发明名称 |
Process for the preparation of polytriazine products containing 2, 2, 6, 6-tetramethyl-4-piperidyl groups |
摘要 |
A process for the preparation of a product corresponding to the formula (I) wherein n is a number from 2 to 50; the radicals R1 are for example 2,2,6,6-tetramethyl-4-piperidyl, R2 is for example hexamethylene and E is for example t-octylamino; which comprises a) reacting a compound of the formula (A) with a compound of the formula (B) in a molar ratio of 1:1.7 to 1:4; and b) reacting the product obtained in a) with a compound of the formula (C) to obtain the product corresponding to the formula (I), the molar ratio of the compound of the formula (C) to the compound of the formula (A) being 2:1 to 1:5; the reactions a) and b) being carried out in an organic solvent, in the presence of an inorganic base and in an inert atmosphere.
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申请公布号 |
US5919929(A) |
申请公布日期 |
1999.07.06 |
申请号 |
US19980084682 |
申请日期 |
1998.05.26 |
申请人 |
CIBA SPECIALTY CHEMICALS CORPORATION |
发明人 |
TOMEI, MARCO |
分类号 |
C07D251/44;C07D401/14;C08G73/08;C08K5/3492;(IPC1-7):C07D401/14 |
主分类号 |
C07D251/44 |
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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