Patent ID: 7153973

Claim:
A compound of the formula (IA) or (IB) wherein G 1 , G 2 , G 3 and G 4 are independently of one another C 1 –C 18 alkyl or C 5 –C 12 cycloalkyl or the radicals G 1 and G 2 and the radicals G 3 and G 4 form independently of one another, together with the carbon atom they are attached to, C 5 –C 12 cycloalkyl; R is C 1 –C 18 alkyl, C 1 –C 18 hydroxyalkyl, C 2 –C 18 alkenyl, C 5 –C 12 cycloalkyl, C 7 –C 12 phenylalkyl unsubstituted or substituted on the phenyl radical by C 1 –C 4 alkyl and/or C 1 –C 4 alkoxy; or C 1 –C 18 alkanoyl; n is 1, 2,3 or 4; X is an organic radical other than a heterocycle or a triazine of a valency equal to n; when n is 2, 3 or 4, each of the radicals G 1 , G 2 , G 3 , G 4 and R can have the same or a different meaning in the units of the formula with the proviso that when n is 1, R is methyl, ethyl, propyl, C 1 –C 18 hydroxyalkyl, C 2 –C 18 alkenyl, C 5 –C 12 cycloalkyl or C 1 –C 13 alkanoyl.