发明名称 |
METHOD FOR SEPARATING 2,6-DIMETHYLNAPHTHALENE WITH HIGH PURITY |
摘要 |
PURPOSE: A method for separating 2,6-dimethylnaphthalene with high purity is provided which solves the problem of loss of 2,6-dimethylnaphthalene and economical efficiency due to addition of the pre-treatment process and easily obtains the 2,6-dimethylnaphthalene with high purity. CONSTITUTION: A method comprises steps of: (i) selectively separating the mixture of dimethylnaphthalene isomer containing 2,6-dimethylnaphthalene from naphthalene mixture containing dimethylnaphthalene isomers by fractional distillation or recrystallization; and (ii) separating the 2,6-dimethylnaphthalene from the mixture of dimethylnaphthalene isomer containing 2,6-dimethylnaphthalene by pressure crystallization using solvent.
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申请公布号 |
KR20000050905(A) |
申请公布日期 |
2000.08.05 |
申请号 |
KR19990001053 |
申请日期 |
1999.01.15 |
申请人 |
KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY;SK CHEMICALS CO., LTD. |
发明人 |
JO, YEONG SANG;CHOI, KWANG JIN;KIM, YEONG DAE;SIM, SANG JUN;WOO, KYEONG JA;KIM, JU HEE |
分类号 |
C07C7/10;(IPC1-7):C07C7/10 |
主分类号 |
C07C7/10 |
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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