Abstract: Reaction mixtures for forming curable epoxy resin compositions comprise an epoxy resin, a monoethylenically unsaturated monomer capable of forming polyacrylate rubber, a chain transfer agent to allow for higher levels of rubber in the curable epoxy resin without undesired viscosity increase and/or gellation, and a monomer soluble initiator. Optional ingredients include a crosslinking agent for the rubber-forming monomer, a grafting agent for rubber and epoxy resin, and an epoxy curing agent, preferably having activation conditions which are not satisfied when the initiator is activated. Heating the reaction mixture gives epoxy resin compositions containing polyacrylate rubber, the latter being optionally crosslinked and/or grafted to the epoxy resin. Activation of the curing agent, e.g., by heating, when such curing agent is present, yields cured adhesive compositions.

Abstract: Polymer product, such as a polyester resin, is recovered in finely divided form from a polymer product/solvent solution by the addition of the solution to a hot, non-boiling water phase with non-shearing agitation of resulting composition of the water, polymer product, and solvent under conditions which give rise to turbulence in the composition. The solvent, which has a lower boiling point than the temperature at which the hot water is maintained, boils off from the polymer product, solvent, and water composition and leaves the desired, finely divided, polymer product admixed in the water phase. The product can be recovered by filtration or other suitable separation technique.