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:
Oct. 20, 2015
Filed:
Dec. 28, 2009
Yong-jun Shin, Seoul, KR;
Sung-gi Kim, Gyeonggi-do, KR;
Jae-bong Lim, Gyeonggi-do, KR;
Joon-sang Cho, Gyeonggi-do, KR;
Il-hoon Cha, Gyeonggi-do, KR;
Yong-Jun Shin, Seoul, KR;
Sung-Gi Kim, Gyeonggi-do, KR;
Jae-Bong Lim, Gyeonggi-do, KR;
Joon-Sang Cho, Gyeonggi-do, KR;
Il-Hoon Cha, Gyeonggi-do, KR;
SK Chemicals Co., Ltd., , KR;
Abstract
The present invention relates to a method for preparing polyarylene sulfide with a reduced free iodine content. More specifically, the method for preparing polyarylene sulfide includes: (a) polymerizing reactants including a diiodo aromatic compound and a sulfur compound to form a polyarylene sulfide; and (b) maintaining the polyarylene sulfide product at 100 to 260° C. for heat-setting. The preparation method of the present invention effectively reduces the free iodine content of the polyarylene sulfide to prevent potential corrosion of facilities for the subsequent process and improves the properties of the polyarylene sulfide product such as thermal stability, so the method can be usefully applied to industrial fields in regard to the preparation of polyarylene sulfide.