LOCTITE FREKOTE semi-permanent release agents, pore sealers and mold cleaners for composite manufacturing

Technical specifications

Specifications are taken from the manufacturer’s technical documentation. Updated 11/06/2026.

Description

The release agents contain no wax or silicone. After application to the mold they cure on its surface and form a durable, chemically resistant and thermally stable film with low surface energy. Such a semi-permanent layer bonds to the mold, so a single application gives many releases with minimal transfer to the part and minimal tooling contamination. For aircraft parts that are bonded or painted after molding this matters, because release agent residues impair the adhesion of adhesives and coatings. The materials are suitable for epoxies, phenolic resins and bismaleimides, prepregs, rubbers, silicones, polyester and vinyl ester resins, urethanes and thermoplastics, as well as for MRO and repair. They are used in hand lay-up, filament winding, AFP/ATL, injection molding, autoclave molding, compression molding, vacuum bag, pultrusion, RTM and rotational molding.

How to choose

Choose the product by base, water-based or solvent-based, working temperature, slip and release characteristics, and tendency to transfer to the part. These determine the number of releases between reapplications and the cleanliness of the surface before bonding or painting. Specific grades, application temperatures and the number of releases should be checked in the technical documentation. For preparing tooling and surfaces before bonding look at the cleaners and deoxidizers of the BONDERITE C-AK series.