Preparation of amino terminated polyacrylics
AssigneeLexmark International, Inc.
InventorsBradley L. Beach, Anna M. Pearson, Jing X. Sun
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Abstract
Amino terminated polyacrylic acids and polyacrylic acrylates are prepared by free radical polymerization of the acid or acrylate monomers with t-Boc-aminoethanethiol as a chain transfer control agent followed by acid removal of the t-Boc group. The acids and their acrylates are precursors to form dispersants and to modify dyes.
Claims4
The method of preparing amino-terminated polyacrylate comprising free radical polymerizing an acrylic acrylate in a nonpolar solvent in the presence of t-Boc-aminoethanethiol as a chain transfer control agent and then removing said t-Boc group by acidifying the product of said polymerizing.
The method of preparing amino-terminated polyacrylic acid comprising free radical polymerizing an acrylic acrylate in a nonpolar solvent in the presence of t-Boc-aminoethanethiol as a chain transfer control agent and then removing said t-Boc group and the ester moiety of said acrylate by acidifying the product of said polymerizing.
Dependencies are inferred from the claim text.