发明名称 |
A 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) <IMG> wherein n is a number from 2 to 50; the radicals R1 are for example 2,2,6,6-tetr amethyl-4-piperidyl, R2 is for example hexamethylene and E is for example t-octylamino; which comprises a) reacting a compound of the formula (A) <IMG> with a compound of the formula (B) <IMG> 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) <IMG> to obtain the product corresponding to the formula (I), the molar ratio of the c ompound 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 an d in an inert atmosphere.
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申请公布号 |
CA2239139(A1) |
申请公布日期 |
1998.11.30 |
申请号 |
CA19982239139 |
申请日期 |
1998.05.28 |
申请人 |
CIBA SPECIALTY CHEMICALS HOLDING INC. |
发明人 |
TOMEI, MARCO |
分类号 |
C07D251/44;C07D401/14;C08G73/08;C08K5/3492;(IPC1-7):C08G73/06 |
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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