Patent ID: 8013162

Claim:
A water compatible or water soluble sterically hindered hydroxy substituted alkoxyamine compound selected from the group consisting of compounds of formulae (5)-(7) where E is —O-T-(OH) b , T is a straight or branched chain alkylene of 1 to 18 carbon atoms, cycloalkylene of 5 to 18 carbon atoms, cycloalkenylene of 5 to 18 carbon atoms, a straight or branched chain alkylene of 1 to 4 carbon atoms substituted by phenyl or by phenyl substituted by one or two alkyl groups of 1 to 4 carbon atoms; b is 1, 2 or 3 with the proviso that b cannot exceed the number of carbon atoms in T, and when b is 2 or 3, each hydroxyl group is attached to a different carbon atoms of T; E′ is hydrogen, C 1 -C 18 alkyl, C 2 -C 18 alkenyl, C 7 -C 15 phenylalkyl, C 2 -C 18 alkanoyl or phenyl, alkoxy of 1 to 18 carbon atoms, cycloalkoxy of 5 to 12 carbon atoms or aralkoxy of 7 to 15 carbon atoms, or E′ is independently defined as for E, R is hydrogen or methyl, R 5 is a divalent homo- or co-oligomer consisting of monomer units derived from monomers selected from the group consisting of ethylene oxide, propylene oxide, ethylene glycol, propylene glycol, acrylic acid, methacrylic acid, ethylene imine, acrylamide, vinyl formamide, vinyl alcohol and vinyl acetate; which homo- or co-oligomer consists of between 2 and about 24 monomer units.