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Method for preparing high hydroscopicity resin by adding water-adsorbing resin for capturing polyvalent metal ion to unsaturated monomer water solution

A technology of polyvalent metal ions and superabsorbent resins, applied in absorbent pads, medical science, bandages, etc., can solve problems such as unfavorable polymerization reactions and high total metal ions content, and achieve low metal ion content and high retention.

Active Publication Date: 2010-12-01
FORMOSA PLASTICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Another object of the present invention is to provide a method of adding a water-absorbent resin that captures polyvalent metal ions to an aqueous solution of unsaturated monomers to prepare a superabsorbent resin, so as to solve the problems in the production of superabsorbent resins disclosed in the prior art. The total content of metal ions in the required water-soluble unsaturated monomers is too high, which is unfavorable for the polymerization reaction

Method used

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Examples

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reference example 3

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Abstract

The invention discloses a making method of high-hydroscopicity resin, which comprises the following steps: adding neutralizing agent and internal crosslinking agent in the insaturated monomer liquid; adding high-high-hydroscopicity resin to catch polyvalent metal ion; adding starter in the insaturated monomer solution; proceeding free-radical polymerization; cutting the gel; drying; grinding; sieving the fixed grain size; adding surface crosslinking agent; heating.

Description

A method of adding a water-absorbent resin that captures polyvalent metal ions to an aqueous solution of unsaturated monomers to prepare a superabsorbent resin technical field The present invention relates to a superabsorbent resin, in particular to a method for preparing the superabsorbent resin by adding a water-absorbent resin capable of capturing polyvalent metal ions to an unsaturated monomer aqueous solution. Background technique Superabsorbent resins are widely used as water retention agents in agriculture or gardening, anti-dew condensation agents in building materials, materials for removing moisture from petroleum, outer waterproof coating agents in cables, and hygienic products such as Diapers, feminine hygiene products, disposable wipes, etc. In the above-mentioned use cases, since the superabsorbent resin will directly contact with the human body, the safety of the superabsorbent resin becomes very important. Generally speaking, the physical properties requir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F265/06C08J3/24C08K5/109A61L15/24
Inventor 施凯耀陈忠毅吴政璋钟宏宗
Owner FORMOSA PLASTICS CORP
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