Name: IPDI Trimer Crosslinker (Isophorone-based)
Brand: Coatingsink
SKU: ipdi-trimer-crosslinker-z4470
Availability: InStock

Question 1

What are the key performance advantages of IPDI trimer over HDI trimer crosslinkers?

Accepted Answer

IPDI trimers produce coatings with higher hardness and scratch resistance due to the bulky cycloaliphatic ring in the IPDI monomer, making them preferred for wood furniture lacquers and plastic topcoats. HDI trimers yield slightly more flexible films with lower viscosity. Both are aliphatic and UV-stable, but IPDI-based coatings typically show better solvent resistance and surface hardness.

Question 2

How should I store IPDI trimer crosslinker to prevent NCO degradation?

Accepted Answer

Store in tightly sealed original containers in a dry environment below 30°C, away from moisture, alcohols and amines. Isocyanate groups react readily with atmospheric moisture to form carbon dioxide bubbles and urea species, which increase viscosity and reduce effective NCO content. Once opened, blanket the container with dry nitrogen before resealing. Shelf life is typically 12 months under proper storage conditions.

NCO Content	11.9–12.4%
Solid Content	75% (in butyl acetate)
Color (Gardner)	≤1
Pot Life (with polyol)	4–8 h
Viscosity (25°C, 75% in BA)	1200–2500 mPa·s

IPDI Trimer Crosslinker (Isophorone-based)

Specifications

FAQ

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