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polyurethane in spain bindersystem with 2,2 '- dipyridyl, 1.10 - phenanthrolin replaced: and their alkyl derivatives.
polyurethane in spain bindersystem with 2,2 '- dipyridyl, 1.10 - phenanthrolin replaced: and their alkyl derivatives.
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机译:西班牙粘合剂体系中的聚氨酯,已替换为2,2'-二吡啶基,1.10-菲咯啉:及其烷基衍生物。
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摘要
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 derivatives. 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.
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