| 摘要 |
PURPOSE:The titled composition having a low dielectric constant, a small coefficient of linear expansion and excellent heat resistance, comprising a specified bis(cyclopentadienyl) compound and a polymaleimide. CONSTITUTION:20-80wt% bis(cyclopentadienyl) compound of formula I (wherein X is a halogen, n is 0-4 and a is 0-20), e.g., alpha,alpha'-bis(cyclopentadienyl)-2,3,5,6- tetarchloro-p-xylene oligomer, is mixed with a polymaleimide of formula II (wherein R1 is a b-valent 2C or higher organic group and b is 2-10), e.g., N,N'- p,p'-diphenylmethanebismaleimide, at a temperature <=100 deg.C in the absence or presence of a solvent (e.g., chloroform), and when a solvent is used, it is recovered by application of vacuum or heat to obtain the titled uniform composition.
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