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US 10,301,489 B2Granted
Comb polyurethane dispersants
AssigneeHuntsman Petrochemical Corporation
InventorsHoward P. Klein, Frank Bertens, Petra Vanderstraeten, Jolande Celis
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Abstract
Embodiments described herein provide a dispersant for ink and pigmented coatings. The dispersant is a polyurethane having oxamide diol groups. The dispersant may be used to prepare a wide variety of inks and coatings having high pigment loading and existing within a conventionally-useful viscosity range.
Claims9
A dispersant, comprising a polyurethane having a structure:
- wherein
- and y is 5% to 95% of a sum of y and z, and z is 5% to 95% of the sum of y and z, and wherein R′ is an aromatic, aliphatic or cycloaliphatic group.
A dispersant, comprising a polyurethane formed by reacting a diisocyanate and an oxamide diol, wherein the polyurethane has a structure:
- wherein
- and y is 5% to 95% of a sum of y and z, and z is 5% to 95% of the sum of y and z, and wherein R′ is an aromatic, aliphatic or cycloaliphatic group.
A composition, comprising:
- a pigment component;
- and
- a dispersant including a polyurethane having a structure:
- wherein
- and y is 5% to 95% of a sum of y and z, and z is 5% to 95% of the sum of y and z, and wherein R′ is an aromatic, aliphatic or cycloaliphatic group.
2 more elements
Dependencies are inferred from the claim text.