Malachite green based radio-chromic compounds and radiation sensing systems incorporating the compounds
US11920039B2 · kind B2 · utility
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Key dates
| Filing date | Jan 29, 2020 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | Dec 26, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Derivatized malachite green leuco dyes for use in radio-chromic systems are described. The dyes have the following structure: in which Ar is a substituted phenyl or thiophene ring in which at least one substitution of the Ar ring is not ortho to the bond between the ring and the linking carbon, and in which R1, R2, R3, and R4 are independently selected from methyl, alkyl, or alkyl halide. The systems include the dyes in conjunction with an activator, e.g., a halogenated activator, and a carrier, e.g., a fluid carrier or an encapsulating polymeric matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.