A disintegrable polymer composite comprises: a polymer component comprising one or more of the following: a cured cyanate ester; a crosslinked unsaturated polyester; or a crosslinked vinyl ester resin; and dissolvable glass comprising about 55 to about 80 wt.% of SiO2, 0 to about 35 wt.% of Na2O, 0 to about 35 wt.% of K2O, 0 to about 20 wt.% of CaO, 0 to about 10 wt.% of MgO, provided that the sum of the weights of Na2O and K2O is about 20 wt.% to about 40 wt.%, wherein each weight percent is based on the total weight of the dissolvable glass.