Organic infrared attenuation agents
US10519290B2 · kind B2 · utility
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29References
17Claims
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Key dates
| Filing date | Apr 3, 2018 |
| Grant date | Dec 31, 2019 |
| Priority date | — |
| Expiry date | Apr 3, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2495/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Organic infrared attenuation agents have been developed to improve the thermal insulation properties of polymeric foams such as polystyrene low density foams. The organic infrared attenuation agents can include polyols such as sorbitol, maltitol, and poly(ethylene glycol), polysaccharides such as starch or cellulose, and infrared attenuation polyesters such as polybutylene terephthalate. The organic attenuation agents include aromatic compounds or carbon oxygen bonds that are effective in absorbing infrared radiation at the desired wavelengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.