| 摘要 |
PROBLEM TO BE SOLVED: To provide monomers, 1-akoxy-2,2-diethyl-6,6-dimethylpiperidines and 1-alkoxy-2,6-diethyl-2,3,6-trimethylpiperidine derivatives that can give the homopolymer and random copolymer resin products with high conversion from the monomers to the polymers. SOLUTION: This invention relates to selected 1-akoxy-2,2-diethyl-6,6- dimethylpiperidines and 1-alkoxy-2,6-diethyl-2,3,6-trimethylpiperidine derivatives where they are substituted with an O or N atom in the 4-position and relates to polymerizing compositions that comprise a) at least one selected from ethylenically unsaturated monomers and b) the piperidine derivative. In another embodiment, the polymerizing composition comprising the ethylenically unsaturated monomer and the 1-akoxy-2,2-diethyl-6,6-dimethylpiperidines and 1-alkoxy-2,6- diethyl-2,3,6-trimethylpiperidine derivatives is used for polymerization. This invention also relates to the intermediate, N-oxyl derivative, the compositions including the intermediate N-oxyl derivative, an ethylenically unsaturated monomer and a free radical initiator and the polymerization process thereof.
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