Synthesis of improved binders and modified tacticity

US8426497B2 · kind B2 · utility

Assignee

• Evonik Röhm GmbH · DE

Inventors

• Helmut Schwind · Hanau, DE
• Uwe-Martin Wiesler · Darmstadt, DE
• Cornelia Borgmann · Frankfurt, DE
• Heike Leuninger · Mainz, DE
• Thomas Schmied · Bad König, DE
• Stefanie Maus · Frankfurt, DE
• Werner Friedrich · Auckland, NZ
• Sven Balk · Frankfurt, DE

Key dates

• Filing date: Feb 2, 2009
• Grant date: Apr 23, 2013
• Expiry date: Sep 20, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F20/10
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a process for preparing polymers for coating applications by polymerizing esters of acrylic acid or of methacrylic acid or vinyl aromatics or other free-radically polymerizable vinyl compounds or monomer mixtures composed predominantly of such monomers by means of a continuous polymerization process. In particular, the invention relates to a solvent-free preparation process for polymers, through which the binder can be prepared for coating applications with superior processing properties, very good thermal stability, improved pigment wetting and a higher gloss.