Enhanced scratch resistance of articles containing a combination of nano-crystalline metal oxide particles, polymeric dispersing agents, and surface active materials

Abstract

A film forming composition comprises a resin, a plurality of nanoparticles, a surface active material and a polymeric dispersant. The film forming composition is substantially transparent and is adapted to be combined with a substrate to enhance abrasion resistance. The film forming composition may be used with wood objects including furniture, doors, floors, for architectural surfaces, for automotive articles and finishes, for metal coatings and coil coatings, for plastic articles, and for wipe-on protective treatments.

Description

technical field

[0001] The present invention relates to film-forming mixtures, and more particularly, to nanoparticle-based additives for use with film-forming mixtures to enhance scratch resistance. Typical film-forming mixtures include polymer-based coatings applied to substrates to protect them from scratches, but polymer articles manufactured by cold-curing, extrusion, coextrusion, or casting techniques can also benefit from this technique. Typically, these coatings and / or polymeric articles are transparent. Background technique

[0002] The prior art uses two approaches to enhance the scratch resistance of polymeric coatings: (1) using additives to enhance the surface slip of the coating (Method 1), or (2) adding ceramic particles to enhance the hardness of the coating (Method 2 ).

[0003] Method 1 reduces the surface energy of the coating and enhances the surface sliding property by adding additives (such as polysiloxane, wax or fluorine-containing substances) to th...