Abstract: A lubricant-containing binder for the dry hot coat foundry method comprising a solid resol type phenolic resin and a lubricant in an amount of about 0.5 to 10 percent by weight with respect to said phenolic resin.

Abstract: This invention relates to a solid phenolic resin composition useful as a binder in the preparation of foundry sand cores and molds which comprises a solid novolac resin and a lubricant-containing solid resole resin wherein the lubricant is incorporated into the resole during the preparation of the solid resole. In a preferred binder composition, the resole component of the binder is prepared in the presence of an alkali metal catalyst and an amine catalyst. The invention also includes the process for preparing sand containing foundry cores and molds from the preferred binder composition and the sand foundry core and mold products of said process.

Abstract: A lubricant-containing binder for the dry hot coat foundry method comprising a solid resol type phenolic resin and a lubricant in an amount of about 0.5 to 10 percent by weight with respect to said phenolic resin.

Abstract: This invention relates to resin-coated sand compositions useful in the preparation of foundry sand cores and molds comprising sand, a solid novalac resin, a lubricant-containing solid resole resin, and optionally, hexamethylenetetramine in an amount of up to about 5 parts by weight based on 100 parts by weight of the total amount of resin.

Abstract: Plugging compositions for blast furnace tap holes comprising a refractory filler, a wetting agent, and a binder therefor comprising a phenol-aldehyde condensate resin chemically modified by reaction with lignin have a muddy consistancy, and are characterized by enhanced compressive strength at elevated temperatures and increased plasticity at low temperatures as compared to conventional binders.

Abstract: A cold-curing binder for foundry sand cores and molds comprises (a) an oil-modified alkyd resin, said resin characterized by an oil component which comprises a mixture of tall oil fatty acid and linseed oil in the ratio of from about 20:80 to about 80:20 parts by weight, (b) a polyisocyanate component, and (c) a curing accelerator. The novel binders of this invention generate less objectionable odor during the casting operation and cure more rapidly than conventional binders.

Abstract: Solid refractory compositions comprising an inorganic particulate refractory material and a carbonaceous binder therefor comprising a substantially carbonized phenol-aldehyde condensate resin chemically modified by reaction with lignin and/or molasses. The refractory compositions of the invention are characterized by an enhanced bending strength even at extreme temperatures and a desirable diminished porosity compared to comparable refractory compositions having carbonaceous binders derived from conventional phenol-aldehyde resins.

Abstract: This invention relates to a process for manufacturing a shaped active carbon by using a one step phenol-formaldehyde resin, a modified phenol-formaldehyde resin or a mixture thereof as a binder. By this method, a shaped active carbon can be obtained having increased mechanical strength without deterioration of the adsorption capacity.