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    • 7. 发明授权
    • Novel starch ethers
    • 新型淀粉醚
    • US4017460A
    • 1977-04-12
    • US639490
    • 1975-12-10
    • Martin M. Tessler
    • Martin M. Tessler
    • C08B31/08C08B31/12
    • C08B31/08C08B31/125
    • A reagent useful for the chemical modification of starch is prepared by the reaction of a 2,3-dihalopropionic acid or alkyl ester thereof with a secondry amine. The reaction of the reagent with starch, carried out in an aqueous solution under controlled conditions, produces novel amino acid ether derivatives which are characterized by the presence of both a cationic and an anionic substituent group on the same reactive site. The resulting starch ethers are characterized by their stability, their ability to form cooked pastes which are more resistant to gelling upon cooling and their lowered gelatinization temperatues.
    • 通过2,3-二卤代丙酸或其烷基酯与仲胺反应制备可用于淀粉化学改性的试剂。 在受控条件下在水溶液中进行的试剂与淀粉的反应产生新的氨基酸醚衍生物,其特征在于在同一反应位点上存在阳离子和阴离子取代基。 所得淀粉醚的特征在于它们的稳定性,它们形成熟化糊的能力,其在冷却时更耐胶凝,并且降低了糊化温度。