申请人:BASF Aktiengesellschaft
公开号:US05338639A1
公开(公告)日:1994-08-16
Electrostatic toners contain a polymeric binder and, as a charge stabilizer, a compound of the formula ##STR1## where Z is C.sub.1 -C.sub.20 -alkyl which is unsubstituted or substituted by phenyl or Z is C.sub.5 -C.sub.7 -cycloalkyl or unsubstituted or substituted phenyl, X and Y are each cyano or a radical of the formula --CO--OR.sup.1, --CO--NR.sup.1 R.sup.2 or --C--R.sup.3, where R.sup.2 is C.sub.1 -C.sub.20 -alkyl which is unsubstituted or substituted by phenyl or R.sup.1 is C.sub.5 -C.sub.7 -cycloalkyl, R.sup.2 is hydrogen or C.sub.1 -C.sub.4 -alkyl and R.sup.3 is C.sub.1 -C.sub.20 -alkyl which is unsubstituted or substituted by phenyl or R.sup.3 is C.sub.5 -C.sub.7 -cycloalkyl or unsubstituted or substituted phenyl, or X and Y together form a radical of the formula --CO--L--CO-- or --CO--CH.dbd.C(CH.sub.3)--O--CO--, where L is C.sub.2 -C.sub.4 -alkylene, and cat.sup..sym. is one equivalent of a cation.
静电复印粉末包含聚合物粘合剂和化合物,其化学式为##STR1##其中Z是C.sub.1-C.sub.20-烷基,未取代或被苯基取代,或者Z是C.sub.5-C.sub.7-环烷基或未取代或被苯基取代,X和Y分别是氰基或化学式- CO-OR.sup.1,-CO-NR.sup.1R.sup.2或-C-R.sup.3的基团,其中R.sup.2是未取代或被苯基取代的C.sub.1-C.sub.20-烷基或R.sup.1是C.sub.5-C.sub.7-环烷基,R.sup.2是氢或C.sub.1-C.sub.4-烷基,R.sup.3是未取代或被苯基取代的C.sub.1-C.sub.20-烷基或R.sup.3是C.sub.5-C.sub.7-环烷基或未取代或被苯基取代,或X和Y一起形成化学式- CO-L-CO-或-CO-CH.dbd.C(CH.sub.3)-O-CO-的基团,其中L是C.sub.2-C.sub.4-烷基,cat.sup..sym.是一个阳离子当量。