18687582. Method for Preparing Super Absorbent Polymer (LG CHEM, LTD.)
Method for Preparing Super Absorbent Polymer
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Method for Preparing Super Absorbent Polymer
This abstract first appeared for US patent application 18687582 titled 'Method for Preparing Super Absorbent Polymer
Original Abstract Submitted
A method for preparing a super absorbent polymer, includes: feeding a composition containing a water-soluble ethylenically unsaturated monomer having an acidic group of which at least a part is neutralized, an internal crosslinking agent, and a polymerization initiator to a polymerization reactor and subjecting the composition to a polymerization reaction to obtain a hydrous gel polymer; drying the hydrous gel polymer to obtain a dried substance; hydrating the dried substance to adsorb moisture to the dried substance; and pulverizing the hydrated dried substance to obtain a super absorbent polymer. The method reduces an amount of fine particles generated in the pulverization step, thereby increasing a yield of the super absorbent polymer.