Claims
- 1. A dye which satisfies the formula: ##STR34## where R.sup.1, R.sup.2, and R.sup.5 each independently represent hydrogen, alkyl, or aryl;
- R.sup.3 and R.sup.4 each independently represent alkyl; or
- at least one of the substituent pairs represented by R.sup.1 and R.sup.4, R.sup.2 and R.sup.3, and R.sup.3 and R.sup.4 complete a 5- or 6-membered ring containing the formula nitrogen atom as the sole heteroatom;
- W.sup.1 represents ##STR35## and R.sup.13 represents a 3-coumarinyl group;
- alkyl in each occurrence containing from 1 to 8 carbon atoms and aryl in each occurrence being phenyl or naphthyl.
- 2. A dye according to claim 1 in which the 3-coumarinyl group satisfies the formula: ##STR36## where R.sup.6 and R.sup.7 each independently represent hydrogen, alkyl, or aryl;
- R.sup.8 and R.sup.9 each independently represent alkyl; or
- at least one of the substituent pairs represented by R.sup.6 and R.sup.9, R.sup.7 and R.sup.8, and R.sup.8 and R.sup.9 complete a 5- or 6-membered ring containing the formula nitrogen atom as the sole heteroatom;
- alkyl in each occurrence containing from 1 to 8 carbon atoms and aryl in each occurrence being phenyl or naphthyl.
- 3. A dye according to claim 6 in which R.sup.6, R.sup.7, R.sup.8, and R.sup.9 complete a julolidine ring structure.
- 4. A 7-(N,N-dialkylamino)-3-{3-[6-(N,N-dialkylamino)benzo[b]furanyl]acryloyl}coumarin.
- 5. 9-[3-(2,3,6,7-Tetrahydro-1H,5H-benzo-[i,j]furano[3,2-g]quinolinizin-9-yl)acryloyl]-1,2,4,5-tetrahydro-3H,6H,10H[1]benzopyrano[9,9a,1-gh]quinolazin-10-one.
Parent Case Info
This is a division of U.S. Ser. No. 191,948, filed May 9, 1988, now U.S. Pat. No. 4,900,831.
US Referenced Citations (9)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2083832A |
Mar 1982 |
GBX |
Non-Patent Literature Citations (2)
Entry |
Chen et al, U.S. Ser. No. 191,947, filed 9 May 88, titled Dye Sensitized Photographic Imaging Systems. |
Soo et al, "Sur. Ouelg. Prop. Formyl-2-benzofuran", Bull. Soc. Chim. France, pp. 1875-1877 (1962). |
Divisions (1)
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Number |
Date |
Country |
Parent |
191948 |
May 1988 |
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