Liquid crystalline polyurethanes and a medium for optical...

Details Liquid crystalline polyurethanes and a medium for optical... Liquid crystalline polyurethanes and a medium for optical...

C - Chemistry, Metallurgy

08

G

C08G 18/32 (2006.01) C08G 18/38 (2006.01) C09K 19/20 (2006.01) C09K 19/38 (2006.01) G11B 7/24 (2006.01) G11B 7/25 (2006.01)

Patent

CA 2086353

Abstract The invention relates to a liquid-crystalline polyurethane having a side chain comprising a mesogenic group, giving a clear polyurethane which does not isomerise under the influence of light. Such liquid- crystalline polyurethanes are highly suited to be used for optical data storage. The invention further relates to infrared-sensitive liquid-crystalline polyurethanes and liquid-crystalline polyurethane compositions, films containing said liquid-crystalline polyurethanes or polyurethane compositions, and a device for optical data storage containing said liquid-crystalline polyurethanes or polyurethane compositions.

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