Curable potting material for automotive battery packs

Abstract

A two-component composition consisting of a first component and a second component; wherein the first component includes: at least one polyol having an average OH functionality of at least 2; at least one first catalyst for catalyzing the reaction between hydroxyl groups and isocyanate groups; at least one second catalyst for catalyzing the trimerization reaction of isocyanate groups; optionally water; and preferably at least one foam stabilizer; and the second component includes at least one oligomeric or polymeric polyisocyanate; preferably at least one blowing agent; wherein the second catalyst is a trialkylphosphine compound; and wherein the molar ratio of all NCO groups in the two-component composition to all OH groups in the two-component composition is higher than 1.1, preferably higher than 1.3. The two-component composition is highly suitable as potting material for the production of structural battery packs using cell-to-body design.

Dependencies are inferred from the claim text.