The reaction between arylazo p-tolyl sulfones la-f (Ar-N=N-SO2p-Tol) and the potassium salts of some active-methylene compounds (CH2XY: X, Y = CN, COOEt) represents an example of unprecedented behaviour of azosulfones and effectively leads, depending on the nucleophile, to either unsymmetrical (6–8) or symmetrical (9) tetrasubstituted ethylenes. Of particular interest is the possibility to synthesize
芳基偶氮对甲苯基砜la-f(Ar-N = N-SO 2 p - Tol)与某些活性亚甲基化合物(CH2XY:X,Y = CN,COOEt)的钾盐之间的反应代表了前所未有的例子偶氮砜的行为,并根据亲核试剂有效地导致不对称(6-8)或对称(9)四取代的乙烯。特别令人感兴趣的是,可以在高收率和温和条件下合成极性乙烯lArNHCX = CXY:X = Y = CN(6)或X = COOEt,Y = CN(7)],其中有些不容易获得。实验证据支持了涉及连续缩合过程的机理。
Mixture of dyes for black dye donor for thermal color proofing
申请人:EASTMAN KODAK COMPANY
公开号:EP0532006A1
公开(公告)日:1993-03-17
A black dye-donor element for thermal dye transfer comprising a support having thereon a dye layer comprising a mixture of at least one cyan, magenta and yellow dyes dispersed in a polymeric binder, at least one of the cyan dyes having the formula:
and at least one of the yellow dyes having the formula:
and at least one of the magenta dyes having the formula:
Black colored dye mixture for use according to thermal dye sublimation transfer
申请人:AGFA-GEVAERT
naamloze vennootschap
公开号:EP0579299A1
公开(公告)日:1994-01-19
Black colored dye mixture for use in thermal dye sublimation transfer composed of at least four dyes and comprising two dyes having absorption maxima in the spectral range between 470 and 600 nm that are at least 30 nm apart from each other.
Dye-donor element comprising magenta tricyanovinylaniline dyes
申请人:AGFA-GEVAERT
naamloze vennootschap
公开号:EP0594239A1
公开(公告)日:1994-04-27
An assemblage for use in thermal dye transfer printing comprising a dye donor element and a receiving element containing a dye receiving layer comprising a polyvinylchloride, said dye donor element comprising a support having thereon a dye lyer comprising a binder and a magenta N-aryl-N-alkyl-substituted tricyanovinylaniline dye, wherein the N-aryl group either carries an electron-donative group having a negative Hammett sigma para value, or carries 2 to 5 substituents, which may be same or different and have Hammett sigma para values, the sum of which is negative.
一种用于热染料转移印花的组合物,包括一个染料供体元件和一个接收元件,接收元件含有一个染料接收层,染料接收层由聚氯乙烯组成,所述染料供体元件包括一个支撑体,支撑体上有一个染料赖尔,染料赖尔包括粘合剂和品红色的N-芳基-N-烷基取代的三氰基乙烯基苯胺染料、其中,N-芳基带有一个具有负 Hammett sigma para 值的电子疏导基团,或带有 2 至 5 个取代基,这些取代基可以相同或不同,并具有 Hammett sigma para 值,其总和为负值。
Dye-donor element comprising dicyanovinylaniline dyes
申请人:AGFA-GEVAERT
naamloze vennootschap
公开号:EP0598437A1
公开(公告)日:1994-05-25
Dye-donor element for use according to thermal dye transfer methods, said element comprising a dye layer comprising at least one dicyanovinylaniline dye, wherein the amino group of the aniline function of said dye carries an aryl group not being substituted with a dicyanovinyl group and a hydrocarbon or substituted hydrocarbon group linked by a secondary carbon atom to said amino group. The dyes have very good light-fastness and good spectral absorption characteristics.