US3969071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carriers and their use in printing and dyeing
Assignee: Novartis AG
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Filing: 1974-09-04
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Granted: 1976-07-13
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Expires: 1994-09-04
Abstract
Abstract Temporary carriers, characterized in that they carry, on at least one of the faces of a heat-resistant sheet, a thin layer formed from a binder containing at least one cationic dyestuff, and a second layer, which is formed from a binder which can be of the same nature as that of the preceding layer, and which contains an agent which can change the anion of the cationic dyestuff and can render it hot-transferable.
Inventors
- 👤 Bernard Hugelin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:19
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/025; B41M5/035; D; D06; D06P; D06P5/00; D06P5/003; D06P5/004; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922; Y10S8/927; Y10S8/937
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
207 words
In a temporary carrier for use in the dry transfer printing or dyeing process said temporary carrier comprising an inert, heat-resistant base sheet bearing on at least one face thereof a transfer coating the improvement according to which the transfer coating comprises (a) a layer comprising (1) at least one cationic dyestuff which after reacting with an alkalizing agent passes into the vapor state at a temperature of from 160°C to 210°C and (2) a binder which upon drying forms a film sufficient to bond the dyestuff to the carrier base, which film is inert to the dyestuff and does not decompose under conditions of transfer, and (b) a layer comprising (1) an alkalizing agent which is capable of reacting with cationic dyestuff present in layer (a) to render said dyestuff vaporizable at a temperature of from 160°C to 210°C said agent being selected from the group consisting of an alkali or alkaline earth metal hydroxide, an alkali or alkaline earth metal alcoholate and an alkali or alkaline earth metal salt of a weak acid and (2) a binder which is stable to electrolytes, which upon drying forms a film which is inert to dyestuff present during transfer and which does not decompose under conditions of transfer.
Claim 2
Dependent Claim
207 words
In a temporary carrier for use in the dry transfer printing or dyeing process said temporary carrier comprising an inert, heat-resistant base sheet bearing on at least one face thereof a transfer coating the improvement according to which the transfer coating comprises (a) a layer comprising (1) at least one cationic dyestuff which after reacting with an alkalizing agent passes into the vapor state at a temperature of from 160°C to 210°C and (2) a binder which upon drying forms a film sufficient to bond the dyestuff to the carrier base, which film is inert to the dyestuff and does not decompose under conditions of transfer, and (b) a layer comprising (1) an alkalizing agent which is capable of reacting with cationic dyestuff present in layer (a) to render said dyestuff vaporizable at a temperature of from 160°C to 210°C said agent being selected from the group consisting of an alkali or alkaline earth metal hydroxide, an alkali or alkaline earth metal alcoholate and an alkali or alkaline earth metal salt of a weak acid and (2) a binder which is stable to electrolytes, which upon drying forms a film which is inert to dyestuff present during transfer and which does not decompose under conditions of transfer.
Claim 3
Dependent Claim
75 words
A temporary carrier according to claim 1 wherein the alkalizing agent is selected from the group consisting of (1) a sodium, potassium or lithium hydroxide, (2) a sodium, potassium or lithium alcoholate, (3) a sodium, potassium or lithium carbonate, (4) a sodium, potassium or lithium bicarbonate, (5) a sodium, potassium or lithium carboxylate, (6) a sodium, potassium or lithium borate, (7) a sodium, potassium or lithium phosphate and (8) a sodium, potassium or lithium sulfinate.
Claim 4
Dependent Claim
20 words
A temporary carrier according to claim 1 wherein cationic dyestuff present has a molecular weight not in excess of 400.
Claim 5
Dependent Claim
19 words
A temporary carrier according to claim 1 wherein the layer (a) also contains at least one transferable disperse dyestuff.
Claim 6
Dependent Claim
13 words
A temporary carrier according to claim 1 wherein layer (a) overlies layer (b).
Claim 7
Dependent Claim
17 words
A temporary carrier according to claim 1 wherein the binder of layer (b) is a water-soluble binder.
Claim 8
Dependent Claim
30 words
A temporary carrier according to claim 1 wherein the binder of layer (b) is soluble in an organic solvent from the group of alcohols and ketones of low molecular weight.
Claim 9
Dependent Claim
15 words
A temporary carrier according to claim 1 wherein the binder of layer (a) is water-insoluble.
Claim 10
Dependent Claim
16 words
A temporary carrier according to claim 1 wherein the base sheet is parchment or sulfurized paper.
Claim 11
Dependent Claim
18 words
A temporary carrier according to claim 1 wherein the binder of layers (a) and (b) is ethyl cellulose.
Claim 12
Dependent Claim
25 words
A temporary carrier according to claim 1 wherein the binder of layer (a) is ethyl cellulose and the binder of layer (b) is polyvinyl alcohol.
Claim 13
Dependent Claim
145 words
In a method for the dry transfer printing or dyeing or organic material which comprises bringing into contact the surface of the organic material to be dyed or printeed and the transfer coated surface of a temporary carrier, subjecting the temporary carrier and organic material to heating at a temperature of about 160° to about 220° for a time sufficient to effect transfer and separating the organic material and temporary carrier, the improvement according to which the organic material is a material which can be dyed or printed with cationic dyestuff, the temporary carrier is as defined in claim 1, and the time of heating to effect transfer is sufficient to permit reaction between the alkalizing agent and cationic dyestuff and for the thus formed vaporizable dyestuff to pass from the temporary carrier to the organic material and to penetrate into the said organic material.
References Cited (Backward Citations)
US3347865A
Cited
US1993524A
Cited
US2067435A
Cited
US2911280A
Cited
US2755200A
Cited
GB1221126A
Cited
CH536192A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-13 | 1980-01-12 | 1980-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-13 | 1984-01-12 | 1984-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-13 | 1988-01-12 | 1988-07-13 | $7700.00 | Window Closed / Lapsed |