Application Field
Sanitary napkins ,
adult diaper and
baby diapers;
Water-based paint, play a dispersing role;
Textile printing and dyeing auxiliary, play the role of slurry dispersion;
Auxiliary of ceramic processing, which plays a dispersing role;
As a washing aid in detergents, it has a dispersion effect; anti-fouling redeposition effect and thickening effect;
Crystal mud, which can absorb water.
Process Route And Its Synthesis Method
The production process of sodium polyacrylate is as follows.
1. Aggregation method
Firstly, acrylic acid and caustic soda are reacted to produce sodium acrylate monomer, and then the monomer is polymerized into sodium polyacrylate under the trigger of persulfate and reducing agent.
2. Neutralization Law
First, acrylic acid is polymerized into polyacrylic acid under the action of a redox agent, and then polyacrylic acid is neutralized with caustic soda to produce sodium polyacrylate.
3. Saponification method
First, methyl acrylate is formed by the reaction of acrylic acid and methanol, and the suspension or latex after polymerization of methyl acrylate is heated in an aqueous solution of sodium hydroxide to prepare sodium polyacrylate.
4. Hydrolysis method
First, acrylamide is polymerized to produce polyacrylamide, and then polyacrylamide is hydrolyzed to produce sodium polyacrylate under alkaline conditions.
Source: Organized from the Internet.
Reference materials:
1.
Sodium polyacrylate. chemicalbook
2.
Synthesis of sodium polyacrylate and its research progress. Paper Network