US4386216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magenta dye developers
Assignee: Polaroid Corp
•
Filing: 1980-04-24
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Granted: 1983-05-31
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Expires: 2000-04-24
Abstract
Abstract Diffusion transfer color processes and products are disclosed employing image-dye providing materials providing magenta image dyes having the chromophoric system represented by the formula ##STR1## wherein each R is the same or different and is an alkyl group, and each X is the same or different and is hydrogen or an alkyl group (including substituted alkyl). The dye image-providing material includes a diffusion control moiety, such as a hydroquinonyl group, and may be diffusible or nondiffusible as a function of the diffusion control moiety.
Inventors
- 👤 Louis Locatell, Jr.
- 👤 Howard G. Rogers
- 👤 Ruth C. Bilofsky
- 👤 Ronald F. Cieciuch
- 👤 Charles M. Zepp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:28
CPC Classifications
C; C09; C09B; C09B11/00; C09B11/04; C09B11/10; C09B11/24; G; G03; G03C; G03C8/00; G03C8/02; G03C8/08; G03C8/10; G03C8/12; G03C8/14; G03C8/16; G03C8/18
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
153 words
A compound of the formula ##STR40## wherein each R is the same or different and is an alkyl group, each Y is a diffusion control substituent --A--D wherein D is a diffusion control moiety and A is selected from the group consisting of a covalent bond, alkylene, --SO 2 --NH-alkylene, --SO 2 --, --S-alkylene, --S--, --O--, ##STR41## and --SO 2 NH--; each X' is the same or different and is hydrogen, alkyl or --(CH 2 --X 2 --D) n wherein X 2 is alkylene, and n is 0 or 1, provided that at least one n is 1, said diffusion control moiety D being selected from the group consisting of a hydroquinonyl silver halide developing moiety, a color coupling phenol or naphthol moiety having an available coupling position para to the hydroxyl group, a sulfonamido phenol group which will cleave or ring close following oxidation, and a thiazolidine group capable of silver-catalyzed cleavage.
Claim 2
Dependent Claim
153 words
A compound of the formula ##STR40## wherein each R is the same or different and is an alkyl group, each Y is a diffusion control substituent --A--D wherein D is a diffusion control moiety and A is selected from the group consisting of a covalent bond, alkylene, --SO 2 --NH-alkylene, --SO 2 --, --S-alkylene, --S--, --O--, ##STR41## and --SO 2 NH--; each X' is the same or different and is hydrogen, alkyl or --(CH 2 --X 2 --D) n wherein X 2 is alkylene, and n is 0 or 1, provided that at least one n is 1, said diffusion control moiety D being selected from the group consisting of a hydroquinonyl silver halide developing moiety, a color coupling phenol or naphthol moiety having an available coupling position para to the hydroxyl group, a sulfonamido phenol group which will cleave or ring close following oxidation, and a thiazolidine group capable of silver-catalyzed cleavage.
Claim 3
Dependent Claim
12 words
A compound as defined in claim 1 wherein X' is not hydrogen.
Claim 4
Dependent Claim
14 words
A compound as defined in claim 1 wherein each D is a hydroquinoyl group.
Claim 5
Dependent Claim
31 words
A compound as defined in claim 1 wherein said diffusion control moiety D is a color coupling phenol or naphthol moiety having an available coupling position para to the hydroxyl group.
Claim 6
Dependent Claim
26 words
A compound as defined in claim 1 wherein said diffusion control moiety D is a sulfonamido phenol group which will cleave or ring close following oxidation.
Claim 7
Dependent Claim
20 words
A compound as defined in claim 1 wherein said diffusion control group is a thiazolidine group capable of silver-catalyzed cleavage.
Claim 8
Dependent Claim
11 words
A compound as defined in claim 1 wherein A is alkylene.
Claim 9
Dependent Claim
13 words
A compound as defined in claim 1 wherein A is a covalent bond.
Claim 10
Dependent Claim
6 words
A compound having the formula: ##STR42##
Claim 11
Dependent Claim
6 words
A compound having the formula: ##STR42##
Claim 12
Dependent Claim
6 words
A compound having the formula: ##STR43##
Claim 13
Dependent Claim
6 words
A compound having the formula: ##STR43##
Claim 14
Dependent Claim
6 words
A compound having the formula: ##STR44##
Claim 15
Dependent Claim
6 words
A compound having the formula: ##STR44##
Claim 16
Dependent Claim
6 words
A compound having the formula: ##STR45##
Claim 17
Dependent Claim
6 words
A compound having the formula: ##STR45##
Claim 18
Dependent Claim
6 words
A compound having the formula: ##STR46##
Claim 19
Dependent Claim
6 words
A compound having the formula: ##STR46##
Claim 20
Dependent Claim
6 words
A compound having the formula: ##STR47##
Claim 21
Dependent Claim
6 words
A compound having the formula: ##STR47##
Claim 22
Dependent Claim
6 words
A compound having the formula: ##STR48##
Claim 23
Dependent Claim
6 words
A compound having the formula: ##STR48##
References Cited (Backward Citations)
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Cited
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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) | 1986-05-30 | 1986-11-29 | 1987-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-30 | 1990-11-29 | 1991-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-30 | 1994-11-29 | 1995-05-31 | $7700.00 | Window Closed / Lapsed |