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:
Jun. 05, 2018
Filed:
Feb. 17, 2016
Applicant:
Ticona Llc, Florence, KY (US);
Inventor:
Hendrich A. Chiong, Cincinnati, OH (US);
Assignee:
Ticona LLC, Florence, KY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 75/14 (2006.01); C08L 81/02 (2006.01); C08G 75/0209 (2016.01);
U.S. Cl.
CPC ...
C08G 75/14 (2013.01); C08G 75/0209 (2013.01); C08L 81/02 (2013.01);
Abstract
A method for forming a polyarylene sulfide is provided. The method comprises supplying a waste composition to a vessel, the waste composition containing arylene sulfide byproducts, such as an arylene sulfide oligomer, cyclic polyarylene sulfide, and/or fine polyarylene sulfide particles. The arylene sulfide byproducts are heated to a temperature of from about 260° C. to about 285° C. in the presence of a sulfur reactant, thereby forming a high molecular weight polyarylene sulfide having a number average molecular weight of about 2,000 Daltons or more.