Production of solid phosphorus pentioxide containing materials for fast-setting cements
US4755227A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1985 |
| Grant date | Jul 5, 1988 |
| Priority date | — |
| Expiry date | Oct 17, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B28/348
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A solid phosphorus pentoxide containing material suitable for use in fast-setting cements can be produced by a process which comprises mixing a porous material with a liquid, phosphorus pentoxide containing material and heating the mixture until a dry solid is produced. The solid phosphorus pentoxide containing material thus formed can then be dry blended with a solid component comprising magnesium oxide, magnesium hydroxide, magnesium carbonate or mixtures thereof. An aggregate can optionally be added into this dry blend. The components of the resulting dry blend react in the presence of an aqueous component to form a monolithic solid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.