Moldable unsaturated polyester compositions

Details Moldable unsaturated polyester compositions Moldable unsaturated polyester compositions

C - Chemistry, Metallurgy

08

G

400/4503, 400/57

C08G 63/46 (2006.01) C08K 5/11 (2006.01) C08L 67/06 (2006.01)

Patent

CA 1184697

ABSTRACT An optical recording medium as shown in Figure 3 containing a light-absorbing film 32 of refractory material less than 60 nm thick and which is sufficiently plastic to allow plastic information upon localized heating is provided for exposure to a focused laser beam 20, whereupon localized heating of the light-absorbing film enables information storage in the form of localized protuberances 38 in the heated areas which can subsequently be optically detected and can he used as a master information record for replication purposes.

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