Claims
- 1. A light-sensitive silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer containing a two-equivalent yellow coupler represented by the following formula: ##STR43## wherein R.sup.1 and R.sup.2 each represent an alkyl group or a cycloalkyl group; R.sup.3 represents an unsubstituted alkyl group or cycloalkyl group; and Z represents >C (R.sup.4)R.sup.5 or >NR.sup.4 where R.sup.4 and R.sup.5 each represent a hydrogen or a substituent.
- 2. The material of claim 1 wherein Z in the formula (I) is >C(R.sup.4)R.sup.5.
- 3. The material of claim 2 wherein R.sup.1 is a t-butyl group; R.sup.2, R.sup.4 and R.sup.5 are all methyl groups and R.sup.3 is an alkyl group having 15 to 21 carbon atoms.
- 4. The material of claim 2 wherein R.sup.4 is hydrogen.
- 5. The material of claim 2 wherein
- R.sup.1 is a t-butyl group;
- R.sup.2 is a methyl group;
- R.sup.3 is an alkyl group with 15 to 21 carbon atoms;
- R.sup.4 is hydrogen; and
- R.sup.5 is a methyl group or hydrogen.
- 6. The method of claim 5 wherein R.sup.5 is hydrogen.
- 7. The method of claim 5 wherein R.sup.5 is methyl.
- 8. The material of claim 1 wherein Z in the formula (I) is >NR.sup.4.
- 9. The material of claim 8 wherein R.sup.1 is a t-butyl group; R.sup.2 and R.sup.4 are both methyl groups and R.sup.3 is an alkyl group having 15 to 21 carbon atoms.
- 10. The material of claim 8 wherein R.sup.4 is hydrogen.
- 11. The method of claim 8 wherein
- R.sup.1 is a t-butyl group;
- R.sup.2 is a methyl group;
- R.sup.3 is an alkyl group with 15 to 21 carbon atoms; and
- R.sup.4 is hydrogen.
- 12. The material of claim 1 wherein the substituent R.sup.3 in the formula (I) is a straight alkyl group.
- 13. The material of claim 12 wherein the substituent R.sup.3 in the formula (I) is an alkyl group having 15 to 21 carbon atoms.
- 14. The material of claim 13 wherein the substituent R.sup.1 in the formula (I) is a t-butyl group, and R.sup.2, R.sup.4 and R.sup.5 are all methyl groups.
- 15. The material of claim 1 wherein R.sup.1 is a t-butyl group, R.sup.2 is a methyl group, R.sup.3 is an alkyl group having 13, 15, 17 or 21 carbon atoms and Z is >C(CH.sub.3).sub.2.
- 16. The material of claim 1 wherein R.sup.4 is hydrogen.
Priority Claims (1)
Number |
Date |
Country |
Kind |
4-077214 |
Mar 1992 |
JPX |
|
Parent Case Info
This application is a continuation of application Ser. No. 08/037,084, filed Mar. 25, 1993 (abandoned).
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
4314023 |
Kojima et al. |
Feb 1982 |
|
5070003 |
Naruso et al. |
Dec 1991 |
|
5215877 |
Tomotake et al. |
Jun 1993 |
|
Foreign Referenced Citations (28)
Number |
Date |
Country |
0475615 |
Mar 1992 |
EPX |
2213461 |
Nov 1972 |
DEX |
2429637 |
Jan 1975 |
DEX |
2600166 |
Jul 1976 |
DEX |
50-6341 |
Jan 1975 |
JPX |
50-132926 |
Oct 1975 |
JPX |
52-115219 |
Sep 1977 |
JPX |
63-123047 |
May 1988 |
JPX |
3-125140 |
May 1991 |
JPX |
3-125141 |
May 1991 |
JPX |
3-209241 |
Sep 1991 |
JPX |
3-209242 |
Sep 1991 |
JPX |
3-209243 |
Sep 1991 |
JPX |
3-209244 |
Sep 1991 |
JPX |
3-209460 |
Sep 1991 |
JPX |
3-209461 |
Sep 1991 |
JPX |
3-209462 |
Sep 1991 |
JPX |
3-209463 |
Sep 1991 |
JPX |
3-209464 |
Sep 1991 |
JPX |
3-209465 |
Sep 1991 |
JPX |
3-209466 |
Sep 1991 |
JPX |
3-209467 |
Sep 1991 |
JPX |
3-209470 |
Sep 1991 |
JPX |
3-211548 |
Sep 1991 |
JPX |
3-211549 |
Sep 1991 |
JPX |
3-229248 |
Oct 1991 |
JPX |
4-124661 |
Apr 1992 |
JPX |
2078988 |
Jan 1982 |
GBX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
37084 |
Mar 1993 |
|