Seung-Mo Lee,Young-Sam Kim,Kyoung-Shil Oh,Young-In Yang,Ye-Hon Kim
申请号：
US14907470
公开号：
US09700871B2
申请日:
2014.12.03
申请国别(地区):
US
年份:
2017
代理人:
摘要：
Disclosed is a method of preparing a superabsorbent polymer, including a) subjecting a monomer composition composed of a water-soluble ethylenic unsaturated monomer and a polymerization initiator to thermal polymerization or photopolymerization, thus preparing a hydrous gel polymer, b) drying the hydrous gel polymer, c) grinding the dried hydrous gel polymer, d) adding the ground hydrous gel polymer with particles having i) a BET specific surface area of 300 to 1500 m2/g and ii) a porosity of 50% or more and with a surface crosslinking agent, and e) performing a surface crosslinking reaction.
