Prepolymerized resin, preparation method thereof, resin composition comprising the same, and article made therefrom

A prepolymerized resin prepared by subjecting a composition to a pre-reaction in the presence of a polymerization inhibitor, the composition at least comprising bis(vinylphenyl)ethane, polybutadiene and vinyl-containing polyphenylene ether, wherein the polybutadiene has a 1,2-vinyl content of 85% or above and a number average molecular weight of less than 2000, wherein the pre-reaction has a conversion rate of between 30% and 90%, and wherein, during the pre-reaction, components in the composition are partially crosslinked to leave residual vinyl groups;

• wherein the bis(vinylphenyl)ethane and the polybutadiene are pre-reacted at a molar ratio of 2:1 to 1:2;
• wherein the polymerization inhibitor comprises hydroquinone or 2,2′-methylenebis(4-ethyl-6-t-butylphenol);
• and
• wherein the polymerization inhibitor is 0.001 to 0.1 mole relative to a total of 1 mole of the bis(vinylphenyl)ethane and the polybutadiene.