Solvent medium for diazotization reaction
US9926263B2 · kind B2 · utility
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Key dates
| Filing date | Jun 25, 2014 |
| Grant date | Mar 27, 2018 |
| Priority date | — |
| Expiry date | Jun 25, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K3/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A solvent medium for diazotization reaction includes a mixed solution of polyethylene glycol and water. The molecular weight of polyethylene glycol is 200-600, and the volume ratio of polyethylene glycol and water is 1:0.4-1.5. The mixed solution also includes hydrochloric acid or sulfuric acid, and the concentration of H+ in the mixed solution is 0.32-1.72 mol L−1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.