Abstract: A curable polymer comprising one or more type(s) of structural units (UX) represented by the following formula and one or more type(s) of other structural units other than the structural units (UX) and a curable polymer comprising only one or more type(s) of structural units (UX) represented by the following formula as structural units, and which is for production of a prepreg, a metal clad laminate or a wiring board. in which R1 and R2 each independently represent a hydrogen atom, a hydroxyl group or an organic group; the benzene ring optionally has a substituent other than the substituent in the above formula; and n is an integer of 0 or more.

Abstract: A curable polymer containing one or more type(s) of structural units (UX) represented by the following formula and which is for production of a prepreg, a metal clad laminate or a wiring board: in which X is a single bond or an oxygen atom; the benzene ring optionally has a substituent other than the substituent in the above formula; and n is an integer of 0 or more.

Abstract: An organosilicon compound is represented by the following formula (1TQ): in which M is a single bond or an optionally substituted alkylene group having 1 to 20 carbon atoms; the benzene ring optionally has a substituent; the vinyl group is attached to the benzene ring at any position; n is an integer of 3 or 4; and R is a hydrogen atom, a hydroxy group or an organic group, and an atom attached to Si is C in a case where R is an organic group.