Structured-particle latexes

摘要

Structured-particle latexes are prepared from nonionic or slightly cationic latexes, either preformed or polymerized in situ, by emulsion polymerizing monomeric materials which include an ethylenically unsaturated, activated-halogen monomer such as vinylbenzyl chloride in the absence of a sufficient amount of a surfactant to initiate new particles whereby the activated-halogen monomer is copolymerized on the surface of the existing particles which are dispersed in aqueous media. To the resulting structured particle latex may then be added conventional cationic surfactants to provide greater stability. The cationic latexes are suitable for coatings.