Patent ID: 8431058

Claim:
A process for producing a polyurethane sandwich component, the method comprising: i. applying a polyurethane reaction mixture to a reinforcing fiber layer upon a core layer, to obtain a first component; ii. placing the component from i. into a mold, pressing the first component in the mold, compressing and shaping the first component in the mold and hardening the polyurethane reaction mixture in the mold, to obtain a molding; iii. removing the molding from the mold; and, iv. optionally, subjecting the molding to a downstream operation, wherein the polyurethane reaction mixture in the applying i. comprises (a) a polyisocyanate, (b) a compound reactive with an isocyanate, (c) a reactive chain extender comprising at least two groups reactive toward an isocyanate, wherein at least one of the groups reactive toward isocyanates is a free, primary NH 2 group, (d) a catalyst, and (e) optionally, a further additive.