The present invention relates to a cationic aminopyridine of general formula (I), acid-addition salts thereof and solvates thereof: in which: R1 is a linear or branched, saturated C1 -C20 alkyl radical, substituted and/or interrupted with a cationic radical. The present invention is also directed towards a process for synthesizing this cationic aminopyridine, compositions, uses, hair dyeing processes and devices using this cationic aminopyridine.
                            本发明涉及一种带有阳离子基团的
氨基吡啶,其一般式为(I),其酸加成盐和溶剂化物:其中:R1是一种线性或支链的饱和的C1-C20烷基基团,带有一个阳离子基团的取代和/或中断。本发明还涉及一种合成该阳离子
氨基吡啶的方法、组合物、用途、染发过程和使用该阳离子
氨基吡啶的装置。