US3873265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vat or reactive dyes or mixtures thereof and acrylamide or methylene bis acrylamide in alkaline crosslinking and dyeing
Assignee: Hoechst AG
•
Filing: 1973-02-02
•
Granted: 1975-03-25
•
Expires: 1993-02-02
Abstract
Abstract A process for the simultaneous dyeing and crease-proof finishing of textile material consisting of cellulose fibers or blends of cellulose fibers and polyester fibers by impregnating the textile material with an aqueous bath containing a reactive or vat dyestuff or a disperse dyestuff and a reactive or vat dyestuff, N-methylol-acrylamide or N,N-dimethylol-methyl-bis-acrylamide or an ether thereof with an alkanol containing 1 to 3 carbon atoms as well as an acid catalyst, dry heating the material to condense the N-methylol group of the synthetic resin and optionally fixing the disperse dyestuff at the same time, and in a second fixation step simultaneously fixing the reactive or vat dyestuff and the ambivalent cross-linking agent in an alkaline medium, and then after-treating the material by washing operations.
Inventors
- 👤 Rolf Kleber
- 👤 Otto Smerz
- 👤 Gunther Trapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:08
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/0056; D06P1/0064; D06M; D06M13/00; D06M13/322; D06M13/402; D06M13/41; D06M13/412; D06P1/22; D06P1/44; D06P1/64; D06P1/642; D06P1/649; D06P1/6495; D06P3/00; D06P3/58; D06P3/60; D06P3/605; D06P3/6066; D06P3/66; D06P3/82; D06P3/8204; D06P3/8223; D06P3/8238; D06P3/8247; D06P3/8252; Y; Y10; Y10S; Y10S8/00; Y10S8/92
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
147 words
A PROCESS FOR THE SIMULTANEOUS DYEING AND CREASEPROOF FINISHING OF TEXTILE MATERIAL CONSISTING OF CELLULOSE FIBERS OR BLENDS OF CELLULOSE FIBERS AND POLYESTER FIBERS BY JOINT FIXATION OF DYESTUFFS AND SYNTHETIC RESIN PRECONDENSATES ON TEXTILES, WHICH PROCESS CONSISTS OF THE FOLLOWING STEPS: A. IMPREGNATING THE TEXTILE MATERIAL WITH AN AQUEOUS BATH THAT COMPRISES EITHER A REACTIVE OR VAT DYE-STUFF OR A MIXTURE OF A DISPERE DYESTUFF AND A REACTIVE OR VAT DYESTUFF, AND THAT COMPRISES AN AMBIVALENT CROSS-LINKING AGENT SELECTED ROM THE GROUP CONSISTING OF N-METHYLOLACRYLAMIDE, N,N-DIMETHYLOL-METHYLENE-BIS-ACRYLAMIDE, AND ETHERS THEREOF WITH AN ALKANOL CONTAINING 1 TO 3 CARBON ATOMS, AND AN ACID CATALYST, B. IN A FIRST FIXATION STEP, EXPOSING THE MATERIAL IN AN ACID MEDIUM TO DRY HEAT, C. IN A SECOND FIXATION STEP, TREATING THE TEXTILE MATERIAL IN AN ALKALINE MEDIUM, AND D. FINALLY, CARRYING OUT AN AFTER-TREATMENT OF THE MATERIAL BY A WASHING OPERATION.
Claim 2
Dependent Claim
147 words
A PROCESS FOR THE SIMULTANEOUS DYEING AND CREASEPROOF FINISHING OF TEXTILE MATERIAL CONSISTING OF CELLULOSE FIBERS OR BLENDS OF CELLULOSE FIBERS AND POLYESTER FIBERS BY JOINT FIXATION OF DYESTUFFS AND SYNTHETIC RESIN PRECONDENSATES ON TEXTILES, WHICH PROCESS CONSISTS OF THE FOLLOWING STEPS: A. IMPREGNATING THE TEXTILE MATERIAL WITH AN AQUEOUS BATH THAT COMPRISES EITHER A REACTIVE OR VAT DYE-STUFF OR A MIXTURE OF A DISPERE DYESTUFF AND A REACTIVE OR VAT DYESTUFF, AND THAT COMPRISES AN AMBIVALENT CROSS-LINKING AGENT SELECTED ROM THE GROUP CONSISTING OF N-METHYLOLACRYLAMIDE, N,N-DIMETHYLOL-METHYLENE-BIS-ACRYLAMIDE, AND ETHERS THEREOF WITH AN ALKANOL CONTAINING 1 TO 3 CARBON ATOMS, AND AN ACID CATALYST, B. IN A FIRST FIXATION STEP, EXPOSING THE MATERIAL IN AN ACID MEDIUM TO DRY HEAT, C. IN A SECOND FIXATION STEP, TREATING THE TEXTILE MATERIAL IN AN ALKALINE MEDIUM, AND D. FINALLY, CARRYING OUT AN AFTER-TREATMENT OF THE MATERIAL BY A WASHING OPERATION.
Claim 3
Dependent Claim
35 words
A process as claimed in claim 1, wherein the impregnated textile material is dried before the first fixation step at a temperature below the reaction temperature of the N-methylol groups of the ambivalent cross-linking agent.
Claim 4
Dependent Claim
26 words
A process as claimed in claim 1, wherein the first fixation step is carried out for half a minute to 10 minutes at 140*C to 240*C.
Claim 5
Dependent Claim
20 words
A process as claimed in claim 1, wherein the alkaline fixation step is carried out at a pH-value exceeding 10.
Claim 6
Dependent Claim
30 words
A process as claimed in claim 1, wherein the after-treatment is carried out in an acid washing liquor containing an oxyethylated castor oil or the dioleylester of an oxyethylated butane-diol-(1,4).
Claim 7
Dependent Claim
17 words
A process as claimed in claim 1, wherein the after-treatment is carried out stepwise in acid baths.
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) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |