HDI Low viscosity TPA-100

HDI Low viscosity TPA-100


Type :

Aliphatic Polyisocyanate (HDI Trimer)



# High NCO content

# Lower viscosity

# Good coated film appearance

# Good weather resistance

# Low residual monomer


# Two-component applications# Plastic coatings# Auto refinish coatings

# Automobile, motorcycle ; base coat and top coat# Heavy duty coatings

Typical properties

AppearanceColorless to slightly yellowish clear liquid
Non-volatile100 wt%
NCO content23.1 wt%
Viscosity1400 mPa .s at 25°C
Color value<1 (Gardner)
NCO equivalent weightApprox.182
Flash point252°C
Density at 20°c1.17

These values provide general information and are not part of the productspecifications.

Stability / thinnability:

DURANATETM TPA-100 can be thinned with esters,

ketones and aromatichydrocarbons such as ethyl acetate, butyl acetate, methoxypropylacetate(PMA), methylethyl ketone, methyl-butyl ketone, cyclohexanone,toluene, xylene, Solvesso #100 andmixture thereof. Generally speaking, it has good compatibility with thesolventmentioned. However, the solutions formed must be tested for their storage stability.Only PU grade solvents can be used (max. 0.05% water, absence of reactive groupssuch as hydroxyl or amines groups). Aliphatic hydrocarbons such as hexane.cyclohexane, methylcyclohexanes and mineral spirits, are unsuitable as solventsbecause of their poor solubility.

DURANATETM TPA-100 should not be thinned to below a solid content of 40%.Prolonged storage of solution with lower solid content may result in turbidity andsedimentation.


Mixing ratio of DURANATETM TPA-100 with polyols is based on NCO/OH equivalentratio of 1/1.


DURANATETM TPA-100 is sensitive to moisture and should therefore always be storedin sealed containers.

Characteristics of iscosity:


Fig-3. Weatherability of DURANATETM TPA-100 with acrylic polyol

Polyol; Setalux 1198 & 1753 (Nuplex Resins)Weathered by Super-Xenon Weathermeter

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