Pflaumer Brothers Introduces TERACURE® MCR-2, an MDI-Based Polyisocyanate Pre-Polymer for Corrosion-Resistant Polyurethane Primers

Pflaumer Brothers announces the introduction of TERACURE® MCR-2, an aromatic polyisocyanate pre-polymer based on diphenylmethane diisocyanate (MDI), engineered for use in moisture-cured and two-component polyurethane systems requiring exceptional corrosion resistance and long-term durability.

Developed to meet the increasing demand for high-performance protective coatings, TERACURE® MCR-2 delivers a robust combination of mechanical strength, chemical resistance, and formulation flexibility. It is particularly well suited for corrosion-resistant primers used on steel and other metal substrates where long-term protection and coating integrity are critical.

Corrosion continues to be one of the most costly challenges across industrial infrastructure, from structural steel to storage tanks and process equipment. TERACURE® MCR-2 was designed to help formulators address these challenges at the coating level. When incorporated into zinc-rich primer systems, it enables galvanic protection of steel substrates while supporting strong adhesion and durable film formation. The result is a coating system that helps extend asset life, reduce maintenance frequency, and improve overall system reliability.

TERACURE® MCR-2 can be used as a single component in moisture-cured polyurethane formulations for application on masonry and other porous substrates, functioning effectively as both a primer and a topcoat. It is also designed for use as a hardener in two-component polyurethane coatings and composite systems, both clear and pigmented. These systems can be formulated to deliver excellent mechanical properties along with strong resistance to chemicals and environmental exposure.

The product is compatible with urethane-grade ketones, aromatic solvents, and esters with very low moisture content, providing flexibility in formulation design. Its 100 percent solids content and controlled viscosity support the development of high-performance coatings with consistent application properties and film build.

TERACURE® MCR-2 gives formulators a reliable platform for building corrosion-resistant systems that perform in demanding environments without sacrificing processing flexibility or application efficiency.

Features

• Designed for both 2K polyurethane systems and 1K moisture-cure polyurethanes

• Outstanding chemical and corrosion resistance

• Excellent mechanical properties and toughness

• Compatible with a wide variety of isocyanate systems

• Testing indicates zinc rich primers based on TERACURE® MCR-2 provides improved resistance to mud cracking

  
  

TERACURE® MCR-2 is for industrial use only and should be evaluated through laboratory and field testing to determine optimal formulation and application conditions. Pflaumer’s technical service team is available to support customers with formulation guidance and application development.

Source: Pflaumer