US5098475A
Expired / Lapsed
US
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Inks with dendrimer colorants
Assignee: Xerox Corp
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Filing: 1991-01-28
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Granted: 1992-03-24
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Expires: 2011-01-28
Abstract
Abstract An ink composition comprising a solution with a dendrimer colored with a dye or dyes covalently attached thereto. As optional additives there may be included in the ink humectants and biocides. The aforementioned inks can be prepared by mixing the appropriate components such as a dendrimer, water and a reactive dye. Also disclosed is a process for the utilization of the aforementioned compositions and ink jet printing processes.
Inventors
- 👤 Francoise M. Winnik
- 👤 Anthony R. Davidson
- 👤 Marcel P. Breton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:25
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/328; C09B; C09B69/00; C09B69/10; Y; Y10; Y10S; Y10S424/00; Y10S424/16
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
19 words
An aqueous ink composition comprising a solution of a dendrimer colored with a dye or dyes covalently attached thereto.
Claim 2
Dependent Claim
19 words
An aqueous ink composition comprising a solution of a dendrimer colored with a dye or dyes covalently attached thereto.
Claim 3
Dependent Claim
17 words
An ink in accordance with claim 1 wherein the solution contains water, and three different dye colors.
Claim 4
Dependent Claim
17 words
An ink in accordance with claim 1 wherein the solution contains water, a humectant, and a biocide.
Claim 5
Dependent Claim
18 words
An ink in accordance with claim 1 wherein the dendrimer is a first, second or third generation dendrimer.
Claim 6
Dependent Claim
30 words
An ink in accordance with claim 1 wherein the dendrimer is microparticle of the first generation with an average diameter of about 10.8 Angstroms, and with 6 terminal amino groups.
Claim 7
Dependent Claim
31 words
An ink in accordance with claim 1 wherein the dendrimer is a microparticle of the third generation with an average diameter of about 22 Angstroms and with 24 terminal amino groups.
Claim 8
Dependent Claim
17 words
An ink in accordance with claim 1 wherein the dye or dyes are selected from Reactive dyes.
Claim 9
Dependent Claim
36 words
An ink in accordance with claim 1 wherein the dye is selected from the group consisting of anthraquinones, monoazo dyes, disazo dyes, phthalocyanines, aza[18]annulenes, formazan copper complexes, and triphenodioxazines, to which are covalently attached reactive groups.
Claim 10
Dependent Claim
38 words
An ink in accordance with claim 1 wherein the dye comprises a reactive group selected from the group consisting of dichlorotriazines, monochlorotriazines, dichloroquinoxalines, aminoepoxides, mono-(m-carboxypyridinium)-triazines, 2,4,5-trihalogenopyrimidines, 2,4-dichloropyrimidines, 2,3-dichloroquinoxalines, monofluorotriazines, 4,5-dichloro-6-methyl-2-methylsulfonylpyrimidines, 1,4-dichlorophthalazines, chlorobenzo-thiazoles, sulfatoethylsulfones, β-chloroethylsulfones, 4,5-dichloro-6-pyridazones, α-bromoacryloylamidos, and α,β-dibromopropionylamidos.
Claim 11
Dependent Claim
58 words
An ink in accordance with claim 1 wherein the dye is present in an amount of about 0.5 to about 10 percent by weight, the dendrimer is present in an amount of about 1 to about 15 percent by weight, and the solution contains water in an amount of from about 75 to about 98.5 percent by weight.
Claim 12
Dependent Claim
59 words
An ink in accordance with claim 1 wherein the dye is present in an amount of about 2 to about 7 percent by weight, the dendrimer is present in an amount of from about 2 to about 13 percent by weight, and the solution contains water in an amount of from about 96 to about 80 percent by weight.
Claim 13
Dependent Claim
25 words
An ink in accordance with claim 3 wherein the humectant is present in the amount of from about 2 to about 50 percent by weight.
Claim 14
Dependent Claim
13 words
An ink in accordance with claim 12 wherein the humectant is a glycol.
Claim 15
Dependent Claim
28 words
An ink in accordance with claim 12 wherein the humectant is a glycol selected from the group consisting of ethylene glycol, propylene glycol, diethylene glycol, and mixtures thereof.
Claim 16
Dependent Claim
25 words
An ink in accordance with claim 12 wherein the biocide is present in the amount of from about 0.02 to about 0.1 percent by weight.
Claim 17
Dependent Claim
18 words
An ink composition comprised of a solution of water, and a dendrimer colored with a dye attached thereto.
Claim 18
Dependent Claim
18 words
An ink composition comprised of a solution of water, and a dendrimer colored with a dye attached thereto.
Claim 19
Dependent Claim
16 words
An ink in accordance with claim 16 wherein the solution contains a biocide, and a humectant.
Claim 20
Dependent Claim
15 words
An ink in accordance with claim 2 wherein distilled water or deionized water is selected.
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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) | 1995-03-24 | 1995-09-23 | 1996-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-24 | 1999-09-23 | 2000-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-24 | 2003-09-23 | 2004-03-24 | $7700.00 | Window Closed / Lapsed |