Dyes containing polyhydroxyl groups for ink-jet printing inks

Details Dyes containing polyhydroxyl groups for ink-jet printing inks Dyes containing polyhydroxyl groups for ink-jet printing inks

C - Chemistry, Metallurgy

09

B

260/228, 6/27, 2

C09B 1/16 (2006.01) C09B 29/36 (2006.01) C09D 11/00 (2006.01) C09D 11/02 (2006.01)

Patent

CA 1293971

ABSTRACT OF THE DISCLOSURE A dye used in ink compositions for ink jet print- ing comprises an aromatic dye molecule having attached to the backbone thereof from one to four polyhydroxyl- substituted groups having the formula selected from the group consisting of: (a) CH2OH-(CHOH)nCH2O-, where n = 2 to 10; (b) On-1CnH2n-1-O-, where n = 5 to 7; and (c) C6nH5n+1O5n -O-, where n = 1 to about 100. These dyes have improved water solubility and improved interaction with paper.

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