Dyeing agent compositions based on polypropylene wax

US4235641A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Manfred Engelmann · Burghausen, DE
• Karl-Heinz Maier · Nuremberg, DE
• Arno Spange · Eschborn, DE
• Bernd Dewald · Idstein, DE
• Hans-Joachim Lenz · Hofheim, DE
• Wolfgang Teige · Kelkheim, DE

Key dates

• Filing date: Jun 28, 1979
• Grant date: Nov 25, 1980
• Expiry date: Jun 28, 1999

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2423/00
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Preparations of insoluble colorants, especially pigments, are obtained by distributing the colorant in molten polypropylene wax having a viscosity of 0.5 to 5 Pa.s, determined at 170.degree. C., and an isotactic proportion of 40 to 90% by weight. These preparations are easily dispersible in polyolefins and especially useful for dyeing polypropylene in the mass.