Synthesis and antiscalant behavior of a novel polyzwitterionic acid
AssigneesKing Fahd University of Petroleum and Minerals, King Abdulaziz City for Science and Technology
InventorsShaikh Asrof Ali, Shamsuddeen Abdullahi Haladu
Life of this patent
Estimating the term…
Abstract
A zwitterionic monomer and corresponding cyclopolymerized polyzwitterion (±) (PZ) containing, on each repeating unit, both phosphonate and sulfonate functionalities. Phosphonate ester hydrolysis in PZ gave a pH-responsive polyzwitterionic acid (±) (PZA). The PZA under pH-induced transformation was converted into polyzwitterion/anion (±−) (PZAN) and polyzwitterion/dianion (±=) (PZDAN).
Claims11
A zwitterionic monomer having the following formula (4):
- where R is a C1 to C6 alkyl group or C6-C12 aryl group.
A polyzwitterion having the following formula (5):
- where R is a C1 to C6 alkyl group or a C6-C12 aryl group;
- and
- where n is an integer of 10 or greater.
A polyzwitterionic acid having the following formula (6):
- where n is an integer of 10 or greater.
A poly(zwitterion/anion) having the following formula (7):
- where n is an integer of 10 or greater.
A poly(zwitterion/dianion) having the following formula (8):
- where n is an integer of 10 or greater.
Dependencies are inferred from the claim text.