IP Library Granted Patent US 7,939,659
Granted Patent B2
US 7,939,659 · App. 12/606,762 · Granted May 10, 2011

Biological buffers with wide buffering ranges

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Quick Facts
Patent No.
US 7,939,659
App. No.
12/606,762
Granted
May 10, 2011
Kind
B2
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.

Claims (10)

1. A biological buffer of the following structure:

2. A surfactant of the following structure:

where R is a linear or branched, saturated or unsaturated hydrocarbon of from 6 to 22 carbons, and J and L are independently chosen from —CH 3 or —CH 2 CH 3 .

3. The surfactant of claim 2 where R=—C 12 H 25 and J=L=—CH 3 .

4. A biological buffer of the following structure:

Wherein A, D, and E are the same or different and are independently chosen from the group containing: —CH 2 OH, —CH 3 , —CH 2 CH 3 .

5. A biological buffer of the following structure:

Wherein A and D are the same or different and are independently chosen from the group containing: —H, —CH 2 OH, —CH 3 , —CH 2 CH 3 .

6. The biological Buffer of claim 4 where A, D, and E are all —CH 2 OH.

7. The biological buffer of claim 4 where A and D are —CH 3 and E is —CH 2 OH.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 4, 2020
From: DALY, THOMAS P.
To: TPAT IP LLC
Reel/Frame 052006/0065 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 19, 2015
From: DALY, THOMAS P.
To: TPAT IP LLC
Reel/Frame 037094/0016 →