| abstract |
Process for preparing a casting form by the cold box process, comprising the following steps: a) forming a casting mixture with a binder and an aggregate, preferably sand, b) forming a casting form by introducing the mixture for foundry obtained in step (a) in a pattern, c) contacting the formed casting mixture with a curing catalyst system consisting essentially of a mixture of at least two tertiary amines that have reactivity to curing and / or difference odor, in liquid or preferably gaseous form, optionally carried out with an inert carrier, d) hardening the aggregate-resin mixture to give a hard, solid, cured form, e) removing the hardened casting form from the stage (d) of the pattern. |