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US 12,077,629 B2Granted
Isocyanate composition and binder system containing said isocyanate composition
AssigneeHüTtenes-Albertus Chemische Werke Gesellschaft Mit BeschräNkter Haftung
InventorsAnnika Klose, Markus Schabrucker
Life of this patent
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Abstract
What is described are isocyanate compositions comprising β-dicarbonyl compounds and a binder system, especially for use in a process from the group consisting of polyurethane cold-box process and polyurethane no-bake process, with this isocyanate composition as polyisocyanate component.
Claims13
An isocyanate composition comprising
- a) one or more isocyanates having at least two isocyanate groups per molecule
- b) one or more β-dicarbonyl compounds, wherein the one or more β-dicarbonyl compounds comprise a dialkyl ester of malonic acid
- c) a solvent which is not an isocyanate, a β-dicarbonyl compound or an aldehyde,
- where the concentration
- a) of the isocyanates is 60% to 89%
- b) of the β-dicarbonyl compounds is 1% to 38%,
- based in each case on the total mass of the isocyanate composition.
4 more elements
Dependencies are inferred from the claim text.