| abstract |
The present invention relates to granular, coated N-alkylammonium acetonitrile salts of the general formula (I) DOLLAR AR · 2 · R · 3 · NR · 1 · -CR · 4 · R · 5 · -CN · + · Y · - · DOLLAR A in the DOLLAR AR · 1 · a C¶1¶ to C¶24¶ alkyl group which can be interrupted by non-adjacent oxygen atoms or which can additionally carry hydroxyl groups, a C¶4¶ to C¶2¶ cycloalkyl group , a C¶7¶ to C¶24¶ alkaryl group or a grouping of the formula -CR · 4 · R · 5 · -CN, DOLLAR AR · 2 · and R · 3 · each independently mean the meaning of R · 1 · or together represent a saturated four- to nine-membered ring with at least one C atom and at least one further heteroatom from the group consisting of oxygen, sulfur and nitrogen, DOLLAR AR · 4 · and R · 5 · each independently of one another hydrogen, a C ¶1¶ to C¶24¶ alkyl group, which are interrupted by non-adjacent oxygen atoms or additional hydroxyl group en can mean a C¶4¶ to C¶24¶ cycloalkyl group or a C¶7¶ to C¶24¶ alkaryl group and DOLLAR AY represents a sulfate or bisulfate anion of the corresponding stoichiometric amount are coated with a material which is selected from the group consisting of organic, inorganic, hydrophilic or hydrophobic substances. |