초록

A binder composition comprising aluminum phosphate, water, material containing an alkaline earth metal and an oxide, and certain solid polyhydric alcohols.

대표청구항 ▼

Binder composition which comprises: (A) aluminum phosphate containing from 0 up to about 40 mole % of boron based upon the moles of aluminum and containing a mole ratio of phosphorus to total moles of aluminum and boron of about 2:1 to about 4:1; (B) nonpolymeric normally solid polyhydric alcohol s

Binder composition which comprises: (A) aluminum phosphate containing from 0 up to about 40 mole % of boron based upon the moles of aluminum and containing a mole ratio of phosphorus to total moles of aluminum and boron of about 2:1 to about 4:1; (B) nonpolymeric normally solid polyhydric alcohol soluble in aqueous solutions of the aluminum phosphate, and containing at least 2 adjacent carbon atoms each having directly attached thereto one alcoholic hydroxyl group; and keto tautomers thereof; (C) oxygen-containing alkaline earth metal compound containing alkaline earth metal and an oxide, and capable of reacting with the aluminum phosphate; wherein said alkaline earth metal compound includes a free alkaline earth metal oxide or a free alkaline earth metal hydroxide and wherein said oxide or hydroxide has a surface area no greater than about 8.5 m2/gram (measured by the BET procedure); and (D) water; wherein the amount of aluminum phosphate is from about 50 to about 95% by weight based upon the total weight of aluminum phosphate and alkaline earth metal compound; the amount of alkaline earth metal compound is from about 50 to about 5% by weight based upon the total weight of aluminum phosphate and alkaline earth metal compound, the amount of water is from about 15 to about 50% by weight based upon the total weight of aluminum phosphate and water; and the amount of said alcohol is from about 0.5 to about 25% by weight based upon the total weight of aluminum phosphate and alcohol.