Substrates for optical storage media

Details Substrates for optical storage media Substrates for optical storage media

G - Physics

11

B

G11B 7/24 (2006.01) C08F 8/04 (2006.01) G11B 7/253 (2006.01)

Patent

CA 2373712

The invention relates to substrates based on vinylcyclohexane homopolymers, copolymers and blockpolymers, wherein comonomers are selected from the group consisting of olefins, acrylic acid derivatives, maleic acid derivatives, vinyl ether and vinyl ester or mixtures thereof and from at least two comonomers. The invention is characterized in that the moment of inertia of the substrate ranges from 280 to 50 g.cm2 and specific density from 1 to 0.8 g/cm3.

L'invention concerne des substrats à base d'homopolymères, de copolymères et/ou de polymères séquencés de vinylcyclohexane, les comonomères étant sélectionnés dans le groupe des oléfines, dérivés d'acide acrylique, dérivés d'acide maléïque, éthers vinyliques et esters vinyliques ou leurs mélanges constitués d'au moins deux comonomères. Ces substrats sont caractérisés en ce que leur moment d'inertie est compris entre 280 et 50 g/cm?2¿ et leur masse volumique spécifique entre 1 et 0,8 g/cm?3¿.

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