Imation Corporation

Minnesota Mining and Manufacturing Company

Chau T Ha

William M Lamanna

Wayne M Hector

Cynthia J Kwiecien

A composition suitable for use as a polymer layer disposed on a semi-reflective layer in an optical medium, such as an optical storage medium. The polymer layer includes an acidic component that promotes adhesion of the polymer layer to the semi-reflective layer.

Polymer layer for optical media

An optical recording disk having a sealcoat layer provided on at least one surface of the disk, wherein the sealcoat layer is a cured composition obtained from ingredients comprising a radiation-curable component; a nonionic perfluoro surfactant; and a radiation curable silicone-containing compound. Optionally the sealcoat layer is a cured composition of ingredients further comprising an anticorrosion agent and photoinitiator.

Optical recording disk having a sealcoat layer

A radiation-curable composition that contains a radiation-curable component and a radiation-curable polydimethylsiloxane compound. The radiation-curable polydimethylsiloxane compound contains a polyoxyalkylene segment and is compatible with the radiation-curable component, so that the cured composition is relatively free from oranger-peel texture, haze, etc. Further, the cured composition provides improved frictional properties. The composition contains a significantly smaller amount of the polydimethylsiloxane than has been previously used. The composition is especially useful when applied to an optical recording disk.

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Saint Paul, MN, United States of America

Chau T Ha