Infrared attenuation agent blends
US11780980B2 · kind B2 · utility
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Key dates
| Filing date | Nov 1, 2022 |
| Grant date | Oct 10, 2023 |
| Priority date | — |
| Expiry date | Nov 1, 2042 |
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.