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US3960831A Expired / Lapsed US ⏱️ 0.0 years remaining

Disazo dyestuffs containing amino azo benzene sulfonic acid and phenolic or naphtholic couplers

Assignee: Bayer AG
•
Filing: 1970-05-01
•
Granted: 1976-06-01
•
Expires: 1990-05-01
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Abstract

Abstract Disazo dyestuffs which in the form of the free acid correspond to the formula ##SPC1## pivotal Wherein Q represents a hydroxyl group, an alkoxy group or an acylamino group, A is a radical of the benzene or naphthalene series which is optionally further substituted, R represents hydrogen or an alkyl radical, X denotes --O-- or --NH-- and the benzene nucleus K can further be substituted by non-ionic radicals and the benzene nucleus M can further be substituted by halogen, alkyl or alkoxy groups. The new dyestuffs are particularly suitable for dyeing and printing natural and synthetic fiber materials containing amide groups. The resulting dyeings are distinguished by good wet fastness properties and good light fastness properties.

Inventors

  • 👤 Lucien Charles Hippolyte Juy
  • 👤 Fritz Suckfull

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 18:50
CPC Classifications
C; C09; C09B; C09B31/00; C09B31/02; C09B31/025; C09B35/00; C09B35/02; C09B35/039; C09B35/04; C09B43/00; C09B43/11; C09B43/28

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 121 words
Disazo dyestuff which in the form of the free acid corresponds to the formula ##SPC41## where Q is OH, alkoxy with 1-7 carbon atoms, hydroxy alkoxy with 1-7 carbon atoms, or benzyloxy; R is H; where A is phenylene; X is --O-- or --NH--; and wherein M is unsubstituted or substituted by a member of the group Cl, alkyl with 1-7 carbon atoms, benzyl, chlorobenzyl, alkoxy with 1-7 carbon atoms, hydroxy alkoxy with 1-7 carbon atoms or benzyloxy; and wherein A and K independently are unsubstituted or substituted by a member of the group F, Cl, Br, NO 2 , OH, cyclohexyl, alkyl with 1-7 carbon atoms, alkoxy with 1-4 carbon atoms, alkoxy carbonyl with 1-5 carbon atoms, phenyl, or chlorophenyl.
Claim 2
Dependent Claim 121 words
Disazo dyestuff which in the form of the free acid corresponds to the formula ##SPC41## where Q is OH, alkoxy with 1-7 carbon atoms, hydroxy alkoxy with 1-7 carbon atoms, or benzyloxy; R is H; where A is phenylene; X is --O-- or --NH--; and wherein M is unsubstituted or substituted by a member of the group Cl, alkyl with 1-7 carbon atoms, benzyl, chlorobenzyl, alkoxy with 1-7 carbon atoms, hydroxy alkoxy with 1-7 carbon atoms or benzyloxy; and wherein A and K independently are unsubstituted or substituted by a member of the group F, Cl, Br, NO 2 , OH, cyclohexyl, alkyl with 1-7 carbon atoms, alkoxy with 1-4 carbon atoms, alkoxy carbonyl with 1-5 carbon atoms, phenyl, or chlorophenyl.

References Cited (Backward Citations)

US2708668A Cited
US1327688A Cited
US1815827A Cited
US1979534A Cited
US2152408A Cited
US2192153A Cited
US2729630A Cited
US3109841A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-06-01 1979-12-01 1980-06-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-06-01 1983-12-01 1984-06-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-06-01 1987-12-01 1988-06-01 $7700.00 Window Closed / Lapsed

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