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US4009162A Expired / Lapsed US ⏱️ 0.0 years remaining

Basic oxazine dyestuffs

Assignee: Hoechst AG
•
Filing: 1975-03-19
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Granted: 1977-02-22
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Expires: 1995-03-19
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Abstract

Abstract New valuable basic oxazine dyestuffs of the formula ##STR1## in which R is hydrogen or lower alkyl, R 1 is hydrogen or lower alkyl substituted by halogen, lower alkoxy, cyano or hydroxy, R 2 and R 3 each is hydrogen or lower alkyl or lower alkyl substituted by halogen, lower alkoxy, cyano or hydroxy, or R 1 and R 2 form together with the nitrogen atom the pyrrolidino, piperazino, piperidino or morpholino ring, and the phenyl nucleus a is substituted by lower alkyl, lower alkoxy, acetyl, cyano, halogen, phenoxy or trifluoromethyl, and X.sup.( - ) is an anion has been found which are well suitable for the dyeing or printing of tanned cellulose fibers, silk, leather, or acetate rayon, synthetic polyamide fibers or acid-modified polyester and polyamide fibers and fibers containing polyacrylonitrile or polyvinylidene cyanide. The dyeings and prints obtained are bright and color-intensive and have good fastnesses to light and to wet processing.

Inventors

  • 👤 Eberhard Mundlos
  • 👤 Reinhard Mohr
  • 👤 Luis Herz

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 05:49
CPC Classifications
C; C09; C09B; C09B19/00

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 98 words
A basic oxazine dyestuff of the formula I ##STR26## in which R is hydrogen or lower alkyl, R 1 is hydrogen or lower alkyl substituted by halogen, lower alkoxy, cyano or hydroxy, R 2 and R 3 each is hydrogen or lower alkyl or lower alkyl substituted by halogen, lower alkoxy, cyano or hydroxy, or R 1 and R 2 form together with the nitrogen atom the pyrrolidino, piperazino, piperidino or morpholino ring, and the phenyl nucleus a is substituted by lower alkyl, lower alkoxy, acetyl, cyano, halogen, phenoxy or trifluoromethyl, and X.sup.( - ) is an anion.
Claim 2
Dependent Claim 98 words
A basic oxazine dyestuff of the formula I ##STR26## in which R is hydrogen or lower alkyl, R 1 is hydrogen or lower alkyl substituted by halogen, lower alkoxy, cyano or hydroxy, R 2 and R 3 each is hydrogen or lower alkyl or lower alkyl substituted by halogen, lower alkoxy, cyano or hydroxy, or R 1 and R 2 form together with the nitrogen atom the pyrrolidino, piperazino, piperidino or morpholino ring, and the phenyl nucleus a is substituted by lower alkyl, lower alkoxy, acetyl, cyano, halogen, phenoxy or trifluoromethyl, and X.sup.( - ) is an anion.

References Cited (Backward Citations)

US2376283A Cited
US3629248A Cited
US3681347A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-02-22 1980-08-23 1981-02-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-02-22 1984-08-23 1985-02-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-02-22 1988-08-23 1989-02-22 $7700.00 Window Closed / Lapsed

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