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    • 83. 发明授权
    • 2'-(4,6-Disubstituted)-s-triazin-2-yl)amino-6'-dialkylamino flurans
    • 2 {40-(4,6-二取代)-s-三嗪-2-基)氨基-6(40-二烷基氨基呋喃)
    • US4028357A
    • 1977-06-07
    • US600773
    • 1975-07-31
    • Nathan Norman Crounse
    • Nathan Norman Crounse
    • B41M5/145B41M5/327C07D493/10C09B11/28C09B62/04C07D251/44C07D251/50C07D251/70
    • B41M5/3275B41M5/1455C07D493/10
    • Fluorans useful as color precursors, particularly in the art of carbonless duplicating are normally colorless and are represented by the structural formula ##STR1## wherein R represents non-tertiary alkyl of one to four carbon atoms; R.sup.1 and R.sup.2 represent hydrogen or non-tertiary alkyl of one to four carbon atoms; R.sup.3 and R.sup.4 represent chlorine, NH.sub.2 or one of the groups --NR.sup.5 -(lower-alkylene)-N(R.sup.6)(R.sup.7), --NR.sup.5 -(lower-alkylene-N(R.sup.8)(R.sup.9)(R.sup.10) An, -NR.sup.5 -(lower-alkylene)-OH, -NR.sup.5 -(lower-alkylene) ##STR2## --NR.sup.5 -(HSO.sub.3 -C.sub.6 H.sub.4) or --O-(lower-alkylene)-N(R.sup.8)(R.sup.9) in which R.sup.5, R.sup.6 and R.sup.7 represent hydrogen or non-tertiary alkyl of one to four carbon atoms; R.sup.8 and R.sup.9 represent non-tertiary alkyl of one to four carbon atoms; R.sup.10 represents non-tertiary alkyl of one to four carbon atoms, benzyl or benzyl substituted in the benzene ring by one or two of halo or alkyl of one to three carbon atoms; and An represents an anion.
    • 可用作彩色前体的颜料,特别是在无碳复制领域中通常是无色的,并且由结构式表示:其中R表示1-4个碳原子的非叔烷基; R1和R2表示1-4个碳原子的氢或非叔烷基; R 3和R 4表示氯,NH 2或-NR 5 - (低级亚烷基)-N(R 6)(R 7),-NR 5 - (低级亚烷基-N(R 8)(R 9)(R 10) NR5-(低级亚烷基)-OH,-NR5-(低级亚烷基)-NR5-(HSO3-C6H4)或-O-(低级亚烷基)-N(R8)(R9) R6和R7表示1-4个碳原子的氢或非叔烷基; R8和R9代表1-4个碳原子的非叔烷基; R10表示1-4个碳原子的非叔烷基,苄基或苄基被取代在 苯环中有一个或两个卤素或一至三个碳原子的烷基; An代表阴离子。