Polymerizable sulfonate ionic liquids and liquid polymers therefrom and methods of making same
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsHolly L Ricks-Laskoski, Arthur W Snow
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Abstract
Disclosed is a new ionic liquid monomer salt and methods of is synthesis and polymerization. The ionic liquid monomer salt is prepared by mixing equimolar amounts of an amine, such as tris[2-(2-methoxyethoxy)-ethyl]amine and an acid functionalized polymerizable monomer, such as 2-acrylamido-2-methyl-1-propanesulfonic acid, which is stirred at ambient temperature until salt formation is complete. Also disclosed is a new ionic liquid polymer salts and method for making the same. The synthesis of 2-acrylamido-2-methyl-1-propanesulfonic acid-ammonium salt polymer is accomplished by adding 2,2′-azobisisobutyronitrile (AIBN) to the ionic liquid monomer salt and heating the homogeneous melt at 70° C. for 18 hr.
Claims1
An ionic liquid polymer salt having the formula:
- wherein m>1;
- wherein R is selected from:
- —(CH2CH2O)nCH3 where n=1 to 4, or
- —(CH2)3(Si(CH3)2O)nCH3 where n=1 to 6, or
- —(CF2)nCF3 or —CH2(CF2)nCF3 where n=1 to 8;
- and
- wherein R′ and R″ are each independently selected from:
- —H, or
- —(CH2CH2O)nCH3 where n=1 to 4, or
- —(CH2)3(Si(CH3)2O)nCH3 where n=1 to 6, or
- —(CF2)—CF3 or —CH2(CF2)nCF3 where n=1 to 8.
Dependencies are inferred from the claim text.