申请人:Bayer Aktiengesellschaft
公开号:US05097034A1
公开(公告)日:1992-03-17
Color formers of the formula ##STR1## in which X.sup.1 denotes hydroxyl, alkoxy, alkenyloxy, aralkoxy, cycloalkoxy, aryloxy or acyloxy, R.sup.1 denotes hydrogen, halogen, alkyl or alkoxy, R.sup.2 denotes hydrogen, alkoxy, aralkoxy, aryloxy or a radical of the formula ##STR2## Y.sup.1 and Y.sup.2, independently of one another, denote alkyl, cycloalkyl or aralkyl, R.sup.2 can form a heterocyclic ring with A in the o-position, in which a benzene ring can be additionally fused onto ring A in the o-/m-position with respect to R.sup.2, R.sup.3 denotes hydrogen, alkyl, alkenyl, aralkyl, cycloalkyl or aryl, or R.sup.3 is linked to ring B in the o-position with respect to the nitrogen, Z.sup.1 stands for the remaining members of a partially hydrogenated or completely hydrogenated ring, with the proviso that Z.sup.1 does not stand for ##STR3## if the dialkylmethyl group is linked to the nitrogen atom, rings A and B and also the cyclic and acyclic radicals can carry further nonionic substituents, find use in thermoreactive papers and pressure-sensitive recording materials.
公式为##STR1##的颜色形成剂,其中X.sup.1表示羟基,烷氧基,烯基氧基,芳基烷氧基,环烷氧基,芳基氧基或酰氧基,R.sup.1表示氢,卤素,烷基或烷氧基,R.sup.2表示氢,烷氧基,芳基烷氧基,芳基氧基或公式##STR2##的基团,Y.sup.1和Y.sup.2独立地表示烷基,环烷基或芳基烷基,R.sup.2可以与A在o-位形成杂环环,在o-/m-位相对于R.sup.2,苯环可以附加在环A上,R.sup.3表示氢,烷基,烯基,芳基烷基,环烷基或芳基,或R.sup.3与环B在氮原子的o-位连接,Z.sup.1表示部分氢化或完全氢化环的剩余成员,但前提是如果二烷基甲基基团连接到氮原子,则Z.sup.1不表示##STR3##,环A和B以及环状和非环状基团可以携带进一步的非离子取代基,在热反应纸和压敏记录材料中使用。