Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
Patent
1992-12-30
1995-03-07
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
528 85, 428 1, 430 20, 25229901, 25229966, 25229967, 25229968, C08G 1830
Patent
active
053959108
ABSTRACT:
The invention relates to a liquid-crystalline polyurethane having a side chain comprising a mesogenic group, giving a clear polyurethane which does not isomerize 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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de Wit Paulus P.
Erdhuisen Erwin W. P.
Reesink Johan B.
Akzo Nobel N.V.
Fennelly Richard P.
Johnson R.
Kight III John
Morris Louis A.
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