发明授权
EP0526856B1 Crystal modifications of 2-m-toluidino-3-methyl-6-di-n-butylaminofluoran, process for preparing thereof, and recording materials containing said crystal modifications 失效
晶体变记录2-间 - 甲苯氨基-3-甲基-6-二正butylaminofluoran的材料,它们的制备方法和含有这些晶体变

Crystal modifications of 2-m-toluidino-3-methyl-6-di-n-butylaminofluoran, process for preparing thereof, and recording materials containing said crystal modifications
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