Patent ID: 7528220

Claim:
A cyanate ester compound represented by the formula (1), wherein Ar 2 represents a phenylene group, a naphthylene group or a biphenylene group, Ar 1 represents a naphthylene group or a biphenylene group when Ar 2 is a phenylene group, or Ar 1 represents a phenylene group, a naphthylene group or a biphenylene group when Ar 2 is a naphthylene group or a biphenylene group, R x represents all substituents of Ar 1 , each R x is the same or different and represents hydrogen, an alkyl group or an aryl group, R y represents all substituents of Ar 2 , each R y is the same or different and represents hydrogen, an alkyl group or an aryl group, and n is an integer of 1 to 50.