Method for producing a granular formulation of...

Details Method for producing a granular formulation of... Method for producing a granular formulation of...

2007-05-08

2009-10-27

Douyon, Lorna M (Department: 1796)

Bleaching and dyeing; fluid treatment and chemical modification

Dye or potential dye composition, additive, treatment,...

C008S402000, C008S506000, C008S524000, C008S562000, C008S617000, C008S645000, C008S648000, C106S031580, C241S021000, C523S160000, C523S161000, C523S223000, C524S035000, C524S556000

Reexamination Certificate

active

07608117

ABSTRACT:
The present invention relates to a method of producing a granular formulation of colorants soluble in plastics, which method comprises suspending in water a filter cake obtained from preparation of the colorant, adding thereto from 0.1 to 5.0% by weight, calculated with respect to the weight of colorant, of a polyvinylpyrrolidone and, where appropriate, further adjuvants, and then drying the aqueous suspension to form granules, to the granular formulations obtainable according to that method, and to the use thereof in the production of colored plastics or colored polymeric particles.

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Billmeter et al., “Principles of Color Technology,” Wiley-Interscience, 2nd edition, pp. 110-115.

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