Two-Component Epoxy Primer | High Performance Epoxy Bonding Primer for Concrete & Industrial Surfaces

Two-Component Epoxy Primer | High Performance Epoxy Bonding Primer for Concrete & Industrial Surfaces

LANGUAN 680 Two-Component Epoxy Primer is a solvent-free, flowable two-part epoxy primer composed of epoxy resin A and hardener B. It features powerful penetration and sealing performance to reinforce concrete substrates, acting as a stable bonding base for epoxy resin floors and cement self-leveling flooring systems.

This matched primer is exclusively developed for the full LANGUAN flooring series, delivering excellent substrate sealing, anti-moisture and high-adhesion effects to avoid floor hollowing, peeling and bubbling for long-term industrial and commercial floor projects.

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TDS MSDS

Product Overview

LANGUAN 680 is a solvent-free two-component epoxy primer with great penetration and sealing capacity. It consolidates porous concrete bases, blocks substrate moisture, and creates a firm bonding layer to support subsequent epoxy flooring or cement self-leveling construction, effectively preventing common floor detachment and bubbling defects.

Wide Range of Applications

Customized for all LANGUAN complete flooring systems, including epoxy resin floors and cement-based self-leveling floors, widely used in industrial workshops, warehouses, parking lots and commercial space renovation. Applicable Base Surfaces: New concrete ground, old cement floors, porous base layers It serves as essential sealing and priming treatment before intermediate repair mortar and self-leveling construction.

Outstanding Product Features & Performance

It adopts A:B=15:5 matching ratio, with 35 mins pot life at 23°C, walkable after 8–10 hours and 24-hour minimum recoating interval; one full set covers 40–80㎡. Solvent-free eco formula, strong penetration sealing and high adhesion; needs sand broadcasting for mechanical anchoring under self-leveling systems. Packaged as 15kg A + 5kg B, unopened shelf life reaches 24 months under dry, shaded 5–30°C frost-free storage; only applicable when surface RH≤75% and temperature ≥10°C with full ventilation during construction.

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