Ink compositions comprising modified colored pigments and methods for preparing the same
AssigneeCabot Corporation
InventorYuan Yu
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Abstract
The present invention describes an ink composition comprising a liquid vehicle and a modified colored pigment. The modified colored pigment comprises the product of a colored pigment having at least one leaving group and a treating agent. The modified colored pigments are also disclosed, as are processes for producing them.
Claims84
An ink composition comprising a liquid vehicle and a modified colored pigment, wherein the modified colored pigment comprises the product of:
- a) a colored pigment having at least one leaving group, wherein the leaving group is selected from the group consisting of:
- halogens, substituted or unsubstituted alkyl or aryl sulfonates, substituted or unsubstituted acylates, substituted or unsubstituted benzoates, and mixtures thereof;
- and
- b) a treating agent having the formula B-R-Q, wherein B is a nucleophilic group, R is an alkylene or arylene group, and Q is an ionic or ionizable group.
An ink composition comprising a liquid vehicle and a modified colored pigment, wherein the modified colored pigment comprises the product of:
- a) a colored pigment having at least one leaving group, wherein the leaving group is selected from the group consisting of:
- halogens, substituted or unsubstituted alkyl or aryl sulfonates, substituted or unsubstituted acylates, substituted or unsubstituted benzoates, and mixtures thereof;
- and
- b) a treating agent having the formula B-R-AO, wherein B is a nucleophilic group, R is a bond, an alkylene group, or an arylene group, and AO is an alkylene oxide group.
An ink composition comprising a liquid vehicle and a modified colored pigment, wherein the modified colored pigment comprises the product of:
- a) a colored pigment having at least one leaving group;
- and
- b) a sulfite treating agent.
A modified colored pigment comprising the product of:
- a) a colored pigment having at least one leaving group, wherein the leaving group is selected from the group consisting of:
- halogens, substituted or unsubstituted alkyl or aryl sulfonates, substituted or unsubstituted acylates, substituted or unsubstituted benzoates, and mixtures thereof;
- and
- b) a treating agent having the formula B-R-Q, wherein B is a nucleophilic group, R is an alkylene or arylene group, and Q is an ionic or ionizable group.
A modified colored pigment comprising the product of:
- a) a colored pigment having at least one leaving group, wherein the leaving group is selected from the group consisting of:
- halogens, substituted or unsubstituted alkyl or aryl sulfonates, substituted or unsubstituted acylates, substituted or unsubstituted benzoates, and mixtures thereof;
- and
- b) a treating agent having the formula B-R-AO, wherein B is a nucleophilic group, R is a bond, an alkylene group, or an arylene group, and AO is an alkylene oxide group.
A modified colored pigment comprising the product of:
- a) a colored pigment having at least one leaving group;
- and
- b) a sulfite treating agent.
A process for preparing a modified colored pigment comprising the steps of:
- a) combining, in any order, a colored pigment having at least one leaving group, a treating agent having at least one nucleophilic group, a solvent A, and a solvent B, wherein solvent A is a non-solvent for the colored pigment and wherein solvent B is a solvent for the colored pigment;
- and
- b) heating for a time and to a temperature sufficient to produce a modified colored pigment.
A process for preparing a modified colored pigment comprising the steps of:
- a) combining, in any order, a colored pigment having at least one leaving group, a sulfite treating agent, and a solvent A, wherein solvent A is a non-solvent for the colored pigment, and
- b) heating for a time and to a temperature sufficient to produce a modified colored pigment.
Dependencies are inferred from the claim text.