Patent US4051119A successfully refreshed from Google Patents.
US4051119A
Expired / Lapsed
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Azomethine dyes derived from an o-hydroxy aromatic aldehyde and a 2-aminopyridine
Assignee: American Color and Chemical LLC
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Filing: 1975-09-02
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Granted: 1977-09-27
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Expires: 1995-09-02
Abstract
Abstract Azomethine dyes of the formula ##STR1## in which A is phenyl, naphthyl, phenyl substituted by up to 3 substituents or naphthyl substituted by up to 2 substituents; B is salicylaldehyde, o-hydroxy-naphthaldehyde or salicylaldehyde or o-hydroxy-naphthaldehyde substituted by up to 2 substituents and C is 2-aminopyridyl or 2-aminopyridyl substituted by up to 2 substituents. The dyes produce dyeings on metal-modified polypropylene of excellent fastness properties.
Inventors
- 👤 Raouf Botros
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:25
CPC Classifications
C; C09; C09B; C09B55/00; C09B55/002; C09B29/00; C09B29/10; C09B29/12; C09B56/00; C09B56/02; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/928; Y10S8/929
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
168 words
An azomethine dye of the formula: ##STR35## wherein: A is phenyl, naphthyl, phenyl substituted by up to 3 substituents or naphthyl substituted by up to 2 substituents, said substituents being independently selected from lower alkyl of 1-4 carbons; lower alkoxyl of 1-4 carbons; nitro; cyano; fluorine; chlorine; bromine; trifluoromethyl; hydroxyl; RCOO--, where R is alkyl of 1-4 carbons; carboxyl; ROOC--, where R is alkyl of 1-4 carbons; RCO--, where R is alkyl of 1-4 carbons; benzoyl; RCONH--, where R is alkyl of 1-4 carbons; ArCONH--, where Ar is phenyl; or carbamyl, the nitrogen of which is unsubstituted or singly or doubly substituted by alkyl of 1-4 carbons; B is salicylaldehyde, o-hydroxy-naphthaldehyde, or salicylaldehyde or o-hydroxy-naphthaldehyde substituted by up to 2 substituents independently selected from lower alkyl of 1-4 carbons; lower alkoxyl of 1-4 carbons; cyano; fluorine; chlorine or bromine; and C is 2-aminopyridyl or 2-aminopyridyl substituted by up to 2 substituents independently selected from lower alkyl of 1-4 carbons; lower alkoxyl of 1-4 carbons; nitro; chlorine or bromine.
Claim 2
Dependent Claim
168 words
An azomethine dye of the formula: ##STR35## wherein: A is phenyl, naphthyl, phenyl substituted by up to 3 substituents or naphthyl substituted by up to 2 substituents, said substituents being independently selected from lower alkyl of 1-4 carbons; lower alkoxyl of 1-4 carbons; nitro; cyano; fluorine; chlorine; bromine; trifluoromethyl; hydroxyl; RCOO--, where R is alkyl of 1-4 carbons; carboxyl; ROOC--, where R is alkyl of 1-4 carbons; RCO--, where R is alkyl of 1-4 carbons; benzoyl; RCONH--, where R is alkyl of 1-4 carbons; ArCONH--, where Ar is phenyl; or carbamyl, the nitrogen of which is unsubstituted or singly or doubly substituted by alkyl of 1-4 carbons; B is salicylaldehyde, o-hydroxy-naphthaldehyde, or salicylaldehyde or o-hydroxy-naphthaldehyde substituted by up to 2 substituents independently selected from lower alkyl of 1-4 carbons; lower alkoxyl of 1-4 carbons; cyano; fluorine; chlorine or bromine; and C is 2-aminopyridyl or 2-aminopyridyl substituted by up to 2 substituents independently selected from lower alkyl of 1-4 carbons; lower alkoxyl of 1-4 carbons; nitro; chlorine or bromine.
Claim 3
Dependent Claim
18 words
The azomethine dye of claim 1 wherein A is phenyl or phenyl substituted by up to 3 substituents.
Claim 4
Dependent Claim
10 words
The azomethine dye of claim 1 wherein A is ##STR36##
Claim 5
Dependent Claim
10 words
The azomethine dye of claim 1 wherein A is ##STR37##
Claim 6
Dependent Claim
10 words
The azomethine dye of claim 1 wherein A is ##STR38##
Claim 7
Dependent Claim
94 words
An azomethine dye of the formula: ##STR39## wherein: A is phenyl or phenyl substituted by up to 3 substituents independently selected from lower alkyl of 1-4 carbons; lower alkoxyl of 1-4 carbons; trifluoromethyl; fluorine; bromine or chlorine; B is salicylaldehyde or salicylaldehyde substituted by up to 2 substituents independently selected from lower alkyl of 1-4 carbons; lower alkoxyl of 1-4 carbons; fluorine; chlorine or bromine; and C is 2-aminopyridyl or 2-aminopyridyl substituted by up to 2 substituents independently selected from lower alkyl of 1-4 carbons; lower alkoxyl of 1-4 carbons; fluorine; chlorine or bromine.
Claim 8
Dependent Claim
94 words
An azomethine dye of the formula: ##STR39## wherein: A is phenyl or phenyl substituted by up to 3 substituents independently selected from lower alkyl of 1-4 carbons; lower alkoxyl of 1-4 carbons; trifluoromethyl; fluorine; bromine or chlorine; B is salicylaldehyde or salicylaldehyde substituted by up to 2 substituents independently selected from lower alkyl of 1-4 carbons; lower alkoxyl of 1-4 carbons; fluorine; chlorine or bromine; and C is 2-aminopyridyl or 2-aminopyridyl substituted by up to 2 substituents independently selected from lower alkyl of 1-4 carbons; lower alkoxyl of 1-4 carbons; fluorine; chlorine or bromine.
Claim 9
Dependent Claim
7 words
An azomethine dye of the formula: ##STR40##
Claim 10
Dependent Claim
7 words
An azomethine dye of the formula: ##STR40##
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) | 1980-09-26 | 1981-03-28 | 1981-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-26 | 1985-03-28 | 1985-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-26 | 1989-03-28 | 1989-09-27 | $7700.00 | Window Closed / Lapsed |