• Polyurethane Solutions

  • Polyurethane Solutions

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CNSL Polyurethane Solutions

Meet the demands of modern applications

Polyurethane Chemistry Structure

Polyurethane Chemistry

Polyurethane bonds form by reacting diisocyanates with polyols, creating a segmented polymer network:

  • Soft segments (polyols/diols): Provide elasticity, resilience, and low-temperature flexibility
  • Hard segments (diisocyanate/chain extender): Contribute hardness and structural strength

Common building blocks:

  • Diisocyanates: TDI, MDI/PMDI, HDI, IPDI
  • Polyols/diols: Polyethers, polyesters, castor-derived, polycarbonates, polycaprolactones, amine-terminated, acrylic polyols

Customizable with additives:

  • Catalysts, surfactants, moisture scavengers, diluents
  • Flame retardants, pigments, fillers

Key benefits:

  • Mechanical strength and adhesion
  • Weatherability and abrasion/tear resistance
  • Versatile use in coatings, adhesives, foams, elastomers, and more

CNSL Polyurethane Solutions

Meet the demands of modern applications

Protection

Hydrophobicity

Cardanol’s long aliphatic side chain provides inherent hydrophobicity, helping enhance polyurethane formulation water resistance and minimize moisture-related issues during cure.

Key benefits include:

  • Adhesion to damp substrates
  • Hydrolytic stability for long lasting protection
  • Good appearance of the final product in humid conditions


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Reactivity

Tailored reactivity

CNSL-based polyols and diols provide fast cure with minimal additional catalysts, enabling efficient crosslinking and strong network formation even at ambient conditions.

This helps to:

  • Simplify formulations, reducing overall system cost
  • Accelerate return-to-service for enhanced productivity


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Cashew Apple Web 2

Aromatic advantage

The aromatic backbone of CNSL polyols differentiates them from other natural oil-derived polyols like soy or castor oil. This feature provides enhanced durability and mechanical properties that are difficult to achieve using other bio-based polyols.

Including:

  • Higher strength
  • Better thermal stability
  • Improved chemical resistance


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CNSL Polyurethane Solutions

Meet the demands of modern applications

Hydrophobicity

The inherent hydrophobicity of Cardanol’s long aliphatic side chain enhances the water resistance of polyurethane formulations and prevents moisture-related defects during the curing process.

Key benefits include:

  • Damp Substrate Adhesion: Ensures reliable bonding by displacing surface moisture
  • Hydrolytic Stability: Resists water-induced degradation for extended service life
  • Humid Environment Reliability: Prevents moisture-related defects, like carbon dioxide gassing, to maintain surface integrity

Tailored Reactivity

CNSL-based polyols and diols are inherently reactive, enabling rapid crosslinking with minimal catalyst requirements. This ensures a robust network formation even under ambient conditions, allowing for consistent performance in diverse environments.

This helps to:

  • Simplified Formulations: Reduces the need for additional catalysts, lowering overall system complexity and cost
  • Accelerated Return-to-Service: Faster curing cycles increase throughput and improve field productivity

Aromatic advantage

The aromatic backbone of CNSL polyols provides a distinct structural advantage over traditional bio-based alternatives, such as soy or castor oil. While most natural oils are purely aliphatic, the phenolic ring structure of CNSL imparts high-performance characteristics.

Including:

  • Enhanced Mechanical Strength: The rigid aromatic rings provide greater structural integrity and load-bearing capacity
  • Better Thermal Stability: CNSL-based systems maintain performance at higher service temperatures compared to other bio-polyols
  • Broad-Spectrum Chemical Resistance: The phenolic nature offers a natural defense against harsh environments, acids, and alkalis


Learn more about CNSL and Cardanol technology

Product Offering and Applications

Link to: Polyurethane Products
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Polyurethane Products


Cardolite offers a line of raw materials derived from cashew nutshell liquid (CNSL) for polyurethane systems that deliver unique performance advantages over conventional polyester, polyether, and other natural oil-based systems.

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Polyurethane Markets


From industrial 1K and 2K coatings to adhesives, sealants, elastomers, and more, CNSL-derived products help enhance performance and solve formulation challenges in a variety of polyurethane applications.

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Contact Us

For more information, please contact your sales representative or submit an inquiry on our site.

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Contact Us

For more information, please contact your sales representative or submit an inquiry on our site.

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