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Home › Process for dyeing in the presence of oxidation bases comprising at least one sulfonic, sulfonamide, sulfone, amid or acid group and a metal catalyst, device and ready-to-use composition

Process for dyeing in the presence of oxidation bases comprising at least one sulfonic, sulfonamide, sulfone, amid or acid group and a metal catalyst, device and ready-to-use composition

US Patent 9872822 · Granted Jan 23, 2018

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