Stir-in titanium dioxide pigment composition

A method of forming a stir-in titanium dioxide pigment composition in dry form for use in a waterborne latex paint formulation, comprising:

• providing a plurality of titanium dioxide particles;
• providing a dispersant package, said dispersant package including:
• at least one non-volatile neutralizing agent selected from the group consisting of organic compounds having at least one amine functional group and at least one hydroxy functional group, inorganic alkali salts, and combinations thereof;
• at least one dispersant component selected from the group consisting of low molecular weight monomeric dispersants, polymeric dispersants, and combinations thereof;
• and
• at least one polyhydric alcohol component;
• depositing said dispersant package on the surfaces of said titanium dioxide particles in an amount of no greater than about 5% by weight based on the combined weight of said titanium dioxide particles and said dispersant package;
• and
• after depositing said dispersant package on the surfaces of said titanium dioxide particles, drying said titanium dioxide particles to form a stir-in titanium dioxide pigment composition in dry form.

A method of forming a stir-in titanium dioxide pigment composition slurry for use in a waterborne latex paint formulation, comprising:

• providing an aqueous medium;
• providing a plurality of titanium dioxide particles;
• providing a dispersant package, said dispersant package including:
• at least one non-volatile neutralizing agent selected from the group consisting of organic compounds having at least one amine functional group and at least one hydroxy functional group, inorganic alkali salts, and combinations thereof;
• at least one dispersant component selected from the group consisting of low molecular weight monomeric dispersants, polymeric dispersants, and combinations thereof;
• and
• at least one polyhydric alcohol component;
• and
• depositing said dispersant package on the surfaces of said titanium dioxide particles in an amount of no greater than about 5% by weight based on the combined weight of said titanium dioxide particles and said dispersant package to form a titanium dioxide pigment composition;
• and
• dispersing said titanium dioxide pigment composition in said aqueous medium to form a stir-in titanium dioxide pigment composition slurry, wherein prior to being dispersed in said aqueous medium, said titanium dioxide pigment composition is in dry form.

A stir-in titanium dioxide pigment composition for use in a waterborne latex paint formulation, comprising:

• a plurality of titanium dioxide particles, wherein said titanium dioxide particles are formed by the chloride process;
• and
• a dispersant package deposited on the surfaces of said titanium dioxide particles in an amount of no greater than about 5% by weight based on the combined weight of said titanium dioxide particles and said dispersant package, said dispersant package including:
• at least one non-volatile neutralizing agent selected from the group consisting of organic compounds having at least one amine functional group and at least one hydroxy functional group, inorganic alkali salts, and combinations thereof;
• at least one dispersant component selected from the group consisting of low molecular weight monomeric dispersants, polymeric dispersants, and combinations thereof;
• and
• at least one polyhydric alcohol component, wherein said titanium dioxide pigment composition is in dry form.

A stir-in titanium dioxide pigment composition for use in a waterborne latex paint formulation, comprising:

• a plurality of titanium dioxide particles;
• and
• a dispersant package deposited on the surfaces of said titanium dioxide particles in an amount of no greater than about 5% by weight based on the combined weight of said titanium dioxide particles and said dispersant package, said dispersant package including:
• at least one non-volatile neutralizing agent selected from the group consisting of organic compounds having at least one amine functional group and at least one hydroxy functional group, inorganic alkali salts, and combinations thereof, wherein said inorganic alkali salts are selected from the group consisting of alkali metal carbonates, alkali metal bicarbonates, and combinations thereof;
• at least one dispersant component selected from the group consisting of low molecular weight monomeric dispersants, polymeric dispersants, and combinations thereof;
• and
• at least one polyhydric alcohol component, wherein said titanium dioxide pigment composition is in dry form.

A stir-in titanium dioxide pigment composition for use in a waterborne latex paint formulation, comprising:

• a plurality of titanium dioxide particles;
• and
• a dispersant package deposited on the surfaces of said titanium dioxide particles in an amount of no greater than about 5% by weight based on the combined weight of said titanium dioxide particles and said dispersant package, said dispersant package including:
• at least one non-volatile neutralizing agent selected from the group consisting of organic compounds having at least one amine functional group and at least one hydroxy functional group, inorganic alkali salts, and combinations thereof;
• at least one dispersant component selected from the group consisting of low molecular weight monomeric dispersants, polymeric dispersants, and combinations thereof, wherein said polymeric dispersants are selected from the group consisting of polyacrylic acid, polyacrylic acid copolymers, salts of polyacrylic acid and polyacrylic acid copolymers, maleic acid copolymers, salts of maleic acid copolymers, and combinations thereof;
• and
• at least one polyhydric alcohol component, wherein said titanium dioxide pigment composition is in dry form.

A method of forming a stir-in titanium dioxide pigment composition slurry for use in a waterborne latex paint formulation, comprising:

• providing an aqueous medium;
• providing a plurality of titanium dioxide particles, wherein said titanium dioxide particles are raw titanium dioxide particles;
• providing a dispersant package, said dispersant package including:
• at least one non-volatile neutralizing agent selected from the group consisting of organic compounds having at least one amine functional group and at least one hydroxy functional group, inorganic alkali salts, and combinations thereof;
• at least one dispersant component selected from the group consisting of low molecular weight monomeric dispersants, polymeric dispersants, and combinations thereof;
• and
• at least one polyhydric alcohol component;
• grinding said titanium dioxide particles to a desired particle size and filtering and washing said ground titanium dioxide particles to form a wet pigment filter cake;
• depositing said dispersant package on the surfaces of said titanium dioxide particles by mixing the dispersant package with said wet pigment filter cake, wherein said dispersant package is deposited on the surfaces of said titanium dioxide particles in an amount of no greater than about 5% by weight based on the combined weight of said titanium dioxide particles and said dispersant package to form a titanium dioxide pigment composition;
• and
• dispersing said titanium dioxide pigment composition in said aqueous medium to form a stir-in titanium dioxide pigment composition slurry, wherein prior to being dispersed in said aqueous medium, said titanium dioxide pigment composition is in dry form.