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    • 2. 发明授权
    • Aliphatic polyester carbonate and process for producing the aliphatic
polyester carbonate
    • 脂肪族聚酯碳酸酯及其制造方法
    • US5880224A
    • 1999-03-09
    • US901468
    • 1997-07-28
    • Mitsuo MiuraKyohei TakakuwaTakayasu FujimoriMaki Ito
    • Mitsuo MiuraKyohei TakakuwaTakayasu FujimoriMaki Ito
    • C08G63/64C08G63/78C08G63/88C08K3/32C08L101/16
    • C08G63/64C08K3/32
    • A process for producing an aliphatic polyester carbonate which comprises reacting (1) an aliphatic dicarboxylic acid compound containing succinic acid as a main component, (2) an aliphatic dihydroxy compound containing 1,4-butanediol as a main component, and (3) (a) a polyhydric alcohol having 3 or more hydroxyl groups in a molecule, (b) a polybasic carboxylic acid compound having 3 or more carboxyl groups in a molecule, or (c) a polybasic carboxylic acid having one or more hydroxyl groups in a molecule to obtain an aliphatic polyester oligomer and reacting the obtained aliphatic polyester oligomer and a carbonate compound, wherein the aliphatic polyester carbonate has a melt tension of 1.5 g or more at 190.degree. C. and at an extrusion rate of 10 mm/minute; a process for producing an aliphatic polyester carbonate which comprises reacting above components (1) and (2) to obtain an aliphatic polyester oligomer and reacting the obtained aliphatic polyester oligomer, above component (3) (a), and a carbonate compound, wherein the aliphatic polyester carbonate has the same properties; and aliphatic polyester carbonates produced by these processes. The aliphatic polyester carbonate is branched and biodegradable, has a high molecular weight, and shows higher melt tension and more excellent molding property in comparison with conventional linear aliphatic polyester carbonates in molding of the polyester carbonate to prepare films, sheets, fibers, and other molded products.
    • 一种脂肪族聚酯碳酸酯的制造方法,其特征在于,使(1)以琥珀酸为主要成分的脂肪族二羧酸化合物与(2)以1,4-丁二醇为主要成分的脂肪族二羟基化合物和(3)( a)分子中具有3个以上羟基的多元醇,(b)分子中具有3个以上羧基的多元羧酸化合物,或(c)分子中具有一个以上羟基的多元羧酸 得到脂肪族聚酯低聚物,使所得到的脂肪族聚酯低聚物和碳酸酯化合物反应,其中脂族聚酯碳酸酯在190℃,挤出速度为10毫米/分钟时的熔融张力为1.5克以上。 一种脂肪族聚酯碳酸酯的制造方法,其特征在于,使上述成分(1)和(2)反应,得到脂肪族聚酯低聚物,使得到的脂肪族聚酯低聚物,上述成分(3)(a)和碳酸酯化合物反应, 脂肪族聚酯碳酸酯具有相同的性质; 和通过这些方法生产的脂肪族聚酯碳酸酯。 与聚酯碳酸酯成型时的常规直链脂族聚酯碳酸酯相比,脂肪族聚酯碳酸酯是分支和可生物降解的,具有高分子量,并且显示出更高的熔体张力和更优异的成型性能,以制备膜,片,纤维等成型 产品。
    • 6. 发明授权
    • Apparatus and method for multiple spindle kneading for improving ground
    • 用于改善磨土的多主轴揉捏装置和方法
    • US4084383A
    • 1978-04-18
    • US744990
    • 1976-11-26
    • Yoshinori KukinoMitsuo MiuraHayao Aoyagi
    • Yoshinori KukinoMitsuo MiuraHayao Aoyagi
    • E02D3/12E02D27/26
    • E02D27/26E02D3/126
    • A plurality of agitation spindles are disposed, and an agitation vane is attached to the lower portion of each agitation spindle. A mixing and kneading zone for mixing and kneading soft soil with a hardener is formed so that the hardener is supplied near these agitation vanes. The agitation spindles are supported by reinforcing members and connecting members to construct a multiple spindle kneading apparatus for improving ground. In one embodiment, blade-like excavating cutters are mounted on the agitation spindles. In another embodiment, hollow agitation spindles are used and the hollow portions are used as hardener passages. In still another embodiment, a tube for injecting the hardener into the mixing and kneading zone is disposed so that it can be moved up and down. A method for hardening soft ground by using this multiple spindle kneading apparatus in which the hardener feed position can be changed is provided.
    • 设置多个搅拌轴,在搅拌轴的下部安装搅拌叶片。 形成用于将软土与硬化剂混​​合和捏合的混合和捏合区域,使得硬化剂在这些搅拌叶片附近供应。 搅拌轴由加强构件和连接构件支撑,构成用于改善地面的多主轴捏合装置。 在一个实施例中,叶片式挖掘刀具安装在搅拌轴上。 在另一个实施方案中,使用中空搅拌锭子,并且将中空部分用作固化剂通道。 在另一个实施例中,将用于将固化剂注入混合和捏合区域的管设置成使其能够上下移动。 提供了一种通过使用其中可以改变固化剂进给位置的该多轴捏合装置来硬化软土的方法。