Reversible polymer gel binders for powder forming
US5602197A · kind A · utility
42Cited by
9References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1992 |
| Grant date | Feb 11, 1997 |
| Priority date | — |
| Expiry date | Nov 25, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/05
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Thermoplastic binder compositions comprising a high molecular weight polymer component and a molten wax component are compounded with sinterable ceramic or other inorganic powders. Upon cooling, a thermally reversible gel is formed in the binder by the gelation of the polymer in the molten wax. Ceramic batches comprising these binders behave as shear-thinning and thermally reversible gels. They exhibit substantially improved dewaxing performance and, preferably, extensibility sufficient for sheet reforming processes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.