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:
Feb. 18, 1992
Filed:
Dec. 29, 1989
Afif M Nesheiwat, Madison, NJ (US);
John E Geibel, Bartlesville, OK (US);
Phillips Petroleum Company, Bartlesville, OK (US);
Abstract
The invention is a process to provide more granular, higher bulk density particulate poly(arylene sulfide ketone) or poly(arylene sulfide diketone) resins having associated therewith improved handling. The process for treating a first slurry comprising a solid particulate poly(arylene sulfide ketone) or poly(arylene sulfide diketone) resin dispersed in a liquid medium comprising a polar organic compound, comprises: (a) liquifying the first solid particulate resin in the first slurry to form a first mixture comprising a liquified resin and the polar organic compound; (b) adding, to the first mixture, a sufficient amount of at least one separaton agent to produce a second mixture, and (c) reducing the temperature of the second mixture sufficiently to solidify the liquified resin to form a second slurry comprising a polar organic compound and a second solid particulate resin having a bulk density greater than the first solid particulate resin would if recovered. In other embodiments, the above-described process is accomplished without generating pressure significantly greater than those generated during polymerization reactions of particulate poly(arylene sulfide ketone) or poly(arylene sulfide diketone) resins.