Patent ID: 7368525
Filing Date: 2008-05-06
Classification: C08F,C08K

Abstract:
1. A process for the preparation of a polymeric alkoxyamine by atom transfer radical addition polymerization (ATRA) comprising the steps a) reacting a mono nitroxide of formula (A) X-Ln-NO. (A); or b) reacting a bis nitroxide of formula (B) .ON-Ln-NO. (B) with a bis-functional compound of formula (C) X-Lh-X (C); or c) reacting a polynitroxide of formula (D) Ln-[NO.] in the presence of a transition metal or transition metal salt in its lower oxidation state and optionally a ligand, capable of complexing the transition metal or transition metal salt; wherein X is halogen or —SCN; Ln is a n valent spacer group connecting the nitroxide group with the group X or with the other nitroxide groups; Lh is a n valent spacer group connecting the groups X and n is a number from 3 to 6.