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. 03, 1978
Filed:
Mar. 30, 1976
Kenneth L Anderson, Bartlesville, OK (US);
Donald G Kuper, Borger, TX (US);
Phillips Petroleum Company, Bartlesville, OK (US);
Abstract
Continuous production of arylene sulfide polymer is provided in a series of two or more reactors. A compound serving as a sulfur source is contacted in an organic amide with a dihalo aromatic compound and, optionally, at least one polymerization modifying compound to produce arylene sulfide polymer. The reaction mixture boils in each of a series of reaction zones to partially concentrate the mixture by removal of water and diluent and to remove polymerization heat. The degree of removal of water and organic amide is regulated to control the pressure in each boiling reactor so that polymer slurry is induced to flow to each subsequent reaction zone without pumping. Preferably an ascending reactor temperature profile is employed.