LAMINATED HEAT-RESISTANT OPTICAL PLASTIC SHEET AND PROCESS FOR PRODUCING THE SAME

摘要

A laminated optical plastic sheet excellent in heat resistance and transparency, and composed of the first layer comprising a transparent polymer represented by polyarylate or polycarbonate and the second layer comprising a transparent material having a glass transition temperature lower than that of the first player. The sheet has impact resistance and rigidity and is excellent in optical characteristics, thus being useful as a substrate for optoelectronics elements.