C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 75/04 (2006.01) B22C 1/22 (2006.01) C08K 5/06 (2006.01) C08K 5/29 (2006.01) C08K 5/3432 (2006.01)
Patent
CA 2165080
This invention relates to polyurethane-forming foundry binder systems which contain a nitrogen-containing aromatic compound selected from the group consisting of 2,2'-dipyridyl, 1,10-phenanthroline, and their substituted alkyl derivates. The foundry binder systems are particularly useful for making foundry mixes used in the cold-box fabrication process for making foundry shapes. However, the binders systems can also be used to hold foundry shapes, such as molds and cores, together in an assembly.
L'invention concerne des systèmes de liants pour fonderie qui forment un polyuréthane et qui comportent un composé aromatique, contenant de l'azote, sélectionné dans le groupe consistant en 2,2'-dipyridyle, 1,10-phénathroline et leurs dérivés alkyles substitués. Ces systèmes de liants pour fonderie se révèlent particulièrement utiles pour élaborer des mélanges pour fonderie utilisés sans le processus de fabrication à boîte froide destiné à la réalisation d'empreintes de fonderie. On peut cependant aussi utiliser de tels systèmes de liants pour maintenir des assemblages d'empreintes de fonderie tels que des moules et des noyaux.
Barnett Kenneth W.
Carpenter William G.
Dunnavant William R.
Fechter Robert B.
Ashland Licensing And Intellectual Property Llc
Ashland Oil Inc.
Gowling Lafleur Henderson Llp
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