E

Effect additive
Additive which gives a special aspect to coatings such as relief coatings.

Effect pigment
See Special-effect pigments

Effervescence
Effect in the film caused by rapid solvent release. This "boiling" of solvent causes a pinholed or cratered appearance reducing gloss.

Efflorescence
Deterioration of coatings on brick and concrete substrates. Formation of a white powdery deposit of soluble salts of calcium, potassium, and sodium on the coatings top surface.

Elastic
Ability of materials to recover their original size, shape and volume after deformation.

Electron Beam (EB) curing
Curing of a coating initiated by ElectronBeam.
See UV curing

Electrostatic spraying
System of applying a coating in which the coating droplets from an air, air-assisted airless, or airless spray gun are given an electrical surface charge. These electrical charged droplets are attracted to an electrically grounded workpiece.

Emulsifier (extended definition)
Surface-active substance used to facilitate the dispersion of an immiscible liquid compounding material in another liquid and to stabilize the emulsion thereby produced.
Syn. Colloïdal stabilizer, Surfactant

Emulsion
Two-phase liquid system in which small droplets of one liquid are immiscible in and are dispersed uniformly throughout a second continuous liquid phase.

Enamel
Paint which forms an especially glossy smooth film.

Epoxy resin
Synthetic resin characterized by the presence of the epoxy group, derived from petroleum products that can be cured by a catalyst or used to upgrade other synthetic resins to form a harder, more chemically resistant film. This resin possesses high mechanical strength, good adhesion, and resistance to solvents, acids, alkali, and corrosion. It usually does not weather well.

Etching
Treatment of a surface with an acid, a chemical solution or primer in order to dissolve loose particles or provide a profile.

Exempt Solvent
Solvent Which is not subject to air pollution legislation.

Extender
Organic material (white or colorless, low or non-opaque mineral powder) used in decorative and architectural for partial replacement of white pigments with minimal loss of film opacity.
See Filler for industrial paints