Sistema aglutinante á base de poliuretano processo para a produçao de um sistema aglutinante aplicaçao de ésteres metílicos de ácidos graxos superiores processo para a produçao de moldes e núcleos de fundiçao e aplicaçao de um aglutinante á base de poliuretano

Sistema aglutinante á base de poliuretano processo para a produçao de um sistema aglutinante aplicaçao de ésteres metílicos de ácidos graxos superiores processo para a produçao de moldes e núcleos de fundiçao e aplicaçao de um aglutinante á base de poliuretano

The polyurethane-based binder system (I) for foundry mould materials, contains a phenolic resin (A) with free OH groups and a polyisocyanate (B) with monomethyl esters of fatty acid(s) (C) with a chain of 12 or more C atoms as solvent or solvent component for (A) and/or (B). Also claimed are: (i) a...

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Bibliographische Detailangaben
1. Verfasser: MAREK TORBUS
Format: Patent
Sprache:por
Schlagworte:
CASTING
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
FOUNDRY MOULDING
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PERFORMING OPERATIONS
POWDER METALLURGY
THEIR PREPARATION OR CHEMICAL WORKING-UP
TRANSPORTING
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:The polyurethane-based binder system (I) for foundry mould materials, contains a phenolic resin (A) with free OH groups and a polyisocyanate (B) with monomethyl esters of fatty acid(s) (C) with a chain of 12 or more C atoms as solvent or solvent component for (A) and/or (B). Also claimed are: (i) a process for the production of (I), in which (A) and/or (B) is/are dissolved in (C); and (ii) the production of foundry moulds and cores from a moulding material containing (I) as binder.