| abstract |
The present invention provides a resin composition comprising: (a) a resin system having a dielectric loss factor (Df) of less than 0.008 at a frequency of 10 GHz after curing, and the resin system (a) comprising a thermosetting resin component and Vinyl-containing elastomer; and (b) a phosphorus-containing flame retardant, which is a compound of formula (I), a compound of formula (II), or a combination thereof: n n n n n n n n n n Wherein, R 1 , R 2 , R 21 , R 22 , R 23 , R 24 and n are as defined herein. |