Patent US5500253A successfully refreshed from Google Patents.
US3961965A
Expired / Lapsed
US
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Dyestuff preparations and printing inks
Assignee: Novartis AG
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Filing: 1974-07-18
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Granted: 1976-06-08
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Expires: 1994-07-18
Abstract
Abstract The invention relates to a dyestuff preparation containing 1. at least one dyestuff and/or fluorescent brightening agent which sublimes at 100° to 300°C and 2. at least one resin soluble in organic solvents.
Inventors
- 👤 Guenther Zwahlen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:44
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/03; C09D11/037; C09B; C09B67/00; C09B67/0071; C09B67/008; C09B67/0092; C09D11/14; D; D06; D06P; D06P5/00; D06P5/003
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
49 words
An intaglio printing ink which contains: 1. the dyestuff of formula ##SPC12## ##SPC13## ##SPC14## 2. an aqueous-organic or substantially pure organic solvent or mixture thereof; and 3. at least one resinous cellulose derivative which dissolves readily in (2), and which serves as binder or thickener for the printing ink.
Claim 2
Dependent Claim
49 words
An intaglio printing ink which contains: 1. the dyestuff of formula ##SPC12## ##SPC13## ##SPC14## 2. an aqueous-organic or substantially pure organic solvent or mixture thereof; and 3. at least one resinous cellulose derivative which dissolves readily in (2), and which serves as binder or thickener for the printing ink.
Claim 3
Dependent Claim
27 words
A printing ink as claimed in claim 1 containing as component (2) an aliphatic or cycloaliphatic ester, ketone or alcohol containing at the most 6 carbon atoms.
Claim 4
Dependent Claim
17 words
A printing ink as claimed to claim 1, wherein the resin components (2) and (4) are identical.
Claim 5
Dependent Claim
15 words
A printing ink as claimed in claim 1, wherein the resin is a cellulose ether.
Claim 6
Dependent Claim
13 words
A printing ink as claimed in claim 4, wherein the resin is ethylcellulose.
Claim 7
Dependent Claim
15 words
A printing ink as claimed in claim 1, and the dyestuff has the formula ##SPC15##
Claim 8
Dependent Claim
15 words
A printing ink as claimed in claim 1, wherein the dyestuff has the formula ##SPC16##
Claim 9
Dependent Claim
15 words
A printing ink as claimed in claim 1, wherein the dyestuff has the formula ##SPC17##
Claim 10
Dependent Claim
15 words
A printing ink as claimed in claim 1, wherein the dyestuff has the formula ##SPC18##
Claim 11
Dependent Claim
15 words
A printing ink as claimed in claim 1 employing as component (2) isopropanol or methylethylketone.
References Cited (Backward Citations)
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Cited
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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) | 1979-06-08 | 1979-12-08 | 1980-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-08 | 1983-12-08 | 1984-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-08 | 1987-12-08 | 1988-06-08 | $7700.00 | Window Closed / Lapsed |