Resin composition and article made therefrom

A resin composition, comprising:

• a vinyl group-containing resin;
• and
• a phosphorus-containing compound of Formula (1) or a prepolymer thereof;
• wherein:
• relative to 100 parts by weight of the vinyl group-containing resin, the phosphorus-containing compound of Formula (1) is 35 to 60 parts by weight;
• or relative to 100 parts by weight of the vinyl group-containing resin, the prepolymer of the phosphorus-containing compound of Formula (1) is 50 to 90 parts by weight;
• wherein R1 each independently represent any divalent functional group of Formula (a) to Formula (d):
• wherein p and q are each independently a positive integer, and p+q is between 2 and 11;
• R2 each independently represent any monovalent functional group of Formula (e) to Formula (f):
• R3 represents a phenyl group;
• and
• n represents a repeating number of unit in the brackets by which the phosphorus-containing compound of Formula (1) has a weight average molecular weight of between 500 and 10,000.