Patent · US Active

Carbondisulfide derived zwitterions

US9676709B2 · kind B2 · utility

3Cited by
7References
9Claims
0Family size

Inventor

Key dates

Filing dateJan 19, 2017
Grant dateJun 13, 2017
Priority date—
Expiry dateJan 19, 2037

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.