Dispersing agent for pigment concentrates, its use and masterbatches comprising the dispersing agent

US7947777B2 · kind B2 · utility

Assignee

• BYK-CHEMIE GMBH · DE

Inventors

• Karlheinz Haubennestel · Wesel, DE
• Alfred Bubat · Xanten, DE
• Udo Krappe · Nideggen, DE
• Bärbel Gertzen · Nideggen, DE
• Joerg Garlinsky · Wesel, DE
• Wolfgang Pritschins · Wesel, DE

Key dates

• Filing date: Mar 10, 2005
• Grant date: May 24, 2011
• Expiry date: Oct 30, 2026

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2467/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to polyesters which contain carboxy groups and which are used as dispersing agents for pigment concentrates for the colouring of thermoplastics, and to a process for their preparation. The invention further relates to the use of the polyesters as dispersing agents, and also to masterbatches which comprise pigments, thermoplastics and the polyesters.