Pigment dispersions containing aminated acrylic macromonomer dispersant
AssigneeE.I. du Pont de Nemours and Company
InventorsSteven Dale Ittel, Karyn B. Visscher, Alexei A. Gridnev
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Abstract
A pigment dispersion useful for forming coating compositions containing dispersed pigment, a carrier solvent and an aminated macromonomer dispersant (binder) is disclosed. The aminated macromonomer dispersant is preferably prepared by the reaction of terminally unsaturated macromonomers synthesized by cobalt-catalyzed chain transfer free radical polymerizations of methacrylic monomers with monomeric or oligomeric amines.
Claims12
A pigment dispersion composition useful for forming coating compositions comprising a dispersed pigment, a liquid carrier and an aminated macromonomer dispersant;
- wherein:
- the aminated macromonomer dispersant comprises the structure
- wherein each R1 and R2 are independently H, alkyl of 1-20 carbon atoms, aryl, substituted alkyl of 1-20 carbon atoms, or substituted aryl;
- R3 and R4 are independently H, alkyl of 1-100 carbon atoms, or substituted alkyl of 1-100 non-hydrogen atoms or R3 is a polymer;
- R5 is methyl, hydrogen or hydroxymethyl;
- n=1-100;
- m=1-100 or m+m′=2-100 and is equal to or less than the number of reactive amino groups on R3, and;
- R6 are independently —CN, —CO2R1, —COR1, or —CON1R1R1;
- wherein said substituted alkyl of 1-20 carbon atoms and said substituted alkyl of 1-100 non-hydrogen atoms are substituted alkyls having the same or different substituents selected from the group consisting of carboxylic ester, hydroxyl, alkoxy, amino, trifluoromethyl, perfluoroalkyl, alkyl, aryl, and halogen, or substituted alkyls having one or more carbon atoms other than the first carbon atom substituted with heteroatoms selected from the group consisting of oxygen, sulfur, silicon, and tin, wherein substituents in said substituted aryl are the same or different and are selected from the group consisting of carboxylic ester, hydroxyl, alkoxy, amino, secondary amino, tertiary amino, trifluoromethyl, perfluoroalkyl, alkyl, aryl, and halogen.
Dependencies are inferred from the claim text.