| 摘要 |
PURPOSE:To manufacture a carrier with a process of an injection molding, by using a copolymer composed of 97-20wt% methyl methacrylate and 3-80wt% vinyl monomer that can be copolymerized with the said methacrylate for the disk base material of optical system or electrostatic capacity system. CONSTITUTION:The vinyl monomer which can be copolymerized with methyl methacrylate includes the aromatic vinyl monomer, unsaturated nitrile monomer, methacrylic alkyl ester, acrylic alkyl ester, etc. These monomers can be used independently or in the form of a mixture, and methyl-methacrylate-styrene copolymer is preferably used. |
