发明名称 |
Methacrylic resin composition for optical discs |
摘要 |
A methacrylic resin composition for optical discs comprising 100 parts by weight of a copolymer composed of from 95 to 99.7% by weight of methyl methacrylate (A) and from 0.3 to 5% by weight of at least one monomer (B) selected from the group consisting of methyl acrylate, ethyl acrylate and butyl acrylate, and having a heat distortion temperature of at least 95 DEG C., a melt flow rate of from 1.0 to 10.0 g/10 min and a tensile strength of at least 660 kg/cm2, and from 0.05 to 2.0 parts by weight of at least one releasing agent (C) selected from the group consisting of a fatty acid alkyl ester of the formula R1COOR2 wherein each of R1 and R2 is an alkyl group having from 5 to 20 carbon atoms, cetanol and a stearic acid glycerol ester.
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申请公布号 |
US5252440(A) |
申请公布日期 |
1993.10.12 |
申请号 |
US19920866303 |
申请日期 |
1992.04.13 |
申请人 |
MITSUBISHI RAYON CO., LTD. |
发明人 |
SATO, FUMIO;SHIMOMURA, YASUNORI;KISHIMURA, MASAAKI |
分类号 |
C08K5/101;(IPC1-7):G03C1/00 |
主分类号 |
C08K5/101 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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