US4255154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the level dyeing of polyester material
Assignee: BASF Corp
•
Filing: 1979-06-18
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Granted: 1981-03-10
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Expires: 1999-06-18
Abstract
Abstract Described is a process for the level dyeing of polyester material by the aqueous exhaust method at temperatures above 100 DEG C., which comprises the use of an aqueous dye liquor which contains at least one migrating disperse dye as well as further ingredients. As migrating disperse dye, preferably a dye is used which has a diffusion coefficient Do at 130 DEG C. of 2 to 10x10-10 cm2/sec, a distribution coefficient K at 130 DEG C. of 20 to 500 1/kg, and a migration half-life t/2 less then 50 minutes.
Inventors
- 👤 Jacques Zurbuchen
- 👤 Paul Dussy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 02:53
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/34; D06P3/52; D06P3/54; Y; Y10; Y10S; Y10S534/00; Y10S534/01
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
80 words
In a process for the level dyeing of polyester material by the exhaustion of three or more disperse dyes from an aqueous liquor at a temperature above 100° C., the improvement wherein all of the selected disperse dyes are migrating disperse dyes, having a diffusion coefficient Do at 130° C. of 2 to 10×10 -10 cm 2 /sec, a distribution coefficient K at 130° C. of 20 to 500 1/kg, and a migration half-life t/2 of less than 50 minutes.
Claim 2
Dependent Claim
80 words
In a process for the level dyeing of polyester material by the exhaustion of three or more disperse dyes from an aqueous liquor at a temperature above 100° C., the improvement wherein all of the selected disperse dyes are migrating disperse dyes, having a diffusion coefficient Do at 130° C. of 2 to 10×10 -10 cm 2 /sec, a distribution coefficient K at 130° C. of 20 to 500 1/kg, and a migration half-life t/2 of less than 50 minutes.
Claim 3
Dependent Claim
53 words
An aqueous dye liquor comprising no non-migrating dyes and at least three migrating disperse dyes, having a diffusion coefficient Do at 130° C. of 2 to 10×10 -10 cm 2 /sec, a distribution coefficient K at 130° C. of 20 to 500 1/kg, and a migration half-life t/2 of less than 50 minutes.
Claim 4
Dependent Claim
53 words
An aqueous dye liquor comprising no non-migrating dyes and at least three migrating disperse dyes, having a diffusion coefficient Do at 130° C. of 2 to 10×10 -10 cm 2 /sec, a distribution coefficient K at 130° C. of 20 to 500 1/kg, and a migration half-life t/2 of less than 50 minutes.
Claim 5
Dependent Claim
56 words
Polyester material, dyed with at least three migrating disperse dyes, having a diffusion coefficient Do at 130° C. of 2 to 10×10 -10 cm 2 /sec, a distribution coefficient K at 130° C. of 20 to 500 1 kg, and a migration half-life t/2 of less than 50 minutes, in the absence of any non-migrating dyestuff.
Claim 6
Dependent Claim
56 words
Polyester material, dyed with at least three migrating disperse dyes, having a diffusion coefficient Do at 130° C. of 2 to 10×10 -10 cm 2 /sec, a distribution coefficient K at 130° C. of 20 to 500 1 kg, and a migration half-life t/2 of less than 50 minutes, in the absence of any non-migrating dyestuff.
Claim 7
Dependent Claim
52 words
A process according to claim 1 wherein at least one of the disperse dyes has a diffusion coefficient Do at 130° C. of 2.5 to 10×10 -10 cm 2 /sec, a distribution coefficient K at 130° C. of 60 to 350 1/kg, and a migration half-life t/2 of less than 30 minutes.
Claim 8
Dependent Claim
17 words
A process according to claim 2 wherein the dyes constitute a trichromatic system of migrating disperse dyes.
Claim 9
Dependent Claim
64 words
A process according to claim 1 wherein the dyes are two or more of the following migrating disperse dyes: ##STR20## ______________________________________
CI Disperse Blue 26
(methylated mixture of Do = 4,8
diaminoanthrarufine and
K = 315
diaminochrysazine t/2 = 22
CI Disperse Blue 95
(mixture of diaminoan- Do = 4,8
thrarufine and diamino-
K = 315
chrysazine, treated with
t/2 = 22
formaldehyde)
______________________________________
Claim 10
Dependent Claim
13 words
A process according to claim 1 wherein the aqueous liquor contains no carrier.
Claim 11
Dependent Claim
17 words
A process according to claim 1 wherein the temperature is between 110° and 140° C. under pressure.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-09 | 1984-09-08 | 1985-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-09 | 1988-09-08 | 1989-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-09 | 1992-09-08 | 1993-03-10 | $7700.00 | Window Closed / Lapsed |