POLYETHYLENIMINE COATED POLYMERIC BEADS

    公开(公告)号:US20210229033A1

    公开(公告)日:2021-07-29

    申请号:US16972020

    申请日:2018-07-04

    Abstract: Polyethylenimine coated polymeric beads comprising a polymer that comprises, based on the weight of the polymer, from 25% to 75% by weight of structural units of an acetoacetoxy or acetoacetamide functional monomer, and from 25% to 75% by weight of structural units of a polyvinyl monomer; the polyethylenimine having a number average molecular weight of 300 g/mol or more; the polyethylenimine coated polymeric beads having a specific surface area in the range of from 20 to 400 m2/g; a process of preparing the polyethylenimine coated polymeric beads; a gas filter device comprising the polyethylenimine coated polymeric beads as a filter medium; and a method of removing aldehydes from air containing aldehydes, comprising contacting the air with the polyethylenimine coated polymeric beads.

    HYDROXYL AMINE SURFACTANT COMPOSITIONS

    公开(公告)号:US20240368472A1

    公开(公告)日:2024-11-07

    申请号:US18572436

    申请日:2021-10-06

    Abstract: A surfactant composition includes 60 wt % or greater of a surfactant based on a total weight of the surfactant composition and 0.01 wt % to 5 wt % of a hydroxyl amine having structure (I) based on the total weight of the surfactant composition, wherein R1, R2 and R3 of Structure (I) are independently selected from the group consisting of H, an alkanolamine, or a hydroxyl alkyl group with linear or branched carbon chain having from 1 to 8 carbons, and R4 of Structure (I) is selected from the group consisting of an alkanolamine, or a hydroxyl alkyl group with linear or branched carbon chain having from 1 to 8 carbons.

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