Depot polymerization starter beads

US6960638B2 · kind B2 · utility

Assignee

• ROEHM GMBH & CO. KG · DE

Inventors

• Peter Quis · Darmstadt, DE
• Heike Heeb · Niederrodenbach, DE
• Helmut Schwind · Hanau, DE
• Harald Draeger · Rodenbach, DE

Key dates

• Filing date: Jul 9, 2002
• Grant date: Nov 1, 2005
• Expiry date: Jul 9, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F220/1804
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The invention relates to polymer beads having a high content of diacyl peroxides. A prolongation of the pot life in reaction resins based on high-boiling methacrylate esters is achieved due to this high content of peroxides.