Solar reflective granules and processes for producing same
US11846098B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 24, 2020 |
| Grant date | Dec 19, 2023 |
| Priority date | — |
| Expiry date | May 5, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B80/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A reflective particulate material includes a particulate substrate having high total solar reflectance, bulk and apparent densities and toughness, and a low dust index. The reflective particulate can have a total solar reflectance of 80% to 87%, a toughness of 1% or fewer fines, an apparent density of 2.75 g/cm3 or greater, and a dust index of 1 or lower. A method of manufacturing the reflective particulate material includes preparing a slurry of the particulate substrate, spray drying the slurry to form a spray dried particulate, crushing the spray dried particulate to form a crushed particulate, and heating/calcining the crushed particulate. The heated, crushed particulate may further be coated to form a coated roofing granule.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.