US6150433A
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US
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Ink-jet ink compositions containing modified macromolecular chromophores with covalently attached polymers
Assignee: Hewlett Packard Development Co LP
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Filing: 1998-07-31
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Granted: 2000-11-21
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Expires: 2018-07-31
Abstract
Abstract The present invention relates to ink-jet ink compositions that comprise modified pigment particles (macromolecular chromophores) having functional groups covalently attached for water solubility and polymer chains covalently attached to the pigments. These pigmented inks have enhanced smearfastness, enhanced print quality, improved bleed control, and improved resistance to water when applied to the media. Moreover, these inks have good viscosity and surface tension. These inks are useful in ink-jet printing, including thermal ink jet printing, piezoelectric ink jet printing, and continuous ink jet printing.
Inventors
- 👤 Joseph W. Tsang
- 👤 John R. Moffatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:04
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
106 words
An ink-jet ink composition comprising a macromolecular chromophore, said macromolecular chromophore comprises: a) at least one water-solublizing functional group; and b) at least one covalently attached polymer, wherein said polymer is covalently attached to said macromolecular chromophore through a polyolefinic group having the structure: R"--CR═C(H)R' wherein R can be H or methyl, R' can be H or an alkyl or aryl having from about 1 to about 10 carbons and R" can be any alkyl, alkenyl, aryl groups having from about 1 to 20 carbons and, optionally, heteroatoms; and wherein said polymer is obtained from monomers selected from the group consisting of: ##STR7## and mixtures thereof.
Claim 2
Dependent Claim
106 words
An ink-jet ink composition comprising a macromolecular chromophore, said macromolecular chromophore comprises: a) at least one water-solublizing functional group; and b) at least one covalently attached polymer, wherein said polymer is covalently attached to said macromolecular chromophore through a polyolefinic group having the structure: R"--CR═C(H)R' wherein R can be H or methyl, R' can be H or an alkyl or aryl having from about 1 to about 10 carbons and R" can be any alkyl, alkenyl, aryl groups having from about 1 to 20 carbons and, optionally, heteroatoms; and wherein said polymer is obtained from monomers selected from the group consisting of: ##STR7## and mixtures thereof.
Claim 3
Dependent Claim
33 words
An ink composition according to claim 1 wherein said water-solubilizing functional groups are aromatic groups having attached ionizable groups selected from the group consisting carboxylate, sulfonate, ammonium, quaternary ammonium, phosphonium, and mixtures thereof.
Claim 4
Dependent Claim
29 words
An ink composition according to claim 1 wherein said water-soluble functional groups and said polyolefinic groups comprise from about 0.001 mmol/g to about 10 mmol/g of said macromolecular chromophore.
Claim 5
Dependent Claim
25 words
An ink composition according to claim 1 wherein said polyolefinic group is selected from the group consisting vinyl, acrylate, methacrylate, acrylamide, methacrylamide, and mixture thereof.
Claim 6
Dependent Claim
71 words
An ink composition for use in ink-jet printing according to claim 1 comprising: a) from about 0.001% to about 10 wt % of said macromolecular chromophore; b) from about 0.01% to about 50 wt % of one or more cosolvents; c) from 0% to about 40 wt % of one or more water-soluble surfactants/amphiphiles; and d) from 0% to about 3 wt % of one or more high molecular weight colloid.
Claim 7
Dependent Claim
33 words
An ink composition according to claim 5 wherein said water-solubilizing functional groups are aromatic groups having attached ionizable groups selected from the group consisting carboxylate, sulfonate, ammonium, quaternary ammonium, phosphonium, and mixtures thereof.
Claim 8
Dependent Claim
29 words
An ink composition according to claim 5 wherein said water-soluble functional groups and said polyolefinic groups comprise from about 0.001 mmol/g to about 10 mmol/g of said macromolecular chromophore.
Claim 9
Dependent Claim
25 words
An ink composition according to claim 5 wherein said polyolefinic group is selected from the group consisting vinyl, acrylate, methacrylate, acrylamide, methacrylamide, and mixture thereof.
Claim 10
Dependent Claim
21 words
An ink composition according to claim 5 wherein said ink composition has a pH of from about 8 to about 10.
Claim 11
Independent Claim
117 words
A method of ink-jet printing comprising printing on a medium an ink-jet ink composition comprising a macromolecular chromophore, wherein said macromolecular chromophore comprises: a) at least one water-solublizing functional group; and b) at least one covalently attached polymer, wherein said polymer is covalently attached to said macromolecular chromophore through a polyolefinic group having the structure: R"--CR═C(H)R' wherein R can be H or methyl, R' can be H or an alkyl or aryl having from about 1 to about 10 carbons and R" can be any alkyl, alkenyl, aryl groups having from about 1 to 20 carbons and, optionally, heteroatoms; and wherein said polymer is obtained from monomers selected from the group consisting of: ##STR8## and mixtures thereof.
Claim 12
Independent Claim
117 words
A method of ink-jet printing comprising printing on a medium an ink-jet ink composition comprising a macromolecular chromophore, wherein said macromolecular chromophore comprises: a) at least one water-solublizing functional group; and b) at least one covalently attached polymer, wherein said polymer is covalently attached to said macromolecular chromophore through a polyolefinic group having the structure: R"--CR═C(H)R' wherein R can be H or methyl, R' can be H or an alkyl or aryl having from about 1 to about 10 carbons and R" can be any alkyl, alkenyl, aryl groups having from about 1 to 20 carbons and, optionally, heteroatoms; and wherein said polymer is obtained from monomers selected from the group consisting of: ##STR8## and mixtures thereof.
Claim 13
Dependent Claim
35 words
A method of ink-jet printing according to claim 10 wherein said water-solubilizing functional groups are aromatic groups having attached ionizable groups selected from the group consisting carboxylate, sulfonate, ammonium, quaternary ammonium, phosphonium, and mixtures thereof.
Claim 14
Dependent Claim
31 words
A method of ink-jet printing according to claim 10 wherein said water-soluble functional groups and said polyolefinic groups comprise from about 0.001 mmol/g to about 10 mmol/g of said macromolecular chromophore.
Claim 15
Dependent Claim
28 words
A method of ink-jet printing according to claim 10 wherein said polyolefinic group is selected from the group consisting of vinyl, acrylate, methacrylate, acrylamide, methacrylamide, and mixture thereof.
Claim 16
Dependent Claim
76 words
A method of ink-jet printing according to claim 10 comprising printing on a medium an ink composition comprising: a) from about 0.001% to about 10 wt % of said macromolecular chromophore; b) from about 0.01% to about 50 wt % of one or more cosolvents; c) from 0% to about 40 wt % of one or more water-soluble surfactants/amphiphiles; and d) from 0% to about 3 wt % of one or more high molecular weight colloid.
Claim 17
Dependent Claim
32 words
A method according to claim 14 wherein said water-solubilizing functional groups are aromatic groups having attached ionizable groups selected from the group consisting carboxylate, sulfonate, ammonium, quaternary ammonium, phosphonium, and mixtures thereof.
Claim 18
Dependent Claim
28 words
A method according to claim 14 wherein said water-soluble functional groups and said polyolefinic groups comprise from about 0.001 mmol/g to about 10 mmol/g of said macromolecular chromophore.
Claim 19
Dependent Claim
24 words
A method according to claim 14 wherein said polyolefinic group is selected from the group consisting vinyl, acrylate, methacrylate, acrylamide, methacrylamide, and mixture thereof.
Claim 20
Dependent Claim
20 words
A method according to claim 14 wherein said ink composition has a pH of from about 8 to about 10.
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