Metal founding – Process – Shaping a forming surface
Patent
1985-01-11
1986-07-29
Hayes, Lorenzo B.
Metal founding
Process
Shaping a forming surface
106 383, 106 3835, 164 72, 164 12, 164 24, 164 34, 164 39, 164528, B22C 900
Patent
active
046026673
ABSTRACT:
Binder, filler, and refractory compositions and methods of using and making these compositions are disclosed. The binder composition comprises colloidal silica, a liquid material containing Si--OH groups, a solvent which is capable of solubilizing the liquid material and the colloidal silica, and at least one aprotic, non-ionic, non-metallic, organic compound which contains at least one element selected from phosphorus, sulfur, boron and nitrogen and which stabilizes the binder composition against self-gelling. The liquid material and the colloidal silica are present in a ratio by weight of from about 10:1 to about 1:10 respectively. The liquid material has at least about 20% by weight SiO.sub.2. The colloidal silica contains at least about 15% by weight SiO.sub.2. The solvent and the organic compound are present in amounts so as to solubilize the liquid material and the colloidal silica, to provide a binder composition which is stable against self-gellation, and to provide a binder composition which gels to a single phase.
REFERENCES:
patent: 2842445 (1956-01-01), Emblem et al.
patent: 3257328 (1966-06-01), Vessey et al.
patent: 3576652 (1971-04-01), Teicher et al.
patent: 3682668 (1972-08-01), Fujita et al.
patent: 3961968 (1976-06-01), Wales
patent: 4201594 (1980-05-01), Walters et al.
patent: 4204872 (1980-05-01), Hayati et al.
patent: 4289803 (1981-09-01), Wales et al.
Maybaum Stephen
Moore John R.
Harborchem, Inc.
Hayes Lorenzo B.
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