Saccharide-alkyleneoxy derivative and ink
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Abstract
A saccharide-alkyleneoxy derivative comprising a compound represented by the following formula (1):
A−(EP)n−OH (1)
wherein A represents a skeleton of a saccharide selected from the group consisting of C3 to C32 aldoses, ketoses and sugar alcohols; EP represents an ethyleneoxy group and/or a propyleneoxy group; and n represents an average number of the repeating units. Also disclosed are a method for producing the saccharide alkyleneoxy derivative, and an ink containing the saccharide-alkyleneoxy derivative.
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Citations
37 Claims
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1-21. -21. (canceled)
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22. Ink containing at least a coloring material, water, and a saccharide-alkyleneoxy derivative comprising a compound represented by the following formula (1):
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A-EP)n-OH
(1)wherein A represents a skeleton of a saccharide selected from the group consisting of C3 to C12 aldoses, ketoses and sugar alcohols;
EP represents an ethyleneoxy group and/or a propyleneoxy group; and
n represents an average number of the repeating units, said ink further containing one or more C3 to C12 saccharides selected from the group consisting of;
aldoses having 6 or fewer carbon atoms, aldoses having from 7 to 12 carbon atoms;
ketoses having 6 or fewer carbon atoms, ketoses having from 7 to 12 carbon atoms;
sugar alcohols having from 6 or fewer carbon atoms, and sugar alcohols having from 7 to 12 carbon atoms, wherein the compound represented by formula (1) is present in the ink in an amount of from 4 to 10% by weight, wherein the ink contains at least one glycol ether selected from the group consisting of 5% to 20% by weight of diethylene glycol monobutyl ether, 5% to 20% by weight of triethylene glycol monobutyl ether, 3% to 10% by weight of dipropylene glycol monobutyl ether and 3.5% to 10% by weight of propylene glycol monobutyl ether, each based on the weight of said ink, wherein the ink also contains 3% to 10% by weight of 1,2-pentanediol or 0.5% to 5% by weight of 1,2-hexanediol, and wherein the coloring material is a water-soluble pigment that is made water-dispersible.- View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 33, 34, 35, 36, 37)
wherein R represents an alkyl group having from 4 to 10 carbon atoms, which may be branched, a cycloalkyl group or a phenyl group;
EP represents an ethyleneoxy group and/or a propyleneoxy group; and
m represents an average number of the repeating units.
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31. The ink according to claim 30, wherein the average number (m) of the repeating units in the substance represented by said formula (2) is from 1 to 10 and, when propyleneoxy groups represented by EP exist, the average number of repeating units of propyleneoxy groups is from 0.5 to 5.
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33. The ink according to claim 22, wherein said pigment is made water dispersible by at least one of surface oxidation and coating with a polymer.
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34. A method for jet recording comprising providing the ink according to claim 22, and ejecting the ink onto a recording medium.
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35. A method for ink jet recording comprising providing the ink according to claim 22 and ejecting said ink from an ink jet recording apparatus having a head which discharges the ink in response to a signal using an electrostrictive device.
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36. The ink according to claim 22, wherein the one or more C3 to C12 saccharides comprise glycerol.
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37. The ink according to claim 22, wherein the one or more C3 to C12 saccharides are present in the ink in an amount of from 3-15 wt %.
Specification