US3930795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the level dyeing of wool
Assignee: Hoechst AG
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Filing: 1973-09-06
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Granted: 1976-01-06
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Expires: 1993-09-06
Abstract
Abstract Process for the level dyeing of wool, having an anti-felting finish consisting of a coating layer of polyimine or polyamine resin, according to the exhaustion method with reactive dyestuffs which contain two or more sulfonic acid or sulfonate groups -- without considering the sulfonic acid or sulfonate groups which may be contained in the fiber-reactive groupings -- in the molecule or with conbinations of such dyestuffs having a different absorbing capacity from an aqueous bath at elevated temperature, in which process benzene sulfonic acids, alkylbenzene sulfonic acids, naphthalene sulfonic acids, alkylnaphthalene sulfonic acids or the condensation products of naphthalene sulfonic acids with formaldehyde or cresols are added to the dyeing liquor.
Inventors
- 👤 Hermann Fuchs
- 👤 Hermann-Heinz Konrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:13
CPC Classifications
C; C09; C09B; C09B62/00; D; D06; D06P; D06P1/00; D06P1/44; D06P1/52; D06P1/5264; D06P1/5278; D06P1/62; D06P1/621; D06P1/622; D06P1/625; D06P3/00; D06P3/02; D06P3/04; D06P3/10; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
138 words
A process for the level dyeing of wool, having an anti-felting finish consisting of a coating layer of polyimine or of polyamine resin, according to the exhaustion method, with reactive dyestuffs which contain two or more sulfonic acid or sulfonate groups, other than sulfonic acid or sulfonate groups contained in the fiber-reactive groupings, which process comprises: carrying out the dyeings with a dyestuff or with a combination of dyestuffs having different absorbing capacity, from an aqueous bath at elevated temperature and adding at least one compound of the formula ##SPC23## wherein X is hydrogen or the radical of the formula --SO 3 (H,Na), R 1 is alkyl having 2 to 14 carbon atoms, R 2 is hydrogen or alkyl having 2 to 14 carbon atoms and A is a bridge-member of the formula --CH 2 -- or ##SPC24##
Claim 2
Dependent Claim
138 words
A process for the level dyeing of wool, having an anti-felting finish consisting of a coating layer of polyimine or of polyamine resin, according to the exhaustion method, with reactive dyestuffs which contain two or more sulfonic acid or sulfonate groups, other than sulfonic acid or sulfonate groups contained in the fiber-reactive groupings, which process comprises: carrying out the dyeings with a dyestuff or with a combination of dyestuffs having different absorbing capacity, from an aqueous bath at elevated temperature and adding at least one compound of the formula ##SPC23## wherein X is hydrogen or the radical of the formula --SO 3 (H,Na), R 1 is alkyl having 2 to 14 carbon atoms, R 2 is hydrogen or alkyl having 2 to 14 carbon atoms and A is a bridge-member of the formula --CH 2 -- or ##SPC24##
Claim 3
Dependent Claim
35 words
A process as claimed in claim 1, wherein the compounds of the formulae I, II or III are used in amounts of from 0.2 to 2 %, calculated on the weight of the dry wool.
Claim 4
Dependent Claim
35 words
A process as claimed in claim 2, wherein the compounds of the formulae I, II or III are used in amounts of from 0.5 to 1 %, calculated on the weight of the dry wool.
Claim 5
Dependent Claim
48 words
A process as claimed in claim 1, wherein an alkali-yielding agent is allowed to act on the dyeings in the same bath in an amount capable of changing the pH of the liquor gradually from the acid to the neutral range in the course of the after-treatment operation.
Claim 6
Dependent Claim
14 words
A process as claimed in claim 4, wherein the alkali-yielding agent is sodium trichloroacetate.
References Cited (Backward Citations)
US2643958A
Cited
US3278253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |