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US 11,746,191 B2Granted
Polymers for selective heavy metal removal
AssigneeMassachusetts Institute of Technology
InventorsTimothy M. Swager, Wen J. Ong
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Abstract
Disclosed are cross-linked polymers comprising a monomer, a cross-linker, and a sulfur moiety in the polymer backbone. Methods of making cross-linked polymers comprising a monomer, a cross-linker, and a sulfur moieity in the polymer backbone are disclosed. A metal complex, comprising a cross-linked polymer chelated to a toxic heavy metal atom or ion is disclosed. The disclosure provides a method of toxic heavy metal remediation using the cross-linked polymers. Also provided are articles and coatings comprising the disclosed cross-linked polymers.
Claims19
A cross-linked polymer, comprising:
- a plurality of first monomers, a plurality of first cross-linkers, and a plurality of sulfur moieties in the polymer backbone, wherein:
- the first monomer is selected from the group consisting of an oligo(methylene sulfide), a poly(methylene sulfide), an oligo(ethylene sulfide), a poly(ethylene sulfide), an oligo(propylene sulfide), and a poly(propylene sulfide;
- and
- the first cross-linker comprises at least two reactive groups selected from the group consisting of an acrylate, an alkene, an alkyne, an azide, a halide, a tosylate, a mesylate, a triflate, an epoxide, and a thiol.
1 more element
Dependencies are inferred from the claim text.