Claims
- 1. A dye of the formula ##STR8## wherein R.sup.1 is an alkyl group of from 1 to 12 carbon atoms,
- R.sup.2 is the group ##STR9## wherein X, Y, and Z are independently selected from the class consisting of H, NO.sub.2, CN, perfluoroalkyl of 1 to 4 carbon atoms and halogen, with the proviso that at least one of X and Y is NO.sub.2,
- R.sup.3, R.sup.4, and R.sup.5 are independently selected from the group consisting of H, halogen, alkyl or alkoxy of 1 to 4 carbon atoms, alkenyl of 2 to 4 carbon atoms, --CH.sub.2 --.sub.p COOH wherein p is 0, 1, 2, or 3, --NO.sub.2, --NH.sub.2, or --NHCOCH.sub.3, or any two of the adjacent groups are the atoms necessary to form a fused on benzene ring,
- D represents --HC.dbd.CH--, O, >C(CH.sub.3).sub.2, --S--, --Se--, or >NR.sup.7,
- R.sup.7 represents an alkyl group of 1 to 4 carbon atoms or CH.sub.3 CO--,
- n is 1 when k is 0 and k is 1 when n is 0,
- and m is 0, 1, 2, or 3.
- 2. A dye according to claim 1 having the formula: ##STR10## wherein R.sup.6 is alkyl of 1 to 8 carbon atoms,
- R.sup.7 is selected from the group consisting of alkyl, alkoxy, halogen, NO.sub.2, and aryl,
- R.sup.8 is selected from the group consisting of H, alkyl of 1 to 8 carbon atoms and alkoxy of 1 to 8 carbon atoms, and
- X, Y and Z are selected from the group consisting of H, NO.sub.2, CN, halogen, and perfluoroalkyl of 1 to 4 carbon atoms with the proviso that at least one of X, Y and Z is NO.sub.2.
- 3. The dye of claim 2 wherein R.sup.6 is alkyl of 1 to 4 carbon atoms, R.sup.8 is H, and X and Y are selected from the group consisting of NO.sub.2 and CN, and Z is selected from the group consisting of H, NO.sub.2, and CN.
- 4. The dye of claim 3 wherein X and Y are NO.sub.2 and Z is H.
- 5. A dye according to claim 1 selected from the group consisting of ##STR11##
- 6. A dye according to claim 1 having the structure ##STR12##
Parent Case Info
This is a division of application Ser. No. 964,480, filed Nov. 29, 1978, now U.S. Pat. No. 4,260,676.
US Referenced Citations (6)
Non-Patent Literature Citations (1)
Entry |
Van Allen et al., Chem. Abst. 83 (1975) #81171b. |
Divisions (1)
|
Number |
Date |
Country |
Parent |
964480 |
Nov 1978 |
|