发明名称 |
CONTINUOUS EXTRACTION OF POLYPHENYLENE SULFIDE |
摘要 |
<p>A method for continuously extracting water soluble impurities from particulate arylene sulfide polymers in which a slurry of water and polymer containing from about 3 to about 30 percent by weight polymer is raised to a temperature in the range of about 250.degree. F to about 420.degree.F by continuous transfer of slurry in indirect contact with hot heat exchange medium followed by continuous separation of polymer from the water. In a preferred embodiment, the slurry is cooled before separation of polymer from the water and a closed cycle of heat exchange medium is used at least partially to heat and at least partially to cool the slurry during the process.</p> |
申请公布号 |
CA1233939(A) |
申请公布日期 |
1988.03.08 |
申请号 |
CA19830434393 |
申请日期 |
1983.08.11 |
申请人 |
PHILLIPS PETROLEUM COMPANY |
发明人 |
SHERK, FRED T.;NESHEIWAT, AFIF |
分类号 |
B01D11/02;C08G75/02;C08G75/06;(IPC1-7):C08G75/02;C08J11/00 |
主分类号 |
B01D11/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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