Circumference coating material, bonding material, honeycomb structure, and method of producing honeycomb structure
US10472527B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2016 |
| Grant date | Nov 12, 2019 |
| Priority date | — |
| Expiry date | Nov 17, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2330/06
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The circumference coating material fills a recessed groove that is formed on a circumferential surface of a honeycomb fired body and extends an axial direction at which a part of cells are opened to the outside and to cover the circumferential surface, thereby forming a circumferential wall on the circumferential surface of a honeycomb structure, and the circumference coating material includes colloidal silica in a part of raw materials to be used and has a chlorine concentration of 150 ppm or less. In addition, the colloidal silica to be used has a chlorine concentration of 500 ppm or less, and the colloidal silica is produced using at least any one acid of sulfuric acid, phosphoric acid, and organic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.