US3920702A
Expired / Lapsed
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Anthraquinone dyestuffs
Assignee: Bayer AG
•
Filing: 1973-08-09
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Granted: 1975-11-18
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Expires: 1993-08-09
Abstract
Abstract Anthraquinone dyestuffs of the formula IN WHICH Y denotes a direct bond or an alkylene group which can be interrupted by hetero-atoms or sulphone groups, A denotes an alkylene group of the formula B denotes a direct bond or a group of the formula R1-R7 denotes hydrogen, alkyl or aryl, X1 and X2 denote oxygen or sulphur and Z1 and Z2 denote hydrogen or halogen and their use for the dyeing and printing of synthetic fibre materials. Dyeings obtained are distinguished by good build-up, high colour yield and excellent fastness properties, especially good fastness to light, sublimation and wet processing.
Inventors
- 👤 Friedrich Wilhelm Krock
- 👤 Rutger Neeff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:17
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/90; D06P1/908; C; C09; C09B; C09B1/00; C09B1/50; C09B1/503; C09B1/54; C09B1/545; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/921; Y10S8/922
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
5 words
ANTHRAQUINONE DYESTUFF OF THE FORMULA
Claim 2
Dependent Claim
5 words
ANTHRAQUINONE DYESTUFF OF THE FORMULA
Claim 3
Dependent Claim
9 words
The anthraquinone dyestuff of claim 1 of the formula
Claim 4
Dependent Claim
9 words
The anthraquinone dyestuff of claim 1 of the formula
Claim 5
Dependent Claim
9 words
The anthraquinone dyestuff of claim 1 of the formula
Claim 6
Dependent Claim
9 words
The anthraquinone dyestuff of claim 1 of the formula
Claim 7
Dependent Claim
9 words
The anthraquinone dyestuff of claim 1 of the formula
Claim 8
Dependent Claim
9 words
The anthraquinone dyestuff of claim 1 of the formula
Claim 9
Dependent Claim
9 words
The anthraquinone dyestuff of claim 1 of the formula
Claim 10
Dependent Claim
11 words
Anthraquinone dyestuff of claim 1 wherein X1 and X2 are oxygen.
Claim 11
Dependent Claim
5 words
Anthraquinone dyestuff of the formula
Claim 12
Dependent Claim
5 words
Anthraquinone dyestuff of the formula
Claim 13
Dependent Claim
5 words
Anthraquinone dyestuff of the formula
Claim 14
Dependent Claim
5 words
Anthraquinone dyestuff of the formula
Claim 15
Dependent Claim
33 words
Anthraquinone dyestuff of claim 11 wherein Y is C1-C4-alkylene and R2 and R3, independently of each other, are hydrogen, C1-C4-alkyl, or phenyl; and R2 and R3, when joined together, are -(CH2)4- or -(CH2)5-.
Claim 16
Dependent Claim
39 words
Anthraquinone dyestuff of claim 11 wherein Y is C1-C4-alkylene, R1 is hydrogen, methyl, or ethyl; and R2 and R3 independently of each other, are hydrogen, C1-C4-alkyl, or phenyl; and R2 and R3, when joined together, are -(CH2)4- or -(CH2)5-.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |