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Home › Salicyl phenyl naphthyl trisazo di and trisulfonic developed direct black dyes

Salicyl phenyl naphthyl trisazo di and trisulfonic developed direct black dyes

US Patent 4279814 · Granted Jul 21, 1981

Estimated economic value: $391,000 ⓘ

Assignee

Crompton & Knowles

Inventors

Howard Smith (7 patents)

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