Patent ID: 11883791
Assignee: DDP SPECIALTY ELECTRONIC MATERIALS US 9, LLC
Field: Chemical engineering (Chemistry)
Classification: CPC B  C | IPC B  C  G

Claim 0:
1. 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.