Carbondisulfide derived zwitterions
US10696628B2 · kind B2 · utility
2Cited by
9References
3Claims
0Family size
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Inventor
Key dates
| Filing date | Apr 12, 2019 |
| Grant date | Jun 30, 2020 |
| Priority date | — |
| Expiry date | Apr 12, 2039 |
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.