Isocyanates
Aromatic, aliphatic and cycloaliphatic diisocyanates by NCO content
What This Category Covers
Isocyanates are the reactive half of every polyurethane system. They react with polyols to build the crosslinked network that carries the mechanical properties, chemical resistance and durability of the finished coating, foam, adhesive or elastomer.
Picking the wrong isocyanate class is expensive to discover late. Aromatic grades yellow under UV; aliphatic grades cost more but hold colour. We stock both so the choice is a formulation decision, not an availability decision.
Who Buys From This Category
- Flexible and rigid foam producers
- 2K polyurethane coating formulators
- Cast elastomer and roller manufacturers
- Adhesive and sealant compounders
- Optical resin and specialty material makers
All Isocyanates Products
Every product in this category, with its full grade table on the product page.
The aliphatic building block behind non yellowing polyurethane coatings
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Cycloaliphatic diisocyanate for hard weather resistant coatings
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The aromatic isocyanate behind flexible polyurethane foam
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The rigid foam and elastomer workhorse supplied as 4,4'-MDI
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Premium aromatic diisocyanate for high dynamic load elastomers
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Optical grade diisocyanate with aliphatic behaviour and aromatic economics
View SpecificationsCore Advantages
Full Class Coverage
Aromatic TDI, MDI and NDI alongside aliphatic HDI and cycloaliphatic IPDI and XDI, so one supplier covers the whole formulation range.
Purity Stated Up Front
Every grade in this category is quoted with its NCO content, purity and hydrolysable chlorine limit before you order.
Hazard Packing Handled
Specialised hazard packing and export documentation are prepared for these goods as standard, not as an afterthought.
Industries That Use These Materials
Automotive coatings and interiors are where yellowing resistance, gloss retention and seat comfort are all judged by the end customer rather than by a laboratory.
See Applications
Comfort products are judged by how they feel after three years, not on the day they ship. That is a raw material question about foam resilience and coating durability.
See ApplicationsSelection Guides For This Category
Aromatic isocyanates are faster and cheaper. Aliphatic isocyanates keep their colour. This guide sets out which property actually decides the choice.
Read The Guide
Both are aliphatic HDI derivatives and both give light stable coatings. Their crosslink density, viscosity and flexibility are not the same.
Read The Guide
Molecular weight sets flexibility, hydroxyl value sets stoichiometry, and acid value quietly sets service life.
Read The GuideIsocyanates Questions
How many isocyanates grades do you list?
This category covers 6 product families, and each one carries the full manufacturer grade table on its own page rather than a summary.
Can I order a mixed container across categories?
Yes. Isocyanates, curing agents, resins, polyols and chain extenders can go on one order, which is the main reason buyers consolidate with us.
Do you supply samples from this category?
Samples for laboratory testing and formulation validation are free of charge with you covering shipping, and take about 7 days.
What are the payment terms?
30% deposit in advance, 70% against a copy of the bill of lading. Bank transfer, Xtransfer or PayPal.
How is hazard packing handled?
High quality export packaging as standard, with specialised hazard packing for dangerous goods and validated cold storage shippers for temperature sensitive items. Non standard packing may carry an additional charge.
Get a Quote on Isocyanates
Tell us the grade, the volume and the destination port. Technical response within 24 hours.