Successful commercial-scale trials of polyols in rigid foams

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  • Polyol blend offering 45% renewable content
  • Benefitting from properties derived from polypropylene carbonate (PPC) polyols
  • Superior flammability performance allows to eliminate up to 50% of flame retardant content

Novomer Inc. has announced the completion of a pair of successful commercial-scale rigid foam trials utilizing the company’s Converge CO2-based polyol blends. The trials were conducted at the so-called ce|de|pa testing facility in Tudela, Spain, an international testing center for the development of rigid polyurethane foam panels for thermal insulation.

Polyol blend offering 45% renewable content

The trials, completed in late 2015, included Novomer’s Converge Polyol RF-2, a polyol blend offering 45% renewable content due to the combination of Novomer’s CO2-based polyol with a recycled polyethylene terephthalate (r-PET) polyol. RF-2 joins RF-1 in Novomer’s lineup of Converge Polyol RF-X polyol blends tailored for the polyisocyanurate (polyiso) rigid foam industry.

Benefitting from properties derived from polypropylene carbonate (PPC) polyols

The polyol blends enable foam manufacturers to produce polyiso foams using traditional equipment and processing conditions while benefitting from the properties derived from polypropylene carbonate (PPC) polyols. The use of sustainable materials reduces the total petroleum feedstock content and allows for competitive pricing with incumbent polyols.

Superior flammability performance allows to eliminate up to 50% of flame retardant content

Both polyol blends were processed on full-scale continuous lamination lines and displayed very good adhesion to aluminum and steel facings. In follow-up tests, Converge Polyol RF-1 and RF-2 demonstrated improvements over conventional aromatic polyester polyols with lower peak heat release, reduced smoke development, and improved dimensional stability while maintaining very good mechanical and insulation properties. The superior flammability performance of both blends allows manufacturers to eliminate up to 50% of the flame retardant content found in traditional rigid foam formulations while meeting flammability requirements.

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