A review of modern PUR integral skin foams
From HFCs to H(C)FOs to other sustainable blowing agents
The search for safe and sustainable solutions plays a central role in the field of physical blowing agents for polyurethane foams. The complete elimination of all blowing agents in the PU sector with a Global Warming Potential of > 150 must be completed by the end of 2022 according to the European F-Gas Regulation. In this context, the transfer from HFC- to H(C) FO-based systems, especially for PU integral skin foams, is a very topical and challenging issue. Therefore, in this article we will focus on modern integral skin foam systems and the versatile possibilities that are entailed by environmentally friendly blowing agent alternatives.
By Sjören Schweizerhof and Natalia Fedicheva