HYDROLYSIS-STABLE POLYURETHANE FOR USE IN THE OFF-SHORE SECTOR

摘要

The present invention relates to a process for producing polyurethane-coated conduit elements, in which (a) aliphatic polyisocyanate is mixed with (b) compounds having at least two hydrogen atoms which are reactive toward isocyanate, (c) catalyst and (d) optionally other auxiliaries and/or additives, to form a first reaction mixture, the reaction mixture is applied directly or indirectly to a pipe and allowed to react to form a polyurethane layer, wherein the compounds having at least two hydrogen atoms which are reactive toward isocyanate comprise a compound based on an alkoxylation product of an aromatic starter molecule. The present invention further relates to conduit elements which can be obtained by such a process.

主权项

1. A process for producing a polyurethane-coated conduit element, process comprising:
mixing an aliphatic polyisocyanate with a compound having at least two hydrogen atoms which are reactive toward isocyanate, catalyst and optionally an auxiliary, an additive or both, thereby forming a reaction mixture, and applying the reaction mixture to a conduit element and reacting the reacting mixture, thereby forming a polyurethane layer, wherein the compound is based on an alkoxylation product of an aromatic starter molecule.