US4121898A
Expired / Lapsed
US
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Process for dyeing synthetic polyamide fibre materials
Assignee: Bayer AG
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Filing: 1977-07-25
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Granted: 1978-10-24
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Expires: 1997-07-25
Abstract
Abstract In a process for dyeing synthetic polyamide fibre materials with metal-free acid dyestuffs a dye liquor is used which contains compounds of the formula ##STR1## wherein R 1 represents an alkyl and/or alkenyl radical with 12-22 carbon atoms, R 2 represents hydrogen and/or methyl, m represents 0 or 1, n represents 2 or 3 and The sum of x + y + z represents a number from 10-30, and compounds of the formula R.sub.3 -- B -- X wherein R 3 represents an alkyl radical with 12-22 carbon atoms and/or a phenyl or/and naphthyl radical which contains a total of 12-22 carbon atoms and is substituted by one or more alkyl radicals, B represents --O--SO 2 -- and/or --SO 3 and X represents hydrogen or an ammonium, alkali metal, alkaline earth metal, mono-, di- or tri-alkyl-ammonium or hydroxyalkylammonium ion with, in each case, 1-4 carbon atoms in the alkyl radical, or represents a cyclohexyl-ammonium ion.
Inventors
- 👤 Helmut Kirschnek
- 👤 Karlhans Jakobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:16
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/60; D06P1/607; D06P1/6076; D06P1/62; D06P1/621; D06P3/00; D06P3/02; D06P3/04; D06P3/24; D06P3/241; Y; Y10; Y10S; Y10S534/00; Y10S534/01; Y10S8/00; Y10S8/21; Y10S8/904; Y10S8/92; Y10S8/924
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
144 words
Process for producing uniform, level dyeings of increased fastness and reduced drain effect in the dyeing of synthetic polyamide fibre materials with two or more metal-free acid dyestuffs which have different rates of absorption into said polyamide fiber material comprising dyeing said polyamide materials in an aqueous dye liquor consisting essentially of water, said metal-free acid dyestuffs, a cationic compound of the formula: ##STR16## wherein R 1 represents alkyl or alkenyl with 12-22 carbon atoms; R 2 represents hydrogen or methyl; m represents 0 or 1; n represents 2 or 3; and the sum of x + y + z represents a number from 10-30; and an anionic compound of the formula: ##STR17## wherein R 3 represents an substituted alkyl radical with 10-14 C atoms; said cationic and anionic compounds being present in the dye liquor in a molar ratio of 0.6:1 to 1:0.6.
Claim 2
Dependent Claim
144 words
Process for producing uniform, level dyeings of increased fastness and reduced drain effect in the dyeing of synthetic polyamide fibre materials with two or more metal-free acid dyestuffs which have different rates of absorption into said polyamide fiber material comprising dyeing said polyamide materials in an aqueous dye liquor consisting essentially of water, said metal-free acid dyestuffs, a cationic compound of the formula: ##STR16## wherein R 1 represents alkyl or alkenyl with 12-22 carbon atoms; R 2 represents hydrogen or methyl; m represents 0 or 1; n represents 2 or 3; and the sum of x + y + z represents a number from 10-30; and an anionic compound of the formula: ##STR17## wherein R 3 represents an substituted alkyl radical with 10-14 C atoms; said cationic and anionic compounds being present in the dye liquor in a molar ratio of 0.6:1 to 1:0.6.
Claim 3
Dependent Claim
24 words
The process of claim 1, wherein the polyamide materials are dyed for at least about 1 hour at a temperature of about 100° C.
Claim 4
Dependent Claim
33 words
Process according to claim 1, characterized in that dye liquors which contain the cationic compounds and anionic compounds in a total amount of 0.1-5 parts per 1,000 parts of dye liquor are used.
Claim 5
Dependent Claim
24 words
Process according to claim 1, wherein the cationic component employed is a compound of the formula [CH.sub.3 --(CH.sub.2).sub.7 --CH.sub.2 ].sub.2 >CH--N<[(CH.sub.2 --CH.sub.2 --O--).sub.10 H].sub.2
Claim 6
Dependent Claim
17 words
Process according to claim 1, wherein the cationic component employed is a compound of the formula ##STR18##
Claim 7
Dependent Claim
37 words
Process according to claim 1, wherein the cationic component employed is a compound of the formula CH.sub.3 --(CH.sub.2).sub.7 --CH═CH--(CH.sub.2).sub.7 --CH.sub.2 --N<[(CH.sub.2 --CH.sub.2 --O--).sub.5,5 H].sub.2 and the sodium salt of dodecylbenzenesulphonic acid in a molar ratio of 1:0.9.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-23 | 1982-04-24 | 1982-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-23 | 1986-04-24 | 1986-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-23 | 1990-04-24 | 1990-10-24 | $7700.00 | Window Closed / Lapsed |