Metal founding – Process – Shaping a forming surface
Patent
1989-02-09
1991-01-08
Seidel, Richard K.
Metal founding
Process
Shaping a forming surface
523145, B22C 1122
Patent
active
049827812
ABSTRACT:
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.
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Carpenter William G.
Dunnavant William R.
Ashland Oil Inc.
Hedden David L.
Seidel Richard K.
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