Cardanol

Cardanol (CAS 37330-39-5) is a phenolic lipid derived from cashew nut shell liquid (CNSL), offering a bio-based alternative to petroleum-derived phenols in reactive polymer systems.

It functions as a reactive diluent, plasticizer, and surface-active modifier across coatings, adhesives, and polymer formulations. In epoxy coatings and anticorrosion primers, cardanol-based hardeners improve film flexibility.

This material maintains chemical resistance, which is a key performance balance for marine and industrial protective coatings. Adhesive and sealant formulators use it to reduce viscosity and enhance substrate wetting.

It achieves these properties without sacrificing cure performance. In phenolic resins and friction materials, it acts as a plasticizing co-monomer that reduces brittleness in brake pads and clutch facings.

Lubricant additive producers also incorporate it as a bio-derived base for metalworking fluids. Its phenolic structure contributes to boundary lubrication and surface interaction during industrial processes.

The product is supplied as a dark amber to brown viscous liquid. Technical grade is the standard commercial form, with purity specifications typically defined by hydroxyl value and unsaturation content.

These specifications are highly relevant to reactive applications. Refined and distilled grades with tighter color and composition profiles are available for demanding coating and polymer applications.