| abstract |
The disclosed subject matter relates to an inorganic binder composition of a no-baking for bonding particulate matter and methods for curing such inorganic binders. The inorganic binder compositions are composed of silicate and phosphate components. In addition, no-baking compositions may be used to cure a catalyst such as a catalyst selected from the group consisting of aliphatic carbonates, cyclic alkylene carbonates, aliphatic carboxylic acid esters, cyclic carboxylic acid esters, phosphate esters, and mixtures thereof. It includes more. The composition produces a binder having the beneficial strength properties of the silicate binder system with the water breaking properties of the phosphate binder system. Thus, compared to all silicate binder systems, the present invention has improved mechanical shakeout and improved water disintegration. In addition, compared to all phosphate binder systems, the present invention has excellent thermal strength, for example, casting cores and molds do not soften at elevated temperatures. The method of making and using the binder composition and the resultant is particularly interesting in the casting industry. |