Structured-particle latexes and cationic structured-particle...

Details Structured-particle latexes and cationic structured-particle... Structured-particle latexes and cationic structured-particle...

C - Chemistry, Metallurgy

08

L

400/5166, 400/70

C08L 57/06 (2006.01) C08C 1/06 (2006.01) C08F 291/00 (2006.01) C08L 101/02 (2006.01)

Patent

CA 1061495

ABSTRACT 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 mono- mer is copolymerized on the surface of the existing particles which are dispersed in an aqueous media. The resulting structured-particle latex may then be reacted with a nu- cleophile such as dimethyl sulfide or trimethyl amine to form a latex having stabilizing "onium" groups such as sul- fonium groups or quaternary ammonium groups chemically bound at or near the surface of the polymer particles which are dispersed in aqueous media. The cationic latexes-are suitable for coatings and organic pigments.

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