The present invention relates to a process for preparing a vinylidene chloride polymer composite comprising a vinylidene chloride polymer and clay materials. The process comprises polymerising vinylidene chloride and clay materials and the resulting vinylidene chloride polymer particle is surrounded by a plurality of clay platelets. The clay materials according to the present invention function as a solid stabilizer in the process for preparing a vinylidene chloride polymer composite of the present invention. The present invention further relates to the vinylidene chloride polymer composite obtainable from the process, to use of the vinylidene chloride polymer composite for the preparation of films, and to films prepared therefrom.

A method of preparing a polymer dispersion comprising (i) contacting an aqueous dispersion of de-ionized acidic colloidal silica particles with a first mixture of monomers to form a combination; (ii) polymerizing such combination at an initial pH of from 2 to 5 to at least 90% in completion; and (iii) adding a second mixture of monomers at a rate substantially equal to the rate of consumption of such second mixture of monomers to continue and complete the polymerization. The present invention further provides a polymer dispersion made from the above method.

A method of preparing a polymer dispersion comprising (i) contacting an aqueous dispersion of de-ionized acidic colloidal silica particles with a first mixture of monomers to form a combination; (ii) polymerizing such combination at an initial pH of from 2 to 5 to at least 90% in completion; and (iii) adding a second mixture of monomers at a rate substantially equal to the rate of consumption of such second mixture of monomers to continue and complete the polymerization. The present invention further provides a polymer dispersion made from the above method.

Provided is a heat-dissipating coating composition having capability of forming a coating film having a high heat-dissipating effect, and having capability of forming the coating film also excellent in heat resistance and UV resistance. The heat-dissipating coating composition of the present application contains a filler of an orthorhombic silicate mineral; and an acrylic resin and a curing agent. Either the acrylic resin or the curing agent is silicone-modified.

A method of preparing a polymer dispersion comprising (i) contacting an aqueous dispersion of de-ionized acidic colloidal silica particles with a first mixture of monomers to form a combination; (ii) polymerizing such combination at an initial pH of from 2 to 5 to at least 90% in completion; and (iii) adding a second mixture of monomers at a rate substantially equal to the rate of consumption of such second mixture of monomers to continue and complete the polymerization. The present invention further provides a polymer dispersion made from the above method.

Glass flakes according to the present invention include: glass flake substrates; and a coating covering at least a portion of a surface of each of the glass flake substrates and composed of a binder. The binder includes a bismaleimide compound, a resin, and a silane coupling agent as essential components and includes a peroxide as an optional component. The proportion of the peroxide in the binder is 8 mass % or less.

Glass flakes according to the present invention include: glass flake substrates; and a coating covering at least a portion of a surface of each of the glass flake substrates and composed of a binder. The binder includes a bismaleimide compound, a resin, and a silane coupling agent as essential components and includes a peroxide as an optional component. The proportion of the peroxide in the binder is 8 mass % or less.

The present invention provides an aqueous paint composition comprising by dry weight based on total dry weight of the pigment composition, from 11% to 35% of a polymeric duller of (co)polymeric particles having an average diameter of from 1 to 20 m, and from 25% to 70% of titanium dioxide particles; wherein from 50% to 100% of the titanium dioxide particles are encapsulated by polymer shell of (co)polymeric particles.

Provided are hybrid sol-gel coating materials and method of synthesizing such materials. Also, provided are methods of forming hybrid sol-gel coatings from such coating materials. In some embodiments, a hybrid sol-gel coating material includes a hydrolyzed inorganic component and organic component. Functional groups of the inorganic component may react with each other in a sol-gel condensation reaction, while functional groups of the organic component may be subjected to free-radical induced polymerization thereby bonding the inorganic and organic components in a resulting hybrid organic-inorganic sol-gel coating. The coating material may also comprise nanoparticles, which may be bonded to other components in a resulting coating. The inorganic component may be a silane or, more specifically, tetraethoxysilane, while the organic component may be an acrylate or, more specifically, mercapto functionalized polyester acrylate, aromatic epoxy acrylate, and/or polyurethane acrylate. The hybrid sol-gel coating material may also include a coupling agent, catalyst, and/or diluent.

Provided are hybrid sol-gel coating materials and method of synthesizing such materials. Also, provided are methods of forming hybrid sol-gel coatings from such coating materials. In some embodiments, a hybrid sol-gel coating material includes a hydrolyzed inorganic component and organic component. Functional groups of the inorganic component may react with each other in a sol-gel condensation reaction, while functional groups of the organic component may be subjected to free-radical induced polymerization thereby bonding the inorganic and organic components in a resulting hybrid organic-inorganic sol-gel coating. The coating material may also comprise nanoparticles, which may be bonded to other components in a resulting coating. The inorganic component may be a silane or, more specifically, tetraethoxysilane, while the organic component may be an acrylate or, more specifically, mercapto functionalized polyester acrylate, aromatic epoxy acrylate, and/or polyurethane acrylate. The hybrid sol-gel coating material may also include a coupling agent, catalyst, and/or diluent.