US4138263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic silver halide material with 2-equivalent, N-heterocyclic yellow couplers
Assignee: Agfa Gevaert AG
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Filing: 1975-08-13
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Granted: 1979-02-06
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Expires: 1995-08-13
Abstract
Abstract 2-Equivalent yellow couplers for the production of yellow dye images in color photographic silver halide materials have as splittable group a nitrogen-containing 6-membered heteroaromatic ring which is linked by the said nitrogen atom to the coupling position of the coupler molecule, contains a carbonyl group adjacent said nitrogen, and also contains one or two additional nitrogens as well as a fused-on aromatic carbocyclic ring. When the heteroaromatic ring contains two additional nitrogens, all three nitrogens are vicinal; when it contains only one additional nitrogen, the splittable group is a 1,3-quinazolinone-4 having at least one carboxy, with lower aliphatic alcohols esterified carboxy, nitro, methyl or chloro substituent.
Inventors
- 👤 Immo Boie
- 👤 Gunter Renner
- 👤 Friedrich-Wilhelm Kunitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:07
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/02; C07D215/16; C07D215/20; C07D215/22; C07D237/00; C07D237/02; C07D237/06; C07D237/10; C07D237/14; C07D237/16; C07D237/26; C07D237/30; C07D237/32; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/32; C07D239/34; C07D239/36; C07D239/46; C07D239/52; C07D239/54; C07D239/70; C07D239/72; C07D239/86; C07D239/88; C07D239/90; C07D239/95; C07D239/96; C07D241/00; C07D241/02; C07D241/10; C07D241/14; C07D241/20; C07D241/36; C07D241/38; C07D241/40; C07D241/44; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/30; C07D253/00; C07D253/08; G; G03; G03C; G03C7/00; G03C7/30; G03C7/305; G03C7/30511; G03C7/30517; G03C7/30535
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
79 words
In a light-sensitive material having a silver halide emulsion layer in effective contact with a 2-equivalent yellow coupler carrying a nitrogen-containing 6-membered heterocycle connected by said nitrogen atom to the coupling position of an open-chain ketomethylene yellow coupler and having a carbonyl carbon adjacent said nitrogen, which heterocycle splits off during coupling, the improvement according to which said heterocycle is ##STR87## in which Ar is a carbocyclic aromatic ring fused to the two carbons to which it is connected.
Claim 2
Dependent Claim
79 words
In a light-sensitive material having a silver halide emulsion layer in effective contact with a 2-equivalent yellow coupler carrying a nitrogen-containing 6-membered heterocycle connected by said nitrogen atom to the coupling position of an open-chain ketomethylene yellow coupler and having a carbonyl carbon adjacent said nitrogen, which heterocycle splits off during coupling, the improvement according to which said heterocycle is ##STR87## in which Ar is a carbocyclic aromatic ring fused to the two carbons to which it is connected.
Claim 3
Dependent Claim
31 words
The combination of claim 1 in which the aromatic ring is selected from the class consisting of an unsubstituted ring and a ring that is substituted with methyl or nitro groups.
Claim 4
Dependent Claim
14 words
The combination of claim 2 in which the coupler is a pivaloyl acetanilide coupler.
Claim 5
Dependent Claim
14 words
The combination of claim 2 in which the coupler is a benzoyl acetanilide coupler.
Claim 6
Dependent Claim
51 words
In a light-sensitive silver halide emulsion containing a 2-equivalent yellow coupler, the improvement according to which the coupler is a diffusion-fast pivaloylacetanilide coupler substituted in its coupling position by the group ##STR88## in which Ar is an unsubstituted carbocyclic aromatic ring fused to the two carbons to which it is connected.
Claim 7
Dependent Claim
51 words
In a light-sensitive silver halide emulsion containing a 2-equivalent yellow coupler, the improvement according to which the coupler is a diffusion-fast pivaloylacetanilide coupler substituted in its coupling position by the group ##STR88## in which Ar is an unsubstituted carbocyclic aromatic ring fused to the two carbons to which it is connected.
Claim 8
Dependent Claim
52 words
In a photographic material comprising a light sensitive silver halide emulsion layer and a yellow color coupler in reactive association with the said silver halide emulsion layer, wherein the improvement comprises said coupler being an open-chain ketomethylene yellow coupler having attached to its methylene coupling position a 1, 2, 3-benzotriazine-4-(3H)-one heterocyclic nucleus.
Claim 9
Dependent Claim
52 words
In a photographic material comprising a light sensitive silver halide emulsion layer and a yellow color coupler in reactive association with the said silver halide emulsion layer, wherein the improvement comprises said coupler being an open-chain ketomethylene yellow coupler having attached to its methylene coupling position a 1, 2, 3-benzotriazine-4-(3H)-one heterocyclic nucleus.
Claim 10
Dependent Claim
102 words
In a light-sensitive material having a silver halide emulsion layer in effective contact with a 2-equivalent yellow coupler carrying a photographically relatively inert nitrogen-containing 6-membered heterocycle connected by said nitrogen atom to the coupling position of an open-chain ketomethylene yellow coupler and having a carbonyl carbon adjacent said nitrogen, which heterocycle splits off during coupling, the improvement according to which said heterocycle is a 1,3-quinazolinone-4 in which said nitrogen is the nitrogen in the 3-position, and in at least one of the 2,5,6,7 and 8 positions there is a carboxy, alkoxycarbonyl having up to 5 carbon atoms, nitro, methyl or chloro substituent.
Claim 11
Dependent Claim
102 words
In a light-sensitive material having a silver halide emulsion layer in effective contact with a 2-equivalent yellow coupler carrying a photographically relatively inert nitrogen-containing 6-membered heterocycle connected by said nitrogen atom to the coupling position of an open-chain ketomethylene yellow coupler and having a carbonyl carbon adjacent said nitrogen, which heterocycle splits off during coupling, the improvement according to which said heterocycle is a 1,3-quinazolinone-4 in which said nitrogen is the nitrogen in the 3-position, and in at least one of the 2,5,6,7 and 8 positions there is a carboxy, alkoxycarbonyl having up to 5 carbon atoms, nitro, methyl or chloro substituent.
Claim 12
Dependent Claim
14 words
The combination of claim 7 in which the coupler is a pivaloyl acetanilide coupler.
Claim 13
Dependent Claim
14 words
The combination of claim 7 in which the coupler is a benzoyl acetanilide coupler.
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) | 1982-02-05 | 1982-08-07 | 1983-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-05 | 1986-08-07 | 1987-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-05 | 1990-08-07 | 1991-02-06 | $7700.00 | Window Closed / Lapsed |