US3725398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing 9-aryloxycarbocyanine compounds
Assignee: Eastman Kodak Co
•
Filing: 1971-04-21
•
Granted: 1973-04-03
•
Expires: 1991-04-21
Abstract
Abstract Process for preparing 9-aryloxycarbocyanine dye compounds which comprises reacting a 9-alkylthiocarbocyanine dye compound in the presence of a basic medium with a phenol. The 9aryloxycarbocyanine dye compounds obtained are useful for the spectral sensitization of silver halide photographic emulsions.
Inventors
- 👤 F Webster
- 👤 R Taber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:05
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/0008; C09B23/0025; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12; G03C1/14; G03C1/18; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/127
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
26 words
A process in accordance with claim 1 wherein the molar proportion of the phenol is about 20 to about 75 times that of the 9-alkylthiocarbocyanine compound.
Claim 2
Dependent Claim
25 words
A process in accordance with claim 1 wherein the molar proportion of the phenol is about 30 to 55 times that of the 9-alkylthiocarbocyanine compound.
Claim 3
Dependent Claim
21 words
A process in accordance with claim 1 wherein the reaction is carried out at the reflux temperature of the reaction mixture.
Claim 4
Dependent Claim
21 words
A process in accordance with claim 2 wherein the reaction is carried out at the reflux temperature of the reaction mixture.
Claim 5
Dependent Claim
21 words
A process in accordance with claim 3 wherein the reaction is carried out at the reflux temperature of the reaction mixture.
Claim 6
Dependent Claim
55 words
A process in accordance with claim 1 wherein the reaction is carried out in a heat conductive reaction vessel in which at least a portion of the reaction vessel which is in contact with the reaction mixture is heated until the external surface temperature thereof is in the range of about 235*C. to about 245*C.
Claim 7
Dependent Claim
55 words
A process in accordance with claim 2 wherein the reaction is carried out in a heat conductive reaction vessel in which at least a portion of the reaction vessel which is in contact with the reaction mixture is heated until the external surface temperature thereof is in the range of about 235*C. to about 245*C.
Claim 8
Dependent Claim
55 words
A process in accordance with claim 3 wherein the reaction is carried out in a heat conductive reaction vessel in which at least a portion of the reaction vessel which is in contact with the reaction mixture is heated until the external surface temperature thereof is in the range of about 235*C. to about 245*C.
Claim 9
Dependent Claim
34 words
A process in accordance with claim 1 for preparing 3,3''-diethyl-9-phenoxythiacarbocyanine iodide which comprises reacting 3,3''-diethyl-9-ethylthiothiacarbocyanine iodide with a molar excess of phenol in the presence of a basic condensing agent at an elevated temperature.
Claim 10
Dependent Claim
25 words
A process in accordance with claim 10 wherein the molar proportion of phenol is about 20 to about 75 times that of the 9-ethylthiothiacarbocyanine compound.
Claim 11
Dependent Claim
25 words
A process in accordance with claim 10 wherein the molar proportion of phenol is about 30 to about 55 times that of the 9-ethylthiothiacarbocyanine compound.
Claim 12
Dependent Claim
33 words
A process in accordance with claim 1 for preparing 3,3''-diethyl-9-phenoxy-4,5;4'',5''-dibenzothiacarbocyanine ethylsulfate which comprises reacting 3,3''-diethyl-9-ethylthio-4,5;4'',5''-dibenzothiacarbocyanine Ethylsulfate with a molar excess of phenol in the presence of base condensing agent at an elevated temperature.
Claim 13
Dependent Claim
25 words
A process in accordance with claim 13 wherein the molar proportion of phenol is about 20 to about 75 times that of the dibenzothiacarbocyanine compound.
Claim 14
Dependent Claim
25 words
A process in accordance with claim 13 wherein the molar proportion of phenol is about 30 to about 55 times that of the dibenzothiacarbocyanine compound.
Claim 15
Dependent Claim
34 words
A process in accordance with claim 1 for preparing 3,3''-dimethyl-9-phenoxy-4,5;4'',5''-dibenzothiacarbocyanine p-toluenesulfonate which comprises reacting 3,3''-dimethyl-9-methylthio4,5;4'',5''-dibenzothiacarbocyanine p-toluenesulfonate with a molar excess of phenol in the presence of a basic condensing agent at an elevated temperature.
Claim 16
Dependent Claim
25 words
A process in accordance with claim 16 wherein the molar proportion of phenol is about 20 to about 75 times that of the dibenzothiacarbocyanine compound.
Claim 17
Dependent Claim
25 words
A process in accordance with claim 16 wherein the molar proportion of phenol is about 30 to about 55 times that of the dibenzothiacarbocyanine compound.
Claim 18
Dependent Claim
34 words
A process in accordance with claim 1 for preparing 3,3''-diethyl-9-phenoxy-4,5-benzothiacarbocyanine iodide which comprises reacting 3,3''-diethyl-9-ethylthio-4,5-benzothiacarbocyanine iodide with a molar excess of phenol in the presence of a basic condensing agent at an elevated temperature.
Claim 19
Dependent Claim
25 words
A process in accordance with claim 19 wherein the molar proportion of phenol is about 20 to about 75 times that of the benzothiacarbocyanine compound.
Claim 20
Dependent Claim
25 words
A process in accordance with claim 19 wherein the molar proportion of phenol is about 30 to about 55 times that of the benzothiacarbocyanine compound.
Claim 21
Dependent Claim
25 words
A process in accordance with claim 22 wherein the molar proportion of phenol is about 20 to about 75 times that of the 9-ethylthioselenathiacarbocyanine compound.
Claim 22
Dependent Claim
34 words
A process in accordance with claim 1 for preparing 3,3''-diethyl-9-phenoxyselenathiacarbocyanine iodide which comprises reacting 3,3''-diethyl-9-ethylthioselenathiacarbocyanine iodide with a molar excess of phenol in the presence of a basic condensing agent at an elevated temperature.
Claim 23
Dependent Claim
25 words
A process in accordance with claim 22 wherein the molar proportion of phenol is about 30 to about 55 times that of the 9-ethylthioselenathiacarbocyanine compound.
References Cited (Backward Citations)
US2156464A
Cited
FR1112495A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |