POLYURETHANE-FORMING BINDER SYSTEMS CONTAINING 2,2'-DIPYRIDYL, 1,10-PHENANTHROLINE, AND THEIR SUBSTITUTED ALKYL DERIVATIVES

摘要

This invention relates to polyurethane-forming foundry binder systems whichcontain a nitrogen-containing aromatic compoundselected from the group consisting of 2,2'-dipyridyl, 1,10-phenanthroline, andtheir substituted alkyl derivates. The foundry binder systemsare particularly useful for making foundry mixes used in the cold-boxfabrication process for making foundry shapes. However, the binderssystems can also be used to hold foundry shapes, such as molds and cores,together in an assembly.