POLYMERIC MANNICH BASE, PREPARATION METHODS AND USE AS AN EPOXY RESIN CURATIVE

    公开(公告)号:US20240026067A1

    公开(公告)日:2024-01-25

    申请号:US18254759

    申请日:2021-11-26

    申请人: Paul JONES

    发明人: Paul JONES

    摘要: The present invention relates to a polymeric Mannich base useful as an epoxy curative and/or accelerator, which has an improved safety profile due to the avoidance of the use of phenol in its preparation. More specifically, the present invention provides a method for forming a polymeric Mannich base, as well polymeric Mannich bases preparable by the method, for use as an epoxy resin curative and/or accelerator, said method comprising: i) providing: a) a polymer comprising aromatic terminal groups linked by a hydrocarbyl polymeric backbone, wherein each of the aromatic terminal groups comprises a ring substituted with at least one activating group and at least one unsubstituted ring atom, wherein the one or more activating groups is capable of activating the aromatic terminal group to undergo electrophilic aromatic 15 substitution at the at least one unsubstituted ring atom; wherein the aromatic terminal groups are bonded to the hydrocarbyl polymeric backbone through an ether, ester, amine, amide, thioether, or thioester group; b) a primary or secondary monoamine and/or a polyamine comprising primary and/or secondary amino groups, and c) an aldehyde; and ii) performing a Mannich reaction using components a) to c), wherein each aromatic terminal group of the polymer is converted to a Mannich base.