Process for preparing epoxy-acrylic hybrid emulsions

Details Process for preparing epoxy-acrylic hybrid emulsions Process for preparing epoxy-acrylic hybrid emulsions

C - Chemistry, Metallurgy

08

F

C08F 283/10 (2006.01) C08G 59/02 (2006.01) C08L 51/08 (2006.01) C08L 63/02 (2006.01)

Patent

CA 2260475

The present invention relates to a procEas for preparing epoxy-acrylic hybrid emulsions having an polyepoxide content of up to 95% based on the total weight of resin solids in the emulsion. The process involves (I) dissolving a polyepoxide with at least one acrylate monomer in the presence of water and a surfactant to form a mixture; (II) microfluidizing or homogenizing the mixture in a microfluidizer or homogenizer having a chamber pressure of from about 6,000 psi to about 15,000 psi fo form a pre-emulsion; and (III) polymerizing the pre-emulsion in the presence of a free radical polymerization catalyst. The epoxy-acrylic hybrid emulsion can be formulated into solvent-free wood coatings, direct-to-metal coatings and paint.

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