Abstract： |
The present invention relates to a high hydroscopicity resin and its preparation method. The method includes the following steps: firstly, using polyethylene glycol whose molecular weight is 200-1500 to make reduced pressure distrillation, making it be reacted with metal sodium powder to obtain polyethylene glycol sodium; using chloroform as solvent, making polyethylene glycol sodium and acryloyl chloride implement closed reaction under the certain condition, and making the reactant undergo the process of filtration and reduced pressure distillation to obtain crosslinking agnet polyethylene glycol diacrylate with different molecular weight, then adding deionized water into monomer acrylic acid, using sodium hydroxide to make partial neutralization, adding 2-methyl-(2-acrylamido) sodium propane-sulfonate, introducing nitrogen gas, adding the above-mentioned crosslinking agent, finally adding peroxide initiator to make reaction so as to obtain the invented high hydroscopicity resin. |
Relevancy information
