发明名称 LIQUID CRYSTAL POLYMER COMPOSITION FOR OPTICAL PICKUP AND OPTICAL PICKUP
摘要 PROBLEM TO BE SOLVED: To obtain a liquid crystal polymer composition reduced in the tendency to form burrs when molded and improved in the environmental stability of a laser focal point, dimensional accuracy, and vibration-damping properties by including a liquid crystal polymer with a particulate filler and a fibrous filler in a specified ratio. SOLUTION: This composition comprises 100 pts.wt. liquid crystal polymer having a relative viscosity of at least 2.0 dl/g, desirably, 2.0-10.0 dl/g as measured in a 0.1 wt.% solution in pentafluorophenol at 60 deg.C, 5-100 pts.wt., desirably, 10-80 pts.wt. at least one particulate filler selected from among talc, titanium oxide, glass beads, and silica and having a mean particle diameter of 0.1-50μm and an average aspect ratio of 1-2, and 5-100 pts.wt., desirably, 10-80 pts.wt. at least one fibrous filler selected from a milled fiber and wollastonite and having an average fiber diameter of 0.5-20μm and an average aspect ratio of at most 10. The total content of the fillers is at most 150 pts.wt., desirably, at most 110 pts.wt.
申请公布号 JP2000273320(A) 申请公布日期 2000.10.03
申请号 JP19990075970 申请日期 1999.03.19
申请人 POLYPLASTICS CO 发明人 MIYASHITA TAKAYUKI;KOBAYASHI HIROYUKI;OTAKE MINEO
分类号 G11B7/12;C08K3/22;C08K3/34;C08K3/36;C08K3/40;C08K7/10;C08L77/12;C08L101/12;(IPC1-7):C08L101/12 主分类号 G11B7/12
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