US4252531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dyeing wool or nylon fibers
Assignee: BASF SE
•
Filing: 1979-02-26
•
Granted: 1981-02-24
•
Expires: 1999-02-26
Abstract
Abstract A process for dyeing textile materials, consisting of wool or nylon fibers, with anionic dyes in an aqueous liquor at up to 110° C., wherein dyeing is commenced at a pH of from 7 to 9 and from 0.2 to 5 parts by weight, per 1,000 parts by weight of liquor, of an ester of a saturated C 2 -C 4 -carboxylic acid with an alcohol having a tertiary amino group in the 2-position are added at the dyeing temperature to act as a pH regulator.
Inventors
- 👤 Manfred Daeuble
- 👤 Volkmar Weberndoerfer
- 👤 Hans G. Schulze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:22
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P1/00; D06P1/44; D06P1/64; D06P1/642; D06P1/645; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917; Y10S8/92; Y10S8/924
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
90 words
A process for dyeing a textile material consisting of wool and/or of nylon fibers with an anionic dye in an aqueous liquor at up to 110° C., wherein dyeing is commenced at a pH of from 7 to 9 and from 0.2 to 5 parts by weight, per 1,000 parts by weight of liquor, of an ester of a saturated C 2 -C 4 -carboxylic acid with an alcohol having a tertiary amino group in the 2-position to a hydroxy group are then added to act as a pH regulator.
Claim 2
Dependent Claim
90 words
A process for dyeing a textile material consisting of wool and/or of nylon fibers with an anionic dye in an aqueous liquor at up to 110° C., wherein dyeing is commenced at a pH of from 7 to 9 and from 0.2 to 5 parts by weight, per 1,000 parts by weight of liquor, of an ester of a saturated C 2 -C 4 -carboxylic acid with an alcohol having a tertiary amino group in the 2-position to a hydroxy group are then added to act as a pH regulator.
Claim 3
Dependent Claim
26 words
The process of claim 1, wherein the pH regulator used is the triester of a saturated C 2 -C 4 -carboxylic acid with triethanolamine or with
Claim 4
Dependent Claim
46 words
The process of claim 1, wherein the pH regulator used is the tetraacetate of the reaction product of 4 moles of ethylene oxide with ethylenediamine, the pentaacetate of the reaction product of diethylenetriamine with 5 moles of ethylene oxide, or the compound of the formula ##STR3##
Claim 5
Dependent Claim
13 words
The process of claim 1, wherein the pH regulator used is triethanolamine triacetate.
Claim 6
Dependent Claim
48 words
The process of claim 1, wherein the textile material is introduced into a dye-containing liquor which is at 80° to 100° C. and has a pH of from 7 to 9, the pH regulator is then added, and dyeing is carried out at from 80° to 95° C.
Claim 7
Dependent Claim
18 words
The process of claim 1, wherein the textile material dyed is wool which has an anti-felting surface finish.
Claim 8
Dependent Claim
18 words
The process of claim 1, wherein the textile material which is dyed is a wool or nylon velour.
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) | 1984-02-24 | 1984-08-25 | 1985-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-24 | 1988-08-25 | 1989-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-24 | 1992-08-25 | 1993-02-24 | $7700.00 | Window Closed / Lapsed |