申请人:TEXACO CHEMICAL COMPANY
公开号:EP0518458A1
公开(公告)日:1992-12-16
Fatty imidazolium salts which are useful as algicides have the formula:
wherein R¹ is an alkyl group having 1 to 6 carbon atoms, R² is a fatty alkyl group having 8 to 36 carbon atoms, or an alkylene group having 8 to 36 carbon atoms substituted by an imidazolium ring of the formula:
R³ is an alkyl or aralkyl group having 1 to 8 carbon atoms, and X is a halide or methylsulphate anion.
The imidazolium salts can be prepared by
(a) reacting a fatty acid and an N-alkylethylenediamine
(b) dehydrogenating the resulting reaction product to form a fatty imidazole, and
(c) reacting the fatty imidazole with an aliphatic or araliphatic halide or dimethyl sulphate at a temperature of 70 to 120°C and a pressure of 0.1 to 21 MPa.
脂肪基咪唑盐可用作杀藻剂,其化学式如下:其中R¹是具有1至6个碳原子的烷基基团,R²是具有8至36个碳原子的脂肪烷基基团,或者是具有8至36个碳原子的烷基基团,其上取代有一个咪唑环,化学式为:R³是具有1至8个碳原子的烷基或芳基烷基基团,X是卤离子或甲基磺酸盐阴离子。咪唑盐可以通过以下步骤制备:(a)反应脂肪酸和N-烷基乙二胺(b)脱氢产生脂肪咪唑,以及(c)将脂肪咪唑与脂肪烷基卤化物或二甲基硫酸酯在70至120°C的温度和0.1至21MPa的压力下反应。