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Home › Asymmetric 1:2-chrome complexes of benzene-azo-naphthalene/naphthalene-azo-naphthalene acid dyes for leather

Asymmetric 1:2-chrome complexes of benzene-azo-naphthalene/naphthalene-azo-naphthalene acid dyes for leather

US Patent 4904767 · Granted Feb 27, 1990

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