Methods of producing ceramic honeycomb structures
US4996015A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 1989 |
| Grant date | Feb 26, 1991 |
| Priority date | — |
| Expiry date | May 16, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/638
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of producing ceramic honeycomb structures which comprises: the first step of preparing a ceramic plastic composition which comprises admixing and kneading a ceramic material with water, a polyalkylene glycol monoether and an organic binder; the second step of extruding the ceramic plastic composition into a wet green mold of a honeycomb structure having openings extending therethrough; the third step of passing a high humidity air through the openings to evaporate the substantial amount of the water in the green mold; the fourth step of passing heated air to evaporate the substantial amount of the polyalkylene glycol monoether from the green mold; and the fifth step of calcining the mold. The method is suitably applicable to the production of ceramic honeycomb structures as a catalyst structure or a catalyst carrier structure therefor which contains a material acting as an oxidation catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.