发明名称 |
Preparation and purification of hydroxylamine stabilizers |
摘要 |
The invention relates to the preparation of ultra-high purity 1,2-diaminocyclohexane-tetraacetic acid being essentially free of unwanted metal and metal ion contaminants and its use as a stabilizer for ultra-high purity hydroxylamine compounds used extensively in the production of high premium electronic components.
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申请公布号 |
US7045655(B2) |
申请公布日期 |
2006.05.16 |
申请号 |
US20030731123 |
申请日期 |
2003.12.10 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
WARD IRL E.;FRENCH DANIELLE |
分类号 |
C07C229/00;C07C227/00;C07C227/02;C07C229/46 |
主分类号 |
C07C229/00 |
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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