Abstract: Optical disc, e.g., CD-R, DVD, DVD-R, comprising a polymer substrate and a radiation-cured coating provided by curing a radiation-curable coating composition having a pH greater than or equal to 3 and comprising at least one acrylate monomer, and advantageously diacrylate monomers and oligomers and monomers having acrylate functionalities of from 1 to at least 3, wherein the optical disc exhibits jitter of no greater than about 35 ns after being subjected to an environment having a temperature of at least 80° C. and a relative humidity of at least 85% for a period of at least 96 hours.

Abstract: Optical disc, e.g., CD-R, DVD, DVD-R, comprising a polymer substrate and a radiation-cured coating provided by curing a radiation-curable coating composition having a pH greater than or equal to 3 and comprising at least one acrylate monomer, and advantageously diacrylate monomers and oligomers and monomers having acrylate functionalities of from 1 to at least 3, wherein the optical disc exhibits jitter of no greater than about 35 ns after being subjected to an environment having a temperature of at least 80° C. and a relative humidity of at least 85% for a period of at least 96 hours.

Abstract: Optical disc, e.g., CD-R, DVD, DVD-R, comprising a polymer substrate and a radiation-cured coating provided by curing a radiation-curable coating composition having a pH greater than or equal to 3 and comprising at least one acrylate monomer, and advantageously diacrylate monomers and oligomers and monomers having acrylate functionalities of from 1 to at least 3, wherein the optical disc exhibits jitter of no greater than about 35 ns after being subjected to an environment having a temperature of at least 80° C. and a relative humidity of at least 85% for a period of at least 96 hours.

Abstract: 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.

Abstract: 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.

Abstract: 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.