Batch:-
The final quantity of any type of coating material produced in a single series of manufacturing operations.

Baking:-
The process of drying and hardening a coatings material by the application of heat, usually in some form of oven. See - Stoving.

Binder:-
The component of a coating material that binds the pigment particles (if present) together, and after drying and/or curing, produces a coherent and adherent film E.g. Resins emulsions.

Biocide:-
A chemical agent capable of killing organisms

Bittiness.-
Dirt on surface. Caused by dirt in paint. Poor air cleaning. Dirt in gun. Dirty working conditions. Compressor not blown down

Bitumen;-
Term for natural and synthetic hydrocarbon resins such as asphalt tars and pitches. They show excellent weather and chemical resistance properties.

Blistering:-
Swollen areas. Can be caused by oil or grease under film, water in spray line or trapped solvent during spraying or transmission of moisture through film. See Paint defects' in 'Helpline' for more information.

Blushing:-
White milky appearance or haziness in film caused by the condensation of water on the surface. See 'Paint defects' in 'Helpline' for more information.

Bloom:-
Generally caused by wrong balance in thinners of diluent/solvents. See Haze, blushing.

Boiling point:-
Temperature at which the vapour pressure of a liquid is just above the total pressure of its surroundings. At this stage, the liquid is rapidly converted into the vapour state.

Boot-topping Paint:-
A particular type of marine paint used to accord protection to that part of a ship's hull at the "wind and water" line.