Carbondisulfide derived zwitterions
View Patent ↗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.
1. The mining collector of the following structure and its amine and metal salts:
Where A and E are independently chosen from —H, —CH3, —CH2CH3, —CH2CH2CH3, —CH2OH, —CH2OCS2H.
2. The mining collector and its amine and metal salts of claim 1 where A=E=—CH3.
3. The mining collector and its amine and metal salts of claim 1 where A=E=—CH2OH.
4. The mining collector and its amine and metal salts of claim 1 where A=E=—H.
5. The mining collector and its amine and metal salts of claim 1 where A=—CH2CH3 and E=—CH2OCS2H.
6. The mining collector of claim 1 that is a metal salt.
7. The mining collector of claim 1 that is an amine salt.
8. The mining collector and its amine and metal salts of claim 1 where A=—CH2CH3 and E=—H.
9. The mining collector and its amine and metal salts of claim 1 where A=E=—CH2OCS2H.