Ink processes
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United States of America Patent
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Nov 9, 1999
Grant Date -
N/A
app pub date -
Sep 2, 1997
filing date -
Sep 2, 1997
priority date (Note) -
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Abstract
A process comprising (1) polymerizing an organic phase of monomer in the presence of a carboxylic acid, an oil soluble chain transfer agent, and a partially water soluble chain transfer agent; and which polymerizing is accomplished in the presence of (2) an aqueous phase containing a nonionic surfactant, and an anionic surfactant, and wherein there is added to the aqueous phase an aqueous initiator solution of an inorganic persulfate, and wherein the resulting latex contains particles of polymer with carboxylic acid; aggregating said latex particles with colorant; thereafter adding an effective amount of anionic surfactant and heating the mixture resulting about equal to, or about above the polymer Tg resulting from said monomer, or said monomers.
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