Patent ID: 8895731

Claim:
Compound of formula I wherein A and B, which can be the same or different, are an NR1R2 group, or a group of formula II: wherein group W can be an alkyl, isoalkyl, cycloalkyl, aryl, alkoxy, halogen, nitro, nitrile, COX, —COOR4, or —CONR5R6 group or a group of formula III or IV X is a halogen; groups R—R10, which can be the same or different, are hydrogen, straight or branched C1-C12 alkyl, C3-C6 cycloalkyl, R1 and R2, or R5 and R6, and together with the nitrogen atom they are linked to, can also form a morpholino ring; with the proviso that A and B cannot be at the same time a group of formula II with W=-COX, R4, R5 and R6 can also be polyalkylene-polysiloxane groups, with the proviso that in the group COOR4, R4 cannot be hydrogen.