Carbondisulfide derived zwitterions
US12344574B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | Aug 14, 2023 |
| Grant date | Jul 1, 2025 |
| Priority date | — |
| Expiry date | Nov 19, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A30/30
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Amines and amine derivatives that improve the buffering range, and/or reduce the chelation and other negative interactions of the buffer and the system to be buffered. The reaction of amines or polyamines with various molecules to form polyamines with differing pKa's will extend the buffering range, derivatives that result in polyamines that have the same pKa yields a greater buffering capacity. Derivatives that result in zwitterionic buffers improve yield by allowing a greater range of stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.