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US 11,883,791 B2Granted
Polymeric beads
AssigneeDdp Specialty Electronic Materials US, LLC
InventorDaryl J. Gisch
Life of this patent
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Abstract
Provided is an anion exchange composition comprising (a) polymeric beads having covalently bound amine groups, and (b) tin(II) oxide.
Claims10
An anion exchange composition comprising
- (a) polymeric beads having covalently bound amine groups, and
- (b) tin(II) oxide;
- wherein 90% or more by weight of the tin(II) oxide, based on total weight of tin(II) oxide, is present inside the polymeric beads and tin(II) oxide is not present in interstitial spaces between the polymeric beads;
- and
- wherein the polymeric beads comprise a polymer that comprises polymerized units of at least one monofunctional vinyl monomer selected from the group consisting of styrene monomers;
- at least one monofunctional vinyl monomer selected from the group consisting of acrylate monomers;
- and optionally polymerized units of one or more multifunctional vinyl monomers.
4 more elements
Dependencies are inferred from the claim text.