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US4002425A
Expired / Lapsed
US
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Water-insoluble monoazo dyestuffs
Assignee: Cassella Farbwerke Mainkur AG
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Filing: 1975-07-18
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Granted: 1977-01-11
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Expires: 1995-07-18
Abstract
Abstract Dyestuffs of the formula: ##STR1## wherein R is A. ALKYL HAVING 3 TO 12 CARBON ATOMS; B. alkenyl having 2 to 4 carbon atoms; C. alkyl having 2 to 12 carbon atoms substituted by --O--(C n H 2n O) m --R 1 wherein R 1 is alkyl having 1 to 4 carbon atoms or alkenyl having 2 to 4 carbon atoms, n is 2, 3 or 4 and m is 0, 1 or 2; D. alkenyl having 2 to 4 carbon atoms substituted by said --O--(C n H 2n O) m --R 1 or E. cycloalkyl having 5 or 6 carbon atoms or said cycloalkyl substituted by alkoxy having 1 to 4 carbon atoms; process of making said dyestuffs and process of dyeing hydrophobic synthetic materials therewith and resulting dyed materials.
Inventors
- 👤 Ernst Heinrich
- 👤 Horst Kindler
- 👤 Joachim Ribka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:40
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/34; C09B29/36; C09B29/3604; C09B29/3617; C09B29/3621; C09B29/3626; C09B29/363
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
25 words
In the process of dyeing or printing a hydrophobic synthetic material, the improvement wherein the dyestuff is a water-insoluble monoazo dyestuff of the formula ##STR50##
Claim 2
Dependent Claim
25 words
In the process of dyeing or printing a hydrophobic synthetic material, the improvement wherein the dyestuff is a water-insoluble monoazo dyestuff of the formula ##STR50##
Claim 3
Dependent Claim
14 words
A dyed or printed hydrophobic synthetic material produced by the process of claim 1.
Claim 4
Dependent Claim
21 words
The process of claim 1 wherein said hydrophobic synthetic material is a polyolefin, cellulose 21/2 acetate, cellulose triacetate or a polyester.
References Cited (Backward Citations)
US3487066A
Cited
US3869441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-11 | 1980-07-12 | 1981-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-11 | 1984-07-12 | 1985-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-11 | 1988-07-12 | 1989-01-11 | $7700.00 | Window Closed / Lapsed |