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AssigneeE. I. Du Pont de Nemours and Company
InventorsHarry J. Spinelli, Henry L. Jakubauskas, Patrick F. McIntyre, James G. King
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A pigment dispersion useful for forming coating compositions containing dispersed pigment, a carrier liquid and an AB-block polymer dispersant (binder); the AB block polymer has a number average molecular weight of about 5,000-20,000 and contains 20-80% by weight of a polymeric A segment and correspondingly 80-20% by weight of a polymeric B segment; wherein the polymeric A segment of the block polymer is of polymerized glycidyl (meth)acrylate monomers reacted with an acid from the group of aromatic carboxylic acids or aliphatic carboxylic acids; and the B segment is of polymerized alkyl (meth)acrylate monomers having 1-12 carbon atoms in the alkyl group, hydroxy alkyl (meth)acrylate monomers having about 1-4 carbon atoms in the alkyl group; and wherein the weight ratio of pigment to binder in the dispersion is about 1/100-200/100.
A coating composition which comprises an organic liquid carrier, a film forming binder and about 1-50% by weight of the pigment dispersion, wherein the pigment dispersion comprises dispersed pigment, a carrier liquid and an AB-block polymer dispersant (binder);
A process for preparing a pigment dispersion which comprises dispersed pigment, a liquid carrier and an AB-block polymer dispersant in which the AB block polymer is formed by the process comprising
Dependencies are inferred from the claim text.