FIRST DECISION ON THE COMPOSITION OF FEDERAL TRANSITIONS.

摘要

This invention relates to refractory coatings and their use. The refractory coating comprises: (1) a carrier, generally water; (2) an alpha alumina monohydrate; (3) an aluminum hydroxyhalide; and (4) a refractory material. The refractory coatings are used for coating patterns which are used to make refractory shells.