Polyurethane and Polyurea Coatings that Protect & Endure

Sales 1-314-664-2230 | marketing@chemline.net

Hot Cast Prepolymers

Hot Cast urethane prepolymers are used in the most rigorous applications where the highest performance is required. Processing of these polyurethane elastomers generally involves heated components and tooling along with a hot post-cure to optimize properties. In most cases, low to medium cost mixing equipment and tooling are adequate. Our Hot Cast polyurethanes are used extensively in mining, industrial tires, and metal manufacturing markets.

Applications

  • Oil & Gas
  • Mining
  • Industrial Tires & Wheels
  • Recreational & Amusement Wheels
  • Belting
  • Timber & Forestry
  • Pulp & Paper
  • Printing & Coating
  • Marine
  • Steel & Metal Manufacturing
  • Transportation
  • Agriculture
  • Electronics
  • Food Contact

Specifications

Available Chemistries

  • Isocyanates: MDI, TDI, H12MDI
  • Polyols: Ester, PTMEG, PPG, Caprolactone, Polycarbonate and other specialty backbones
  • Curatives: HQEE, 1,4 Butanediol, Polyols and custom blends

Processing – By Hand or Machine

  • Open pour
  • Compression molding
  • Bottom-fill/liquid injection
  • Spin-casting
  • Rotational casting
  • Spray

Attainable Properties

  • Superior abrasion resistance
  • High resilience
  • High load bearing capability
  • Cut, tear and fatigue resistance
  • Custom formulations
  • Hardness available from 20 Shore A  to 85 Shore D
  • Chemical resistance
  • Hydrolysis resistance

Product Data Sheets

TDI PPG: these products are generally characterized by: ease of processing, room-temperature liquidity and low viscosity

TDI/PTMG: these products are generally characterized by: robust processing, hydrolytic stability, low-temperature flexibility and excellent dynamic load-bearing capability

TDI/ESTER: these products are generally characterized by: resistance to cut/tear, oils & solvents and high temperatures

TDI/CAPROLACTONE: these products are generally characterized by: a unique combination of chemical resistance, high cut/tear properties and good hysteretic performance

MDI/PPG:  these products are generally characterized by: ease of processing, room-temperature liquidity, low viscosities and use of non-MBCA curatives

MDI/PTMG: these products are generally characterized by: high resilience and the best hydrolytic stability and low-temperature flexibility

MDI/ESTER: these products are generally characterized by: an excellent combination of cut/tear & fatigue resistance, oil & solvent resistance and good dynamic properties

MDI/CAPROLACTONE: possesses both good hydrolytic stability and chemical resistance along with an excellent balance of cut/tear, hysteretic performance and general toughness

ALIPHATIC/PPG: these products are generally characterized by: very long pot lives and excellent UV and color stability

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