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专利名称：Process for the manufacture of pigments,
especially fluorescent pigments
发明人：Michel Jean Marcq,Martin Tanner申请号：US08/206160申请日：19940307公开号：US059453A公开日：19991123
摘要：A process for the manufacture of pigments comprising a colored compositionincorporated in a polycondensation resin, wherein the reactants for the formation of thepolycondensation resin and the colored composition are introduced continuously into anextruder, preferably at a temperature of between 100° C. and 280° C., the mixture iscaused to travel forward in the extruder, at the end of reaction the mixture is withdrawncontinuously from the extruder, and is deposited continuously onto a conveyor belt,broken up into thermoset flakes, and cooled, the conveyor belt having means for coolingand means for detaching the flakes from the belt. The process is particularly suitable forthe preparation of fluorescence pigments. Also disclosed are compositions comprisingdiketo-pyrrolo-pyrrole colorants and certain polyester or polyamide resins as well as aprocess for the preparation of the compositions.
申请人：SOCIETENOUVELLE DE CHIMIE INDUSTRIELLE S.A.,CIBA SPECIALTYCHEMICALS HOLDING, INC.
代理机构：Wenderoth, Lind & Ponack, LP.
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