Polyurethanbeschichtung zur Verwendung für Metall- und Betonanwendungen

Details

Veröffentlichungs-Nr.

EP4775608

Anmeldetag

8. Januar 2025

Veröffentlichung

15. Juli 2026

Rechtsraum

EP

Abstract

The invention relates to a two- or three-component composition comprising, in a spatially separated arrangement, a first component comprising a polyolefin having a polymer backbone consisting of repeating units derived from an olefinically unsaturated monomer having 4 carbon atoms and; and a second component comprising a preparation comprising at least one aromatic polyisocyanate having 2 or more isocyanate groups and/or a reaction product having isocyanate groups obtained by reacting said polyisocyanate having 2 or more isocyanate groups and a polyolefin having a polymer backbone consisting of repeating units derived from an olefinically unsaturated monomer having 4 carbon atoms; and optionally a third component, wherein the two or three-component composition further comprises at least one linear aliphatic polyisocyanate having 2 or more isocyanate groups and/or at least one cyclic aliphatic polyisocyanate having 2 or more isocyanate groups (b4) as constituent of the second component and/or third component, wherein the content of linear aliphatic polyisocyanate and/or cyclic aliphatic polyisocyanate is 10 wt.-% or less of the second component. The invention further relates to a coating preparation obtainable by mixing such composition, a cured composition obtainable by curing such coating preparation, a method of preparing a coating layer from such composition, a coated substrate obtainable by said method and the use of said coating preparation.

Anmelder

Firma

Sika Technology AG

Land

🇨🇭 Schweiz