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Important Isocyanate Information
Material
Material
Material Self
Self
Self-
-
-Ignition
Ignition
Ignition
Some materials may become self-igniting
if applied too thick. Read material
manufacturer’s warnings and Safety Data
Sheets (SDSs).
Keep
Keep
Keep Components
Components
Components A
A
A and
and
and B
B
B
Separate
Separate
Separate
Cross-contamination can result in cured
material in fluid lines which could cause
serious injury or damage to equipment. To
prevent cross-contamination:
• Never
Never
Never interchange component A and
component B wetted parts.
• Never use solvent on one side if it has been
contaminated from the other side.
Changing
Changing
Changing Materials
Materials
Materials
NOTICE
NOTICE
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 material manufacturer 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 (hardener) side. Polyureas often have
amines on the B (resin) side.
Moisture
Moisture
Moisture Sensitivity
Sensitivity
Sensitivity of
of
of Isocyanates
Isocyanates
Isocyanates
Exposure to moisture (such as humidity) will
cause ISO to partially cure, forming small, hard,
abrasive crystals that become suspended in the
fluid. Eventually a film will form on the surface
and the ISO will begin to gel, increasing in
viscosity.
NOTICE
NOTICE
NOTICE
Partially cured ISO will reduce performance
and the life of all wetted parts.
• Always use a sealed container with a
desiccant dryer in the vent, or a nitrogen
atmosphere. Never
Never
Never store ISO in an open
container.
• Keep the ISO pump wet cup or reservoir (if
installed) filled with appropriate TSL fluid.
The TSL fluid 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 solvent
containers closed when not in use.
• Always lubricate threaded parts with an
appropriate lubricant when reassembling.
• Cycle material through the Reactor at
least once per week when wetted and
sitting idle. Use the A-side transfer pump
to flush material through the A-side
outlet manifold recirculation fitting. See
.
• The Reactor should not be stored after
ingesting air or running out of material.
Prior to storage, follow the Purge Air
procedure in your operation manual.
NOTE:
NOTE:
NOTE: The amount of film formation and rate of
crystallization varies depending on the blend of
ISO, the humidity, and the temperature.
Foam
Foam
Foam Resins
Resins
Resins with
with
with 245
245
245 fa
fa
fa Blowing
Blowing
Blowing
Agents
Agents
Agents
Some foam blowing agents will froth at
temperatures above 90°F (33°C) when not under
pressure, especially if agitated. To reduce
frothing, minimize preheating in a circulation
system.
14
3A8500B