Abstract: The present inventions provide a method for forming molds and a core which generates no gases with bad effects on the human bodies while the binders are heated. In particular, the present inventions provide a method for forming molds and a core comprising an aggregate material mixture consisting of granular aggregate materials, wherein the aqueous binders and water are foamed with stirring, filled into a space for forming molds, and caked with an evaporating water component. In an embodiment, molds can be further cured by adding cross linking agents before and after they are taken out from the space for forming. Further, an aggregate material mixture for forming molds used for the method for forming molds of the present inventions is provided.

Abstract: A binder, a composition, a product and a kit, as well as a process for preparing the binder and composition, are directed to a composition useful as an inorganic phosphate binder, which binder is characterized as having calcium silicate sites which are connected the one with the other by alumina-silica phosphate bonds, and a filler.

Abstract: The present invention is directed to processes for forming styrenic polymers, and their related end uses. In particular, the present invention is directed to processes for preparing patterns for use in metal castings.

Abstract: The evaporative casting of molten metals has been shown to produce castings having smooth surfaces with significantly less signs of carbon deposits thereon by using an expandable vinyl aromatic polymer containing a bromine-attached aliphatic or aromatic flame retardant.

Abstract: The present invention pertains to a process for preparing ceramic shells as casting molds, wherein a) a pattern of a part to be cast, which pattern can be melted or dissolved out, is prepared, b) the pattern is dipped into a dip-coating composition of a slurry of a refractory material and a binder in order to form a wet coating on the pattern, c) a coarse refractory powder is sprinkled onto the coating, d) the coating is dried, and e) steps b), c) and d) are repeated until the mold shell has reached the desired thickness. A ceramic protective material is added to the dip-coating composition and/or to the coarse refractory powder. Carbon is introduced into the ceramic protective material during the preparation in the molten state. The carbon is able to chemically bind oxygen at the time of the cooling of the casting essentially at mold temperatures above the firing temperature of the casting mold and is thus able to prevent skin decarburization and surface defects in carbon-containing steels.