Aqueous silica-based nanocomposite polymer dispersion

Details Aqueous silica-based nanocomposite polymer dispersion Aqueous silica-based nanocomposite polymer dispersion

2011-07-26

2011-07-26

Bernshteyn, Michael M (Department: 1762)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C524S444000, C524S495000, C524S493000, C524S420000, C524S789000, C523S205000, C523S333000

Reexamination Certificate

active

07985789

ABSTRACT:
The invention concerns an aqueous specific silica-based nanocomposite polymer dispersion, a method for preparing same, a coating composition, in particular protective, containing said dispersion, for applications requiring high anti-corrosive, anti-abrasive and chemical resistance performances. It concerns an aqueous nanocomposite polymer dispersion obtainable by an emulsion polymerization process of at least one monomer composition in the presence of at least one aqueous silica nanoparticle dispersion, said monomer composition being added at least in one step into the reactor already containing the aqueous silica nanoparticle dispersion, said aqueous silica nanoparticle dispersion having an anionic character and being stable in a pH range between 2 to 10, and said emulsion polymerization being performed in the presence of at least one organic initiator free of any ionic group and in the absence of any monomer or cationic dispersant.

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