Check patentability & draft patents in minutes with Patsnap Eureka AI!

Environment-friendly super-absorbent resin and preparation method thereof

A super absorbent resin, green technology, applied in the field of super absorbent materials, can solve the problems of decolorization during the use of green super absorbent resin, and achieve good market prospects and good bonding fastness.

Inactive Publication Date: 2015-04-22
SHAANXI TECHN INST OF DEFENSE IND
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a green superabsorbent resin, which solves the problem of decolorization of the existing green superabsorbent resin during use

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Environment-friendly super-absorbent resin and preparation method thereof
  • Environment-friendly super-absorbent resin and preparation method thereof
  • Environment-friendly super-absorbent resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0045] The preparation method of the above-mentioned green super absorbent resin specifically includes the following steps:

[0046] Step 1. Add the acrylic monomer from which the polymerization inhibitor has been removed into water and stir evenly to obtain an acrylic acid aqueous solution; wherein the mass ratio of acrylic monomer to water is 1:0.5-5;

[0047] Step 2. Under stirring conditions, add a monobasic strong alkali aqueous solution to the acrylic acid aqueous solution obtained in step 1. The monobasic strong alkali aqueous solution is sodium hydroxide solution or potassium hydroxide solution, and its mass concentration is preferably 20%-50%. And the reaction is completed to obtain an acrylic acid salt aqueous solution with a neutralization degree of 50% to 80%;

[0048] Step 3. Add functional monomers to the aqueous acrylate solution obtained in step 2 while maintaining stirring conditions, and stir to obtain mixture A; wherein the mass ratio of acrylic acid monomer to fun...

Embodiment 1

[0056] Add 10g of acrylic monomer from which the polymerization inhibitor has been removed into 50g of water and stir uniformly to obtain an acrylic acid aqueous solution; under stirring conditions, use a sodium hydroxide solution with a mass concentration of 25% to neutralize the acrylic acid aqueous solution to 80% to obtain neutralization Acrylic acid salt aqueous solution with a degree of 80%; while maintaining stirring, add 1 g of functional monomer M1 to the above-mentioned acrylate aqueous solution with a degree of neutralization of 80%, and stir to obtain a mixture A; Add 0.01g of the crosslinking agent N,N'-methylenebisacrylamide to A, and stir to obtain mixture B; add 10g of acrylamide to mixture B and stir well to obtain mixture C; add 0.1g to mixture C to start Ammonium persulfate, after fully stirring and mixing uniformly, control the reaction temperature to 65°C, keep the stirring reaction for 5 hours to obtain a crude water-containing product; dry the crude water-...

Embodiment 2

[0063] Add 10g of acrylic monomer from which the polymerization inhibitor has been removed into 5g of water and stir uniformly to obtain an acrylic acid aqueous solution; under stirring conditions, use a sodium hydroxide solution with a mass concentration of 20% to neutralize the acrylic acid aqueous solution to 60% to obtain neutralization Acrylate aqueous solution with a degree of 60%; while maintaining stirring, add 0.1 g of functional monomer M2 to the above-mentioned acrylate aqueous solution with a degree of neutralization of 60%, and stir to obtain mixture A; Add 0.0001g of the cross-linking agent N,N'-methylenebisacrylamide to mixture A, and stir to obtain mixture B; add 1g of 2-acrylamido-2-methylpropanesulfonic acid to mixture B, and stir thoroughly to obtain Mixture C: Add 0.01g of the initiator sodium persulfate to mixture C, stir and mix well, control the reaction temperature to 80°C, keep the stirring reaction for 1 hour, and obtain the crude water-containing produ...

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 environment-friendly super-absorbent resin. The super-absorbent resin is prepared from acrylic acid, a functional monomer, a crosslinking agent and other components at a mass ratio of 1: (0.01-0.1): (0.00001-0.001): (0.1-1). A preparation method of the super-absorbent resin comprises the following steps of adding acrylic acid into water to obtain an aqueous solution of acrylic acid, adding an aqueous solution of strong monobase into the aqueous solution of acrylic acid to obtain an aqueous solution of acrylate, sequentially adding the functional monomer, the crosslinking agent and other components into the aqueous solution of acrylate, adding an initiator for carrying out radical polymerization reaction to obtain an aqueous crude product, drying, mechanically pulverizing and sieving to obtain the final product. By the chemical reaction, environment-friendly monomer with double bonds and acrylic acid (acrylate) are subjected to radical co-polymerization so that the environment-friendly monomer is bonded into the chemical structure of the super-absorbent resin by virtue of covalent bonds, the problem of decolorizing of the existing environment-friendly super-absorbent resin during the use is solved and the phenomena of color losing, fading, uneven green and the like when the resin is in contact with water cannot be caused during the use.

Description

Technical field [0001] The invention belongs to the technical field of super absorbent materials, and specifically relates to a green super absorbent resin. The invention also relates to a preparation method of the green super absorbent resin. Background technique [0002] Super Absorbent Polymer (SAP) is a new type of functional polymer material. Because of its strong water absorption and excellent water retention, it has broad application prospects in agriculture, forestry, gardening, desert prevention, etc. The superabsorbent resin in the early stage of research is mainly acrylate polymer, and the product is white or close to colorless. With the continuous expansion of the application field of super absorbent resins, super absorbent resins with different colors have become a hot spot for research and development. In addition to their practical value, the colorful super absorbent resins also add ornamental value to them. The current main uses of colored super absorbent resin a...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F220/56C08F220/58C08F220/60C08F222/38
Inventor 孙宾宾
Owner SHAANXI TECHN INST OF DEFENSE IND
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com