Process to prepare phenolic ethylenediamine diacetic acid compounds

    公开(公告)号:US10472320B2

    公开(公告)日:2019-11-12

    申请号:US15736372

    申请日:2016-06-23

    IPC分类号: C07C227/18 C07C227/16

    摘要: The present invention relates to a process to prepare N,N′-di(2-hydroxybenzyl) ethylenediamine-N,N′-diacetic acid and salts thereof (HBED) comprising a reaction between formaldehyde, ethylenediamine diacetic acid or a salt thereof (EDDA) and phenol, wherein the reaction mixture contains 0.2 to 1.1 molar equivalents of alkali metal ions on the basis of the molar amount of EDDA and the reaction mixture is processed by a step in which at least part of the organic compounds other than the formed HBED are removed from the reaction mixture, and optionally recycled, during which step at least 50% and up to and including 100% of the alkali metal ions in the reaction mixture are potassium ions, to products obtainable by such process and their use.

    Quaternary fatty amidoamine detergents

    公开(公告)号:US12077486B2

    公开(公告)日:2024-09-03

    申请号:US17298063

    申请日:2019-11-29

    摘要: The invention relates to specific quaternary amidoamine detergents, the process to make them, and their use. The quaternary amidoamine detergents are obtainable by reacting a multifunctional acid with an amino amine, followed by quaternization, suitably with dimethyl carbonate, and subsequent reaction with a fatty acid. In the process to make the quaternary amidoamine detergents a multifunctional fatty acid is reacted with an amino amine, typically an amino alkylene amine, followed by quaternization with a quaternizing agent and subsequent replacement of the anion of said quaternizing agent with a fatty acid anion. The quaternary fatty amidoamine detergents are particularly useful as a surface-active compound that is soluble in an a-polar medium, for example when used as a stabilizer for solids in an a-polar medium.

    THERMALLY EXPANDABLE CELLULOSE-BASED MICROSPHERES

    公开(公告)号:US20240149236A1

    公开(公告)日:2024-05-09

    申请号:US18547388

    申请日:2021-11-19

    IPC分类号: B01J13/04

    CPC分类号: B01J13/043

    摘要: Thermally expandable microspheres include a polymeric shell surrounding a hollow core, wherein the hollow core comprises a blowing agent, and the polymeric shell comprises an acetate-functionalised cellulose having a glass transition temperature of from about 150 to about 250° C. and a hydrogen bond donor chosen from alcohols, urea, and carboxylic acids. The microspheres are formed using a process including the step of mixing an acetate-functionalised cellulose, an organic solvent, a blowing agent and a hydrogen bond donor to form a mixture and then spraying the mixture into drying equipment to produce the thermally expandable microspheres.