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US6031019A
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Aqueous ink for ink-jet printing
Assignee: Kao Corp
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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
2026-10-25 19:07
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.
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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 |