Patent · US Active

Biological buffers with wide buffering ranges

US7939659B2 · kind B2 · utility

5Cited by
10References
7Claims
0Family size

Inventor

Key dates

Filing dateOct 27, 2009
Grant dateMay 10, 2011
Priority date—
Expiry dateOct 27, 2029

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07C229/24
  • 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.