Liquid crystalline polyesters

Details Liquid crystalline polyesters Liquid crystalline polyesters

C - Chemistry, Metallurgy

08

G

402/199, 88/97.6

C08G 63/68 (2006.01) C08G 18/38 (2006.01) C08G 18/67 (2006.01) C09K 19/38 (2006.01) G02F 1/35 (2006.01) G02F 1/361 (2006.01) G11B 7/245 (2006.01) G11B 7/25 (2006.01)

Patent

CA 1323724

Abstract Liquid crystalline side-chain polyesters prepared by polycondensing a dicarboxylic acid or a derivative thereof with a diol of a certain general formula. or such diols the essence is that they have a delocalized .pi. electron system to which both an electron donor group and an electron acceptor group are coupled directly (D.pi.A-system). Because of the structure of the diol to which the D.pi.A-system is linked the polyesters exhibit excellent Tg and Tc values. The polyesters are to be used in optical waveguides or for optical data storage.

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