Process for the preparation of granules

Details Process for the preparation of granules Process for the preparation of granules

C - Chemistry, Metallurgy

09

B

8/47, 8/52

C09B 67/06 (2006.01) B01D 1/18 (2006.01) C09B 67/00 (2006.01) C09B 67/42 (2006.01) D06L 3/12 (2006.01) D06P 1/56 (2006.01)

Patent

CA 1334239

Process for the preparation of granules by spray-drying of an aqueous suspension having a solids content of greater than/equal to 30 % and containing at least one dye, fluorescent brightener or photoactivator and one condensation product from naphthalenesulfonic acid and formaldehyde and, if necessary, further auxiliaries and/or diluents. The spray-drying is carried out at a feed pressure of 50-150 bar, the residual moisture content of the product is less than 4 %, and the granules obtained are in particular very pressure resistant and abrasion resistant.

601876

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