PHOTOGRAPHIC ELEMENTS INCLUDING NONDIFFUSIBLE PHOTOGRAPHIC COUPLERS HAVING THE BALLAST GROUP TERMINATED BY A HYDROXYPHENYLSULFONYL OR -SULFINYL GROUP

摘要

Photographic couplers comprising a coupler moiety and a ballast moiety have advantageous properties when the ballast moiety is terminated with a hydroxyphenylsulfonyl or hydroxyphenylsulfinyl group. The couplers are useful in photographic emulsions and elements. Illustrative couplers are represented by the structural formula: < IMG > where: COUP represents a coupler moiety; p is 1 or 2; q is 1 to 3; and L is direct linkage or a bivalent linking group.