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Sabic’s new Noryl AP2001G aromatic polyol can enhance hardness and toughness performance of MDI-BDO cast PU at high temperatures up to 70°C, which potentially allows applications in extreme conditions, such as for oil and gas exploration, gasketing and mining applications. (Source: Sabic)

25. November 2021

Sabic: Improving performance of cast polyurethanes

Sabic has launched Noryl AP2001G, an aromatic polyol that is said to significantly improve the performance of hot cast polyurethanes. Sabic said that by boosting the hardness, toughness and stiffness properties of cast PU by double digits, this polyol can enable MDI formulations cured with 1,4-butanediol to deliver equivalent or better performance compared to TDI and PTMG PU formulations cured with MOCA (4,4'-methylene bis(ortho-chloroaniline)).

Due to increasing scrutiny in the use of MOCA as a SVHC in the European Union, many PU manufacturers have adopted alternative formulations, including MDI-BDO. However, existing MDI-BDO systems pose performance challenges including lower mechanical and chemical properties vs. TDI-MOCA systems. The new product addresses both the SVHC issue and performance deficiencies of existing materials, providing formulators with an alternative solution to TDI formulations and an opportunity to reduce or eliminate MOCA.

“As manufacturers began to transition away from SVHCs, SABIC understood the need to assist customers with this challenge,” said Antonello Cerullo, Ph.D., senior business development manager, Sabic. “We collaborated with Troy Polymers to validate the notable performance benefits of our new Noryl polyol for MDI-BDO systems. Thanks to our innovative new modifier, customers may now achieve results comparable to – or even better than – what they experienced with TDI-MOCA and MDI-BDO formulations, while staying ahead of the tighter restrictions that are being placed on the MOCA curative.”

“Based on our extensive experience in innovative polyurethane solutions, we have verified the benefits of Sabic’s Noryl AP2001G polyol for cast polyurethanes based on MDI-BDO systems,” said Aisa Sendijarevic, Ph.D., research director, Troy Polymers. “While MDI-BDO technology can replace TDI-MOCA in some applications, adding NORYL AP2001G polyol significantly improves MDI-BDO performance and offers an alternative that is free of substances of very high concern. Our test results indicate this SABIC polyol may enhance the performance and regulatory compliance of cast polyurethane.”


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