Patent ID: 6984741

Claim:
At least one compound of the formula (II), wherein R 1 is hydrogen or C 1 –C 12 -alkyl, and R 2 are in each case independently of one another: fluorine, chlorine, bromine, iodine, C 1 –C 12 -alkyl, C 1 –C 12 -alkoxy, hydroxyl, NR 3 R 4 or CONR 3 R 4 , where R 3 and R 4 are each, independently of one another, hydrogen or C 1 –C 12 -alkyl, or NR 3 R 4 as a whole is a cyclic amino radical having 4 to 12 carbon atoms, COO—(C 1 –C 12 -alkyl), —COO(C 4 –C 24 -aryl), —COO(C 5 –C 25 -arylalkyl), CO(C 1 –C 12 -alkyl), CO(C 4 –C 24 -aryl) or C 1 –C 12 -fluoroalkyl and n is zero, one, two or three, or in the case where n is two or three it is possible for two adjacent R 2 substituents to be part of a fused ring system which in turn may optionally be substituted by the radicals mentioned above for R 2 .