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    • 22. 发明授权
    • Desensitizer compositions
    • 脱敏剂组合物
    • US4411699A
    • 1983-10-25
    • US311812
    • 1981-10-16
    • Ken IwakuraNobuyoshi SekikawaAkio Miyamoto
    • Ken IwakuraNobuyoshi SekikawaAkio Miyamoto
    • B41M5/128C09D11/00
    • B41M5/128
    • A desensitizer composition containing the amidine derivative shown by following general formula can be effectively used for partially desensitizing a developer sheet of pressure-sensitive copying papers using diphenylamine series color formers: ##STR1## wherein R.sub.1 is a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, or an aryl group having 6 to 20 carbon atoms; R.sub.2 is a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an amino group, or an alkylthio group having 1 to 20 carbon atoms; and n is an integer of 2 to 6; said R.sub.1 and R.sub.2 may have a substituent and when both R.sub.1 and R.sub.2 are an alkyl group, at least one of R.sub.1 and R.sub.2 is an alkyl group having a substituent.
    • 含有下述通式所示的脒衍生物的脱敏剂组合物可以有效地用于使用二苯胺系列着色剂对压敏复印纸的显影片进行部分脱敏:其中R1是氢原子,具有1〜 20个碳原子,或具有6〜20个碳原子的芳基; R2是氢原子,碳原子数1〜20的烷基,碳原子数6〜20的芳基,氨基或碳原子数1〜20的烷硫基。 n为2〜6的整数。 所述R 1和R 2可以具有取代基,并且当R 1和R 2都是烷基时,R 1和R 2中的至少一个是具有取代基的烷基。