Abstract: The present invention provides a resin composition containing a polyester resin processing, within its molecular structure, a structural unit represented by the following formula (I), and an amino resin: ##STR1## [wherein, R.sup.1 and R.sup.2 are the same or different and each represents a hydrogen atom or lower alkyl, with the proviso that R.sup.1 and R.sup.2 do not simultaneously represent hydrogen atoms]. In addition, the present invention provides a cured resin obtained by means of hardening said resin composition, and a paint containing said resin composition. The aforementioned resin composition provides a cured material that exhibits excellent resistance to hydrolysis, resistance to alkali, and resistance to cissing, and thus is suitable for a paint and the like.

Abstract: A process for improving the production of polymethyl methacrylate beads or copolymeric methyl methacrylate and vinyl beads wherein the monomer is polymerized in the presence of a foaming agent and foaming agent stabilizer and within an atmosphere of inert gas, such as nitrogen, at a pressure of at least 4 kg/cm.sup.2.G. The polymerizatin is pressurized after the reaction has proceeded to a conversion ratio of from 30 to 70%. The process essentially eliminates aggregation and "sticking together" of the beads produced thereby.