ImportantIsocyanateInformation
Material Material
Material
Self Self
Self
- -
-
Ignition Ignition
Ignition
Somematerialsmaybecomeself-igniting
ifappliedtoothick.Readmaterial
manufacturer’swarningsandSafetyData
Sheets(SDSs).
Keep Keep
Keep
Components Components
Components
A A
A
and and
and
B B
B
Separate Separate
Separate
Cross-contaminationcanresultincured
materialinuidlineswhichcouldcause
seriousinjuryordamagetoequipment.To
preventcross-contamination:
•Never Never
Never
interchangecomponentAand
componentBwettedparts.
•Neverusesolventononesideifithasbeen
contaminatedfromtheotherside.
Changing Changing
Changing
Materials Materials
Materials
NOTICE NOTICE
NOTICE
Changingthematerialtypesusedinyour
equipmentrequiresspecialattentiontoavoid
equipmentdamageanddowntime.
•Whenchangingmaterials,ushthe
equipmentmultipletimestoensureitis
thoroughlyclean.
•Alwayscleantheuidinletstrainersafter
ushing.
•Checkwithyourmaterialmanufacturerfor
chemicalcompatibility.
•Whenchangingbetweenepoxiesand
urethanesorpolyureas,disassembleand
cleanalluidcomponentsandchange
hoses.Epoxiesoftenhaveaminesonthe
B(hardener)side.Polyureasoftenhave
aminesontheB(resin)side.
Moisture Moisture
Moisture
Sensitivity Sensitivity
Sensitivity
of of
of
Isocyanates Isocyanates
Isocyanates
Exposuretomoisture(suchashumidity)will
causeISOtopartiallycure,formingsmall,hard,
abrasivecrystalthatbecomesuspendedinthe
uid.Eventuallyalmwillformonthesurface
andtheISOwillbegintogel,increasingin
viscosity.
NOTICE NOTICE
NOTICE
PartiallycuredISOwillreduceperformance
andthelifeofallwettedparts.
•Alwaysuseasealedcontainerwitha
desiccantdryerinthevent,oranitrogen
atmosphere.Never Never
Never
storeISOinanopen
container.
•KeeptheISOpumpwetcuporreservoir(if
installed)lledwithappropriatelubricant.
Thelubricantcreatesabarrierbetweenthe
ISOandtheatmosphere.
•Useonlymoisture-proofhosescompatible
withISO.
•Neverusereclaimedsolvents,whichmay
containmoisture.Alwayskeepsolvent
containersclosedwhennotinuse.
•Alwayslubricatethreadedpartswithan
appropriatelubricantwhenreassembling.
NOTE: NOTE:
NOTE:
Theamountoflmformationandrateof
crystallizationvariesdependingontheblendof
ISO,thehumidity,andthetemperature.
Foam Foam
Foam
Resins Resins
Resins
with with
with
245 245
245
fa fa
fa
Blowing Blowing
Blowing
Agents Agents
Agents
Somefoamblowingagentswillfrothat
temperaturesabove90°F(33°C)whennotunder
pressure,especiallyifagitated.Toreduce
frothing,minimizepreheatinginacirculation
system.
8 333023U