| abstract |
The invention relates to compounds of formula (I): (R 11 O) s Si(CH 3 ) 3-s -Sp 11 -NR 12 -Sp 12 -C(OR 13 ) t H 3-t , wherein the parameter are defined in claim 1, a method for their preparation, to the use of compounds of formula I as adhesion promotors in polymerisable liquid crystal (LC) material, to a polymer film comprising a polymerised material with improved adhesion to a substrate, to methods for preparing such a polymer film, to a corresponding polymerisable LC material used for the preparation of such a polymer film, and to the use of the polymer film and said polymerisable LC material for optical, electrooptical, decorative or security uses and devices. |