Patent US3442394A successfully refreshed from Google Patents.
Patent US5443630A successfully refreshed from Google Patents.
US5443630A
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Inkjet single-phase reactive printing
Assignee: Hoechst AG
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Filing: 1994-03-02
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Granted: 1995-08-22
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Expires: 2014-03-02
Abstract
Abstract Aqueous ink formulation and a process for printing sheetlike cellulose fiber materials or materials containing cellulose fibers with reactive dyes using a single-phase inkjet process or some other non-contact minimal addon spray technique and subsequent fixation of the reactive dyes on the fiber, which comprises using an aqueous ink formulation comprising an alkali metal fluoride, an alkali metal formate, an alkali metal citrate, an alkali metal salt of a C 2 -C 4 -dicarboxylic acid or a mixture thereof.
Inventors
- 👤 Andreas von der Eltz
- 👤 Andreas Schrell
- 👤 Hans-Helmut Steuernagel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:54
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/0004; D06P1/44; D06P1/653; D06P1/6533; D06P1/673; D06P1/67333; D06P1/6735; D06P1/67358; D06P5/00; D06P5/30
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
110 words
A process for printing cellulose fiber sheet materials or sheet materials containing cellulose fibers using a single-phase inkjet process or a noncontact minimal add on spray technique to print said sheet materials with a reactive dye and subsequent fixation of the reactive dyes on the fiber, which comprises the steps of: providing an aqueous ink formulation comprising a reactive dye and a salt selected from the group consisting of an alkali metal fluoride, an alkali metal citrate, an alkali metal salt of a C 2 -C 4 -dicarboxylic acid and a mixture thereof, and contacting said sheet material with a reactive dye using a single-phase non-contact add on spray technique.
Claim 2
Dependent Claim
110 words
A process for printing cellulose fiber sheet materials or sheet materials containing cellulose fibers using a single-phase inkjet process or a noncontact minimal add on spray technique to print said sheet materials with a reactive dye and subsequent fixation of the reactive dyes on the fiber, which comprises the steps of: providing an aqueous ink formulation comprising a reactive dye and a salt selected from the group consisting of an alkali metal fluoride, an alkali metal citrate, an alkali metal salt of a C 2 -C 4 -dicarboxylic acid and a mixture thereof, and contacting said sheet material with a reactive dye using a single-phase non-contact add on spray technique.
Claim 3
Dependent Claim
14 words
The process of claim 1, wherein the alkali metal is lithium, sodium or potassium.
Claim 4
Dependent Claim
38 words
The process of claim 1, wherein the alkali metal salt is selected from the group consisting of sodium fluoride, potassium fluoride, sodium citrate, potassium citrate, lithium citrate, lithium malonate, sodium malonate, potassium malonate, sodium oxalate and potassium oxalate.
Claim 5
Dependent Claim
13 words
The process of claim 1, wherein the alkali metal salt is potassium fluoride.
Claim 6
Dependent Claim
31 words
The process of claim 1, wherein the alkali metal salt or mixture of alkali metal salts is present in a concentration from 30 to 300 g per liter of ink formulation.
Claim 7
Dependent Claim
31 words
The process of claim 1, wherein the alkali metal salt or mixture of alkali metal salts is present in a concentration from 100 to 200 g per liter of ink formulation.
Claim 8
Dependent Claim
16 words
The process of claim 1, wherein the ink formulation additionally contains at least one hydrotropic substance.
Claim 9
Dependent Claim
17 words
The process of claim 7, wherein the hydrotropic substance is urea, a glycol monoalkyl ether or glycol.
Claim 10
Dependent Claim
19 words
The process of claim 1, wherein the ink formulation additionally contains at least one salt containing water of crystallization.
Claim 11
Dependent Claim
29 words
The process of claim 9, wherein the at least one salt containing water of crystallization is selected from the group consisting of lithium chloride, lithium sulfate, and sodium sulfate.
Claim 12
Dependent Claim
16 words
The process of claim 1, wherein the ink formulation additionally contains at least one disperse dye.
Claim 13
Dependent Claim
21 words
The process of claim 1, wherein the fiber material to be printed is cotton, staple viscose or a polyester-cellulose blend fabric.
Claim 14
Dependent Claim
72 words
An aqueous ink formulation for inkjet printing or for any other non-contact minimal add on spray technique, consisting essentially of a) an aqueous solution of a reactive dye, b) at least one alkali metal fluoride, alkali metal citrate or alkali salt of a C 2 -C 4 -dicarboxylic acid, and optionally c) at least one disperse dye, d) at least one salt containing water of crystallization, e) at least one hydrotropic substance.
Claim 15
Dependent Claim
72 words
An aqueous ink formulation for inkjet printing or for any other non-contact minimal add on spray technique, consisting essentially of a) an aqueous solution of a reactive dye, b) at least one alkali metal fluoride, alkali metal citrate or alkali salt of a C 2 -C 4 -dicarboxylic acid, and optionally c) at least one disperse dye, d) at least one salt containing water of crystallization, e) at least one hydrotropic substance.
Claim 16
Dependent Claim
14 words
The aqueous ink formulation of claim 13, wherein component b) is or potassium fluoride.
Claim 17
Dependent Claim
13 words
The process of claim 1, wherein the alkali metal citrate is sodium citrate.
Claim 18
Dependent Claim
86 words
A process for printing cellulose fiber sheet materials or sheet materials containing cellulose fibers with reactive dyes using a single-phase inkjet process or a noncontact minimal add on spray technique and subsequent fixation of the reactive dyes on the fiber, which comprises the steps of providing an aqueous ink formulation comprising a reactive dye and comprising an alkali metal formate in a concentration of 100 to 200 g/l of said formulation, and contacting said sheet material with said aqueous ink formulation using a noncontact spray technique.
Claim 19
Dependent Claim
86 words
A process for printing cellulose fiber sheet materials or sheet materials containing cellulose fibers with reactive dyes using a single-phase inkjet process or a noncontact minimal add on spray technique and subsequent fixation of the reactive dyes on the fiber, which comprises the steps of providing an aqueous ink formulation comprising a reactive dye and comprising an alkali metal formate in a concentration of 100 to 200 g/l of said formulation, and contacting said sheet material with said aqueous ink formulation using a noncontact spray technique.
Claim 20
Dependent Claim
18 words
The process of claim 16, wherein the alkali metal formate is lithium formate, sodium formate or potassium formate.
Claim 21
Dependent Claim
16 words
The process of claim 16, wherein the ink formulation additionally contains at least one hydrotropic substance.
Claim 22
Dependent Claim
19 words
The process of claim 16, wherein the ink formulation additionally contains at least one salt containing water or crystallization.
Claim 23
Dependent Claim
31 words
The process of claim 19, wherein the at least one salt containing water of crystallization is selected from the group consisting of lithium chloride, lithium sulfate, sodium sulfate and sodium citrate.
Claim 24
Dependent Claim
16 words
The process of claim 16, wherein the ink formulation additionally contains at least one disperse dye.
Claim 25
Dependent Claim
21 words
The process of claim 16, wherein the fiber material to be printed is cotton, staple viscose, or a polyester-cellulose blend fabric.
Claim 26
Dependent Claim
56 words
A aqueous ink formulation, consisting essentially of a) an aqueous solution of a reactive dye, b) an alkali metal formate in a concentration of 100 to 200 g/l of said aqueous solution, and optionally c) at least one disperse dye, d) at least one salt containing water of crystallization, and e) at least one hydrotropic substance.
Claim 27
Dependent Claim
56 words
A aqueous ink formulation, consisting essentially of a) an aqueous solution of a reactive dye, b) an alkali metal formate in a concentration of 100 to 200 g/l of said aqueous solution, and optionally c) at least one disperse dye, d) at least one salt containing water of crystallization, and e) at least one hydrotropic substance.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1998-08-21 | 1999-02-20 | 1999-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-08-21 | 2003-02-20 | 2003-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-08-21 | 2007-02-20 | 2007-08-22 | $7700.00 | Window Closed / Lapsed |