Synthesis of acrylate and alkyl acrylate monomers and polymers of chelators
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsDhananjay B. Puranik, Eddie L. Chang
Life of this patent
Estimating the term…
Abstract
Multifunctional chelating groups are covalently bound to acrylate or methylate monomers. These monomers are polymerized. The resulting polymers are highly substituted with chelating groups and are useful for removing metals from fluids such as liquid hydrocarbons. An example of a polymer according to this invention has the following structure: ##STR1## wherein Q is a saturated or unsaturated aliphatic group having 1 to about 200 carbon atoms and is typically an unsubstituted unbranched alkylene, a substituted unbranched alkylene, a substituted branched alkylene, or an unsubstituted branched alkylene, and is an integer having a value of at least 1.
Claims6
A method of making a polymer having chelating groups covalently bound thereto, comprising the steps of:
- reacting a first compound, said first compound having the structure:
- ##STR5## with a second compound, said second compound having the structure:
- ##STR6## to produce a third compound having the structure:
- ##STR7## reacting said third compound with a multifunctional chelator, EH, to produce a monomer having the structure:
- ##STR8## polymerizing said monomer to provide a polymer having the structure:
- ##STR9## wherein X is selected from the group consisting of halide, acetate, brosylate, tosylate, nosylate, azide, nitrate, and carbonate:
- Z is selected from the group consisting of halide, acetate, brosylate, tosylate, nosylate, azide, nitrate, and carbonate:
- E is a multifunctional chelating group having at least two coordination sites, each coordination site being a heteroatom joined to a neighboring coordination site by an alkylene bridge of about 1 to about 100 carbon atoms;
- L is oxygen, nitrogen, or sulfur;
- Q is an aliphatic group having 1 to about 200 carbon atoms;
- i is an integer having a value sufficient to provide electrical neutrality;
- R is hydrogen, an unsubstituted unbranched hydrocarbon group, an unsubstituted branched hydrocarbon group, a substituted unbranched hydrocarbon group, or a substituted branched hydrocarbon group, and n is an integer having a value of at least one.
Dependencies are inferred from the claim text.