发明公开
EP0302516A2 Optical article made of amorphous thermoplastic polyester resin 失效
Optischer Gegenstand,hergestellt aus thermoplastischem amorphem Polyesterharz。

Optical article made of amorphous thermoplastic polyester resin
摘要:
An optical article such as optical disk and optical lens, made of an amorphous thermoplastic polyester resin comprised of recurring units, each recurring unit having an aromatic ring in the main chain thereof and an aromatic ring in the side chain thereof. The optical article have a good heat resistance, resistance to absorption of moisture and optical characteristics.
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