Infrared attenuation agent blends
US11499026B2 · kind B2 · utility
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5References
11Claims
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Key dates
| Filing date | Jan 28, 2021 |
| Grant date | Nov 15, 2022 |
| Priority date | — |
| Expiry date | Jan 28, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04B2001/7691
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Inorganic infrared attenuation agent blends have been developed to improve the thermal insulation properties of polymeric foams such as polystyrene low density foams. The inorganic infrared attenuation agent blends can include two or more metal oxides such as silicon dioxide, manganese (IV) oxide, iron (III) oxide, magnesium oxide, bismuth (III) oxide, cobalt oxide, zirconium (IV) oxide, molybdenum (III) oxide, titanium oxide, and calcium oxide. In some preferred embodiments, the inorganic infrared attenuation agent blends can include four or more of these metal oxides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.