N-ALKOXY-4,4-DIOXY-POLYALKYL-PIPERIDINE COMPOUNDS, THEIR CORRESPONDING N-OXIDES AND CONTROLLED RADICAL POLYMERIZATION THEREWITH

• Main Authors: NESVADBA PETER, WUNDERLICH WIEBKE, ZINK MARIE-ODILE
• Format: Patent
• Language: English
• Published: 25.03.2010
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; HETEROCYCLIC COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC CHEMISTRY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

PROBLEM TO BE SOLVED: To provide N-alkoxy-4,4-dioxy-polyalkyl-piperidine compounds, their corresponding N-oxides and controlled radical polymerization therewith. SOLUTION: The invention relates to selected 1-alkoxy-2,2,6,6-tetramethyl piperidine, 1-alkoxy-2,2-diethyl-6,6-dimethyl piperidine and 1-alkoxy-2,6-diethyl-2,3,6-trimethyl piperidine derivatives which are substituted at the 4 positions by two oxygen atoms forming an open chain or cyclic ketal structure, a polymerizable composition comprising at least one ethylenically unsaturated monomer (a) and the piperidine derivatives (b). Further aspects of the invention are a process for polymerizing ethylenically unsaturated monomers, and the use of 1-alkoxy-2,2,6,6-tetramethyl piperidine, 1-alkoxy-2,2-diethyl-6,6-dimethyl piperidine and 1-alkoxy-2,6-diethyl-2,3,6-dimethyl piperidine derivatives which are substituted at the 4 positions by two oxygen atoms forming an open chain or cyclic ketal structure for controlled polymerization. The intermediate N-oxyl derivatives, a composition of the N-oxyl derivatives with ethylenically unsaturated monomers and a free radical initiator, as well as a process for polymerization are also subjects. COPYRIGHT: (C)2010,JPO&INPIT