Patent ID: 9656296
Date: 2017-05-23
CPC Classifications: B01J,B05D,C08F,C09D

Claim:
1. A method of preparing a super absorbent polymer (SAP), including the steps of: preparing a monomer composition including a water-soluble ethylenic unsaturated monomer and a polymerization initiator; preparing a monomer mixture of fine droplets having a sprayed droplet size of 300 μm or less by spraying said monomer composition onto a substrate having a hydrophobic surface, such that said fine droplets flow down from the hydrophobic surface of the substrate to an adjacent polymerization reactor; preparing a fine hydrogel polymer by polymerizing said monomer mixture of fine droplets on the polymerization reactor by receiving said fine droplets from the hydrophobic surface of the substrate to a moving surface of the polymerization reactor, and irradiating said fine droplets with UV rays; and drying said fine hydrogel polymer, wherein the substrate having the hydrophobic surface is positioned such that a plane parallel to the hydrophobic surface of the substrate is inclined at an angle θ