Ashland Oil, Inc.

Ashland, Inc.

William G Carpenter

William R Dunnavant

Robert Bernard Fechter

Colleen Marie Henry

Kenneth W Barnett

This invention relates to foundry mixes which comprise a dry foundry aggregate and a polyurethane-forming foundry binder. The binder components include a polyether polyol component and an organic polyisocyanate component which is cured with a liquid tertiary amine catalyst. The foundry mixes are used to prepare foundry shapes made from foundry mixes by a no-bake process. The resulting foundry shapes are used to cast metal parts from ferrous and non ferrous metals.

Foundry mixes containing a polyether polyol and their use

This invention relates to polyurethane-forming foundry binder systems which contain a nitrogen-containing aromatic compound selected from the group consisting of 2,2'-dipyridyl, 1,10-phenanthroline, and their substituted alkyl derivatives. The foundry binder systems are particularly useful for making foundry mixes used in the cold-box fabrication process for making foundry shapes. However, the binders systems can also be used to hold foundry shapes, such as molds and cores, together in an assembly.

Polyurethane-forming binder systems containing 2,2'-dipyridyl,

Certain polyether polyols are used in polyurethane-forming binders to improve the shakeout of molds and cores, made by cold-box and no-bake processes. Such molds and cores are used to make metal castings, particularly from low melting metals such as aluminum.

Polyurethane-forming foundry binders containing a polyether polyol

The invention relates to a process for filling space in a structure with a polyurethane composite in the presence of water which comprises adding a coarse aggregate and certain polyurethane binders to the space of the structure to be filled. The process is particularly useful for filling space in roads, runways, and other structures made of asphalt, concrete, or similar building materials.

Process for filling space in a structure with a polyurethane composite

This invention relates to a no-bake process for preparing foundry shapes which utilizes polyurethane-forming binders containing selected polyester polyols. The resulting foundry shapes are particularly useful in preparing castings from low melting metals.

No-bake process for preparing foundry shapes for casting low melting

Certain polyester polyols are used in polyurethane-forming binders to improve the shakeout of molds and cores, made by a cold-box process, used to make low melting metal castings.

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Powell, OH, United States of America

William G Carpenter