A method of preparing polymer particles having narrow size distribution in a suspension process employing a solid colloidal stabilizing agent. The solid colloidal stabilizer is a copolymer of about 25 to about 80% by weight, based on total monomer weight, of an addition polymerizable nonionic oleophilic...http://www.google.es/patents/US5133992?utm_source=gb-gplus-sharePatente US5133992 - Colloidally stabilized suspension process