Aqueous binder formulation for metal and ceramic feedstock for injection molding and aqueous coating composition
US7517400B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Oct 20, 2005 |
| Grant date | Apr 14, 2009 |
| Priority date | — |
| Expiry date | Jan 19, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D189/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Low cost water based binder system was developed for shaping ferrous, nonferrous metals and/or ceramics parts by injection molding processes. The process comprises the steps of preparing a mixture containing a gel-forming powder comprising carrageenan, metal and/or ceramic powders, de-ionized water and a gel-strengthening additive. The mixture is injection molded to produce self-supporting articles. The present invention provides a direct compounding and molding of metal and/or ceramic feedstock. Additionally, a coating composition comprising gelatine, water and a metal and/or ceramic powder is used to form coating layers on selected materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.