The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 06, 2016
Filed:
Jul. 17, 2014
Lg Chem, Ltd., Seoul, KR;
Chul Hee Ryu, Daejeon, KR;
Gi Cheul Kim, Daejeon, KR;
LG Chem, Ltd., , KR;
Abstract
The present invention relates to a method for preparing a super absorbent polymer. The method for preparing a super absorbent polymer according to the present invention comprises the steps of: carrying out a thermal polymerization or a photopolymerization of a monomer composition including a water-soluble ethylene-based unsaturated monomer and a polymerization initiator to form a hydrogel polymer; drying the hydrogel polymer; pulverizing the dried polymer; mixing a fine powder having a particle diameter of 180 μm or less and a polymer having a particle diameter of 300 μm or more among the pulverized polymer; and adding steam to the mixture to carry out a reassembling. According to the present invention, the super absorbent polymer having a high fine powder aggregation strength can be obtained.