US6031019A
Expired / Lapsed
US
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Aqueous ink for ink-jet printing
Assignee: Kao Corp
•
Filing: 1998-02-04
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Granted: 2000-02-29
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Expires: 2018-02-04
Abstract
Abstract Aqueous ink for ink-jet printing comprises an emulsion of fine polymer particles and contains at least one compound selected from an amino acid or a salt thereof and the like.
Inventors
- 👤 Takehiro Tsutsumi
- 👤 Koji Azuma
- 👤 Michitaka Sawada
- 👤 Tadashi Sakuma
- 👤 Kenji Kaida
- 👤 Shigemi Wakabayashi
- 👤 Tetsuya Ueno
- 👤 Kuniyasu Kawabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:22
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C08; C08F; C08F283/00; C08F283/12
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
118 words
An aqueous ink for inkjet printing comprising a polymer emulsion and at least one compound selected from the group consisting of an amino acid or a salt thereof and substantially water-soluble compounds represented by formula (1) and (2): ##STR8## wherein R 1 , R 2 , and R 3 , which may be the same or different, each represent a hydrogen atom, a hydrocarbon group having 1 to 5 carbon atoms or an acyl group which may be substituted by an amino group; R represents an alkylene group having 1 to 5 carbon atoms which may be substituted by a branched group; and M represents a hydrogen atom, an alkali metal atom or an alkaline earth metal atom.
Claim 2
Dependent Claim
118 words
An aqueous ink for inkjet printing comprising a polymer emulsion and at least one compound selected from the group consisting of an amino acid or a salt thereof and substantially water-soluble compounds represented by formula (1) and (2): ##STR8## wherein R 1 , R 2 , and R 3 , which may be the same or different, each represent a hydrogen atom, a hydrocarbon group having 1 to 5 carbon atoms or an acyl group which may be substituted by an amino group; R represents an alkylene group having 1 to 5 carbon atoms which may be substituted by a branched group; and M represents a hydrogen atom, an alkali metal atom or an alkaline earth metal atom.
Claim 3
Dependent Claim
29 words
The aqueous ink for ink-jet printing according to claim 1, wherein said polymer emulsion is an emulsion of fine polymer particles impregnated with a water-insoluble or sparingly water-soluble colorant.
Claim 4
Dependent Claim
24 words
The aqueous ink for ink-jet printing according to claim 1, wherein the polymer of said polymer emulsion comprises a vinyl polymer or a polyester.
Claim 5
Dependent Claim
154 words
The aqueous ink for ink-jet printing according to claim 1, wherein said vinyl polymer is obtainable by copolymerizing: (i) at least one monomer selected from the group consisting of a silicone macromer represented by formula (4): X(Y).sub.n Si(R.sub.5).sub.3-m (Z).sub.m ( 4) wherein X represents a polymerizable unsaturated group; Y represents a divalent linking group; R 5 represents a hydrogen atom, a lower aflkyl group, an aryl group or an alkoxy group; a plurality of R 5 's may be the same or different; Z represents a monovalent siloxane polymer moiety having a number average molecular weight of at least about 500; n represents 0 or 1; and m represents an integer of 1 to 3, an acrylamide monomer and a methacrylamide monomer not having a salt-forming group, (ii) a polymerizable unsaturated monomer having a salt-forming group, and (iii) a monomer copolymerizable with monomers (i) and (ii) in the presence of a radical polymerization initiator.
Claim 6
Dependent Claim
84 words
The aqueous ink for ink-jet printing according to claim 1, wherein said polyester contains in the polyester chain thereof a unit derived from a diol component represented by formula (6): ##STR9## wherein R 7 represents an alkyl group having 1 to 4 carbon atoms; A represents an alkylene group having 2 to 4 carbon atoms; s and t, which may be the same or different, each represent an integer of 1 or more; and the sum of s and t averages 2 to 10.
Claim 7
Dependent Claim
24 words
The aqueous ink for ink-jet printing according to claim 1, wherein the at least one compound is an amino acid or a salt thereof.
Claim 8
Dependent Claim
26 words
The aqueous ink for ink-jet printing according to claim 6, wherein the amino acid or a salt thereof is β-alanine, proline, γ-aminobutyric acid, arginine, or glycine.
Claim 9
Dependent Claim
25 words
The aqueous ink for ink-jet printing according to claim 7, wherein the amino acid or a salt thereof is β-alanine, γ-aminobutyric acid, arginine, or proline.
Claim 10
Dependent Claim
23 words
The aqueous ink for ink-jet printing according to claim 1, wherein the at least one compound is the compound represented by formula (1).
Claim 11
Dependent Claim
23 words
The aqueous ink for ink-jet printing according to claim 9, wherein the compound of formula (1) is N-methylglycine, N,N-dimethylglycine, N-ethylglycine, N-acetylglycine, or glycylglycine.
Claim 12
Dependent Claim
18 words
The aqueous ink for ink-jet printing according to claim 10, wherein the compound of formula (1) is N-methylglycine.
Claim 13
Dependent Claim
23 words
The aqueous ink for ink-jet printing according to claim 1, wherein the at least one compound is the compound represented by formula (2).
Claim 14
Dependent Claim
21 words
The aqueous ink for ink-jet printing according to claim 12, wherein the compound of formula (2) is N,N,N-trimethylglycine, α-propiobetaine, or γ-butyrobetaine.
Claim 15
Dependent Claim
18 words
The aqueous ink for ink-jet printing according to claim 13, wherein the compound of formula (2) is N,N,N-trimethylglycine.
References Cited (Backward Citations)
JPS5518412A
Cited
US4471079A
Cited
JPS5930873A
Cited
US4692188A
Cited
US5017224A
Cited
US5166276A
Cited
US4981902A
Cited
US5428101A
Cited
US4963189A
Cited
US5205862A
Cited
JPH03250069A
Cited
JPH0428776A
Cited
JPH04189876A
Cited
JPH04261478A
Cited
JPH04359071A
Cited
JPH04359072A
Cited
US5734403A
Cited
US5594067A
Cited
US5431722A
Cited
JPH06340835A
Cited
US5837754A
Cited
US5679143A
Cited
US5852074A
Cited
US5833744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-02-28 | 2003-08-30 | 2004-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-02-28 | 2007-08-30 | 2008-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-02-28 | 2011-08-30 | 2012-02-29 | $7700.00 | Window Closed / Lapsed |