A pigment preparation which is characterized by a content in a) a benzimidazolonedioxazine compound of formula (I) as base pigment ##STR00001## and b) a dioxazine compound of the general formula (IV) as pigment dispersant ##STR00002## wherein Q represents an m-valent radical of a compound of formula (III), ##STR00003## wherein m is a number from 1 to 4.

 
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< Process for the preparation of Rivastigmine

> Conductive filler

> Modified polyimide resin and curable resin composition

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