Mechanical surface resistance of a coating.
Additive used to improve scratch-, anti-grafitti,
and metal marking resistance of coatings.
Highly viscous, heavy-bodied coating.
Surface with minimal reflection. Mat is the opposite of
Reduction of the gloss of a coating at a given angle due to the effect of
diffuse light scattering by the coating surface. Matting is affected by the
surface topography, pigmentation, and specific matting
Additive used to reduce the gloss.
Examples of matting agents: precipitated silica,
fumed silica... .
Method of applying atomized molten metal such as zinc and aluminum to a surface.
Pigment consisting of thin opaque aluminum flakes (made by ball milling either a disintegrated
aluminum foil or a rough metal powder and then polishing to obtain a flat, brilliant surface on
each particle) or copper alloy flakes (known as bronze pigments). Produces
silvery and other metal-like effects.
Ability of coating surfaces to resist to marking by metal. Depends on the hardness, the
pigmentation, the coefficient of friction, and the topography of the coating.
Aggregates of surfactant molecules with hydrophobic and hydrophilic ends in solution. Such aggregates
form spontaneously at or above a surfactant concentration called the critical
Stabilized emulsion in which the dispersed droplets are extremely small.
Diffusion of some non-volatile low molecular weight coating additives to coating
interfaces during the time of their exploitation, that may affect adhesion
durability (including interlayer adhesion), cause corrosion and blistering,
degradation of various surface properties, staining etc...
Mix of pigments and additives (such as wetting and dispersing agents, defoamers...)
prepared for treatment in grinding equipment.
film forming temperature (MFFT)
Temperature below which the effective coalescence of emulsion particles
in a latex paint cannot occur. Defects, such as poor water resistance, high
permeability, color and gloss variations, poor washability, etc., can result
in latex paints cured below the MFFT.
See Glass Transition Temperature.
Additive used in PU systems, zinc rich paints and other water-sensitive
compositions to remove the residual water. This residual water can cause a reduction in binder
reactivity and coating defects.
Low molecular weight molecules capable of combining with a number of like or unlike
molecules to form a polymer.
Colored spots or blotches on the coating film.