Use of hydroperoxides as regulators in polymerizations

US6602951B2 · kind B2 · utility

Assignee

• WACKER POLYMER SYSTEMS GMBH & CO. KG · DE

Inventors

• Peter Weiler · Waterloo, CA
• Ulf Dietrich · Bad Kötzting, DE
• Peter Ball · Emmerting, DE

Key dates

• Filing date: Jan 29, 2002
• Grant date: Aug 5, 2003
• Expiry date: Jan 29, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2/38
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention provides for the use of non-copolymerizable hydroperoxides of the formula R—O—O—H as regulators in the free-radically initiated polymerization of ethylenically unsaturated monomers, where R is H, a C1-C18-alkyl radical, a C7-C22-aralkyl radical or a saturated or unsaturated carbocyclic or heterocyclic ring having from 3 to 18 carbon atoms, and may be substituted or unsubstituted.