N-ALKOXY-4,4-DIOXYPOLYALKYLPIPERIDINE COMPOUNDS WITH GLYCIDYL OR ALKYLCARBONYL GROUPS AS FUNCTIONAL INITIATING AGENTS FOR REGULATED RADICAL POLYMERIZATION Russian patent published in 2006 - IPC C07D211/94 C08F2/00 

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention relates to the chosen N-alkoxy-4,4-dioxypolyalkylpiperidine compounds comprising glycidyl or carbonyl functional groups and possessing acyclic or cyclic ketal structure. Invention describes compounds of formulae (Ia) , (IIa) or (IIIa) wherein D means group of the formula ; m means 1; n means 1; each among Y and Y' means independently (C₁-C₁₂)-alkyl, (C₃-C₁₂)-alkenyl, phenyl or benzyl, or Y and Y' form in common one of the following bivalent groups: -C(R₁)(R₂)-CH(R₃)-, -CH(R₁)CH₂-C(R₂)(R₃)-, -CH(R₂)-CH₂-C(R₁)(R₃)-, -CH₂-C(R₁)(R₂)-CH(R₃)-, -CH₂-CH=CH-CH₂- wherein R₁ means hydrogen atom, (C₁-C₁₂)-alkyl, -COO-(C₁-C₁₂)-alkyl or -CH₂OR₄; each among R₂ and R₃ means hydrogen atom, methyl, ethyl or -COO-(C₁-C₁₂)-alkyl; R₄ means hydrogen atom, (C₁-C₁₂)-alkyl, benzyl or monovalent acyl residue of aliphatic, cycloaliphatic or aromatic monocarboxylic acid comprising up to 12 carbon atoms; one R₁₂ means hydrogen atom (H) and another radical means -CH₃ group. Also, invention describes a composition able for polymerization, a method for preparing oligomer, co-oligomer, polymer or co-polymer, using compounds of the formulae (Ia), (IIa) or (IIIa) for polymerization of ethylene-unsaturated monomers, using compounds of the formulae (Ia), (IIa) or (IIIa) for breaking chain in anionic polymerization of diene or vinyl monomer, compounds of the formulae (Xd), (XId) and (XIId) given in the invention description. Proposed compounds provide preparing polymeric resinous substances showing low polydispersity and carrying out the polymerization process with good effectiveness in conversion of monomer to polymer.

EFFECT: valuable chemical properties of compounds.

15 cl, 7 tbl, 30 ex