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Home › Preparation of granules of dyes, optical whiteners or photoactivators from an aqueous suspension of naphthalene sulfonic acid-formaldehyde condensate dispersant

Preparation of granules of dyes, optical whiteners or photoactivators from an aqueous suspension of naphthalene sulfonic acid-formaldehyde condensate dispersant

US Patent 5030244 · Granted Jul 9, 1991

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