PURPOSE: To improve flowability in molding, curing characteristics, and bending strength by compounding a polymaleimide, a specific allylphenol compd., a polyaminosiloxane, silica, and an organoalkoxysilane compd.
CONSTITUTION: 100 pts.wt. polymaleimide having at least two maleimide groups in the molecule is compounded with an allylphenol compd. having at least two allyl groups in the molecule in an amt. of the allyl group of 0.5-1.5 equivalents based on 1 equivalent of the maleimide group in the polymaleimide, 10-50 pts.wt. polyaminosiloxane of the formula [wherein R1 is CH3, C6H5, or R4NH2 (wherein R4 is alkylene); R2 is R5NH2, R6NHR6NH2, CH3, or C6H5 (wherein R5 and R6 are each R4) provided at least either R1 or R2 is amino; R3 is CH3 or C6H5; (m) is 1 or higher; and (n) is 0 or higher], 20-95vol% silica having a mean particle diameter of 0.01-150μm, and an aminated organoalkoxysilane compd.
SUZUKI OSAMU
YAMAMOTO MASAKI
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