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Patent US4181668A successfully refreshed from Google Patents.
US4181668A
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Anthraquinone dyes
Assignee: BASF SE
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Filing: 1978-11-16
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Granted: 1980-01-01
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Expires: 1998-11-16
Abstract
Abstract Anthraquinone dyes of the formula ##STR1## where R is C 1 -C 10 -alkyl, C 5 -C 8 -cycloalkyl, alkoxyalkyl of a total of 3 to 11 carbon atoms, phenoxyalkyl, where alkyl is of 2 to 4 carbon atoms, or phenyl-C 1 -C 4 -alkyl. On synthetic fibers and blends thereof with cellulosic fibers, the dyes give brilliant clear blues. The dyes are particularly suitable for transfer printing onto synthetic fibers and give high color yields. The transfer prints obtained have excellent fastness characteristics.
Inventors
- 👤 Wolfgang Elser
- 👤 Ernst Hartwig
- 👤 Manfred Ruske
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:54
CPC Classifications
C; C09; C09B; C09B1/00; C09B1/16; C09B1/20; C09B1/22; D; D06; D06P; D06P5/00; D06P5/003; D06P5/004; D06P5/006; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
45 words
An anthraquinone dye of the general formula ##STR11## where R is linear or branched C 1 -C 10 -alkyl, C 5 -C 8 -cycloalkyl, alkoxyalkyl of a total of 3 to 11 carbon atoms, phenoxy-C 2 -C 4 -alkyl or phenyl-C 1 -C 4 -alkyl.
Claim 2
Dependent Claim
45 words
An anthraquinone dye of the general formula ##STR11## where R is linear or branched C 1 -C 10 -alkyl, C 5 -C 8 -cycloalkyl, alkoxyalkyl of a total of 3 to 11 carbon atoms, phenoxy-C 2 -C 4 -alkyl or phenyl-C 1 -C 4 -alkyl.
Claim 3
Dependent Claim
19 words
An anthraquinone dye as claimed in claim 1, where R is linear or branched C 1 -C 6 -alkyl.
Claim 4
Dependent Claim
27 words
An anthraquinone dye as claimed in claim 1, where R is linear or branched C 1 -C 4 -alkyl, C 1 -C 4 -alkoxyethyl, benzyl or cyclohexyl.
Claim 5
Dependent Claim
14 words
An anthraquinone dye as claimed in claim 1, where R is isopropyl or n-butyl.
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) | 1982-12-31 | 1983-07-02 | 1984-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-31 | 1987-07-02 | 1988-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-31 | 1991-07-02 | 1992-01-01 | $7700.00 | Window Closed / Lapsed |