| 摘要 |
The present invention relates to granular, coated N-alkylammoniumacetonitrile salts of the formula (I) R2R3NR1-CR4R5-CN+Y- (I) in which R1 is a C1-C24-alkyl group which may be interrupted by nonadjacent oxygen atoms or may additionally carry hydroxyl groups, a C4-C24-cycloalkyl group, a C7-C24-alkaryl group or a group of the formula -CR4R5-CN, R2 and R3 in each case independently of one another have the meaning of R1 or together are a saturated four- to nine-membered ring having at least one carbon atom and at least one further heteroatom from the group consisting of oxygen, sulfur and nitrogen, R4 and R5 in each case independently of one another are hydrogen, a C1-C24-alkyl group which may be interrupted by nonadjacent oxygen atoms or may additionally carry hydroxyl groups, a C4-C24-cycloalkyl group or a C7-C24-alkaryl group and Y is a sulfate or hydrogensulfate anion in the corresponding stoichiometric amount, which are coated with a material which is chosen from the group consisting of organic, inorganic, hydrophilic and hydrophobic substances.
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