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US 10,370,540 B2Granted
Inorganic pigments surface treated with polyol esters
AssigneeTronox LLC
InventorsVenkata Rama Rao Goparaju, Vahid Kazerooni
Life of this patent
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Abstract
A treated, particulate inorganic pigment is provided. The treated, particulate inorganic pigment comprises a plurality of pigment particles, and a polyol ester deposited on the surfaces of the pigment particles. A method of forming a treated, particulate inorganic pigment and a polymer composition are also provided.
Claims27
A treated, particulate inorganic pigment, comprising:
- a plurality of pigment particles;
- and
- a trimethylolpropane polyester deposited on the surfaces of said pigment particles, wherein said trimethylolpropane polyester is formed by reacting at least one fatty acid with trimethylolpropane, said fatty acid(s) being selected from saturated, straight chain fatty acids and saturated, branched chain fatty acids and functioning to fully esterify said trimethylolpropane to form said trimethylolpropane polyester.
A treated, particulate inorganic pigment, comprising:
- a plurality of titanium dioxide pigment particles;
- and
- a trimethylolpropane polyester deposited on the surfaces of said pigment particles, said trimethylolpropane polyester being formed by reacting at least one hydroxy-free fatty acid with trimethylolpropane, wherein said hydroxy-free fatty acid(s) has from 6 to 24 carbon atoms, is selected from saturated, straight chain fatty acids and saturated, branched chain fatty acids and functions to fully esterify said trimethylolpropane to form said trimethylolpropane polyester.
A method of forming a treated, particulate inorganic pigment, comprising:
- providing a plurality of pigment particles;
- providing a trimethylolpropane polyester, wherein said trimethylolpropane polyester is formed by reacting at least one hydroxy-free fatty acid with trimethylolpropane, said hydroxy-free fatty acid(s) being selected from saturated, straight chain fatty acids and saturated, branched chain fatty acids and functioning to fully esterify the trimethylolpropane to form said trimethylolpropane polyester;
- and
- depositing said trimethylolpropane polyester on the surfaces of said pigment particles.
1 more element
A polymer composition, comprising:
- at least one polymer;
- and
- a treated, particulate inorganic pigment, said pigment including:
- a plurality of pigment particles;
- and
- a polyol ester deposited on the surfaces of said pigment particles, wherein said polyol ester is formed by reacting at least one hydroxy-free fatty acid with a polyhydric alcohol having at least 6 carbon atoms, said hydroxy-free fatty acid(s) being selected from saturated, straight chain fatty acids and saturated, branched chain fatty acids and functioning to fully esterify the polyhydric alcohol to form said polyol ester.
3 more elements
Dependencies are inferred from the claim text.