Marine Anti-Osmosis Mold Release Wax

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Key Features

  • Highly purified hydrophobic wax minimizes polar residue on part surfaces
  • Reduces osmotic blistering initiation risk in marine service
  • 3–5 releases per application with high gloss finish
  • Compatible with ISO 2812-2 and Lloyds-approved marine gelcoat systems
  • Formulated specifically for marine hull composite production

This specialty marine mold release wax is formulated for the production of marine composite hull parts and boat components where osmotic blistering resistance is a critical performance requirement for the finished part. Conventional mold release waxes can leave trace hydrocarbon or polar residues on the part gel coat surface that act as osmotic initiation sites — points where water can permeate the gelcoat and initiate subsurface blistering in service. This product is formulated with highly purified, hydrophobic wax components that minimize polar residue transfer to part surfaces. The release wax provides the standard 3–5 releases per application with high gloss. Parts produced with this release wax have gelcoat surfaces with the lowest possible contamination level, reducing the risk of osmotic blistering in marine service. Recommended for marine hull production where ISO 2812-2 or Lloyds-approved gelcoat systems are used. Compatible with all standard marine polyester and vinyl ester gelcoats and laminates.

Specifications

ParameterValue
TypePurified hydrophobic marine wax
Shelf Life36 months
Compatible WithMarine polyester, vinyl ester gelcoat and laminate
Application MethodHand wipe/buff
Max. Mold Temperature60°C
Surface Polar ResidueMinimized
Releases per Application3–5

Applications

Marine hull and keel composite productionBoat deck and superstructure FRP productionMarine osmosis-resistant hull laminate productionYacht and performance boat gelcoat surfacesMarine production requiring ISO 2812-2 compliant gelcoat surfaces

FAQ

Osmotic blistering occurs when water migrates through the gelcoat to water-soluble contaminants within or behind the gelcoat. These contaminants create osmotic pressure that draws more water in, forming blisters. Mold release wax residues on the inner gelcoat surface are one potential contamination source. By using a purified, hydrophobic release wax that minimizes polar residue transfer, the concentration of osmotic initiation sites at the gelcoat surface is reduced, lowering long-term blister risk.

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