US3630663A
Expired / Lapsed
US
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Process for dyeing anionic modified synthetic fibers in dye baths containing an organic nitrogen compound
Assignee: Bayer AG
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Filing: 1969-02-12
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Granted: 1971-12-28
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Expires: 1989-02-12
Abstract
Abstract Synthetic fibers containing anionic groups, e.g. polyacrylonitrile modified with sulfonic acid groups, are dyed by exhaustion in a dyebath comprising: A. hydrocarbon chloride solvent; B. 0.1 to 4% of water based on the solvent; C. a basic dyestuff soluble in hydrocarbon chloride solvent; and D. an organic nitrogen compound containing at least 12 carbon atoms, e.g. a fatty amine such as dodecylamine.
Inventors
- 👤 Dietrich Hildebrand
- 👤 Gunter Briedbach
- 👤 Helmut Kirschnek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:04
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/90; D06P1/92; D06P1/922; D06P1/924; D06P1/44; D06P1/64; D06P1/642; D06P1/645
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
43 words
The process of claim 1, said hydrocarbon chloride soluble basic dyestuff being present in the form of a hydrocarbon chloride soluble dye salt with an acid selected from the group consisting of an organic acid and an acid ester of an inorganic acid.
Claim 2
Dependent Claim
42 words
The process of claim 1, said hydrocarbon chloride soluble basic dyestuff being present in the form of a hydrocarbon chloride soluble adduct with an acid selected from the group consisting of an organic acid and an acid ester of an inorganic acid.
Claim 3
Dependent Claim
109 words
A process for dyeing anionic group containing Fiber materials selected from the group consisting of polyesters, polyamides and polyacrylonitrile, which comprises dyeing said fiber materials by exhaustion in a dyeing bath comprising A. a hydrocarbon chloride solvent; B. 0.1 to 4 percent by weight, based on the hydrocarbon chloride solvent of water; C. a hydrocarbon chloride soluble basic dyestuff; D. an organic nitrogen compound selected from the group consisting of an amine, an amide, an amine oxide, and mixtures thereof, said amine, amide and amine oxide having at least 12 carbon atoms; and E. 0.1 to 2 percent by weight, based on the hydrocarbon chloride solvent of an emulsifier.
Claim 4
Dependent Claim
43 words
The process of claim 4, said hydrocarbon chloride soluble basic dyestuff being present in the form of a hydrocarbon chloride soluble dye salt with an acid selected from the group consisting of an organic acid and an acid ester of an inorganic acid.
Claim 5
Dependent Claim
42 words
The process of claim 4, said hydrocarbon chloride soluble basic dyestuff being present in the form of a hydrocarbon chloride soluble adduct with an acid selected from the group consisting of an organic acid and an acid ester of an inorganic acid.
Claim 6
Dependent Claim
111 words
A process for dyeing anionic group containing fiber materials selected from the group consisting of polyesters, polyamides, and polyacrylonitrile, which comprises dyeing said fiber materials by exhaustion in a dyeing bath comprising A. a hydrocarbon chloride solvent; B. 0.1 to 4 percent by weight, based on the hydrocarbon chloride solvent of water; C. a hydrocarbon chloride soluble basic dyestuff; D. an organic nitrogen compound selected from the group consisting of an amine, an amide, an amine oxide, and mixtures thereof, said amine, amide, and amine oxide having at least 12 carbon atoms; and E. 0.1 to 2 percent by weight, based on the hydrocarbon chloride solvent of a hydrotropic organic solvent.
Claim 7
Dependent Claim
43 words
The process of claim 7, said hydrocarbon chloride soluble basic dyestuff being present in the form of a hydrocarbon chloride soluble dye salt with an acid selected from the group consisting of an organic acid and an acid ester of an inorganic acid.
Claim 8
Dependent Claim
42 words
The process of claim 7, said hydrocarbon chloride soluble basic dyestuff being present in the form of a hydrocarbon chloride soluble adduct with an acid selected from the group consisting of an organic acid and an acid ester of an inorganic acid.
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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |