Resins as Raw Materials

Resins act as the binder in coatings, adhesives and composites, holding pigments and fillers together and bonding the finished product to its substrate. The main resin families used as raw materials are acrylics, alkyds, polyesters and epoxies, each offering a different balance of gloss, flexibility, chemical resistance and cost.

How Resins Are Used in Manufacturing

Resins are incorporated as the binder phase during dispersion manufacture or resin manufacture, central to coatings and paints, adhesives and sealants and resins and polymers more broadly.

Buying Resin Versus Making It

Resins can be bought in as raw materials or manufactured in-house by polymerisation, and which route applies changes the manufacturer requirement entirely. Formulating with bought-in resin needs blending capability; making the resin needs reaction capability, rated vessels and substantial cooling - a much shorter list of possible manufacturers.

Clarifying which you need is therefore one of the first questions in a search. Many products described as resin manufacture are in fact resin formulation, and a manufacturer capable of the latter may not be capable of the former. See resin manufacture.

Handling and Specification

Resins arrive in forms ranging from low-viscosity liquids to solids requiring melting or dissolution, and the form dictates the handling. High-viscosity resins may need heated storage and heated transfer, solid resins need dissolving or melting equipment, and both add constraints on which sites can work with them conveniently.

Resin specification goes beyond type. Molecular weight and its distribution, functionality, viscosity and residual monomer content all affect the finished product, and two resins of the same nominal type from different suppliers can perform noticeably differently. This makes resin one of the materials where naming an approved supplier and grade is often justified, and where substitution genuinely requires validation rather than paper equivalence. Reactive resins also have limited storage life and can advance in the container, so shelf life and storage conditions need managing on the incoming material as well as the finished product.

Delivery Form and Site Constraints

Ask how resin will be delivered and whether the site can receive it in that form. Bulk delivery in heated tankers requires heated storage; drums of solid resin require handling and melting capability. A manufacturer able to formulate with your resin may still be unable to take it in the format your supplier ships, which is a practical constraint worth checking before committing.

Questions to Ask a Manufacturer

• What resin systems do you have experience formulating with for our application?
• Can you advise on the trade-offs between resin families for our performance requirements?
• Do you source resin as a raw material, or manufacture it in-house as part of the process?
• How do you verify resin batch consistency and quality on receipt?

Related Pages

• Coatings and paints
• Resin manufacture
• Monomers

Frequently Asked Questions

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Last reviewed: August 2026. Regulation and guidance change — verify anything you rely on against the primary source. Tell us if something here is out of date.