| 摘要 |
Composite acrylic resin particles prepared by effecting an emulsion polymerization of a monomer mixture of (A) at least one crosslinking monomer having in its molecule two or more radically polymerizable mono- or 1,1-di-substituted ethylenic unsaturation bonds, or a combination of at least two monomers each having a mutually reactive functional group and one or more radically polymerizable mono- or 1,1-di-substituted ethylenic unsaturation bonds. (B) at least one mono-functional polymerizable monomer other than aromatic compound, and (C) at least one monomer having in its molecule one or more radically polymerizable mono- or 1,1-di-substituted ethylenic unsaturation bonds and one or more radically polymerizable 1,2-di-, 1,1,2-tri-1,1,2,2-tetra-substituted ethylenic unsaturation bonds, and graft-polymerizing thus obtained particles with a polymerizable aromatic compound and other optional mono-functional monomers. The present-acrylic resin particles are characterized in that a number of substantially linear acrylic polymer chains are chemically bonded to the particulate crosslinked acrylic polymer. The composite acrylic resin particles are capable of being used either alone or in combination with other soluble resins customarily used in paint industries, to give excellent coating compositions with good application characteristics and storage stability and capable of resulting in a uniform coating with excellent film appearance. |
