Fast coupling lemon-yellow phenolic couplers

Details Fast coupling lemon-yellow phenolic couplers Fast coupling lemon-yellow phenolic couplers

1982-09-30

1987-02-10

Lesmes, George F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Sulfur containing

568 29, 568 33, 568 34, 568 37, 8524, 430 60, C07C14800

Patent

active

046423834

ABSTRACT:
Substituted 2,2'-dihydroxydiphenyl sulfide, sulfoxide, and sulfone compounds, and their use as azo coupling components in light-sensitive diazo compositions. The novel compounds couple with rapidly developing diazonium compounds to provide lemon-yellow dyes, and can be used in combination with blue and violet couplers to provide a green-black diazo image in higher density areas with a neutral black in lower density areas.

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