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:
Jan. 30, 2018
Filed:
Feb. 01, 2016
SK Innovation Co., Ltd, Seoul, KR;
SK Global Chemical Co., Ltd., Seoul, KR;
Ju-Hee Kim, Daejeon, KR;
Du-Youn Ka, Daejeon, KR;
Byoung-Tak Yim, Daejeon, KR;
Byoung-Cheon Jo, Seoul, KR;
SK INNOVATION CO., LTD., Seoul, KR;
SK GLOBAL CHEMICAL CO., LTD., Seoul, KR;
Abstract
A super-absorbent polymer satisfying Equation 1 exhibits remarkably improved shape rupture under pressure while maintaining excellent absorption ability. The super-absorbent polymer may be prepared by preparing a base resin by polymerizing a polymeric compound containing an acrylic monomer by using a polyfunctional nitroxide mediated radical polymerization initiator, substituting a terminal of the polymer prepared in the polymerization step with maleic anhydride, cross-linking each maleic anhydride terminal of different polymers prepared in the substitution step by using alkylenediamine having 2 to 8 carbon atoms, drying and grinding the base resin, and surface cross-linking the ground base resin.