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Lubrizol Advanced Materials, Inc.

Robert A Jennings

Dean Thetford

Andrew J Shooter

Stuart N Richards

Polymeric dispersants are disclosed that include an acrylic backbone at least one pendantly attached imide group, wherein the carbonyl of the imide are chemically bonded to a fused aromatic ring. The aromatic ring can be substituted with various electron withdrawing or releasing groups. Desirably dispersant also includes solvent-solubilising chains of polyether, polyester, polyacrylate, and or polyolefin.

Acrylic dispersants with fused aromatic imide anchor groups

A polyurethane dispersant is described that comprises a reaction product of a polyisocyanate with a) a component supplying a anchoring imide group wherein the carbonyl groups of the imide are bonded to a fused or non-fused aromatic ring, b) at least one solvent-solubilizing chain, and other optional components to build molecular weight or modify the interaction of the dispersant with various particulates or continuous media.

Dispersants with multiple aromatic imide anchor groups

Polymeric dispersants are disclosed that include a urethane backbone at least one pendantly attached imide group, wherein the carbonyl of the imide are chemically bonded to a single or fused aromatic ring. The aromatic ring can be substituted with various electron withdrawing or releasing groups. The dispersant also includes solvent-solubilizing chains of polyether, polyester, polyacrylate, and or polyolefin Desirably, the imide groups are derived from an imide that has two isocyanate reactive groups such that the imide is attached to the urethane backbone at two separate locations.

The present invention relates to a composition containing a particulate solid, an organic or aqueous medium and a dispersant that may be a reaction product of an organic di or polyepoxide with a primary amine, aminoalcohol, amino acid, hydroxyacid or alcohol containing a fused or non-fused aromatic imide group. The invention further provides compositions for coatings, inks, toners, plastic materials (such as thermoplastics), plasticizers, plastisols, crude grinding and flush.

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Salford, United Kingdom

Robert A Jennings