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1. 发明公开

EP0221225A1 Process for manufacturing organophilic fibrous clays 失效
标题翻译： Verfahren zum Herstellen von organophilen faserigen Tonen。
公开(公告)号：EP0221225A1
公开(公告)日：1987-05-13
申请号：EP85830264.9
申请日：1985-10-21
申请人： TOLSA S.A.
发明人： Berenguer, Antonio Alvarez , Casal, Blanca , Frippiat, J.J. , Castells, Rafael Perez , Hitzky, Eduardo Ruiz , Rome, Julio Santaren
IPC分类号： C01B33/22 , C01B33/28
CPC分类号： C01B33/44
摘要： Process for manufacturing organophilic fibrous clays useful as thickening and suspending agents in low-polarity solvents from Sepiolite or Palygorskite, the rheological characteristics of which were previously built up, which comprises the following steps:
(a) mixing the fibrous clays having a rheological grade with a quaternary ammonium salt of the general formula:
wherein R₁, R₂, R₃, R₄ and R₅ are saturated or unsaturated aryl, alkylaryl or alkyl hydrocarbon radicals of from 1 to 22 carbon atoms, which can be substituted with hydroxyl groups; the amount of ammonium salt incorporated being such that when the modified fibrous clays are dispersed in water, the amount of quaternary ammonium salt whereby it is equilibrated must be of 0.01 to 10 times the critical micellar concentration of the quaternary ammonium salt;
b) drying at a temperature below 100°C to a moisture lower than 20%; and
c) grinding to a granulometry of less than 74 µ.
摘要翻译：用于制造亲水性纤维状粘土的方法，其可用作来自海泡石或坡缕石的低极性溶剂中的增稠剂和悬浮剂，其流变特性预先被建立，其包括以下步骤：（a）将具有流变级的纤维状粘土与具有以下通式的季铵盐：其中R 1，R 2，R 3，R 4和R 5是可被羟基取代的饱和或不饱和的芳基，烷基芳基或具有1至22个碳原子的烷基烃基; 掺入的铵盐的量使得当改性纤维状粘土分散在水中时，其平衡的季铵盐的量必须为季铵盐的临界胶束浓度的0.01至10倍; b）在低于100℃的温度下干燥至低于20％的水分; 和c）研磨至少于74亩的粒度。米

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