B - Operations – Transporting – 41 – M
Patent
B - Operations, Transporting
41
M
B41M 5/165 (2006.01) B41M 5/132 (2006.01) B41M 5/136 (2006.01) C07C 257/22 (2006.01)
Patent
CA 2073807
ABSTRACT OF THE DISCLOSURE This invention relates to improved imaging systems based on the formation of yellow colored coordination compounds of transition metals with certain ligands. The formation of colored coordination compounds can be employed to generate images and is important in the manufacture anqueous pressure sensitive transfer papers for preparing carbonless copies. In particular, this invention relates to certain ethanediimidic acid bis[(arylalkylidene)hydrazide] compounds, and particularly to certain ethanedilmidic acid bis[(o-hydroxyarylalkylidene)hydrazide) compounds, to their coordination compounds with certain transition metals, and to their use in pressure sensitive carbonless copy paper systems. These compounds have been found to provide excellent yellow colors when used in pressure sensitive carbonless copy-papers wherein the image is formed by the reaction of a color-forming compound with transition metal salts such as those of nickel, cobalt, iron, copper, and similar materials. These yellow color-formers have the advantage of greater solubility in encapsulation solvents and lower volatility than previously used yellow color-formers. The invention also concerns the admixture of these certain color-formers with N-(monosubstituted)- dithiooxamides and/or N,N'- (disubstituted)dithiooxamides to form images of various colors and preferably black images during the application of appropriate pressure to pressure sensitive imaging constructions such at carbonless paper constructions. MAL/wp/FN44790.FOR
Minnesota Mining And Manufacturing Company
Smart & Biggar
LandOfFree
Ethanediimidic acid bis¬(arylalkylidene)hydrazide| does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ethanediimidic acid bis¬(arylalkylidene)hydrazide|, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ethanediimidic acid bis¬(arylalkylidene)hydrazide| will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1899087