| abstract |
The present invention relates to a composite elastic polyurethane skin having an average flexural modulus of less than 35 MPa, measured according to ASTM D790‑03; the composite elastic polyurethane skin comprising: a first aliphatic polyurethane layer made from a first polyurethane reaction mixture, wherein The first polyurethane reaction mixture comprises at least one isocyanate compound (A1) having at least two NCO-groups not directly attached to the aromatic group, at least one isocyanate-reactive component (B1) and at least one catalyst group Part (C1), wherein the catalyst component (C1) is substantially free of lead; and a second aromatic polyurethane layer made from a second polyurethane reaction mixture, wherein the second polyurethane reaction mixture comprises at least one aromatic isocyanate compound (A2 ) and at least one isocyanate-reactive component (B2), characterized in that the complex elastic polyurethane skin has an average areal weight less than or equal to 750 g/m 2 and the second aromatic polyurethane layer has a 2 Average area weight. |