Methods of forming a porous ceramic shaped article and porous ceramic products
US10632231B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2015 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Apr 24, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/00836
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for making a porous, chemically bonded ceramic shaped article comprises i) providing a precursor powder mixture comprising polymer particles and a ceramic self-setting cementitious powder; ii) preparing a shaped article from a paste comprising the precursor powder mixture and an aqueous liquid; and iii) immersing the shaped article in an immersing liquid in which the polymer particles are soluble, for a period of time of from about 10 minutes to about two weeks to dissolve the polymer particles in the immersing liquid, thereby creating pores in the shaped article. A porous, chemically bonded ceramic shaped article having interconnected pores, a total porosity of at least about 50%, and a macroporosity of at least about 30% can be formed by such methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.