METHOD OF PREPARING GRANULAR N-ALKYL-AMMONIUM ACETONITRILE SALTS

    公开(公告)号:CA2368481A1

    公开(公告)日:2000-10-05

    申请号:CA2368481

    申请日:2000-03-17

    Applicant: BASF AG

    Abstract: The invention relates to an improved method for the preparation of granular N- alkyl ammonium acetonitrile salts of formula (I) R2R3N+R1-CR4R5-CN Y-in whic h R1 to R5 are hydrogen or organic rests and Y- is a sulfate or hydrogen sulfa te anion; from an aqueous solution of the compound of formula (II) R2R3N+R1-CR4 R5- CN R6O-SO2-O- in which R6 is C1 to C4 alkyl. According to the invention the aqueous solution is evaporated at a temperature of between 80 and 250 ~C and a pressure of between 10 mbar and 2 bar so as to obtain a melt and said melt i s then left to solidify. During or after evaporation usual carrier materials and/or auxiliaries can be added. Lastly the resulting solidified compound (I ) is given the desired granular form.

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