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Important
Important Two-Component Material Information
Isocyanate Conditions
Spraying or dispensing materials containing isocya- nates creates potentially harmful mists, vapors, and atomized particulates.
Read material manufacturer’s warnings and material MSDS to know specific hazards and precautions related to isocyanates.
Prevent inhalation of isocyanate mists, vapors, and atomized particulates by providing sufficient ventila- tion in the work area. If sufficient ventilation is not available, a
To prevent contact with isocyanates, appropriate per- sonal protective equipment, including chemically impermeable gloves, boots, aprons, and goggles, is also required for everyone in the work area.
Material Self-ignition
Some materials may become
Keep Components A and B Separate
Moisture Sensitivity of
Isocyanates
Isocyanates (ISO) are catalysts used in two component coatings. ISO will react with moisture (such as humidity) to form small, hard, abrasive crystals, which become suspended in the fluid. Eventually a film will form on the surface and the ISO will begin to gel, increasing in vis- cosity. If used, this partially cured ISO will reduce perfor- mance and the life of all wetted parts.
NOTE: The amount of film formation and rate of crystal- lization varies depending on the blend of ISO, the humidity, and the temperature.
To prevent exposing ISO to moisture:
•Always use a sealed container with a desiccant dryer in the vent, or a nitrogen atmosphere. Never store ISO in an open container.
•Use
•Never use reclaimed solvents, which may contain moisture. Always keep solvent containers closed when not in use.
•Never use solvent on one side if it has been contam- inated from the other side.
•Always lubricate threaded parts with ISO pump oil or grease when reassembling.
Changing Materials
•When changing materials, flush the equipment mul- tiple times to ensure it is thoroughly clean.
•Always clean the fluid inlet strainers after flushing.
•Check with your material manufacturer for chemical compatibility.
•Most materials use ISO on the A side, but some use ISO on the B side.
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