Colloidal size hydrophobic polymer particulate having discrete particles of a metal dispersed therein
US4609608A · kind A · utility
61Cited by
1References
13Claims
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Key dates
| Filing date | Feb 15, 1985 |
| Grant date | Sep 2, 1986 |
| Priority date | — |
| Expiry date | Feb 15, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/80
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Colloidal size particles of a non-oxidized metal (e.g., iron or silver) are encapsulated in a hydrophobic polymer (e.g., a copolymer of styrene and butylacrylate) by a polymerization process wherein a water-immiscible monomer is dispersed in an aqueous colloidal dispersion of preformed metal particles and subjected to conditions of emulsion polymerization. The resulting encapsulated non-oxidized metal particles are usefully employed as electrically resistive barriers, toners, electroconductive additives and as pressure sensors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.