Resin composition for part of optical pick-up and optical pick-up part

Abstract

Abstract PURPOSE:To provide a composition having a specific density, containing a polyarylene sulfide resin, a fibrous filler and a powdery filler having a specific density, and capable of providing a part of optical pick-up generating little resonance and having excellent dimensional stability. CONSTITUTION:The objective resin composition for an optical pick-up part has a density of >=2g/cm<3> (preferably >=2.1g/cm<3>) and contains (A) 20-40wt.% (preferably 25-38wt.%) of a polyarylene sulfide resin. preferably polyphenylene sulfide containing >=80mol% of the recurring unit of formula, (B) 10-40wt.% (preferably 13-35wt.%) of a fibrous filler, preferably glass fiber having a length of 2-5mm and fiber diameter of 5-20mum and (C) 20-70wt.% (preferably 30-60wt.%) of a powdery filler having a specific gravity of >=3.5, preferably precipitated barium sulfate having particle diameter of 0.2-20mum.

Inventors

• 👤 Masahiro Nakamichi
• 👤 中道　昌宏
• 👤 Nobuyuki Inaba
• 👤 稲葉　信行

Bibliographic Details