US2015246879A1PendingUtilityA1
Carbondisulfide Derived Zwitterions
Individually held — no corporate assignee on recordPriority: Feb 28, 2014Filed: Jul 30, 2014Published: Sep 3, 2015
Est. expiryFeb 28, 2034(~7.6 yrs left)· nominal 20-yr term from priority
Inventors:Thomas Daly
C07C 333/14C07D 401/04A01N 43/54B60R 2021/01272B60R 2021/01211F42B 3/04A01N 25/30B60R 21/272B60R 21/0132C06D 5/02
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Claims
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
exact text as granted — not AI-modified1 . A dispersant of the following structure:
where A and D are independently chosen from —CH 3 , —CH 2 CH 3 , —CH 2 CH 2 CH 3 , —CH 2 OH.
2 . The dispersant of claim 1 where A=D=—CH 3 .
3 . The sodium salt of the dispersant of claim 1 where A=D=—CH 3 .
4 . The potassium salt of the dispersant of claim 1 where A=D=—CH 3 .
5 . The dicocomethyl amine (Akzo Armeen M2C or equivelent) salt of the dispersant of claim 1 where A=D=—CH 3 .
6 . The dispersant of claim 1 where A=D−CH 2 OH.
7 . The sodium salt of the dispersant of claim 1 where A=D=—CH 2 OH.
8 . The potassium salt of the dispersant of claim 1 where A=D=—CH 2 OH.
9 . The dicocomethyl amine (Akzo Armeen M2C or equivelent) salt of the dispersant of claim 1 where A=D=—CH 2 OH.
10 . A dispersant of the following structure:
where A, D and E are independently chosen from —H, —CH 3 , —CH 2 CH 3 , —CH 2 CH 2 CH 3 , —CH 2 OH, where R is alkyl, alkenyl, alkynal, branched or linear, saturated or unsaturated.
11 . The dispersant of claim 10 where A=—CH 2 OH, D=E=—CH 3 .
12 . The sodium salt of the dispersant of claim 10 where A=—CH 2 OH, D=E=—CH 3 .
13 . The potassium salt of the dispersant of claim 10 where A=—CH 2 OH, D=E=—CH 3 .
14 . The dispersant of claim 10 where A=D=E=—CH 2 OH.
15 . The sodium salt of the dispersant of claim 10 where A=D=E=—CH 2 OH.
16 . The potassium salt of the dispersant of claim 10 where A=D=E=—CH 2 OH.
17 - 18 . (canceled)
19 . The dispersant of claim 1 where A=—CH 2 CH 3 , and D=—CH 2 OH.
20 . A dispersant and its salts of the following structure:
where A is chosen from —H, —CH 3 , —CH 2 CH 3 , —CH 2 CH 2 CH 3 , —CH 2 OH, and D is chosen from —CH 3 , —CH 2 CH 3 , —CH 2 CH 2 CH 3 , —CH 2 OH.
21 . The dispersant of claim 20 where A=—H and D=—CH 2 CH 3 .
22 . The sodium salt of the dispersant of claim 20 where A=—H and D=—CH 2 CH 3 .Join the waitlist — get patent alerts
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