US4443536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nondiffusible photographic couplers and photographic elements and processes employing same
Assignee: Eastman Kodak Co
•
Filing: 1982-04-08
•
Granted: 1984-04-17
•
Expires: 2002-04-08
Abstract
Abstract Photographic couplers comprising a coupler moiety and a ballast moiety have advantageous properties when the ballast moiety is terminated with a hydroxyphenylsulfonyl or hydroxyphenylsulfinyl group. The couplers are useful in photographic emulsions and element.
Inventors
- 👤 Gregory J. Lestina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:31
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/3212
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
36 words
A photographic element comprising a support, a photographic silver halide emulsion and a photographic coupler comprising a coupler moiety and a ballast moiety, the ballast moiety being terminated with a hydroxyphenylsulfonyl group or a hydroxyphenylsulfinyl group.
Claim 2
Dependent Claim
36 words
A photographic element comprising a support, a photographic silver halide emulsion and a photographic coupler comprising a coupler moiety and a ballast moiety, the ballast moiety being terminated with a hydroxyphenylsulfonyl group or a hydroxyphenylsulfinyl group.
Claim 3
Dependent Claim
39 words
An element of claim 1 wherein the coupler has the structural formula: ##STR81## where: COUP represents a coupler moiety; p is 1 or 2; q is 1 to 3; and L is direct linkage or a bivalent linking group.
Claim 4
Dependent Claim
120 words
A photographic element comprising a support, a photographic silver halide emulsion and a photographic coupler wherein the coupler has the structural formula: ##STR82## where: COUP represents a coupler moiety; l, m and n are each individually 0 or 1; L 1 represents a bivalent group selected from ##STR83## L 2 represents a bivalent group selected from ##STR84## L 3 represents a bivalent group selected from ##STR85## R 1 and R 3 are each individually hydrogen, alkyl of 1 to 10 carbon atoms or aryl of 6 to 20 carbon atoms; R 2 is hydrogen or one or more halogen, alkyl or alkoxy substituents; X is --O-- or --S--; ##STR86## r is 0 or 1; and s is 0 to 10.
Claim 5
Dependent Claim
120 words
A photographic element comprising a support, a photographic silver halide emulsion and a photographic coupler wherein the coupler has the structural formula: ##STR82## where: COUP represents a coupler moiety; l, m and n are each individually 0 or 1; L 1 represents a bivalent group selected from ##STR83## L 2 represents a bivalent group selected from ##STR84## L 3 represents a bivalent group selected from ##STR85## R 1 and R 3 are each individually hydrogen, alkyl of 1 to 10 carbon atoms or aryl of 6 to 20 carbon atoms; R 2 is hydrogen or one or more halogen, alkyl or alkoxy substituents; X is --O-- or --S--; ##STR86## r is 0 or 1; and s is 0 to 10.
Claim 6
Dependent Claim
82 words
An element of claim 3 wherein the coupler has the structural formula: ##STR87## where: COUP represents a coupler moiety L 4 represents a bivalent group selected from ##STR88## where: R 1 and R 3 are each individually hydrogen, alkyl of 1 to 20 carbon atoms or aryl of 6 to 20 carbon atoms; R 2 is hydrogen or one or more halogen, alkyl or alkoxy substituents, X is --O-- or --S--; r is 0 or 1; and s is 0 to 10.
Claim 7
Dependent Claim
15 words
An element of claim 4 wherein the hydroxy group is para to the sulfonyl group.
Claim 8
Dependent Claim
26 words
An element of one of claims 2, 3, 4 or 5 wherein the coupler is a yellow dye-forming coupler and COUP is an acylacetanilide coupler moiety.
Claim 9
Dependent Claim
28 words
An element of one of claims 2, 3, 4 or 5 wherein the coupler is a cyan dye-forming coupler and COUP is a phenol or naphthol coupler moiety.
Claim 10
Dependent Claim
30 words
An element of one of claims 2, 3, 4 or 5 wherein the coupler is a magenta dye-forming coupler and COUP is a pyrazolone, pyrazolotriazole, pyrazolobenzimidazole or indazolone coupler moiety.
Claim 11
Dependent Claim
27 words
An element of one of claims 2, 3, 4 or 5 wherein the coupler is a non-dye-forming coupler and COUP is an α- or γ-substituted ketone moiety.
Claim 12
Dependent Claim
12 words
An element of claim 3 wherein the coupler has the structure: ##STR89##
Claim 13
Dependent Claim
12 words
An element of claim 3 wherein the coupler has the structure: ##STR90##
Claim 14
Dependent Claim
14 words
An element of claim 3 wherein the coupler has one of the structures: ##STR91##
Claim 15
Dependent Claim
82 words
An element of claim 3 wherein the coupler has the structural formula: ##STR92## where: COUP represents a coupler moiety L 4 represents a bivalent group selected from ##STR93## where: R 1 and R 3 are each individually hydrogen, alkyl of 1 to 20 carbon atoms or aryl of 6 to 20 carbon atoms; R 2 is hydrogen or one or more halogen, alkyl or alkoxy substituents, X is --O-- or --S--; r is 0 or 1; and s is 0 to 10.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-17 | 1987-10-17 | 1988-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-17 | 1991-10-17 | 1992-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-17 | 1995-10-17 | 1996-04-17 | $7700.00 | Window Closed / Lapsed |