieva...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F120/06C08J3/24
Inventor 张华集郑叙炎叶盛京许有卯
Owner 张华集
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