US4145182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of disperse dyes having good printing properties for transfer printing
Assignee: Hoechst AG
•
Filing: 1978-02-02
•
Granted: 1979-03-20
•
Expires: 1998-02-02
Abstract
Abstract Disperse dyestuffs which are sufficiently capable of subliming for serving in the transfer print process but which yield printing inks of a too high viscosity can be finished to fit the requirements for printing inks for transfer printing by treating said dyestuffs in a liquid medium at a temperature between 50° and 180° C. Thus printing inks of sufficiently low and constant viscosity can be obtained.
Inventors
- 👤 Konrad Opitz
- 👤 Christa Uhde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:25
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/03; C09D11/037; C09B; C09B1/00; C09B1/50; C09B1/51; C09B1/515; C09B67/00; C09B67/0001; C09B67/0014; D; D06; D06P; D06P5/00; D06P5/003; D06P5/004; D06P5/006
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
147 words
A process for finishing disperse dyestuffs of the formula ##STR2## wherein one of the substituents X and Y is hydroxy and the other is --NH 2-b R' b' , R and R' are the same or different groups selected from methyl and ethyl, a and b are numbers from zero to 2, the sum of which is zero to 3, Hal is chlorine or bromine and x is a number from zero to 2, said dyestuff being one which is sufficiently capable of subliming so as to be used in a transfer print process, said finishing process being for the purpose of improving the performance of the dyestuff in a printing ink of constant viscosity used in an anhydrous process for printing transfer printing paper, which finishing process comprises treating said dyestuff at a temperature of 80° to 130° C. in a liquid medium consisting of water.
Claim 2
Dependent Claim
147 words
A process for finishing disperse dyestuffs of the formula ##STR2## wherein one of the substituents X and Y is hydroxy and the other is --NH 2-b R' b' , R and R' are the same or different groups selected from methyl and ethyl, a and b are numbers from zero to 2, the sum of which is zero to 3, Hal is chlorine or bromine and x is a number from zero to 2, said dyestuff being one which is sufficiently capable of subliming so as to be used in a transfer print process, said finishing process being for the purpose of improving the performance of the dyestuff in a printing ink of constant viscosity used in an anhydrous process for printing transfer printing paper, which finishing process comprises treating said dyestuff at a temperature of 80° to 130° C. in a liquid medium consisting of water.
Claim 3
Dependent Claim
174 words
A process for finishing disperse dyestuffs of the formula ##STR3## wherein one of the substituents X and Y is hydroxy and the other is --NH 2-b R' b' , R and R' are of the same or different groups selected from methyl and ethyl, a and b are numbers from zero to 2, the sum of which is zero to 3, Hal is chlorine or bromine and x is a number from zero to 2, said dyestuff being one which is sufficiently capable of subliming so as to be used in a transfer print process, said finishing process being for the purpose of improving the performance of the dyestuff in a printing ink of constant viscosity used in an anhydrous process for printing transfer printing paper, which finishing process comprises treating said dyestuff at a temperature of 80° to 130° C. in a liquid medium consisting of an aliphatic hydrocarbon boiling between 50° and 200° C., a chlorinated aliphatic hydrocarbon of 1 to 4 carbon atoms, toluene, xylene, chlorobenzene, dichlorobenzene or a mixture thereof.
Claim 4
Dependent Claim
174 words
A process for finishing disperse dyestuffs of the formula ##STR3## wherein one of the substituents X and Y is hydroxy and the other is --NH 2-b R' b' , R and R' are of the same or different groups selected from methyl and ethyl, a and b are numbers from zero to 2, the sum of which is zero to 3, Hal is chlorine or bromine and x is a number from zero to 2, said dyestuff being one which is sufficiently capable of subliming so as to be used in a transfer print process, said finishing process being for the purpose of improving the performance of the dyestuff in a printing ink of constant viscosity used in an anhydrous process for printing transfer printing paper, which finishing process comprises treating said dyestuff at a temperature of 80° to 130° C. in a liquid medium consisting of an aliphatic hydrocarbon boiling between 50° and 200° C., a chlorinated aliphatic hydrocarbon of 1 to 4 carbon atoms, toluene, xylene, chlorobenzene, dichlorobenzene or a mixture thereof.
Claim 5
Dependent Claim
183 words
A process for finishing disperse dyestuffs of the formula ##STR4## wherein one of the substituents X and Y is hydroxy and the other is --NH 2-b R' b' , R and R' are the same or different groups selected from methyl and ethyl, a and b are numbers from zero to 2, the sum of which is zero to 3, Hal is chlorine or bromine and x is a number from zero to 2, said dyestuff being one which is sufficiently capable of subliming so as to be used in a transfer print process, said finishing process being for the purpose of improving the performance of the dyestuff in a printing ink of constant viscosity used in an anhydrous process for printing transfer printing paper, which finishing process comprises treating said dyestuff at a temperature of 80° to 130° C. in a liquid medium consisting of dimethyl formamide, an alkanol of 1 to 6 carbon atoms, acetone, dimethylsulfoxide, an alkanoic acid of 1 to 4 carbon atoms or a mixture thereof or a mixture of one or more of said solvents with water.
Claim 6
Dependent Claim
183 words
A process for finishing disperse dyestuffs of the formula ##STR4## wherein one of the substituents X and Y is hydroxy and the other is --NH 2-b R' b' , R and R' are the same or different groups selected from methyl and ethyl, a and b are numbers from zero to 2, the sum of which is zero to 3, Hal is chlorine or bromine and x is a number from zero to 2, said dyestuff being one which is sufficiently capable of subliming so as to be used in a transfer print process, said finishing process being for the purpose of improving the performance of the dyestuff in a printing ink of constant viscosity used in an anhydrous process for printing transfer printing paper, which finishing process comprises treating said dyestuff at a temperature of 80° to 130° C. in a liquid medium consisting of dimethyl formamide, an alkanol of 1 to 6 carbon atoms, acetone, dimethylsulfoxide, an alkanoic acid of 1 to 4 carbon atoms or a mixture thereof or a mixture of one or more of said solvents with water.
Claim 7
Dependent Claim
18 words
A process as defined in claim 3, wherein the liquid medium is a water containing organic water-miscible solvent.
Claim 8
Dependent Claim
16 words
A process as defined in claim 3, wherein the dyestuff is stirred in the liquid medium.
Claim 9
Dependent Claim
13 words
A process as defined in claim 3, wherein R and R' are methyl.
Claim 10
Dependent Claim
18 words
A process as defined in claim 3, wherein the sum of a and b is 0.5 to 2.
Claim 11
Dependent Claim
18 words
A process as defined in claim 3, wherein the sum of a and b is 0.5 to 1.
Claim 12
Dependent Claim
11 words
A process as defined in claim 3, wherein Hal is bromine.
Claim 13
Dependent Claim
11 words
A process as defined in claim 3, wherein x is 1.
References Cited (Backward Citations)
DE1619535U
Cited
DE1029506B
Cited
GB973851A
Cited
DE1184318B
Cited
GB1221126A
Cited
US3958929A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-19 | 1982-09-18 | 1983-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-19 | 1986-09-18 | 1987-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-19 | 1990-09-18 | 1991-03-20 | $7700.00 | Window Closed / Lapsed |