Method for manufacturing heat-cured molded articles from cement
US4125497A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 1976 |
| Grant date | Nov 14, 1978 |
| Priority date | — |
| Expiry date | May 27, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B28/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An improved method of manufacturing shaped objects from cement wherein cement is wetted with an aqueous solution of an acetone-formaldehyde resin, optionally including a water-soluble alcohol, the wet mixture molded to the desired shape and then cured preferably at a temperature within the range of 30.degree. C to 100.degree. C, wherein the bending strength of the finished product is improved by incorporating a metal soap in the composite prior to molding the wet mixture. Also disclosed is an improved composition of matter comprising Portland cement, an acetone-formaldehyde resin and a metal soap, and optionally containing an inorganic aggregate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.