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US 2015/0174572 A1Published application
Polymerization of bis[3-(diethoxyphosphoryl)propyl]diallylammonium chloride
AssigneesKing Abdulaziz City for Science and Technology, King Fahd University of Petroleum and Minerals
InventorsShaikh Asrof ALI, Shamsuddeen Abdullahi HALADU, Hasan Ali AL-MUALLEM
Life of this patent
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Abstract
A symmetrically substituted cationic monomer and its corresponding cationic polyelectrolyte (CPE) (+) bearing two identical (diethoxyphosphoryl)propyl pendent groups on repeating pyrrolidinium units. Phosphonate ester hydrolysis in (CPE) (+) forms a pH-responsive cationic polyacid (CPA) (+). The (CPA) (+) is converted under pH-induced transformation into a polyzwitterion acid (±) (PZA) or a polyzwitterion/anion (±−) (PZAN) or a polyzwitterion/dianion (±=) (PZDAN) or a polyzwitterion/trianion (±≡) (PZTAN).
Claims15
1:
- A symmetrically substituted cationic monomer having the following formula:
- where R is a C1 to C6 alkyl group or a C6-C12 aryl group.
2:
- The cationic monomer of claim 1, wherein the alkyl group R is CH2CH3.
3:
- A cationic polyelectrolyte having the following formula:
- 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.
1 more element
4:
- The cationic polyelectrolyte of claim 3, wherein
- the alkyl group R is CH2CH3;
- and
- n is the number of repeating units in the range of 20-1,500.
1 more element
5:
- A cationic polyacid having the following formula:
- where n is an integer of 10 or greater.
6:
- The cationic polyacid of claim 5, wherein n is the number of repeating units in the range of 20-1,500.
7:
- A polyzwitterion acid polymer having the following formula:
- where n is an integer of 10 or greater.
8:
- The polyzwitterion acid of claim 7, wherein n is the number of repeating units in the range of 20-1,500.
9:
- A poly(zwitterion/anion) having the following formula:
- wherein n is an integer of 10 or greater.
10:
- The poly(zwitterion/anion) of claim 9, wherein n is the number of repeating units in the range of 20-1,500.
11:
- A poly(zwitterion/dianion) having the following formula:
- wherein n is an integer of 10 or greater.
12:
- The poly(zwitterion/dianion) of claim 11, wherein n is the number of repeating units in the range of 20-1,500.
13:
- A poly(zwitterion/trianion) having the following formula:
- wherein n is an integer of 10 or greater.
14:
- The poly(zwitterion/trianion) of claim 13 wherein n is the number of repeating units in the range of 20-1,500.
15:
- A process for antiscaling, comprising:
- contacting a composition comprising the polyzwitterion acid polymer of claim 7 with a surface comprising scale to remove the scale from the surface.