Patent US4256882A successfully refreshed from Google Patents.
US4256882A
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Reactive dyestuffs
Assignee: Bayer AG
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Filing: 1976-08-03
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Granted: 1981-03-17
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Expires: 1996-08-03
Abstract
Abstract Reactive dyestuffs which in form of the free acid correspond to the following formula ##STR1## wherein R 1 , R 2 , W 1 , Y, Z, Q, as well as A, B and C have the meaning given in claim 1, and their use for the dyeing and printing of fibre material made of polyamide, for example natural and, in particular, synthetic polyamides, and natural and regenerated cellulose in red and bluish-tinged red fluorescent color.
Inventors
- 👤 Adolf Friedrich
- 👤 Horst Harnisch
- 👤 Roderich Raue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:44
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/002; C09B62/0025
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
129 words
Reactive dyestuff of the formula ##STR18## or the alkali or ammonium salt thereof, wherein R 1 is ##STR19## R 2 is CH 2 --NH--CO--Q--N--Z; hydrogen; C 1 -C 4 -alkyl; chloro-C 1 -C 4 -alkyl; bromo-C 1 -C 4 -alkyl; cyano-C 1 -C 4 -alkyl; C 1 -C 4 -alkoxy-C 1 -C 4 -alkyl; cyclohexyl; cyclopentyl; phenyl-C 1 -C 2 -alkyl; phenyl-C 1 -C 2 -alkyl substituted with methyl, ethyl, methoxy, ethoxy, chloro, or bromo; phenyl; or phenyl substituted with methyl, methoxy, chloro, or bromo; W 1 and W 2 are C 2 -C 4 -alkylene; Y is hydrogen, methyl, or ethyl; Z is a fibre reactive radical reactable with polyamides and cellulose and free from groups conferring solubility in water; and Q is C 1 -C 3 -alkylene.
Claim 2
Dependent Claim
129 words
Reactive dyestuff of the formula ##STR18## or the alkali or ammonium salt thereof, wherein R 1 is ##STR19## R 2 is CH 2 --NH--CO--Q--N--Z; hydrogen; C 1 -C 4 -alkyl; chloro-C 1 -C 4 -alkyl; bromo-C 1 -C 4 -alkyl; cyano-C 1 -C 4 -alkyl; C 1 -C 4 -alkoxy-C 1 -C 4 -alkyl; cyclohexyl; cyclopentyl; phenyl-C 1 -C 2 -alkyl; phenyl-C 1 -C 2 -alkyl substituted with methyl, ethyl, methoxy, ethoxy, chloro, or bromo; phenyl; or phenyl substituted with methyl, methoxy, chloro, or bromo; W 1 and W 2 are C 2 -C 4 -alkylene; Y is hydrogen, methyl, or ethyl; Z is a fibre reactive radical reactable with polyamides and cellulose and free from groups conferring solubility in water; and Q is C 1 -C 3 -alkylene.
Claim 3
Dependent Claim
47 words
Reactive dyestuff of claim 1 which corresponds to the following formula or its alkali or ammonium salt: ##STR20## wherein R 3 is ##STR21## R 4 is ##STR22## hydrogen, methyl, ethyl, or butyl; Y 1 is hydrogen, methyl, or ethyl, and Z 1 is 2,4-difluoro-5-chloropyrimidinyl, 2,3-dichloroquinoxaline-6-carbonyl, or 2,4-dichlorotriazinyl.
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) | 1984-03-16 | 1984-09-15 | 1985-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-16 | 1988-09-15 | 1989-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-16 | 1992-09-15 | 1993-03-17 | $7700.00 | Window Closed / Lapsed |