| 摘要 |
1. Method for the production of tertiary sulphonium montmorillonites by the reaction of montmorillonite with tertiary sulphonium salts in an aqueous medium, characterized in that a tertiary sulphonium salt of the general formula (I) see diagramm : EP0079972,P8,F2 is used, in which X**- is the alkylsulphate anion see diagramm : EP0079972,P8,F3 or, if R3 is = HOOC-CH2 -, also the chloride anion, R1 is a straight chain or branched alkyl group with 8 to 24 carbon atoms, R2 is an alkyl group with 1 to 24 carbon atoms, which may also be branched from C8 , R3 is a lower alkyl radical with 1 to 4 carbon atoms, a benzyl radical or, if X**- = Cl**- , also the carboxymethyl group, and R4 is a lower alkyl radical with 1 to 4 carbon atoms. |
