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    Reversible gels of starch derivatives
    1.
    发明公开
    Reversible gels of starch derivatives 失效
    Umkehrbare Gele vonStärkederivaten。

    公开(公告)号：EP0188237A1

    公开(公告)日：1986-07-23

    申请号：EP86100243.4

    申请日：1986-01-09

    申请人： National Starch and Chemical Corporation

    发明人： Trzasko, Peter T. ,  Tessler, Martin M. ,  Dirscherl, Teresa A.

    IPC分类号： C08B31/00 ,  C08B33/00 ,  A23L1/0522

    CPC分类号： C08B33/00 ,  A23L29/219 ,  C08B31/04

    摘要： The invention provides modified starches having unique gelling properties which are prepared by chemically reacting an amylose containing starch base with an etherification or esterification reagent which will introduce a long linear hydrocarbon chain substituent therein. The aqueous gels formed by the starches are thermally and pH-reversible and the thermally-reversible gels are hot gels. The invention further provides an improved process for preparing starch halfacid esters in water by reacting starch under alkaline conditions with a hydrophobic-substituted cyclic dicarboxylic acid anhydride in the presence of a phase transfer agent.

    摘要翻译： 本发明提供具有独特胶凝性质的改性淀粉，其通过使含直链淀粉的淀粉基质与醚化或酯化试剂化学反应制备，其将在其中引入长的直链烃链取代基。 由淀粉形成的水凝胶是热可逆反应的，热可逆凝胶是热凝胶。 本发明还提供了一种通过在碱性条件下使淀粉与疏水取代的环状二羧酸酐在相转移剂存在下反应制备淀粉半酸酯在水中的改进方法。