Patent ID: 6852831

Claim:
Compounds of the formula I: characterized in that A is a C 1 -C 5 -alkylene radical which is optionally substituted at any desired point via a linker L by a urethane group and optionally bears further substituents, L is a methylene group, x is 0 or an integer of 1 or greater, n is an integer from 1 to 4 and R is an n-valent linear or branched, optionally substituted, aliphatic C 1 -C 22 radical, an n-valent, optionally substituted, cycloaliphatic C 3 -C 12 radical or an n-valent, optionally substituted, aromatic C 6 -C 14 radical, where, in the case that n is greater than 1, A and x is optionally each independently defined identically or differently.