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US4055568A Expired / Lapsed US ⏱️ 0.0 years remaining

Dyes of the coumarin series

Assignee: BASF SE
•
Filing: 1976-06-07
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Granted: 1977-10-25
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Expires: 1996-06-07
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Abstract

Abstract Dyes of the formula: ##STR1## in which Z is unsubstituted or substituted alkyl, alkenyl, cycloalkyl, aralkyl, aryl or heteroaryl or a radical of the formula ##STR2## Z 1 , Z 2 , Z 3 and Z 4 are hydrogen or unsubstituted or substituted alkyl, cycloalkyl, aralkyl or aryl; Z 1 and Z 2 or Z 3 and Z 4 may together with the nitrogen form a heterocyclic ring; Z 1 and Z 2 together with the nitrogen may be a saturated unsubstituted or substituted 5-membered or 6-membered ring condensed on in the ortho-position to the nitrogen; B is unsubstituted or substituted alkyl, alkenyl, cycloalkyl, aralkyl, aryl or heteroaryl; and X is imino or oxygen. The dyes give brilliant yellow dyeings having good fastness properties on textile materials, particularly polyester materials, and in plastics.

Inventors

  • 👤 Manfred Patsch
  • 👤 Christos Vamvakaris

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 02:37
CPC Classifications
C; C09; C09B; C09B57/00; C09B57/02; D; D06; D06P; D06P5/00; D06P5/003; D06P5/004; D06P5/006

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 57 words
A compound of the formula ##STR40##wherein: R is phenyl, phenyl substituted by chloro, methyl, methoxy or cyano; C 1 to C 6 alkylmercapto; benzylmercapto; tolylmercapto; chlorobenzylmercapto, hydroxyethylmercapto; β-di-C 1 to C 4 alkylaminoethylmercapto; or γ -di-C 1 to C 4 alkylaminopropylmercapto; R 5 is alkyl of one to four carbon atoms; and X is oxygen or imino.
Claim 2
Dependent Claim 57 words
A compound of the formula ##STR40##wherein: R is phenyl, phenyl substituted by chloro, methyl, methoxy or cyano; C 1 to C 6 alkylmercapto; benzylmercapto; tolylmercapto; chlorobenzylmercapto, hydroxyethylmercapto; β-di-C 1 to C 4 alkylaminoethylmercapto; or γ -di-C 1 to C 4 alkylaminopropylmercapto; R 5 is alkyl of one to four carbon atoms; and X is oxygen or imino.
Claim 3
Dependent Claim 23 words
A compound of the formula claimed in claim 1 wherein: R is phenyl or methylmercapto; R 5 is ethyl; and X is oxygen.

References Cited (Backward Citations)

US3539583A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-10-24 1981-04-25 1981-10-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-10-24 1985-04-25 1985-10-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-10-24 1989-04-25 1989-10-25 $7700.00 Window Closed / Lapsed

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