发明名称 |
METHOD FOR PRODUCTION OF A LIQUID COMPOSITION OF AN ORTHO-DIHYDROXYBENZYL COMPOUND OF HIGH PURITY AND SAID COMPOSITION |
摘要 |
The invention relates to a process for the preparation of a liquid composition of an ortho-dihydroxybenzyl compound of high purity characterized in that it consists inpurifying the initial ortho-dihydroxybenzyl compound by distillation and recovering the condensed ortho-dihydroxybenzyl compound in an apparatus resistant to corrosion by the latter, and then mixing it with an organic solvent in a storage tank which is lined or made of a material which does not lead to metallic pollution. The invention also relates to a liquid composition of an ortho-dihydroxybenzyl compound of high purity comprising said compound and an organic solvent of said compound obtained according to said process. |
申请公布号 |
EP1474369(A1) |
申请公布日期 |
2004.11.10 |
申请号 |
EP20030720616 |
申请日期 |
2003.02.17 |
申请人 |
RHODIA CHIMIE |
发明人 |
MATHIEU, CLAUDE |
分类号 |
C11D7/26;C07C37/74;C07C37/88;C07C39/08;C07C39/28;C07C41/42;C07C43/23;C07C45/82;C07C47/565;C11D7/32;C11D7/50 |
主分类号 |
C11D7/26 |
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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