Inorganic pigment treated with phms/pdms copolymer
AssigneeTronox LLC
InventorsVenkata Rama Rao Goparaju, Vahid Kazerooni, Keven Stone
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Abstract
A process for producing a treated, inorganic pigment is provided. The process comprises providing a plurality of inorganic pigment particles, and depositing an organic treating agent on the surfaces of the pigment particles to form at least one coating of the organic treating agent thereon. The organic treating agent is selected from the group consisting of a copolymer of polyhydromethylsiloxane (PHMS) and polydimethylsiloxane (PDMS) (a “PHMS/PDMS copolymer”), and a combination of a PHMS/PDMS copolymer and a neat PHMS polymer. A treated, inorganic pigment is also provided.
Claims27
A process for producing a treated, inorganic pigment, comprising:
- providing a plurality of inorganic pigment particles;
- and
- depositing an organic treating agent on the surfaces of said pigment particles to form at least one coating of said organic treating agent thereon, wherein said organic treating agent is selected from the group consisting of PHMS/PDMS copolymer, and a combination of a PHMS/PDMS copolymer and a neat PHMS polymer.
A process for producing a treated, titanium dioxide pigment, comprising:
- providing a plurality of titanium dioxide pigment particles;
- depositing an inorganic treating agent on the surfaces of said titanium dioxide pigment particles to form a coating of said organic treating agent thereon;
- depositing an organic treating agent on top of said coating of said inorganic treating agent to form at least one coating of said organic treating agent thereon, wherein said organic treating agent is selected from the group consisting of a PHMS/PDMS copolymer, and a combination of a PHMS/PDMS copolymer and a neat PHMS polymer.
A treated, inorganic pigment, comprising:
- a plurality of inorganic pigment particles;
- and
- an organic treating agent deposited on the surfaces of said inorganic pigment particles and forming at least one coating of said organic treating agent thereon, wherein said organic treating agent is selected from the group consisting of a PHMS/PDMS copolymer, and a combination of a PHMS/PDMS copolymer and a neat PHMS polymer.
Dependencies are inferred from the claim text.