US4304567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the pad-dyeing of textile webs of cellulose fibers
Assignee: Hoechst AG
•
Filing: 1980-05-07
•
Granted: 1981-12-08
•
Expires: 2000-05-07
Abstract
Abstract A process for the pad-dyeing of textile webs, especially tubular knitted fabrics, which consist totally or partially of cellulose fibers, wherein the textile material is padded on a padder with an aqueous liquor of reactive dyestuffs, alkalis for their fixation and wetting agents, said liquor additionally containing polymers or copolymers of acrylic acid amide in aqueous solution, in order to avoid difficulties with regard to an even dye penetration and uniform squeezed edges, and the dyestuffs are fixed according to the cold-dwell dyeing process.
Inventors
- 👤 Hans J. Ballmann
- 👤 Hans-Ulrich von der Eltz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:25
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/52; D06P1/5207; D06P1/525; D06P1/5257; D06P3/00; D06P3/58; D06P3/60; D06P3/66; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/918
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
113 words
In a process for the pad-dyeing of a textile web containing or consisting of cellulose fibers with one or more reactive dyestuffs according to a cold-dwell dyeing process in which the textile web is padded on the padder with an aqueous liquor at room temperature, the liquor containing one or more reactive dyestuffs, alkali for fixing same and one or more wetting agents, the improvement which comprises incorporating in said liquor a polymeric component selected from the group consisting of homopolymers and copolymers of acrylic acid amide and mixtures of the foregoing, said polymeric component being incorporated in an amount of from 0.4 to 5 g/l in the form of an aqueous solution.
Claim 2
Dependent Claim
113 words
In a process for the pad-dyeing of a textile web containing or consisting of cellulose fibers with one or more reactive dyestuffs according to a cold-dwell dyeing process in which the textile web is padded on the padder with an aqueous liquor at room temperature, the liquor containing one or more reactive dyestuffs, alkali for fixing same and one or more wetting agents, the improvement which comprises incorporating in said liquor a polymeric component selected from the group consisting of homopolymers and copolymers of acrylic acid amide and mixtures of the foregoing, said polymeric component being incorporated in an amount of from 0.4 to 5 g/l in the form of an aqueous solution.
Claim 3
Dependent Claim
27 words
A process as claimed in claim 1, wherein said polymeric component is selected from the group consisting of linear homopolymers and branched homopolymers of acrylic acid amide.
Claim 4
Dependent Claim
73 words
A process as claimed in claim 1, wherein said polymeric component is selected from the group consisting of copolymers of acrylic acid amide and semiesters of maleic acid with polyglycol ethers of natural or synthetic fatty alcohols of from 12 to 18 carbon atoms with from 5 to 10 mols of ethylene oxide per mol of fatty alcohol, in a weight ratio of from 1:0.05 to 1:0.5, calculated on the acrylic acid amide.
Claim 5
Dependent Claim
43 words
A process as claimed in claim 1, wherein the polymeric component is selected from the group consisting of copolymers of acrylic acid amide and acrylamido-lower alkane sulfonic acid in a weight ratio of from 1:0.05 to 1:0.5, calculated on the acrylic acid amide.
Claim 6
Dependent Claim
40 words
A process as claimed in claim 1, wherein said polymeric component is selected from the group consisting of copolymers of acrylic acid amide and N-vinyl-N-methylacetamide in a weight ratio of from 1:0.05 to 1:0.5, calculated on the acrylic acid amide.
Claim 7
Dependent Claim
39 words
A process as claimed in claim 1, wherein the polymeric component is a mixture of said homopolymers, a mixture of said copolymers or a mixture of one or more of said homopolymers and one or more of said copolymers.
Claim 8
Dependent Claim
32 words
A process as claimed in claim 1, wherein to said polymeric component ε-caprolactam is added in a weight ratio of from 1:0.5 to 1:1, calculated on the weight of the polymeric component.
Claim 9
Dependent Claim
23 words
A process as claimed in claim 1, wherein the polymeric component has a molecular weight of from 1.0×10 6 to 2.5×10 6 .
Claim 10
Dependent Claim
22 words
A process as claimed in claim 1, wherein the textile web is a tubular knitted fabric containing or consisting of cellulose fibers.
References Cited (Backward Citations)
US3198595A
Cited
US3957427A
Cited
GB1523408A
Cited
DE2738494A1
Cited
GB2017763A
Cited
US4242090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-07 | 1985-06-08 | 1985-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-07 | 1989-06-08 | 1989-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-07 | 1993-06-08 | 1993-12-08 | $7700.00 | Window Closed / Lapsed |