Munich, Germany -- The European Patent Office (EPO) has published details of a Recticel method for producing a flexible elastomeric polyurethane skin.
The Belgium-based polyurethane foam producer’s Recticel Automobilsysteme, based in Rheinbreitbach, Germany, filed the innovation in May 2006. It was published on the EPO website on 4 March 2015.
According to the application, the company seeks to protect a method “producing a flexible elastomeric composite polyurethane skin wherein a polyurethane reaction mixture is sprayed onto a mould surface.”
The method uses at least one isocyanate component, isocyanate-reactives and catalyst - with the isocyanate component having at least one isocyanate with at least two NCO-groups not directly attached to an aromatic group, the application states.
The catalyst component is substantially free of lead, which leads to a lower flexibility, the firm’s application claims. In accordance with the invention, the flexibility of the polyurethane skin is increased by means of at least one flexibiliser which reduces the flexural modulus of the skin and which comprises at least one isocyanate-reactive group. The flexibiliser is preferably a monofunctional flexibiliser which comprises only one isocyanate-reactive group, it continued.
The patent number is 10168558.4.