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US5486550A
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Water based pigmented ink
Assignee: JS Staedtler GmbH and Co KG
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Filing: 1994-06-17
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Granted: 1996-01-23
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Expires: 2014-06-17
Abstract
Abstract A water based pigmented ink for writing, drawing, painting, printing or marking, is composed of coloring matter, additives, and water as solvent. The coloring matter is a pigment formed of one or more alkaline dyes and of a solid polymer dispersion component. The ink contains an acid group-free polyhydroxy compound as a stabilizer, and at least one surfactant and/or emulsifier, as well as a preservative.
Inventors
- 👤 Manfred Lubas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:51
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/03; C09D11/037; C09B; C09B67/00; C09B67/0071; C09B67/0075; C09D11/16; C09K; C09K23/00; C09K23/34
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
178 words
An ink for writing, drawing, painting, printing or marking, the ink comprising a mixture of coloring matter comprising color pigments formed of at least one dye and at least one solid polymer dispersion component, wherein the at least one dye is selected from the group consisting of Basic Yellow 40, Solvent Yellow 43, Basic Red 1, Basic Red 1:1, Basic Violet 10, Basic Blue 3, Reactive Blue 41, Solvent Yellow 160/1, Basic Violet 11:1, Basic Violet 35, or from a mixture thereof, and wherein the at least one solid polymer dispersion component comprises 60-65% acrylonitrile and 35-40% by weight of butyl acrylate, further comprising a stabilizing acid group-free polyhydroxy compound selected from the group consisting of a sugar, a sugar alcohol, a polyglycerin or a mixture thereof, at least one of a surfactant and an emulsifier, at least one preservative, and water as solvent, wherein the color pigments are reaction products formed within the ink mixture through a reaction between functional groups of the at least one alkaline dye and the at least one solid polymer dispersion component.
Claim 2
Dependent Claim
178 words
An ink for writing, drawing, painting, printing or marking, the ink comprising a mixture of coloring matter comprising color pigments formed of at least one dye and at least one solid polymer dispersion component, wherein the at least one dye is selected from the group consisting of Basic Yellow 40, Solvent Yellow 43, Basic Red 1, Basic Red 1:1, Basic Violet 10, Basic Blue 3, Reactive Blue 41, Solvent Yellow 160/1, Basic Violet 11:1, Basic Violet 35, or from a mixture thereof, and wherein the at least one solid polymer dispersion component comprises 60-65% acrylonitrile and 35-40% by weight of butyl acrylate, further comprising a stabilizing acid group-free polyhydroxy compound selected from the group consisting of a sugar, a sugar alcohol, a polyglycerin or a mixture thereof, at least one of a surfactant and an emulsifier, at least one preservative, and water as solvent, wherein the color pigments are reaction products formed within the ink mixture through a reaction between functional groups of the at least one alkaline dye and the at least one solid polymer dispersion component.
Claim 3
Dependent Claim
16 words
The ink according to claim 1, wherein the at least one dye is an alkaline dye.
Claim 4
Dependent Claim
15 words
The ink according to claim 1, wherein the sugar is a monosaccharide or an oligosaccharide.
Claim 5
Dependent Claim
14 words
The ink according to claim 1, wherein the sugar is a disaccharide or trisaccharide.
Claim 6
Dependent Claim
16 words
The ink according to claim 1, wherein the sugar is saccharose, glucose, fructose, lactose or maltose.
Claim 7
Dependent Claim
20 words
The ink according to claim 1, wherein the sugar alcohol is at least one of sorbitol, xylitol, lactite and isomalt.
Claim 8
Dependent Claim
20 words
The ink according to claim 1, wherein the polyglycerin is a pentaglycerin having 5 glycerin molecules connected through ether bridges.
Claim 9
Dependent Claim
16 words
The ink according to claim 1, wherein the polyglycerin is a decaglycerin with 10 glycerin molecules.
Claim 10
Dependent Claim
44 words
The ink according to claim 1, wherein the preservative is selected from the group consisting of a sodium salt of sorbic acid, a synergistic preparation of benzisothiazolinon, a synergistic mixture of an organic peroxide and alcohols, and a synergistic mixture of semi-acetals and isothiazolinones.
Claim 11
Dependent Claim
36 words
The ink according to claim 1, wherein the surfactant or emulsifier is selected from the group consisting of lanolin-sulfosuccinate, ethoxylated lanolin, ethoxylated lanolin oil, polyethylene-glycerin-monoisostearate, polyethylene-glycerin-monolaureate, polyoxyethlene-glycerin-monooleate, ethylene oxide adduct of hydrated castor oil, and polyoxyethylene-glycerin-trioleate.
Claim 12
Dependent Claim
34 words
The ink according to claim 1, comprising, in percent by weight, ______________________________________
10-25% color pigment or pigments
5-30% polyhydroxy compound or compounds
0.5-30% emulsifiers, surfactants,
preservatives, additives, and
60-75% water as a base.
______________________________________
Claim 13
Dependent Claim
12 words
The ink according to claim 1, comprising 15-18% by weight color pigment.
Claim 14
Dependent Claim
21 words
The ink according to claim 1, comprising the dye in a quantity of 0.1 to 1% by weight of the mixture.
Claim 15
Dependent Claim
22 words
The ink according to claim 1, comprising the acid group-free polyhydroxy compound in a quantity of 8-18% by weight of the mixture.
Claim 16
Dependent Claim
18 words
The ink according to claim 1, comprising between 1.5 and 2.5% by weight emulsifiers, surfactants, preservatives and additives.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-01-22 | 1999-07-24 | 2000-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-22 | 2003-07-24 | 2004-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-22 | 2007-07-24 | 2008-01-23 | $7700.00 | Window Closed / Lapsed |