申请人:Minnesota Mining and Manufacturing Company
公开号:US04189429A1
公开(公告)日:1980-02-19
Volatile, hydrolyzable silyl-substituted dyestuffs are used in transfer sheets which, by heating, transfer an image to a substrate. The image has high optical density and resistance to diffusion in high temperature environments. The dyestuffs are of the formula ##STR1## wherein A is a dyestuff nucleus selected from anthraquinone, naphthoquinone, phenylazophenyl or styryl, which nucleus is substituted by R and may be substituted by auxochromic or bathochromic groups, R is H, alkyl of 1 to 6 carbon atoms, phenyl or Q, and at least one R is Q, Q is --R.sup.1 --W--Si(R.sup.2).sub.3, R.sup.1 is a divalent aliphatic group of 2 to 10 carbon atoms, W is 0, S or NR.sup.3, R.sup.3 is H, alkyl of 1 to 6 carbon atoms or phenyl and each R.sup.2 is individually the same or different selected from hydrogen, hydrocarbyl, hydrocarbyloxy, chlorohydrocarbyl or bromohydrocarbyl in which the sum of carbons is not greater than 12.
挥发性、可水解的硅基染料用于传递纸张,通过加热将图像转移到基底上。该图像具有高光学密度和抵抗高温环境中扩散的特性。这些染料的化学式为##STR1##其中,A是从蒽醌、萘醌、苯基偶氮苯或苯乙烯中选择的染料核,该核被R取代,且可被辅色基或巴色基团取代,R是H、1至6个碳原子的烷基、苯基或Q,至少一个R是Q,Q是--R.sup.1 --W--Si(R.sup.2).sub.3,R.sup.1是2至10个碳原子的二价脂肪族基,W是0、S或NR.sup.3,R.sup.3是H、1至6个碳原子的烷基或苯基,每个R.sup.2分别选择自氢、烃基、烃氧基、氯代烃基或溴代烃基,其中碳原子总数不大于12。