Disintegration type resin particles, its preparation and coating composition containing the same

A coating composition comprising disintegration type spherical form crosslinked resin particles uniformly dispersed in a film-forming resin varnish, said particles having an average grain diameter of 0.01 to 250.mu., at least one crosslinking structure carrying a metal ester bond of the formula:

• --X--O).sub.m M--R.sub.1).sub.n
• wherein X represents ##STR20## R.sub.1 is a monovalent, bioactive organic acid residue;
• M stands for a polyvalent metal having a valence of 3 or more;
• m is an integer of 2 or more;
• n is an integer of 1 or more, providing that the sum of m and n is equal to the valence of said metal M, wherein the solid weight ratio of said film-forming resin to said particle resin is 99/1 to 30/70, and wherein the amount of crosslinking structure carrying metal ester bond in the respective particles, when expressed in terms of crosslinking density=number of moles of organic acid involved in said crosslinking structure/total weight (g) of crosslinked resin particles, is 0.00003 to 0.01 mole/g.