US4523923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid disperse dye formulations containing non-ionic dispersants for transfer printing inks
Assignee: Novartis Corp
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Filing: 1984-02-16
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Granted: 1985-06-18
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Expires: 2004-02-16
Abstract
Abstract The invention relates to solid disperse dye formulations which do not contain anionic dispersants and which comprise one or more disperse dyes having a particle size of less than 5 μm, and one or more nonionic dispersants selected from the group of the fatty alcohol ethoxylates having a molecular weight of 800 to 2000, of the fatty amine ethoxylates having a molecular weight of 500 to 1000, and of the polyvinylpyrrolidones having a molecular weight of 10,000 to 25,000. These formulations are particularly suitable for preparing organic printing pastes and printing inks which contain synthetic thickeners and which are suitable for textile printing and for transfer printing.
Inventors
- 👤 Urs Buchel
- 👤 Paul Muther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:02
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/008; D; D06; D06P; D06P5/00; D06P5/003; D06P5/004; Y; Y10; Y10S; Y10S8/00; Y10S8/907
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
85 words
A solid disperse dye formulation which does not contain anionic dispersants and which comprises one or more disperse dyes having a particle size of less than 5 μm, and one or more nonionic dispersants selected from the group of the fatty alcohol ethoxylates having a molecular weight in the range from 800 to 2000, of the fatty amine ethoxylates having a molecular weight in the range from 500 to 1000 and of the polyvinylpyrrolidones having a molecular weight in the range from 10,000 to 25,000.
Claim 2
Dependent Claim
85 words
A solid disperse dye formulation which does not contain anionic dispersants and which comprises one or more disperse dyes having a particle size of less than 5 μm, and one or more nonionic dispersants selected from the group of the fatty alcohol ethoxylates having a molecular weight in the range from 800 to 2000, of the fatty amine ethoxylates having a molecular weight in the range from 500 to 1000 and of the polyvinylpyrrolidones having a molecular weight in the range from 10,000 to 25,000.
Claim 3
Dependent Claim
28 words
A formulation according to claim 1, which contains a disperse dye of the azo or anthraquinone series which sublimes in the temperature range from 160° to 220° C.
Claim 4
Dependent Claim
23 words
A formulation according to claim 1, which contains the nonionic dispersant in a concentration of 5 to 20% by weight based on dye.
Claim 5
Dependent Claim
49 words
A formulation according to claim 1, wherein the nonionic dispersant is a cetyl-stearyl alcohol ethoxylate with a molecular weight of 1000 to 1500, a laurylamine ethoxylate with a molecular weight of 500 to 800 and/or a C 2 -C 6 alkylpolyvinylpyrrolidone with a molecular weight of 13,000 to 22,000.
Claim 6
Dependent Claim
37 words
A formulation according to claim 1, which consists of 80 to 95% by weight of a disperse dye which sublimes in the temperature range from 160° to 220° C., and 20 to 5% of a nonionic dispersant.
Claim 7
Dependent Claim
54 words
A process for the preparation of a formulation according to claim 1, which comprises homogeneously dispersing one or more disperse dyes in water by adding at least one nonionic dispersant of the indicated kind, grinding the dispersion to a particle size of less than 5 μm and then drying, the fine dispersion so obtained.
Claim 8
Dependent Claim
23 words
A formulation according to claim 1, which contains the nonionic dispersant in a concentration of 8 to 15% by weight based on dye.
Claim 9
Dependent Claim
14 words
A process of claim 6 wherein the fine dispersion is dried by spray drying.
Claim 10
Dependent Claim
29 words
A method of preparing an organic printing paste or printing ink which comprises the step of dispersing a solid dye formulation of claim 1 in a printing ink vehicle.
References Cited (Backward Citations)
US3960486A
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GB1467746A
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US4295849A
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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) | 1988-06-17 | 1988-12-17 | 1989-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-17 | 1992-12-17 | 1993-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-17 | 1996-12-17 | 1997-06-18 | $7700.00 | Window Closed / Lapsed |