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US 2026/0308431 A1Published application
Curable composition
AssigneeEvonik Operations GmbH
InventorsNicolai KOLB, Alexander EL AZZAWI, Laura BORG
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Abstract
A curable composition containing a polymer having at least two isocyanate-reactive groups that can react with isocyanate groups, where at least one of these isocyanate-reactive groups is a CH-acidic group, and a polyfunctional isocyanate having at least one isocyanate group and an alkaline earth metal organyl catalyst.
Claims20
A curable composition, comprising:
- a polymer comprising at least two isocyanate-reactive groups, wherein at least one of the at least two isocyanate-reactive groups is a CH-acidic group,
- a polyfunctional isocyanate comprising at least one isocyanate group,
- from 0.005 mol % to 15 mol % at least one alkaline earth metal organyl catalyst, based on the molar amount of CH-acidic groups of polymer, wherein the organyl is selected from the group consisting of alkoxides, complexes based on 1,3-diketones, and a mixture thereof,
- and optionally further additives, polymers, and/or fillers,
- wherein the amount of the polymer and the amount of the polyfunctional isocyanate is such that a molar ratio of isocyanate-reactive groups of the polymer to isocyanate groups of the polyfunctional isocyanate is from 10:1 to 1:10.
2 more elements
Dependencies are inferred from the claim text.