Resin composition and uses of the same

A resin composition, comprising:

• (a) a resin of the following formula (I);
• (b) triallyl isocyanurate (TAIC) as a first hardener;
• (c) a hardening promoter, which is a metallic salt compound of the following formula (II),
• bismaleimide (BMI), which is a compound of the following formula (III):
• wherein in formula (III), R″ is substituted or unsubstituted methylene, 4,4′-diphenylmethane, m-phenylene, bisphenol A diphenyl ether, 3,3′-dimethyl-5,5′-diethyl-4,4′-diphenyl methane, 4-methyl-1,3-phenylene, or (2,2,4-trimethyl)hexane,
• wherein in formulas (I) and (II),
• R1 and R2 are independently H or substituted or unsubstituted C1-C10 alkyl;
• A1 and A2 are independently
• wherein R6 is —O—, —SO2—, or —C(CH3)2—, and q is an integer, wherein 0<q≤15;
• n is an integer from 5 to 30;
• R3 and R4 are independently C1-C5 alkyl;
• Ma+ is Al3+ or Zn2+;
• and
• b is 2 or 3,
• and wherein, the weight ratio of the resin (a) to the first hardener (b) is about 10:1 to about 1:1, and the amount of the hardening promoter (c) is about 0.1 wt % to less than 15 wt % based on the total weight of the resin (a) and the first hardener (b),
• and wherein, the weight ratio of the resin (a) to the total amount of the first hardener (b) and BMI is not lower than 1:1.