Method of making cordierite bodies
US5429779A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1994 |
| Grant date | Jul 4, 1995 |
| Priority date | — |
| Expiry date | Jan 12, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/195
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a process of forming cordierite-containing bodies, the water absorption capability or shrinkage of the bodies is controlled using the alumina-yielding ingredients. The process of controlling the water absorption capability or shrinkage includes the steps of providing alumina-yielding ingredients in the form of two aluminas having different particle sizes, wherein the ratio of the two particle sizes is in the range of from about 3:1 to 30:1 or 1:3 to 1:30. Next, a linear relationship between the cordierite-containing body's water absorption capability or shrinkage and the relative percentage of the alumina-yielding ingredients made up by the two aluminas is determined. After determining the linear relationship, a water absorption capability or shrinkage of the cordierite-containing body is selected in accordance with that relationship by adjusting the relative percentages of the two aluminas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.