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:
Nov. 19, 2024
Filed:
Oct. 10, 2019
Lg Chem, Ltd., Seoul, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
The invention relates to superabsorbent polymer that not only has excellent basic absorption performance, but also exhibits more improved permeability under pressure, and thus, can improve rewet property and leak inhibition property of hygienic products such as a diaper, and the like, and a method for preparing the same. The superabsorbent polymer comprises base resin powder comprising first crosslinked polymer of water soluble ethylenically unsaturated monomers having acid groups of which at least a part are neutralized; and a surface crosslink layer on the base resin powder, comprising second crosslinked polymer formed by additional crosslinking of the first crosslinked polymer by a surface crosslinking agent, wherein the surface crosslinking agent comprises a polymer type first surface crosslinking agent having number average molecular weight of 300 or more, and having plural hydroxy groups or epoxy groups.