申请人:E. I. Du Pont de Nemours and Company
公开号:US04078934A1
公开(公告)日:1978-03-14
Leuco dye compositions containing a compound of the formula: ##STR1## wherein m = 0 or 1: Ar is an arylene or lower alkyl substituted arylene radical; R.sub.1 and R.sub.2, which may be the same or different, are lower alkyl or hydroxyalkyl groups, or ##STR2## R.sub.3 is H, lower alkyl, benzyl, R.sub.4, or ##STR3## R.sub.5 is H, a C.sub.3 -C.sub.6 alkyl group, an aryl group, ##STR4## wherein n=2-6; and R.sub.6 is a lower alkyl group or an aryl group. Where m = 1, the formula represents a colorless leuco compound; where m = 0, the formula represents the yellow dye derivative of the leuco. These compounds are particularly useful in photosensitive compositions.
含有以下化合物的白色染料组合物:##STR1##
其中m = 0或1:Ar是芳基或取代芳基的较低烷基基团;R.sub.1和R.sub.2,可以相同也可以不同,是较低烷基或羟基烷基基团,或##STR2##
R.sub.3是氢,较低烷基,苄基,R.sub.4,或##STR3##
R.sub.5是氢,C.sub.3-C.sub.6烷基,芳基,##STR4##
其中n = 2-6;R.sub.6是较低烷基基团或芳基基团。当m = 1时,该式代表无色白色化合物;当m = 0时,该式代表白色染料衍生物。这些化合物在光敏组合物中特别有用。