Polyurethane Resin and Hardener in Nigeria: Uses, Types and Sourcing Guide

Polyurethane materials are used across a wide range of industrial applications, from protective coatings and adhesives to sealants, elastomers and other engineered materials. Depending on the chemistry and formulation, polyurethane systems can be designed to provide different combinations of hardness, flexibility, durability, chemical resistance and surface protection.

For manufacturers, contractors and industrial buyers looking for polyurethane resin and hardener in Nigeria, understanding the difference between polyurethane systems is important. Resin and hardener components are not interchangeable across every formulation, and the correct combination depends on the intended application and manufacturer’s specifications.

Polyurethane is also widely used in protective coating systems. Morven Industrial supplies polyurethane-based coating products from recognised coating manufacturers, including products for marine, industrial and structural steel applications.

This guide explains what polyurethane resin and hardener are, where polyurethane materials are used, the difference between one- and two-component systems, and what buyers should consider when sourcing polyurethane materials in Nigeria.

What Is Polyurethane Resin?

Polyurethane resin refers to polymer materials based on polyurethane chemistry. Polyurethane systems can be formulated in different ways depending on the properties and end use required.

Polyurethane chemistry covers a broad range of technologies, including rigid and flexible systems, one-component and two-component formulations, moisture-cured systems, waterborne polyurethane dispersions and other specialised formulations.

Because polyurethane chemistry is broad, the term “polyurethane resin” does not describe one single product. A resin intended for a protective coating can have very different characteristics from a polyurethane material intended for an adhesive, elastomer, foam or other application.

For industrial buyers, the intended use should therefore be established before selecting a polyurethane resin or related component.

What Is a Polyurethane Hardener?

In a two-component polyurethane system, the resin or base component is combined with a curing component, commonly referred to as a hardener or curing agent.

The two components react according to the formulation specified by the manufacturer to produce the finished coating or material.

The mixing ratio is product-specific. For example, Morven’s Interthane 990 is supplied as a two-pack acrylic polyurethane finishing product and uses a specified curing agent. Its product information gives the application and mixing instructions that must be followed for the product.

This is why buyers should not purchase a generic polyurethane hardener and assume that it will work with every polyurethane resin. The resin, hardener and mixing ratio should be matched according to the manufacturer’s technical documentation.

Common Types of Polyurethane Systems

Polyurethane technology covers several different types of systems. The appropriate type depends on the intended application.

One-Component Polyurethane Systems

One-component polyurethane products are supplied as a single ready-to-use component or as a formulation that cures under specified conditions. Depending on the product, curing may involve moisture or another mechanism specified by the manufacturer.

These systems can be useful where a simpler application process is required, although the specific product instructions and limitations still need to be followed.

Two-Component Polyurethane Systems

Two-component polyurethane systems contain separate components that are combined before application.

The correct mixing ratio, pot life, application method and curing conditions vary between products. The components should therefore be mixed only according to the manufacturer’s instructions.

Morven’s Interthane 870, for example, is listed as a two-component acrylic polyurethane finish for industrial applications including offshore structures, petrochemical facilities, bridges, pulp and paper facilities and power-industry environments.

Polyurethane Coating Systems

Polyurethane coatings are used where the finished surface requires a particular combination of appearance and protection. Depending on the formulation, polyurethane coatings can be used on steel and other suitable substrates in industrial, marine and infrastructure applications.

The American Chemistry Council notes that polyurethane coatings are used in areas including automotive, construction and other applications where coatings can contribute to durability, appearance and protection.

Where Are Polyurethane Materials Used?

Polyurethane systems are used in many industries because their chemistry can be formulated for different performance requirements.

Industrial Coatings

Polyurethane coatings can be used as finishing coats within protective coating systems for industrial steel and other suitable substrates.

Morven Industrial’s Painting and Protective Coating category includes polyurethane products from International Paint, PPG Sigma and Hempel.

Marine Coatings

Marine environments can expose coatings to moisture, salt, weathering and other demanding conditions. Certain polyurethane finishes are designed for specific marine areas and coating systems.

Interthane 990, for example, is listed for above-water marine areas including boot tops, exterior superstructures, external decks and topsides. The product should be used with the appropriate primer system for the vessel area specified by the manufacturer.

Structural Steel

Polyurethane topcoats can also be used as the finishing layer of protective coating systems for structural steel.

Morven lists Hempathane Topcoat 55210 as a glossy polyurethane topcoat recommended for structural steel in severely corrosive atmospheric environments where colour fastness and gloss retention are required.

Industrial Maintenance

Industrial facilities often require coating systems for maintenance and refurbishment of steel structures and equipment. A polyurethane finish can form part of the specified coating system where the product is suitable for the environment and existing coating system.

For example, Interthane 870 is listed for new construction and industrial maintenance applications across several industrial environments.

Polyurethane Resin and Hardener for Coatings

When polyurethane is being considered for a coating application, the resin and curing system should not be selected independently from the rest of the coating specification.

A complete coating system may include a primer, intermediate coat and polyurethane finish. Each layer has a specific function, and compatibility between the layers is important.

Morven’s PPG SigmaCover 280, for example, is a two-component epoxy primer used in protective coating systems and is listed as suitable for overcoating with two-component polyurethane coatings.

This illustrates why industrial coating selection should consider the complete system rather than focusing only on the polyurethane topcoat.

What to Consider When Buying Polyurethane Resin and Hardener

1. Identify the Application

First establish what the polyurethane material will be used for. Coatings, adhesives, sealants, elastomers and other polyurethane applications can require very different formulations.

2. Confirm the Substrate

For coating applications, identify the surface that will be coated. Steel, concrete, wood and other substrates can have different preparation and compatibility requirements.

3. Check the Resin and Hardener Compatibility

Do not assume that any polyurethane hardener can be mixed with any polyurethane resin. The components should come from the specified system and be used at the manufacturer’s stated ratio.

4. Review the Required Properties

Depending on the application, the buyer may need to consider hardness, flexibility, weathering, colour and gloss retention, chemical exposure, abrasion and other performance requirements.

5. Consider the Service Environment

A coating used indoors may face very different conditions from one used on a marine vessel, offshore structure or exposed steel installation.

Moisture, UV exposure, chemicals, saltwater, temperature and mechanical wear can all influence the choice of coating system.

6. Check Application Requirements

Review the required application method, surface preparation, mixing procedure, pot life, curing conditions and recoating requirements before purchasing a polyurethane product.

Why the Correct Mixing Ratio Matters

Two-component polyurethane products are designed around a specified relationship between the base and curing component. Changing the ratio can affect curing and final coating performance.

For example, Morven’s PPG Sigma 550 product information specifies a base-to-hardener mixing ratio of 88:12 by volume, while PPG SigmaCover 280 specifies an 80:20 ratio by volume. These are different products with different formulations, so their components should not be treated as interchangeable.

Always use the current technical data sheet for the specific product being applied and measure the components according to the manufacturer’s instructions.

Polyurethane Resin vs Polyurethane Coating

The terms polyurethane resin and polyurethane coating are related but should not be used as though they mean exactly the same thing.

A polyurethane resin can be a component or raw material used to formulate different polyurethane products. A polyurethane coating is a formulated product intended to be applied to a surface for a specific protective or decorative purpose.

For example, Morven’s Interthane 990 is a finished two-pack acrylic polyurethane coating product rather than a generic raw polyurethane resin.

This distinction is important when searching for polyurethane materials because a buyer looking for a raw resin and hardener may have different requirements from a contractor looking for a ready-formulated polyurethane coating.

Polyurethane Coating Products Available From Morven Industrial

Morven Industrial currently lists several polyurethane-based coating products within its protective coating range.

• Interthane 990 – two-pack acrylic polyurethane finishing product for suitable above-water marine applications.
• Interthane 870 – two-component acrylic polyurethane finish for industrial environments and maintenance applications.
• PPG Sigmadur 550 – two-component aliphatic acrylic polyurethane finish for atmospheric exposure.
• Hempathane Topcoat 55210 – polyurethane topcoat for specified structural steel applications.

These products are finished coating systems rather than a generic polyurethane resin-and-hardener catalogue. If you require a raw polyurethane resin or curing component for manufacturing or formulation, provide the exact material specification when making an enquiry so availability and compatibility can be confirmed.

Polyurethane Resin and Hardener Supplier in Nigeria

If you are sourcing polyurethane materials in Nigeria, it is important to provide the supplier with enough information to identify the required material.

Useful information can include the intended application, substrate, required performance characteristics, formulation requirements, quantity, packaging requirements and any existing technical specification.

For ready-formulated industrial and marine polyurethane coatings, Morven Industrial’s Painting and Protective Coating range provides access to polyurethane products from recognised coating manufacturers.

For raw polyurethane resin and hardener requirements, customers should state the exact resin or curing-agent specification required so that the appropriate product can be confirmed before purchase.

Polyurethane Materials for Industrial Applications in Nigeria

Polyurethane technology can be relevant to a wide range of industrial applications, but the correct formulation depends heavily on the intended use.

For protective coatings, the coating system should be selected according to the substrate and service environment. For manufacturing applications, the resin and curing components should be selected according to the formulation and processing requirements.

Where a project involves marine or coastal steel, polyurethane may form part of a wider protective coating system. You can also read our guide on saltwater corrosion in Nigeria’s marine environment to understand the coating challenges associated with marine exposure.

How to Request Polyurethane Resin or Hardener

When contacting a supplier, avoid requesting only “polyurethane hardener” without identifying the intended system. There are different polyurethane chemistries and curing systems, and the required component depends on the resin or formulated product.

Instead, provide the product name, technical specification, manufacturer reference, application and quantity where available.

This is particularly important for two-component systems because the resin and curing component must be compatible and used according to the manufacturer’s specified mixing ratio.

Where to Buy Polyurethane Products in Nigeria

Morven Industrial Limited supplies industrial, marine and protective coating products in Nigeria, including polyurethane-based coating products from International Paint, PPG Sigma and Hempel.

To view available polyurethane-related coating products, visit the Painting and Protective Coating category.

If you are specifically looking for a raw polyurethane resin or hardener, contact Morven Industrial with the exact specification or product requirement so that the appropriate material can be confirmed.

Request Polyurethane Resin, Hardener or Coating Products

Whether you require polyurethane materials for industrial formulation, protective coating work, marine maintenance or another application, provide the product specification and intended use when making an enquiry.

You can browse Morven Industrial’s Painting and Protective Coating range or visit the Morven Industrial contact page to send your enquiry.

For two-component polyurethane systems, always follow the manufacturer’s technical data sheet, mixing ratio, application procedure, curing requirements and safety instructions.