Amorphous refractory compositions
US4220474A · kind A · utility
3Cited by
4References
6Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jan 5, 1979 |
| Grant date | Sep 2, 1980 |
| Priority date | — |
| Expiry date | Jan 5, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/9676
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An amorphous refractory composition comprising a petroleum-derived binder prepared by feeding a fraction boiling at not lower than 150.degree. C. obtained by thermal or steam cracking of petroleum-derived hydrocarbons, into a first-step agitating vessel where the fraction is heat treated under specific conditions, feeding the thus heat treated fraction into a second-step agitating vessel where it is heat treated under specific conditions and then removing the light fraction from the further heat treated fraction thereby to obtain the petroleum-derived binder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.