Coloring method and color-forming material
AssigneeAsahi Kasei Kogyo Kabushiki Kaisha
InventorsKazuo Kabashima, Kyugo Tanaka
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Abstract
Disclosed is a method for coloring an article to be colored, which comprises contacting and reacting, in the article to be colored, (a) at least one aromatically bonded isocyanate compound with (b) at least imino compound being capable of forming a color by the reaction with the isocyanate compound and having at least one>C.dbd.NH group to effect the color formation, and a color-forming material comprising the compounds (a) and (b), at least one of which is supported on an article to be colored. A color or colored image formed by the reaction between the compounds (a) and (b) is excellent in chemical and light resistance.
Claims31
A method for coloring an article to be colored, which comprises contacting and reacting, in the article to be colored, (a) at least one aromatically bonded isocyanate compound with (b) at least one imino compound being capable of forming a color by the reaction with said isocyanate compound and having at least one >C.dbd.NH group to effect the color formation, wherein at least one of said compounds (a) and (b) is supported on the article to be colored.
A heat-sensitive coloration method which comprises contacting and reacting under heating, in an article to be colored, (a) at least one aromatically bonded isocyanate compound with (b) at least one imino compound being capable of forming a color by the reaction with said isocyanate compound and having at least one >C.dbd.NH group to form a colored image, wherein at least one of said compounds (a) and (b) is supported on the article to be colored.
A color-forming material for effecting the color formation by contacting and reacting (a) at least one aromatically bonded isocyanate compound with (b) at least one imino compound being capable of forming a color by the reaction with said isocyanate compound and having at least one C.dbd.NH group, wherein at least one of said compounds (a) and (b) is supported on an article to be colored.
Dependencies are inferred from the claim text.