| 摘要 |
Disclosed are aqueous polyacrylate dispersions of acrylic or methacrylic polymers, having improved rheological and stability characteristics, prepared by the aqueous polymerization of acrylic esters, methacrylic esters or their mixtures in the presence of a from about 0.05 to about 5% of a non-surface active protective colloid and a free-radical polymerization initiators that comprises a combination of from about 0.01 to about 1% of an azo initiator or an organo-soluble, water-insoluble peroxide initiator and between 0.01% to about 0.05% of a water-soluble peroxide initiator, by weight of total monomer content. The resultant aqueous polyacrylate dispersions have a particle size less than about 1000 nm and are useful in the manufacture of latex paints, binders for nonwoven materials, water-based inks, paper coatings and water-borne adhesives, such as pressure-sensitive adhesives. |
