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. 14, 2014
Filed:
Dec. 22, 2009
Yong-jun Shin, Seoul, KR;
Jae-bong Lim, Gyeonggi-do, KR;
Joon-sang Cho, Gyeonggi-do, KR;
Il-hoon Cha, Gyeonggi-do, KR;
Sung-gi Kim, Gyeonggi-do, KR;
Yong-Jun Shin, Seoul, KR;
Jae-Bong Lim, Gyeonggi-do, KR;
Joon-Sang Cho, Gyeonggi-do, KR;
Il-Hoon Cha, Gyeonggi-do, KR;
Sung-Gi Kim, Gyeonggi-do, KR;
SK Chemicals Co., Ltd., , KR;
Abstract
The present invention relates to a method for preparing polyarylene sulfide, in which the polyarylene sulfide is prepared by a polymerization reaction of reactants including a diiodo aromatic compound and a sulfur compound, the method including: further adding 0.01 to 10.0 wt. % of diphenyl disulfide with respect to the weight of the polyarylene sulfide to the reactants to form the polyarylene sulfide having a melting point of 265 to 320° C. The diphenyl disulfide included in the reactants according to the present invention costs far less than other conventional polymerization inhibitors to dramatically lower the production cost, and the polyarylene sulfide prepared using the diphenyl disulfide exhibits low iodine content and very excellence in thermal stability.