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    • 3. 发明授权
    • Polymer coated alumina
    • 聚合物涂层氧化铝
    • US4913935A
    • 1990-04-03
    • US294342
    • 1988-12-28
    • GwoChung Lin
    • GwoChung Lin
    • B01J20/08B01J20/32C04B41/48C04B41/83
    • B01J20/3282B01J20/08B01J20/286B01J20/3204B01J20/327C04B41/009C04B41/4861C04B41/83B01D15/325Y10T428/2998
    • The invention includes producing a stable polybutadiene film on an alumina support wherein the alumina contains an alumina having a habit or form of crystals formed during a precipitation of aluminum hydroxide from an alkali metal aluminate by preselecting and controlling the pH of the alkali metal aluminate and the addition of certain monohydric and polyhydric alcohols to the alkali metal aluminate solution. Precipitation is controlled to form crystals having a habit or form which varies from principally acicular to principally lamellar crystal forms. This alumina is (a) coated with polybutadiene to form a polymer film layer on the alumina support and (b) the polymer film layer is cross-linked to form a stable polybutadiene coated and crosslinked on a support of acicular or lamellar alumina.
    • 本发明包括在氧化铝载体上制备稳定的聚丁二烯膜,其中氧化铝含有在碱金属铝酸盐沉淀氢氧化铝期间形成的结晶习惯或形式的氧化铝,通过预选和控制碱金属铝酸盐的pH值和 向碱金属铝酸盐溶液中加入某些一元醇和多元醇。 控制沉淀以形成具有主要针状至主要层状晶体形式的习性或形式的晶体。 该氧化铝是(a)涂覆聚丁二烯以在氧化铝载体上形成聚合物膜层,和(b)聚合物膜层交联以形成在针状或层状氧化铝的载体上涂覆和交联的稳定的聚丁二烯。