| abstract |
R 1 , R 2 C 1 -C 4 -Alkyl oder gemeinsam mit dem C-Atom, an das sie gebundennsind, einen 5- oder 6-gliedrigen gesÃĪttigten Kohlenwasserstoffring, R 3 C 1 -C 4 -Alkyl und R 4 Wasserstoff oder C 1 -C 12 -Alkyl bedeuten. The present invention relates to a method for compressing ethylenically unsaturated monomers to a pressure between 200 and 5000 bar in the absence of a polymerization initiator, which is characterized in that the compression in the presence of nitroxyl compounds of the formula I. is made, whereby R 1 , R 2 C 1 -C 4 alkyl or, together with the carbon atom to which they are attached, a 5- or 6-membered saturated hydrocarbon ring, R 3 C 1 -C 4 alkyl and R 4 Is hydrogen or C 1 -C 12 alkyl. n n n Furthermore, the present invention relates to a method fornProduction of copolymers by appropriate compression andnsubsequent polymerization and copolymers obtainable after thisnMethod. |