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Patent US4161601A successfully refreshed from Google Patents.
US4161601A
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Methine dyes from 1-[2-[(2-benzothiazolyl)thio]alkyl]-1,2,3,4-tetrahydro-2,2,4,7-tetramethylquinoline compounds
Assignee: Novartis Corp
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Filing: 1977-05-31
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Granted: 1979-07-17
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Expires: 1997-05-31
Abstract
Abstract Methine dyes from tetrahydroquinoline compounds containing N-thioether substituents, in general produce bright yellow shades when applied to polyester fabrics by conventional dyeing procedures, have improved properties such as dyeability, fastness to light, resistance to sublimation, insensitivity to pH changes, and dye at the boil and under pressure to the same depth of shade. These compounds are particularly useful in the thermal fixation technique for dyeing polyester materials.
Inventors
- 👤 Clarence A. Coates, Jr.
- 👤 Max A. Weaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:48
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/02; C07D215/04; C07D215/06; C09; C09B; C09B23/00; C09B23/0091; C09B23/14; C09B23/143
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
93 words
Compounds of the formula: ##STR128## wherein X is selected from cyano, carbamoyl, lower alkyl carbamoyl, lower alkoxycarbonyl, lower alkylsulfonyl and arylsulfonyl; R, R 1 , and R 2 are independently selected from hydrogen and lower alkyl; R 3 is selected from hydrogen, lower alkyl, lower alkoxy and halogen and n is 0, 1 or 2; R 4 is lower alkylene; R 5 is benzothiazolyl which may be substituted with up to two groups independently selected from Cl, Br, NO 2 , lower alkyl, lower alkylamino, lower alkanoylamino, lower alkoxy, hydroxy, cyano, and -SCN.
Claim 2
Dependent Claim
93 words
Compounds of the formula: ##STR128## wherein X is selected from cyano, carbamoyl, lower alkyl carbamoyl, lower alkoxycarbonyl, lower alkylsulfonyl and arylsulfonyl; R, R 1 , and R 2 are independently selected from hydrogen and lower alkyl; R 3 is selected from hydrogen, lower alkyl, lower alkoxy and halogen and n is 0, 1 or 2; R 4 is lower alkylene; R 5 is benzothiazolyl which may be substituted with up to two groups independently selected from Cl, Br, NO 2 , lower alkyl, lower alkylamino, lower alkanoylamino, lower alkoxy, hydroxy, cyano, and -SCN.
Claim 3
Dependent Claim
35 words
The compounds of claim 1 wherein R, R 1 , R 2 , and R 3 are individually selected from hydrogen and methyl, X is cyano, R 4 is ethylene, and R 5 is 2-benzothiazolyl.
Claim 4
Dependent Claim
10 words
The compound according to claim 1 having the formula ##STR129##
References Cited (Backward Citations)
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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) | 1982-07-16 | 1983-01-15 | 1983-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-16 | 1987-01-15 | 1987-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-16 | 1991-01-15 | 1991-07-17 | $7700.00 | Window Closed / Lapsed |