Compositions – Light transmission modifying compositions – Infrared
Patent
1991-09-23
1996-06-11
Tucker, Philip
Compositions
Light transmission modifying compositions
Infrared
25229901, 25229967, 25229966, 528272, 528308, 5283087, F21V 904, C09K 1952
Patent
active
055252656
ABSTRACT:
Disclosed are liquid-crystalline and infrared-sensitive liquid-crystalline polyesters for optical data storage, processes for the preparation of the same, and an apparatus comprising an infrared-sensitive liquid-crystalline polyester. Owing to covalently bonded dye the liquid crystalline polyester is infrared sensitive and high concentrations of dye are obtainable, without having detrimental effects on the properties of the liquid-crystalline polyester. This results in a highly sensitive liquid-crystalline polyester for optical data storage. Infrared dyes which are preferably bonded in liquid-crystalline polyester are croconium, squarilium, azo, and azamethine dyes.
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de Wit Paulus P.
Erdhuisen Erwin W. P.
Griffiths John
Akzo Nobel N.V.
Mancini Ralph J.
Morris Louis A.
Tucker Philip
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