Method for preparing a microencapsulated compound of a platinum group metal
US4784879A · kind A · utility
115Cited by
18References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 20, 1987 |
| Grant date | Nov 15, 1988 |
| Priority date | — |
| Expiry date | Jul 20, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2987
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Compounds of metals from the platinum group of the periodic table compounds are encapsulated within a thermoplastic organic polymer using known prior art techniques. The presence of trace amounts of the encapsulated compound on the surface of the microcapsules is avoided by preparing the microcapsules by in-situ polymerization or precipitation of the encapsulant, followed by washing of the microcapsules with a solvent for the encapsulated compound that will not dissolve or swell the encapsulating polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.