| 摘要 |
PURPOSE:A light, inexpensive, and flame-retardant disc material having low warpage and water vapor permeation, suitable for long-term storage, obtained by copolymerizing a monomer with a monomer shown by a specific formula as one component. CONSTITUTION:A monomer shown by the formulaI(R is H or alkyl; X is Br or I; n+m is 0-12) is blended with a copolymerizable monomer (e.g., styrene, methyl methacrylate, etc.), and cured under heating, to give the desired copolymer (disc.). USE:A digital audio disc, video disc, memory disc, etc. |
