US3718641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reactive arylazo-pyrazolone dyestuffs
Assignee: Cassella Farbwerke Mainkur AG
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Filing: 1970-05-04
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Granted: 1973-02-27
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Expires: 1990-05-04
Abstract
Abstract Dyestuff of the formula WHEREIN D is the residue of a diazo component; A, B and Z are substituent moieties; m and n are integers and R is a hydrocarbon bridging member as well as the copper, cobalt and chromium metal complexes thereof, which are useful for dyeing wool, polyamide, silk or cellulose fibers in good dye yields having highly brilliant greenish to reddish yellow shados possessing good fastness properties.
Inventors
- 👤 E Schmidt
- 👤 R Muller
- 👤 H Bender
- 👤 Brachel H Von
- 👤 R Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:02
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/44; C09B62/503; C09B62/507; C09B62/51
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
27 words
The dyestuff of claim 1 wherein n and m are each 1, A is a 2-position substituent, B is a 3-position substituent and is a 5-position substituent.
Claim 2
Dependent Claim
18 words
The dyestuff of claim 1 wherein said D is substituted with -COOH, -SO3H or both of these moieties.
Claim 3
Dependent Claim
34 words
The dyestuff of claim 1 wherein D is 2,5-disulfophenyl, n is 1 and A is 2-methyl, m is zero, the acylamino group is a 5-position substituent, R is endomethylenecyclohexylene and Z is Beta -chloroethyl.
Claim 4
Dependent Claim
36 words
The dyestuff of claim 1 wherein D is o-sulfo-phenyl, n and m are each 1, A is 2-methyl, B is 3-sulfo, the acylamino group is a 5-position substituent, R is cyclohexylene and Z is Beta -chloroethyl.
Claim 5
Dependent Claim
36 words
The dyestuff of claim 1 wherein D is 3-sulfo-6-hydroxyphenyl, n and m are each 1, A is 2-ethyl, B is 5-sulfo, the acylamino group is a 3-position substituent, R is phenylene and Z is Beta -chloroethyl.
Claim 6
Dependent Claim
36 words
The dyestuff of claim 1 wherein D is 2-sulfonaphthyl, n and m are each 1, A is 2-methoxy, B is 3-sulfo, the acylamino group is a 5-position substituent, R is propylene and Z is Beta -chloroethyl.
References Cited (Backward Citations)
US3435023A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |