Binder and refractory compositions and methods
US4530722A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 1983 |
| Grant date | Jul 23, 1985 |
| Priority date | — |
| Expiry date | Aug 22, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C1/183
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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 P, S, B and N 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.