Porous ceramic processing using a co-prilled wax and non-ionic surfactant mixture
US8894895B2 · kind B2 · utility
3Cited by
26References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 18, 2011 |
| Grant date | Nov 25, 2014 |
| Priority date | — |
| Expiry date | Aug 22, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11B15/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This disclosure is directed to porous ceramic processing; and in particular to a method using selected pore forming materials to avoid high exotherms during the ceramic firing process, and the green bodies formed using the selected pore forming materials. The selected pore forming materials are homogeneous wax/non-ionic surfactant particles formed by a prilling process in which the wax is melted and the non-ionic surfactant is mixed into the wax prior to prilling. The disclosure is useful in the manufacture porous ceramic honeycomb bodies including ceramic honeycomb filter traps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.