A composition suitable for producing a polymer film having a fixed optical response, obtained polymer film and its production process

This composition comprises a photopolymerizable monomer having the structure: (CF DRAWING IN BOPI) R or CH; A -R-, -RO-, OR -RO-; R ALKYLENE CHAIN ​​WITH 3 TO 14 METHYLENE GROUPS MAY BE SUBSTITUTED OR ALKYL GROUPS LOWER; R ALKYLENE CHAIN ​​WITH 2 A 14 METHYLENE GROUPS MAY BE SUBSTITUTED OR ALKYL GROUPS LOWER; R ALKYLENE Ether, DIETHER triether OR WITH 3 TO 14 CARBON ATOMS IN MEMBERED ALKYLENE, PROVIDED THAT THE TERMINAL CHAINON ALKYLENE ADJACENT TO UNDERSTAND DO NOT FRAGMENT CARBONATE UNDER 2 CARBON ATOMS AND Y 0 OR 1; And photoinitiator APPROPRIATE. CAN SHAPING THE SAME IN FILM, THE HEAT OR COOL TO ENSURE THE FILM cholesteric THIS RESPONSE AND OPTICAL DESIREE CURING TO FIX SUBSTANTIALLY THE OPTICAL CHARACTERISTICS OF POLYMER RESULTING.