N- alkoxy-4,4-dioxy - polyalkyl - piperidine compounds, radical polymerization controlled using their corresponding N- oxides and their

摘要

[Challenge] N- alkoxy 4,4-dioxy - polyalkyl - controlled piperidine compounds, were used and their oxides N- their corresponding radical polymerization [MEANS FOR SOLVING PROBLEMS] The two oxygen atoms to form a cyclic ketal structure, or open-chain, 4 position is substituted, it is selected the present invention, 1-alkoxy-2,2,6,6-tetramethylpiperidine, 1-alkoxy -2, The polymerizable composition comprising 2,6-diethyl-2,3,6-trimethyl 1-alkoxy-piperidine derivatives and 6,6-dimethyl-2-piperidine, diethyl, and b) the piperidine derivatives and at least one ethylenically unsaturated monomer a) about things. By two oxygen atoms forming for controlled polymerization and polymerization process, ethylenically unsaturated monomers, cyclic ketal structure or an open-chain, 4 position is substituted further aspect of the present invention, 1-alkoxy - it is 2,2,6,6-tetramethylpiperidine, the use of 2,6-diethyl 2,3,6-dimethyl piperidine derivatives 1-alkoxy-and 6,6-dimethyl-1-alkoxy-piperidine 2,2-diethyl . Compositions with intermediate N- oxyl derivatives, a free-radical initiator and ethylenically unsaturated monomer N- oxyl derivatives, and also the polymerization method, it is an aspect of the present invention.