2,2,6,6 diethyl-dimethyl-1-alkoxy-piperidine compounds and their corresponding 1-oxides
AssigneeCiba Specialty Chemicals Corporation
InventorsPeter Nesvadba, Marie-Odile Zink, Andreas Kramer
Life of this patent
Estimating the term…
Loading patent…
AssigneeCiba Specialty Chemicals Corporation
InventorsPeter Nesvadba, Marie-Odile Zink, Andreas Kramer
Estimating the term…
The present invention relates to selected 1-alkoxy-2,2 diethyl-6,6 dimethyl piperidine and 1-alkoxy-2,6 diethyl-2,3,6 trimethyl piperidine derivatives which are substituted in the 4 position by an oxygen or nitrogen atom; a polymerizable composition comprising a) at least one ethylenically unsaturated monomer and b) said piperidine derivatives. Further aspects of the present invention are a process for polymerizing ethylenically unsaturated monomers, and the use of 1-alkoxy-2,2 diethyl-6,6 dimethyl piperidine and 1-alkoxy-2,6 diethyl-2,6 dimethyl piperidine derivatives which are substituted in the 4 position by an oxygen or nitrogen atom 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 of the present invention.
A compound according to formula Ia or IIa
A compound selected from the group consisting of
A compound selected from the group consisting of
A polymerizable composition, comprising
A process for preparing an oligomer, a cooligomer, a polymer or a copolymer (block or random) by free radical polymerization of at least one ethylenically unsaturated monomer or oligomer, which comprises (co)polymerizing the monomer or monomers/oligomers in the presence of an initiator compound of formula Ia or IIa under reaction conditions capable of effecting scission of the O—C bond to form two free radicals, the radical .X being capable of initiating polymerization.
A compound of formula IIIa and IVa
A polymerizable composition, comprising
Dependencies are inferred from the claim text.