Patent US3977828A successfully refreshed from Google Patents.
US3977828A
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US
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Aqueous dyestuff preparations of dyestuffs insoluble to difficultly soluble in water
Assignee: Novartis AG
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Filing: 1974-09-17
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Granted: 1976-08-31
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Expires: 1994-09-17
Abstract
Abstract New aqueous, stable, highly concentrated, finely dispersed, flowable dyestuff preparations having a low content of dispersing agents and a high content of dyestuff insoluble to difficultly soluble in water are described, which dyestuffs have a particle size smaller than 10 μ, particularly smaller than 2 μ, the said preparations being characterised in that they contain at least 10 percent by weight of water, at least 30 percent by weight of a finely dispersed dyestuff, especially a disperse or vat dyestuff, and a mixture consisting of at most 10 percent by weight of an anionactive dispersing agent, at most 5 percent by weight of a nonionic dispersing agent and at most 35 percent by weight of a hydrotropic agent as well as, optionally, further additives. The said dyestuff preparations are especially useful for the preparation of printing pastes having an aqueous base or a water-in-oil emulsion base, which themselves can be used preferably for the printing of carrier materials, particularly paper, suitable for transfer printing.
Inventors
- 👤 Carl Becker
- 👤 Jacques Wegmann
- 👤 Andres Schaub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:17
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0084; D; D06; D06L; D06L4/00; D06L4/60; D06L4/664; D06P; D06P1/00; D06P1/22; D06P3/00; D06P3/34; D06P3/52; D06P3/54; D06P3/82; D06P3/8204; D06P3/8223; D06P3/8238; D06P3/8247; D06P5/00; D06P5/001; D06P5/003; D06P5/004; Y; Y10; Y10S; Y10S8/00; Y10S8/908; Y10S8/912
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
88 words
An aqueous stable, highly concentrated finely dispersed flowable dyestuff composition comprising at least 10% by weight of water, at least 30% by weight of at least one finely dispersed dyestuff insoluble to difficultly soluble in water having a particle size smaller than 10μ and a mixture consisting of at most 10% by weight of an anion-active dispersing agent, at most 5% by weight of a nonionic dispersing agent and at most 35% by weight of a hydrotropic agent capable of converting the dyestuff into a stable deflocculated form.
Claim 2
Dependent Claim
88 words
An aqueous stable, highly concentrated finely dispersed flowable dyestuff composition comprising at least 10% by weight of water, at least 30% by weight of at least one finely dispersed dyestuff insoluble to difficultly soluble in water having a particle size smaller than 10μ and a mixture consisting of at most 10% by weight of an anion-active dispersing agent, at most 5% by weight of a nonionic dispersing agent and at most 35% by weight of a hydrotropic agent capable of converting the dyestuff into a stable deflocculated form.
Claim 3
Dependent Claim
17 words
A composition according to claim 1 wherein the dyestuff has a particle size smaller than 2μ .
Claim 4
Dependent Claim
42 words
A dyestuff composition according to claim 1 which contains 1 to 5 percent by weight of an anion-active dispersing agent, 1 to 3 percent by weight by a nonionic dispersing agent and 5 to 20 percent by weight of a hydrotropic agent.
Claim 5
Dependent Claim
21 words
A dyestuff composition according to claim 1 which contains 35 to 65 percent by weight by at least one dyestuff therein.
Claim 6
Dependent Claim
23 words
A dyestuff composition according to claim 1 which contains at least 40 to 60 percent by weight of at least one dyestuff therein.
Claim 7
Dependent Claim
18 words
A dyestuff composition according to claim 1 wherein the dyestuff is a disperse dyestuff or a vat dyestuff.
Claim 8
Dependent Claim
18 words
A dyestuff composition according to claim 6 wherein the dyestuff is one used in the transfer printing process.
Claim 9
Dependent Claim
31 words
A dyestuff composition according to claim 1 wherein the anion-active dispersing agent is selected from the group consisting of condensation products of aromatic sulphonic acids with formaldehyde, lignin sulphonates and polyphosphates.
Claim 10
Dependent Claim
32 words
A dyestuff composition according to claim 1 wherein the nonionic dispersing agent is selected from the group consisting of a fatty alcohol polyglocol ether, a phenol ether and a ricinoleic acid ester.
Claim 11
Dependent Claim
20 words
A dyestuff composition according to claim 1 wherein the hydrotropic agent is selected from the group consisting of nitrogen-containing compounds.
Claim 12
Dependent Claim
21 words
A dyestuff composition according to claim 10 wherein the nitrogen-containing compounds are selected from the group consisting of urea and dimethylurea.
Claim 13
Dependent Claim
33 words
In a printing paste composition comprising a dyestuff composition and a thickener in an aqueous base or water-in-oil emulsion base, the improvement wherein the dyestuff composition is the dyestuff composition of claim 1.
Claim 14
Dependent Claim
15 words
A printing paste according to claim 12 wherein the thickener is a polyacrylic acid thickener.
Claim 15
Dependent Claim
36 words
In a method of dyeing a textile material by impregnating a textile material with an aqueous dyestuff composition followed by drying the thus-dyed textile, the improvement wherein the dyestuff composition is the composition of claim 1.
Claim 16
Dependent Claim
39 words
In a method of dyeing a textile material by contacting a textile material with a printing paste containing a dyestuff followed by drying the thus-dyed textile, the improvement wherein the printing paste is the printing paste of claim 12.
Claim 17
Dependent Claim
51 words
In a method of transfer dyeing a textile material by applying a printing paste containing a dyestuff to a carrier material followed by transferring the dyestuff from the carrier material to a textile material by application of heat, the improvement wherein the printing paste is the printing paste of claim 12.
Claim 18
Dependent Claim
95 words
A dyestuff composition according to claim 1 comprising 40 to 60 percent by weight of the dyestuff of the formula ##SPC10## 1.0 to 5 percent by weight of the sodium salt of an anion-active condensation product of naphthalenesulphonic acid with formaldehyde, 1 to 3 percent by weight of cetyl stearyl alcohol, etherified with 25 moles of ethylene oxide, an effective fungicidal amount of a 35% aqueous formalin solution, an effective amount of 1,2-propylene glycol as an antifrost agent, 5 to 20 percent by weight of urea, and 20 to 30 percent by weight of water.
Claim 19
Dependent Claim
98 words
A dyestuff composition according to claim 1 comprising 40 to 60 percent by weight of a dyestuff mixture of the dyestuffs of the formulae ##SPC11## 1.0 to 5 percent by weight of the sodium salt of an anion-active condensation product of naphthalenesulphonic acid with formaldehyde, 1 to 3 percent by weight of cetyl-stearyl alcohol, etherified with 25 moles of ethylene oxide, an effective amount of 1,2-propylene glycol as an antifrost agent, an effective fungicidal amount of a 35% aqueous formalin solution, 5 to 20 percent by weight of urea, and 20 to 30 percent by weight of water.
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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) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |