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Patent US4432770A successfully refreshed from Google Patents.
US4432770A
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Rapid dyeing of polyester fibers with a mixture of disperse dyes
Assignee: FIRST NATIONAL STATE BANK NEWARK NEW JERSEY
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Filing: 1982-11-17
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Granted: 1984-02-21
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Expires: 2002-11-17
Abstract
Abstract Disclosed is a method of rapid dyeing a substrate comprising polyester fibres at a temperature above 100° C. comprising bringing into contact with the substrate an aqueous dyebath containing a mixture of at least two disperse dyes having each individually specific physicochemical properties.
Inventors
- 👤 Rolf Hasler
- 👤 Beat Henzi
- 👤 Ernst Schnider
- 👤 Hermann Ulshoefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:01
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/34; D06P3/52; D06P3/54; Y; Y10; Y10S; Y10S534/00; Y10S534/07; Y10S8/00; Y10S8/92; Y10S8/922
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
150 words
A method of rapid dyeing a substrate comprising polyester fibers comprising bringing into contact with the substrate an aqueous dyebath at a temperature above 100° C. and containing a mixture of at least two disperse dyes, said mixture consisting of disperse dyes having each individually (i) a degree of absorption A≧90% after 5 minutes at 130° C. and ≧95% after 20 minutes of 130° C. for a standard dyeing depth of 4×1/1, the starting dyeing temperature being 70° C. and the heating rate 3° C./minute, (ii) a diffusion coefficient D at 130° C. ≧1.6.10 -10 cm 2 .sec -1 , (iii) a ratio C.°/RTT≧14 wherein C.° is the saturation concentration in mg dye per g substrate and RTT is the dye concentration in mg per g substrate required for the standard dyeing depth 1/1, and (iv) a kinetic parameter Z≧1.6.10 -4 wherein Z=k.C.°/RTT.sub.√D wherein k=1 cm -1 sec 1/2 .
Claim 2
Independent Claim
150 words
A method of rapid dyeing a substrate comprising polyester fibers comprising bringing into contact with the substrate an aqueous dyebath at a temperature above 100° C. and containing a mixture of at least two disperse dyes, said mixture consisting of disperse dyes having each individually (i) a degree of absorption A≧90% after 5 minutes at 130° C. and ≧95% after 20 minutes of 130° C. for a standard dyeing depth of 4×1/1, the starting dyeing temperature being 70° C. and the heating rate 3° C./minute, (ii) a diffusion coefficient D at 130° C. ≧1.6.10 -10 cm 2 .sec -1 , (iii) a ratio C.°/RTT≧14 wherein C.° is the saturation concentration in mg dye per g substrate and RTT is the dye concentration in mg per g substrate required for the standard dyeing depth 1/1, and (iv) a kinetic parameter Z≧1.6.10 -4 wherein Z=k.C.°/RTT.sub.√D wherein k=1 cm -1 sec 1/2 .
Claim 3
Dependent Claim
43 words
A method according to claim 1, in which the degree of adsorption A is ≧70% after 10 minutes at 120° C., ≧80% after 5 minutes at 125° C., ≧90% after 5 minutes at 130° C. and ≧95% after 20 minutes at 130° C.
Claim 4
Dependent Claim
29 words
A method according to claim 1, in which the disperse dyes are used in amounts from 0.001 to 30% by weight based on the weight of the polyester substrate.
Claim 5
Dependent Claim
18 words
A method according to claim 1, in which a mixture of 2 or 3 individual dyes is used.
Claim 6
Dependent Claim
37 words
A method according to claim 1, in which the disperse dyes are selected from C.I. Disperse Yellow 211; C.I. Disperse Blue 148, C.I. Disperse Red 73, C.I. Disperse Red 105 and the dye of formula I ##STR4##
Claim 7
Dependent Claim
15 words
A method according to claim 1, in which the polyester substrate is dyed by exhaust.
Claim 8
Dependent Claim
123 words
A dyebath containing a mixture of at least 2 disperse dyes, said mixture consisting of disperse dyes having each (i) a degree of adsorption A≧90% after 5 minutes at 130° C. and ≧90% after 20 minutes at 130° C. for a standard dyeing depth of 4×1/1, the starting dyeing temperature being 70° C. and the heating rate 3° C./minute, (ii) a diffusion coefficient D at 130° C. ≧1.6.10 -10 cm 2 .sec -1 (iii) a ratio C.°/RTT≧14 wherein C.° is the saturation concentration in mg dye per g substrate and RTT is the dye concentration in mg per g substrate required for the standard dyeing depth 1/1, and (iv) a kinetic parameter Z≧1.6.10 -4 wherein Z=k.C.°/RTT.sub.√D wherein k=1 cm -1 sec 1/2 .
Claim 9
Dependent Claim
123 words
A dyebath containing a mixture of at least 2 disperse dyes, said mixture consisting of disperse dyes having each (i) a degree of adsorption A≧90% after 5 minutes at 130° C. and ≧90% after 20 minutes at 130° C. for a standard dyeing depth of 4×1/1, the starting dyeing temperature being 70° C. and the heating rate 3° C./minute, (ii) a diffusion coefficient D at 130° C. ≧1.6.10 -10 cm 2 .sec -1 (iii) a ratio C.°/RTT≧14 wherein C.° is the saturation concentration in mg dye per g substrate and RTT is the dye concentration in mg per g substrate required for the standard dyeing depth 1/1, and (iv) a kinetic parameter Z≧1.6.10 -4 wherein Z=k.C.°/RTT.sub.√D wherein k=1 cm -1 sec 1/2 .
Claim 10
Dependent Claim
23 words
A method according to claim 2 wherein, for each disperse dye, D≧1.8.10 -10 cm 2 .sec -1 , C.°/RTT≧16 and Z≧1.8.10 -4 .
Claim 11
Dependent Claim
19 words
A method according to claim 1 wherein the liquor to goods ratio is in the range 0.2:1 to 100:1.
Claim 12
Dependent Claim
19 words
A method according to claim 1 wherein the dyeing is effected at a temperature of 120° to 140° C.
Claim 13
Dependent Claim
24 words
A method according to claim 10 wherein the dyeing is effected at a temperature of 120° to 130° C. for 5 to 30 minutes.
Claim 14
Dependent Claim
23 words
A method according to claim 11 which further comprises rinsing and drying the material which has been dyed for 5 to 30 minutes.
Claim 15
Dependent Claim
16 words
A method according to claim 10 wherein there is no reductive afterclearing of the dyed substrate.
Claim 16
Dependent Claim
19 words
A method according to claim 9 wherein the liquor to goods ratio is in the range 1:1 to 15:1.
Claim 17
Dependent Claim
19 words
A method according to claim 6 wherein the dyeing is effected at a temperature of 120° to 140° C.
Claim 18
Dependent Claim
24 words
A method according to claim 15 wherein the dyeing is effected at a temperature of 120° to 130° C. for 5 to 30 minutes.
Claim 19
Dependent Claim
16 words
A method according to claim 16 wherein there is no reductive afterclearing of the dyed substrate.
Claim 20
Dependent Claim
19 words
A method according to claim 16 wherein the liquor to goods ratio is in the range 1:1 to 15:1.
Claim 21
Dependent Claim
51 words
A method according to claim 16 wherein, for each disperse dye, A is ≧70% after 10 minutes at 120° C.,≧80% after 5 minutes at 125° C., ≧90% after 5 minutes at 130° C. and ≧95% after 20 minutes at 130%C., D≧1.8.10 -10 cm 2 .sec -1 C.°/RTT≧16 and Z≧1.8.10 -4 .
Claim 22
Dependent Claim
53 words
A dyebath according to claim 7 wherein, for each disperse dye, A is ≧70% after 10 minutes at 120° C., ≧80% after 5 minutes at 125° C., ≧90% after 5 minutes at 130° C., and ≧95% after 20 minutes at 130° C., D≧1.8.10 -10 cm 2 .sec -1 C.°/RTT≧16 and Z≧1.8.10 -4 .
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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