CAS 106264-79-3 polyurethane curing agent
About polyurethane curing agent
Polyurethane is made of two components, a polyol (also called
polyhydroxy) and polyisocyanate (also called isocyanate). These are
mixed in a one-to-one ratio. The polyol part is described in the
part about the polyurethane resin.
For simplicity, the polyisocyanate portion of the polyurea can be
referred to as a curing agent. Polyurethane can be provided as a
two-pack system, where polyol is part A and polyisocyanate is part
B. When these two liquids are mixed together, they will react
completely, forming chemical bonds between them called crosslinks,
and form a solidified solid form. Polyurethane is also available as
a single-pack system, consisting of partially reacted polyurethane
polymers. During the manufacturing process, these systems also
react with moisture to form a solidified solid.
Polyurethane in the composite industry is used in composite
laminates in the form of resin. In composite parts, resin binds the
fibers together, allows loads to be transferred between the fibers,
and provides a barrier to weather, water, or chemicals.
Polyurethane is also used as an adhesive and can be provided in a
two-pack or single-pack system. Some polyurethanes can be made into
foams by adding blowing agents and using appropriate manufacturing
If any of the two components of the polyurethane resin comes into
contact with the eyes and skin, it may cause irritation. It can
also cause irritation if any chemicals are inhaled or swallowed.
The polyisocyanate part of polyurethane is more dangerous than the
polyol part. This is because polyisocyanates can cause respiratory
allergies. Once a person becomes sensitive, any future contact will
cause an allergic reaction, even if the exposure is small.
|Expansion Multiple(time)||Max. 80|
|Cuttable Time(30mm diameter)(minute)||Approx. 30|
|Optimal Application Temp.(℃)||+5~+35|
|Min. Application Temp.(℃)||+18~+25|
|Min Temp. of can(℃)||10|
|Tensile Strength(Aluminum Plate)(KPA)||120|
|Tack- free Time(minute)||Max. 10|
|Temp. Resistance(Long Term)(℃)||-30~+80|
|Temp. Resistance(Short Term)(℃)||-40~+110|
|Contents of formaldehyde and benzene||None|
|Fire Retardant Factor||B2|
|Toxicity after curing||None|
|Shelf Life(18~22℃, store upside) (Month)||9|
Special Protection Information
Respiratory Protection: Adequate ventilation must be provided. If
above the NOHSC exposure standard, use SA approved respiratory
protective equipment. If dust is generated during cutting or
machining/grinding/sanding of cured product, wear disposable dust
mask (Type P1). or better as determined by you risk assessment.
When using resin system (including hardener) with fibres, use
combination mask with vapour and dust particle filter.
Eye Protection:Use SA approved chemical splash goggles.
Protective Clothing:Wear chemical resistant gloves such as butyl
rubber or neoprene rubber gloves. Apply full dermal protection to
un-covered skin. Wear full length trousers and long sleeved shirts
and safety boots.
CONSULT SAFETY EQUIPMENT SUPPLIERS FOR RECOMMENDATIONS.
Effects of Exposure
Eyes:May cause irritation and redness.
Inhalation:May cause irritation of the respiratory tract.
Isocyanates are known to cause sensitisation of the respiratory
Skin:Prolonged and/or frequent contact can result in irritation of
Swallowing:May cause some gastrointestinal irritation.
First Aid Procedures
Eyes:Flush with water for at least 15 minutes.
Inhalation:Remove to fresh air. If breathing is difficult, seek
immediate medical assistance.
Skin:Remove contaminated clothing for laundering. Wash with soap
and water. Do NOT use solvents.
Swallowing: Do NOT induce vomiting. If person is conscious, they
should drink large quantities of water. Seek medical advice
Spill or Leak Procedures
Eliminate all sources of ignition and ventilate area. Wearing
protective equipment, stop spill at source, dam area and if
possible pump liquid into salvage tank. Alternatively, absorb
residue with vermiculite or sand. Scoop up using non-sparking tools
into labelled waste container. Flush area with water, but prevent
it from entering waterways. Dispose of waste in accordance with
local, state and federal regulations. Reporting of spills/leaks may
be required under EPA and Dangerous Goods regulations.
Fire Extinguishing Procedures
Wear protective clothing and equipment including self-contained
breathing equipment. In general, use foam or carbon dioxide to put
out fires. (Refer to MSDS). Cool fire exposed containers with water
Storage and Handling Procedures
DG Class 3 (Flammable liquid). Store in properly closed, labelled
containers in a cool area, fitted with floor level and breathing
zone ventilation to remove vapours which collect at these levels.
Ensure all sources of ignition are eliminated. Keep away from
strong oxidising agents. Do not transfer to unmarked containers. Do
not transfer to unapproved plastic containers. Earth containers
when pouring to prevent the discharge of static electricity.