Hollow polymeric-alkaline earth metal oxide composite
US8894732B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2012 |
| Grant date | Nov 25, 2014 |
| Priority date | — |
| Expiry date | Aug 3, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249954
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention provides a plurality of polymeric particles embedded with alkaline-earth metal oxide. The gas-filled polymeric microelements have a shell and a density of 5 g/liter to 200 g/liter. The shell has an outer surface and a diameter of 5 μm to 200 μm with the outer surface of the shell of the gas-filled polymeric particles having alkaline-earth metal oxide-containing particles embedded in the polymer. The alkaline-earth metal oxide-containing particles have an average particle size of 0.01 to 3 μm distributed within each of the polymeric microelements to coat less than 50 percent of the outer surface of the polymeric microelements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.