Red drums of IPDI trimer curing agent stacked on pallets in a plant store

IPDI Trimer Polyisocyanate Curing Agents

Name: IPDI Trimer Polyisocyanate Curing Agents
Brand: KingZhi Chemistry

Light resistant isocyanurate hardeners for high end decorative coatings

Overview

What This Product Is and Who Buys It

IPDI trimer polyisocyanates are cycloaliphatic isocyanurates formed by trimerising isophorone diisocyanate. They are light resistant curing agents for high performance polyurethane coatings, and they give higher crosslink density than linear or low functionality aliphatic isocyanates while keeping good flexibility.

Key Benefits

Excellent light resistance and UV ageing resistance, better yellowing resistance than aromatic isocyanates
Rapid drying with a long pot life, so application flexibility is not lost
Well balanced hardness and flexibility from the higher crosslink density
Good compatibility with polyurethane and alkyd resin systems

Applications

Where This Material Is Used

Automotive refinish and industrial coatingsLight stable polyurethane topcoatsAlkyd based decorative coatingsMetal and machinery finishesOutdoor protective coatings

Who It Is For

Automotive refinish coating producers
Decorative and architectural coating formulators
Alkyd resin modifiers
Outdoor protective coating manufacturers

Problems It Solves

Decorative topcoats that need both fast handling times and a workable pot life
Alkyd systems needing modification without losing appearance
Outdoor metal finishes losing gloss and colour after a few seasons

Technical

Technical Features

Isocyanurate ring structure from IPDI trimerisation
Z4470 MPA/X at 70 percent solids in MPA/X 1:1
Z4470 BA at 70 percent solids in butyl acetate
Both grades at 11.9 percent NCO with different viscosities

Specifications

These figures are the manufacturer grade data as published for this product family. Anything not listed below has not been confirmed and is marked TBC on request rather than estimated.

Product	Supply Form	NCO (%)	Viscosity (23°C, mPa·s)	Typical Applications
Z4470 MPA/X	70% in MPA/X (1:1)	11.9	1,500	Light-stable PU coatings, alkyd resin modification
Z4470 BA	70% in BA	11.9	600	Light-stable PU coatings, alkyd resin modification

Grades listed are representative and not exhaustive. Ask for the batch certificate of analysis on the grade you intend to buy.

Handling

Packaging Storage and Shelf Life

Supply Forms: 70 percent solutions in MPA/X 1:1 or in butyl acetate
Storage: Original sealed containers, protected from moisture
Packaging: Contact us for available drum and IBC formats on this grade
Certification: Batch certificate of analysis supplied with shipment

Use Guide

How to Work With This Product

Select the solvent carrier that matches your existing system, MPA/X or butyl acetate
Note the viscosity difference: Z4470 MPA/X at 1,500 mPa·s, Z4470 BA at 600 mPa·s at 23 degrees C
Mix thoroughly and confirm pot life on your own line
Reseal containers immediately after decanting

Comparison

How It Compares

Within the Curing Agent category this product is positioned by the numbers in the table above rather than by a marketing claim. Compare NCO content, viscosity, equivalent weight or hydroxyl value against the alternative you are considering, and if the two are close, ask us for both samples and decide on your own line.

Quality and Documentation

Quality control runs across incoming raw materials, production and finished product inspection. A batch certificate of analysis is supplied with every shipment. We are a supply and trading company working with named manufacturers and OEM partners, so certification held by the producing plant is provided on request per grade rather than claimed here as ours.

Customisation

Customised grades and packing formats are available through our OEM partners and specialised manufacturing facilities. Tell us the property you need to move and we will say whether it is a grade change, a packaging change or not possible.

Industries

Industries Using This Product

Dark sports car finished with a high gloss automotive clearcoat

IndustryAutomotive and Transportation

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

Blue drums of adhesive raw material on pallets in a supply warehouse

IndustryAdhesives and Sealants

Adhesive makers live between two constraints: open time long enough to apply the product, and final strength high enough to replace a mechanical fastener.

See Applications

Solutions

Where This Product Fits In A Wider System

Chemical process plant columns and piping under a clear sky

SolutionTwo Component Polyurethane Coating Systems

A 2K polyurethane coating is a negotiation between pot life, dry speed, hardness and weathering. This is how we work through it with a formulator.

See The Process

FAQ

IPDI Trimer Questions

What is the difference between the two grades?

Chemically they are the same isocyanurate at 11.9 percent NCO. The difference is the solvent: Z4470 MPA/X is 70 percent in MPA/X 1:1 at 1,500 mPa·s, and Z4470 BA is 70 percent in butyl acetate at 600 mPa·s at 23 degrees C.

How does IPDI trimer compare with HDI trimer?

IPDI trimer gives harder films and better yellowing resistance from the cycloaliphatic ring. HDI trimer gives more flexibility and is available solvent free. Many formulators blend the two.

Can it be used with alkyd resins?

Yes. Alkyd resin modification is a listed application for both grades, alongside light stable polyurethane coatings.

Is the pot life really longer than other aliphatics?

A long pot life with excellent application flexibility is one of the stated performance characteristics of this family. Confirm it against your own catalyst and humidity conditions before committing a batch.