GLOSSARY 

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I 

IMBEDDING

The application of tape in joint compound as the first step in joint treatment. 

IMMISCIBLE

Not miscible (mixable). A quality of any liquid that will not mix with another specified liquid, in which case it forms two separate layers or exhibits cloudiness or turbidity. 

IMPACT RESISTANCE

A measure of resistance to a blow; ability to resist deformation from impact. 

IMPACT TOOL

A power tool that cleans by striking a surface. 

INCOMPATIBILITY

Inability of a material to mix with another material without compromising its original properties. 

INDUCTION TIME

The time interval that must elapse after mixing the components of a multi-component paint before application can begin. 

INERT

A material that will not react chemically with other ingredients. 

INHIBITIVE PIGMENT

A pigment that when formulated into a coating provides active corrosion inhibition to a metal substrate or inhibits some other undesirable effect. 

INHIBITOR

General term for compounds or materials that slow down or stop an undesired chemical reaction such as oxidation, corrosion, drying, skinning, mildew growth. 

INORGANIC ZINC-RICH COATING

Anti-corrosive primer for iron and steel incorporating zinc dust pigment in an inorganic silicate vehicle. 

IN-PLACE MANAGEMENT

A series of steps used as an alternative to lead-based paint removal. Improves condition of intact lead-based paint to reduce and/or eliminate hazards without total removal. 

INTERCOAT ADHESION

Adhesion between successive coats of paint or a coat of paint and the base substrate. 

INTERCOAT CONTAMINATION

Presence of a contaminant between coats of paint. 

INTERCOAT DISBONDING

Failure of a coating to adhere to a previous coating layer or to the base substrate. 

INTERIOR VARNISH

A clean coating designed specifically for use on interior surfaces. Floor varnishes are characterized by a high resistance to abrasion in order to withstand foot traffic. 

INTERMEDIATE COAT

One of more coats of paint between the primer coat and the finish coat. 

INTRACOAT ADHESION

Cohesion within a coat of paint; the ability of a paint film to hold itself together. 

INTRACOAT DISBONDING

Failure of a coating layer to cohere or hold itself together. 

INTUMESCENT COATING

A fire-retardant coating that, when heated, forms a foam produced by none flammable gases, such as carbon dioxide and ammonia. This results in a thick, highly insulating layer of carbon (about 50 times as thick as the original coating) that serves to protect the coated substrate from fire. 

ISOCYANATE

A compound containing the chemical group -N=C=O. When the iso-cyanate groups are cross-linked with a hydroxyl-containing material (polyol), a urethane polymer is formed.