Photographic polyester film support

Details Photographic polyester film support Photographic polyester film support

1978-08-30

1980-07-29

Person, Sandra M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

430512, 430517, C08K 508, C08K 534

Patent

active

042150302

ABSTRACT:
A photographic polyester film support dyed with a dye having a main absorption peak in the wavelength range of about 350 to about 570 nm, a dye having a main absorption peak in the wavelength range of about 640 to about 680 nm, and a dye having a main absorption peak in the wavelength range of about 420 to about 460 nm which is represented by the following formula (I) or (II): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which may be the same or different, each represents --H, --OH, --NH.sub.2, --NHR.sub.5, --NR.sub.5 R.sub.6, --Cl, --Br, an alkyl group having 4 or less carbon atoms or an alkoxy group having 4 or less carbon atoms; R.sub.5 and R.sub.6, which may be the same or different, each represents an alkyl group having 4 or less carbon atoms or an aryl group; X.sub.1 and X.sub.2, which may be the same or different, each represents --H, --Cl, --Br or an alkyl group having 4 or less carbon atoms; and Y represents --H, --Cl or --Br, with the proviso that R.sub.1, R.sub.2, R.sub.3 and R.sub.4 in the formula (I) are not simultaneously --H.

REFERENCES:
patent: 1994876 (1935-03-01), Schneider et al.
patent: 3184457 (1965-05-01), Bronnock et al.
patent: 3821001 (1974-06-01), Weber
patent: 3918976 (1975-11-01), Arai et al.
patent: 3948664 (1976-04-01), Okuyama et al.

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