Important Isocyanate Info rmation
Material Self-Ignition
Some materials may become self-igniting if applied
too thick. Read material manufacturer’s warnings
and SDS.
Keep Components A and B Separate
Cross-contamination ca n result in cured
material in fluid lines which could cause serious
injury or damage to equipment. To prev ent
cross-contamination:
•
Never
interchange component A and component
Bwettedparts.
• Never use solvent on one side if it has been
contaminated from the other side.
Changing Materials
NOTICE
Changing the material types used in your
equipment requires special attention to avoid
equipment damage and downtime.
• When changing materials, flush the equipment
multiple times to ensure it is thoroughly clean.
• Always clean the fluid inlet strainers after
flushing.
• Check with your m aterial manu facturer for
chemical compatibility.
• When changing between epoxies and urethanes
or polyureas, disassemble and clean all fluid
components and change hoses. Epoxies often
have amines on the B (h ardener) side. Polyureas
often have amines on the B (resin) side.
Moisture Sensitivity of Isocyanates
Exposure to moisture (such as humid ity) will cause
ISO to partially cure, forming small, hard, abrasive
crystals that become suspended in the fluid.
Eventually a film will form on the s urface and the ISO
will b egi n to gel, incre as ing in vi sc os i ty.
NOTICE
Partially cured ISO w ill reduce performance and
the life of all wetted parts.
• Alw ays use a sealed container with a desiccant
dryer in the vent, or a nitrogen atmosphere.
Never
store ISO in an open container.
• Keep the ISO pump wet cup or reservoir (if
installed) filled with appropriate lubricant. The
lubricant creates a barrier between the ISO and
the atmosphere.
• Use only moisture-proof hoses compatible with
ISO.
• Never use reclaimed solvents, which may
contain moisture. Always keep solv ent
containers closed when not in use.
• Alw ays lubricate threaded parts with an
appropriate lubricant when reassembli ng.
NOTE:
The amount of film formation and rate of
crystallization varies depending on the blend of ISO,
the humidity, and the temperature.
Foam Resins with 245 fa Blowing
Agents
Som e foam b lowing a gen ts wi ll frot h at temp eratu res
above 90°F (33°C) when not under pressure,
especially if agitated. To reduce frothing, minimize
preheating in a circulation system.
8 333024F
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