| abstract |
The invention discloses a preparation method of a salt-alkali-resistant superabsorbent resin. The method uses renewable rosin as a raw material, reacts with maleic anhydride, further acidifies and acylates, and then reacts with hydroxy acrylate, polyol, The polymerizable rosin containing multiple water-absorbing groups is prepared by the reaction of polyamines and alkanolamines, and then the rosin group containing multiple water-absorbing groups is introduced into the molecular structure of the superabsorbent resin by free radical copolymerization with acrylic acid. The superabsorbent resin prepared by the invention has excellent resistance to salt and alkali, and at the same time, the water absorption speed, water retention and gel strength are improved, the overall comprehensive performance of the superabsorbent resin is further improved, and the application field of the superabsorbent resin is expanded. |