Polyurethane-based binder, as well as the production thereof
AssigneeHüTtenes-Albertus Chemische Werke Gesellschaft Mit BeschräNkter Haftung
InventorsMarek Torbus, Aleksandar Vujevic
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Abstract
A cold setting molding material which includes sand and a polyurethane binder with the polyol portion of the polyurethane reaction mixture containing a tertiary amino group and phenolic hydroxyl groups.
Claims5
Cold-setting moulding material binder with a polyurethane base for moulding material mixtures for producing moulds and cores, comprising a polyisocyanate with at least two NCO groups in the molecule and an amino polyol containing at least two OH groups, as well as a tertiary amino group acting as the accelerator in the molecule, characterized in that the amino polyol contains phenolic OH groups.
Dependencies are inferred from the claim text.