C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 11/00 (2006.01) B43K 5/00 (2006.01) B43K 7/00 (2006.01) C09B 11/12 (2006.01) C09B 69/06 (2006.01) C09D 11/16 (2006.01) C09D 11/18 (2006.01)
Patent
CA 2391992
An ink composition comprising at least one triarylmethane-based dye as a coloring material, an alcohol having 2 or more carbon atoms, a polyhydric alcohol or a glycol ether as a solvent, and a resin which can dissolve in the solvent, the triarylmethane-based dye comprising a compound represented by the following formula: [C(-Ar-Y)3]A wherein each Ar is independently an aryl group substituted, or not substituted, by a halogen or an alkyl group, each Y is independently a diethylamino group or hydrogen, provided that at least two Y are a diethylamino group, A is a halogen or an organic acid group, and A is charge-balanced to the residue.
L'invention concerne une composition d'encre comprenant un colorant constitué par au moins un colorant de triarylméthane de formule générale [C(-Ar-Y)3]. Dans cette formule, les Ar sont chacun indépendamment aryle pouvant être substitué par halogéno ou alkyle, les Y sont chacun indépendamment diéthylamino ou hydrogène, au moins deux d'entre eux étant diéthylamino, et A est halogéno ou un groupe d'acide organique, l'ensemble étant équilibré par une charge opposée au résidu. Ladite composition comprend également un solvant choisi parmi des alcools renfermant au moins deux atomes de carbone, des polyols et des éthers glycoliques, ainsi qu'une résine soluble dans ce solvant.
Ichikawa Shuuji
Ikai Takayuki
Goudreau Gage Dubuc
Mitsubishi Pencil Co. Ltd.
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