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US 2015/0246879 A1Published application
Carbondisulfide Derived Zwitterions
OwnerThomas P. Dalyinventor
Life of this patent
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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.
Claims21
A dispersant of the following structure:
- where A and D are independently chosen from —CH3, —CH2CH3, —CH2CH2CH3, —CH2OH.
A dispersant of the following structure:
- where A, D and E are independently chosen from —H, —CH3, —CH2CH3, —CH2CH2CH3, —CH2OH, where R is alkyl, alkenyl, alkynal, branched or linear, saturated or unsaturated.
17-18. (canceled)
A dispersant and its salts of the following structure:
- where A is chosen from —H, —CH3, —CH2CH3, —CH2CH2CH3, —CH2OH, and D is chosen from —CH3, —CH2CH3, —CH2CH2CH3, —CH2OH.
Dependencies are inferred from the claim text.