| abstract |
New Propenyloxy alkoxy benzoic acid esters are of formula CH2=C(R1)-COO (CH2)n - R3 (I). In the formula R1 is H or methyl; n is 1-10; R3 is O- m is 1-10. Polymers obtd. by radical polymerisation of (I) in bulk or soln. are claimed. The polymers can be used as liq. crystal devices in integrated optics ad opto-electronics, for information storage and as coatings, undergoing orientation when an electric field is applied. The polymers do not discolour in visible light and are resistant to hydrolysis. Orientation in an electric field is rapid, and is frozen in by cooling below TG. They show typical polymer properties in forming films, fibres, etc. and can be mixed with other liquid-crystal substances or polymers or copolymerised with other monomers. |