Electromagnetic wave absorbing particle dispersoid and electromagnetic wave absorbing laminated transparent base material
US11533832B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2018 |
| Grant date | Dec 20, 2022 |
| Priority date | — |
| Expiry date | Jul 25, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2666/72
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An electromagnetic wave absorbing particle dispersoid is provided that includes at least electromagnetic wave absorbing particles and a thermoplastic resin, wherein the electromagnetic wave absorbing particles contain hexagonal tungsten bronze having oxygen deficiency, wherein the tungsten bronze is expressed by a general formula: MxWO3-y (where one or more elements M include at least one or more species selected from among K, Rb, and Cs, 0.15≤x≤0.33, and 0<y≤0.46), and wherein oxygen vacancy concentration NV in the electromagnetic wave absorbing particles is greater than or equal to 4.3×1014 cm−3 and less than or equal to 8.0×1021 cm−3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.