ALIPHATIC ESTERS AND POLYMER COMPOSITIONS CONTAINING THEM
    24.
    发明申请
    ALIPHATIC ESTERS AND POLYMER COMPOSITIONS CONTAINING THEM 审中-公开
    其他食品和聚合物组合物

    公开(公告)号:US20160333169A1

    公开(公告)日:2016-11-17

    申请号:US15111036

    申请日:2015-01-09

    Abstract: This invention relates to a family of aliphatic esters having the following general structure: R1—O—C(O)—R4—C(O)—[—O—R2—O—C(O)—R5—C(O)—]m—O—R3 in which: R1 is selected from one or more of the groups consisting of H, linear and branched saturated and unsaturated alkyl residues of the C1-C24 type, and polyol residues esterified with C1-C24 monocarboxylic acids; R2 comprises —CH2—C(CH3)2—CH2— and C2-C8 alkylene groups, and comprises at least 50% in moles of the said —CH2—C(CH3)2—CH2— groups; R3 is selected from one or more of the groups consisting of H, linear and branched saturated and unsaturated alkyl residues of the C1-C24 type, and polyol residues esterified with C1-C24 monocarboxylic acids; R4 and R5 comprise one or more C2-C22 alkylenes and comprise at least 50% in moles of C7 alkylenes; m lies between 1 and 20; at least one of R1 and/or R3 comprise polyol residues esterified with at least one C1-C24 monocarboxylic acid selected from the group consisting of stearic acid, palmitic acid, 9-ketostearic acid, 10-ketostearic acid and mixtures thereof. These esters are particularly suitable for use as plasticisers for various types of polymers such as for example vinyl polymers of the polyvinyl chloride (PVC) type, thermoplastic elastomers, and hydroxy acid polyesters, for example polyesters of lactic acid.

    Abstract translation: 这些酯特别适合用作各种类型的聚合物的增塑剂,例如聚氯乙烯(PVC)类型的乙烯基聚合物,热塑性弹性体和羟基酸聚酯,例如乳酸的聚酯。

    PROCESS FOR THE PRODUCTION AND SEPARATION OF 5-HYDROXYMETHYLFURFURAL WITH QUATERNARY AMMONIUM SALTS

    公开(公告)号:US20210292290A1

    公开(公告)日:2021-09-23

    申请号:US17259632

    申请日:2019-07-12

    Abstract: The present invention relates to a process for the production and separation of 5-hydroxymethylfurfural (HMF) comprising the steps of: (1) dehydrating at least one saccharide selected from the group consisting of monosaccharides having 6 carbon atoms and disaccharides, oligosaccharides and polysaccharides formed from units having 6 carbon atoms or mixtures thereof, in the presence of water and of at least one quaternary ammonium salt, at a temperature between 80-130° C., obtaining a reaction mixture comprising the quaternary ammonium salt, HMF and any unreacted saccharide; and (2) subjecting the said reaction mixture to at least one membrane separation operation selected in the group consisting of nanofiltration, reverse osmosis, electrodialisis and their combinations, obtaining an aqueous permeate comprising HMF and a retentate comprising quaternary ammonium salt, wherein both the dehydration of step (1) and the separation operations of step (2) are carried out in the absence of organic solvents.

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