| abstract |
PURPOSE: To obtain the title powder excellent in redispersibility, film properties, etc., by emulsion-(co)polymerizing an acrylic monomer in the presence of a water-sol. protective colloid and a specified amt. of a chain transfer agent. n CONSTITUTION: An acrylic monomer (e.g. methyl methacrylate) is emulsion- polymerized, if necessary with 30wt.% or lower copolymerizable monomer (e.g. styrene), in the presence of a water-sol. protective colloid (e.g. polyvinyl alcohol) and 0.1-50wt.% (based on the acrylic monomer) chain transfer agent (e.g. trichloroethylene) to give an acrylic resin emulsion, which is spray-dried, thus giving the title powder. The powder is useful for an adhesive, a coating binder, a cement additive, etc. n COPYRIGHT: (C)1992,JPO&Japio |