EP0976799A1
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EP
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Ink-jet compositions containing modified macromolecular chromophores with covalently attached polymers
Assignee: HP Inc
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Filing: 1999-07-29
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Granted: —
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Expires: 2019-07-29
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
EP
Data Source
google_patents
Last Synchronized
2026-11-07 23:29
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
22 words
An ink-jet ink composition comprising a macromolecular chromophore
comprising at least one water-solublizing functional group and at least one
covalently attached polymer.
Claim 2
Dependent Claim
92 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; and said 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 1 to 10
carbons and R" can be any alkyl, alkenyl, aryl groups having from 1 to 20 carbons
and, optionally, heteroatoms.
Claim 3
Dependent Claim
27 words
An ink composition according to Claim 2 wherein said water-soluble
functional groups and said polyolefinic groups comprise from 0.001 mmol/g to 10
mmol/g of said macromolecular chromophore.
Claim 4
Dependent Claim
25 words
An ink composition according to Claim 2 wherein said polyolefinic group
is selected from the group consisting vinyl, acrylate, methacrylate, acrylamide,
methacrylamide, and mixture thereof.
Claim 5
Dependent Claim
21 words
An ink composition according to Claim 2 wherein said polymer comprises
monomers selected from the group consisting of and mixtures thereof.
Claim 6
Dependent Claim
21 words
An ink composition according to Claim 5 wherein said polymer comprises
monomers selected from the group consisting of and mixtures thereof.
Claim 7
Dependent Claim
71 words
An ink composition for use in ink-jet printing comprising: a) from 0.001% to 10 wt% of a macromolecular chromophore comprising
at least one water-solublizing functional group and at least one covalently
attached polymer; b) from 0.01% to 50 wt% of one or more cosolvents; c) from 0% to 40 wt% of one or more water-soluble
surfactants/amphiphiles; and d) from 0% to 3 wt% of one or more high molecular weight colloid.
Claim 8
Independent Claim
32 words
A method of ink-jet printing comprising printing on a medium an ink-jet ink
composition comprising a macromolecular chromophore comprising at least one
water-solublizing functional group and at least one covalently attached polymer.
Claim 9
Dependent Claim
116 words
A method of ink-jet printing according to Claim 8 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, and 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 1 to 10
carbons and R" can be any alkyl, alkenyl, aryl groups having from 1 to 20 carbons
and, optionally, heteroatoms; and further wherein said water-soluble functional
groups and said polyolefinic groups comprise from 0.001 mmol/g to 10 mmol/g of
said macromolecular chromophore.
Claim 10
Dependent Claim
28 words
A method of ink-jet printing according to Claim 9 wherein said
polyolefinic group is selected from the group consisting of vinyl, acrylate,
methacrylate, acrylamide, methacrylamide, and mixture thereof.
Claim 11
Dependent Claim
20 words
A method according to Claim 9 wherein said polymer comprises
monomers selected from the group consisting of and mixtures thereof.
Claim 12
Dependent Claim
20 words
A method according to Claim 9 wherein said polymers comprises
monomers selected from the group consisting of and mixtures thereof.
References Cited (Backward Citations)
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