Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From ketone or ketene reactant
Patent
1989-12-29
1992-02-18
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From ketone or ketene reactant
525471, 525537, 528388, 528224, 528481, 528494, 528495, 528498, 528499, C08G 200
Patent
active
050895974
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.
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Geibel John E.
Nesheiwat Afif M.
Dollar Beverly M.
Marquis Melvyn I.
Phillips Petroleum Company
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