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:
Nov. 01, 1977
Filed:
Mar. 30, 1976
Fernando C Vidaurri, Jr, Bartlesville, OK (US);
Phillips Petroleum Company, Bartlesville, OK (US);
Abstract
Continuous production of arylene sulfide polymer is provided in a series of two or more substantially liquid-full reactors maintained at seriatim reduced temperature and pressure and discharging into a final zone which has a vapor space above a controlled liquid level and is maintained at a pressure lower than the liquid-full reaction train by vapor withdrawal with the reaction temperature increased at least to exceed all but the highest temperature in the liquid-full reactors so that at least a portion of the water produced in the arylene sulfide polymerization and a portion of the organic amide diluent are vaporized to concentrate the reaction slurry. The reaction slurry effluent from the vaporizing reactor can then be flashed with or without the aid of superheated steam dilution to produce a vapor which can be condensed, separated and recycled to the continuous reaction process and a particulate, polymeric product.