High-purity naphthol as pigments

Details High-purity naphthol as pigments High-purity naphthol as pigments

C - Chemistry, Metallurgy

09

B

C09B 41/00 (2006.01) C09B 67/54 (2006.01)

Patent

CA 2563812

Naphthol AS pigments of formula (IV) have a maximum content of the secondary components (1) to (5) defined by the following upper limits (see the table).

L'invention concerne des pigments de naphtol-AS ultra-purs représentés par la formule (IV), dont la teneur maximale en constituants secondaires (1) à (5) est définie par les limites maximales indiquées dans le tableau.

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