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:
May. 16, 1978
Filed:
Mar. 30, 1976
James T Edmonds, Jr, Bartlesville, OK (US);
Robert W Campbell, Bartlesville, OK (US);
Phillips Petroleum Company, Bartlesville, OK (US);
Abstract
A method is provided in the production of an arylene sulfide polymer by employing a p-dihalobenzene, optionally together with a minor amount of a polyhalo aromatic compound having more than two halogen substituents per molecule; an alkali metal sulfide; an alkali metal carboxylate; a base selected from alkali metal hydroxides and alkali metal carbonates; and an organic amide using a profile of selected temperature ranges within the range of polymerization reaction temperature for the process which results in a polymer of lower melt flow than that of the polymer produced when one polymerization temperature is used throughout the polymerization stage.