Nitroxyl radicals and nitroxylethers beyond stabilization: radical generators for efficient polymer modification |
| |
Authors: | Rudolf Pfaendner |
| |
Institution: | aCiba Spezialitätenchemie Lampertheim GmbH, 68623 Lampertheim, Germany |
| |
Abstract: | Beyond traditional polymer stabilization, sterically hindered piperidine derivatives move into new application areas where radical functions are key elements. Recent achievements in using nitroxyl derivatives in degradation, polymerization and grafting processes are discussed together with the involved chemical reactions and the resulting material properties. The examples shown cover selected nitroxylethers (NORs) performing as flame retardants and flame retardant synergists or replacing peroxides in manufacturing controlled rheology polypropylene (PP). Furthermore, NORs and nitroxyl radicals mediate radical polymerization processes resulting in tailor-made intermediates for polymer modification via radical and condensation steps and offer access to complex polymer architecture. To cite this article: R. Pfaendner, C.R. Chimie 9 (2006). |
| |
Keywords: | Controlled polymerization Nitroxyl radicals Nitroxyl ethers Grafting Flame retardants Functional polymers |
本文献已被 ScienceDirect 等数据库收录! |