发明名称 |
Method for recovering lithium chloride. |
摘要 |
<p>A method for recovery of lithium chloride wherein a dihalogen aromatic compound is reacted with an alkali metal sulfide and/or an alkali metal hydrosulfide in a polar solvent in the presence of lithium chloride and wherein after polyarylene sulfide particles and a matter insoluble in the solvent are separated from the resulting mixture, lithium chloride is recovered from a residual solution, characterized in that lithium chloride in the residual solution is separated on crystallization. In this manner, high purity lithium chloride may be recovered at a lower cost by a simple equipment, whilst high quality polyarylene sulfide may be obtained.</p> |
申请公布号 |
EP0477964(A2) |
申请公布日期 |
1992.04.01 |
申请号 |
EP19910116499 |
申请日期 |
1991.09.27 |
申请人 |
IDEMITSU PETROCHEMICAL CO. LTD. |
发明人 |
SUZUKI, HIDETOSHI;KOYAMA, YOSHINARI |
分类号 |
C08G75/02;C01D15/04;C08G75/06 |
主分类号 |
C08G75/02 |
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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