DATA STORAGE MEDIA CONTAINING CLEAR POLYCARBONATE BLENDS
摘要
<p>The invention relates to polymer blends suitable for use in optical article. They comprise a first polycarbonate based on alkyl substituted cyclo alkylidene bisphenols e.g. 1,1-bis (4-hydroxy-3-methyl phenyl) cyclohexane and a second aromatic polycarbonate or polyester carbonate e.g. bisphenol-A polycarbonate. The blends have properties particularly suited for use in high density optical data storage media.</p>
