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Application Guide - General Information

Glossary of Terms (D-I)


Dew Point: The temperature at which water vapor condenses from the air; the dew point varies with relative humidity.

Distinction of Image (DOI): The quality of the reflection in a high–gloss finish. The mirror effect of the finish.

Dry Film Thickness (DFT): The film thickness of paint after all the solvent has evaporated from the wet paint.

Dry Spray: Sprayed paint which loses so much solvent in the air that it becomes too dry to flow out over the surface; dry spray usually has a lower gloss than the properly sprayed surface.

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Drying Time: Time interval between application and final cure.

Dry to Handle: Time interval between application and ability to handle without damage.

Dry to Recoat: Time interval between application and ability to receive next coat satisfactorily.

Dry to Touch: Time interval between application and tack-­free time.



  1. A paint which forms a film by chemical union of its component molecules during cure;

  2. In shop terminology, any paint which is not a lacquer.

Epoxy: Type of paint, adhesive or plastic noted for high mechanical strength, good adhesion and resistance to solvents, acids, alkalis and corrosion. Epoxies do not weather well.


Fairing Compound: Filler putty used to fill surface depressions and shape forms until they are fair or smooth.

Filler Primer: Heavy paint applied to fill holes or other irregularities in a surface prior to topcoating.

Film Build: Dry film thickness characteristics per coat.

Film Thickness Gauge: Device for measuring film thickness above substrate; dry or wet film thickness gauges are available.

Flash Point: The lowest temperature at which a given flammable material will flash if a flame or spark is present.

Fluid Needle: The stop/start valve for fluid flow through the fluid tip.

Fluid Tip: Orifice in a spray gun into which a fluid needle is seated. The paint exits the spray gun at the fluid tip.


Hiding Power: The ability of a paint to mask the color or pattern of a surface.

High Solids Paint: Coatings that comply with regulations limiting the amount of volatile (organic solvents) materials in their composition. High solids coatings are generally more than 50% solids by volume. Awlgrip HS and 321 HS Undercoat are high solids coatings.


Incompatibility: Inability to mix with, or adhere to, another material.

Induction: The time period required for the mixed base and converter components to cross-­link chemically. Products requiring induction periods before application will not perform as designed without this waiting period.

Intercoat Adhesion: The ability of each coat of paint to stick to the preceding coat.

Isocyanate Resins: Resins characterized by NCO grouping. Isocyanate resins are used in polyurethane converters. Awlcat #2 and Awlcat #3 contain isocyanate resin.