Process for the production of negligibly dusty preparations of dyes and optical brighteners
AssigneeCiba-Geigy Corporation
InventorKonrad Neumann
Life of this patent
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Abstract
Described is a process for the production of negligibly dusty preparations of dyes and/or optical brighteners, which process comprises mixing an adhesive as e.g. sorbitol and a dust binding surface active agent into a mixture of dye or optical brightener and, optionally, further additives.
Claims15
Process for the production of negligibly dusty pulverulent preparations of dyes, optical brighteners or mixtures thereof, which process comprises mixing an adhesive selected from the group consisting of sorbitol, hydrated dextrose, glucose, lactose, neopentyl glycol, mannitol, mannose and polyethylene glycol having a molecular weight of above 3000 and a dust-binding agent, selected from the group consisting of fatty acid ethanolamides, fatty acid amides, polyethylene glycols with a molecular weight of 200 to 1,000, condensation products from fatty acids, aliphatic alcohols, phenol or alkyl phenols with ethylene oxide, and copolymers of ethylene oxide and propylene oxide, into a preparation of dye, optical brightener or mixtures thereof.
Dependencies are inferred from the claim text.