Method for synthesizing super absorbent resin

A technology of superabsorbent resin and synthesis method, which is applied in the direction of chemical instruments and methods, fertilizer mixtures, applications, etc., can solve the problems of not being able to meet the growing demand, limit the use of water-absorbent resin, and poor water retention, and achieve cost Low cost, simple production operation and control, and strong weather resistance

Inactive Publication Date: 2015-01-21
骆德元
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

In this patented technology, it allows for easy manufacturing of small amounts (up to 20000 grams) of specific types of plastic that have excellent properties such as being able to hold liquids without losing their shape when they shouldn't), making them ideal for use in various applications like disposable diapers, feminine hygiene products, cleaners, etc., while also having superior characteristics with respect to prevention of clumpings during storage over time.

Problems solved by technology

The technical problem addressed by this patented technology relates to improving the performance (water holding capacity) or reducing cost associated with producing an effective liquid storage system for cleaning applications like personal hygiene products.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A preferred version of the superabsorbent resin preparation method of the present invention comprises the following steps:

[0034] (1) Put 36.3 parts of acrylic acid into the reaction kettle, neutralize with 32% sodium hydroxide solution to a neutralization degree of 75%, add 0.01 parts by weight of N,N-methylenebis(meth)acrylamide, glycerine 0.05 parts by weight of alcohol, 0.02 parts by weight of polyethylene glycol (200) diacrylate, and 0.1 parts by weight of Span-20, stirred evenly to obtain a polymerization feed liquid;

[0035] (2) Put the material liquid prepared in (1) into a PE plastic bag so that the thickness of the material liquid is about 65mm, and put it in the sun for 5 hours to obtain the water-absorbent resin gel;

[0036] (3) Cutting and granulating the gel obtained in (2), drying, pulverizing, and sieving to obtain a superabsorbent resin.

Embodiment 2

[0038] A preferred version of the superabsorbent resin preparation method of the present invention comprises the following steps:

[0039] (1) Put 31.9 parts of acrylic acid into the reaction kettle, neutralize with 32% sodium hydroxide solution to a neutralization degree of 80%, add 0.05 parts by weight of N,N-methylenebis(meth)acrylamide, polyethylene 0.05 parts by weight of diol dimethacrylate, 0.02 parts by weight of polyethylene glycol (200) diacrylate, 0.01 parts by weight of trimethylolpropane triacrylate, 0.1 parts by weight of Span-20, and stir evenly to obtain a polymeric material liquid;

[0040] (2) Put the material liquid prepared in (1) into a PE plastic bag so that the thickness of the material liquid is about 65mm, and put it in the sun for 5 hours to obtain the water-absorbent resin gel;

[0041] (3) Cutting and granulating the gel obtained in (2), drying, pulverizing, and sieving to obtain a superabsorbent resin.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for preparing super absorbent resin. The method comprises the steps of neutralizing an acrylate polymonomer with a sodium hydroxide (potassium hydroxide) solution till the neutralization degree is 60-80% to obtain a polymonomer solution, sequentially adding a secondary monomer and a cross linker, mixing uniformly, radiating the mixture for 1-4 hours in the sun to obtain absorbent resin gel, and cutting and drying the gel to obtain the super absorbent resin. By adopting the method, any chemical initiator including a photo-initiator is not needed, so that the polymerization reaction is not controlled by the concentration of the initiator, and the method has the advantages of being simple in operation, easy to control, environment-friendly and energy-saving. Moreover, the super absorbent resin is subjected to surface cross-linking treatment and surface compounding treatment respectively to obtain absorbent resin for hygienic materials and a soil water holding agent which have good water absorption performance.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Owner 骆德元
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap