US3881866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester or polyacrylonitrile fibers dyed by quaternized or unquarternized azoanilino-toluene sulfonamidoalkyleneamine
Assignee: American Aniline Products Inc
•
Filing: 1972-11-03
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Granted: 1975-05-06
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Expires: 1992-11-03
Abstract
Abstract Basic azo dyes are made by coupling an appropriate diazotized benzenoid or heterocyclic base with an N-dialkylaminoalkylene ( Alpha (N-alkylanilino))m- or p-toluenesulfonamide. Quarternization of the pendant dialkylamino group in the coupler may be carried out before or after coupling if desired to yield quaternary structures. The unquaternized structures, when properly dispersed, are applied to polyesters with excellent substantivity, outstanding fastness to sublimation and good fastness to light. The disperse unquaternized dyes are applied to polyacrylonitrile fabrics from a neutral or acidic bath; the water soluble quaternary structures are especially useful for coloring acrylic fibers.
Inventors
- 👤 Edgar E Renfrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:15
CPC Classifications
C; C09; C09B; C09B44/00; C09B44/02; C09B44/04; C09B29/00; C09B29/06; C09B29/08; C09B29/0805; C09B29/0807; C09B29/0809; C09B29/0811; C09B29/0821; D; D06; D06P; D06P1/00; D06P1/16; D06P1/18; D06P3/00; D06P3/70; D06P3/72; D06P3/76; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922; Y10S8/927
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
11 words
A POLYESTER TEXTILE MATERIAL DYED WITH A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
11 words
A POLYESTER TEXTILE MATERIAL DYED WITH A COMPOUND OF THE FORMULA:
Claim 3
Dependent Claim
12 words
The polyester of claim 1 wherein said compound is of the formula:
Claim 4
Dependent Claim
12 words
The polyester of claim 1 wherein said compound is of the formula:
Claim 5
Dependent Claim
12 words
The polyester of claim 1 wherein said compound is of the formula:
Claim 6
Dependent Claim
12 words
The polyester of claim 1 wherein said compound is of the formula:
Claim 7
Dependent Claim
12 words
The polyester of claim 1 wherein said compound is of the formula:
Claim 8
Dependent Claim
12 words
The polyester of claim 1 wherein said compound is of the formula:
Claim 9
Dependent Claim
11 words
A polyacrylonitrile textile material dyed with a compound of the formula:
Claim 10
Dependent Claim
11 words
A polyacrylonitrile textile material dyed with a compound of the formula:
Claim 11
Dependent Claim
12 words
The polyacrylonitrile of claim 8 wherein said compound is of the formula:
Claim 12
Dependent Claim
12 words
The polyacrylonitrile of claim 8 wherein said compounD is of the formula:
Claim 13
Dependent Claim
12 words
The polyacrylonitrile of claim 8 wherein said compound is of the formula:
Claim 14
Dependent Claim
12 words
The polyacrylonitrile of claim 8 wherein said compound is of the formula:
Claim 15
Dependent Claim
12 words
The polyacrylonitrile of claim 8 wherein said compound is of the formula:
Claim 16
Dependent Claim
12 words
The polyacrylonitrile of claim 8 wherein said compound is of the formula:
References Cited (Backward Citations)
FR1497149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |