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    • 4. 发明授权
    • Liquid crystal polycarbonates and methods of preparing same
    • 液晶聚碳酸酯及其制备方法
    • US07211641B2
    • 2007-05-01
    • US10789781
    • 2004-02-27
    • Sheldon ShaferJulia Lee
    • Sheldon ShaferJulia Lee
    • C08G64/00
    • C08G64/045C08G64/307
    • Liquid crystal polycarbonates are made by forming a reaction mixture containing (a) an activated diaryl carbonate; (b) at least two species of aromatic diols selected from among resorcinol, 4,4′-biphenol, hydroquinone, methylhydroquinone, 4,4′-dihydroxyphenylether, dihydroxynaphthalene, including in particular the 2,6, 1,5, and 2,7 isomers, 4,4′-dihydroxybenzophenone and 2,6-dihydroxyanthraquinone (anthraflavic acid); and (c) optionally bisphenol A in a maximum amount of 10 mole %; and processing the reaction mixture in a melt transesterification reaction to form a liquid crystal polycarbonate. While the product composition has the same overall characteristics as compositions made using diphenyl carbonate as the donor moiety for the carbonate linkage, they are analytically distinguishable because of limited incorporation of intermediate or end-cap residues derived from the activated diaryl carbonate.
    • 通过形成含有(a)活性碳酸二芳基酯的反应混合物制备液晶聚碳酸酯; (b)选自间苯二酚,4,4'-联苯酚,氢醌,甲基氢醌,4,4'-二羟基苯基醚,二羟基萘中的至少两种芳族二醇,特别包括2,6,1,5和2, 7异构体,4,4'-二羟基二苯甲酮和2,6-二羟基蒽醌(蒽醌); 和(c)任选的双酚A,最大量为10摩尔%; 并在熔融酯交换反应中处理反应混合物以形成液晶聚碳酸酯。 虽然产品组合物具有与使用碳酸二苯酯作为碳酸酯键的供体部分制备的组合物相同的总体特性,但是由于活性碳酸二芳基酯衍生的中间体或端帽残基的引入有限,因此它们是可分析的。
    • 6. 发明授权
    • Adjustable four plate assembly for a chair
    • 椅子可调四板组件
    • US06799803B1
    • 2004-10-05
    • US10412289
    • 2003-04-14
    • Elizabeth Julia LeeChristopher Barnabas WilsonJohn Louis Ingold
    • Elizabeth Julia LeeChristopher Barnabas WilsonJohn Louis Ingold
    • A47C754
    • A47C1/03
    • An adjustable four plate assembly for a chair including a first plate having a top surface and a bottom surface, a second plate having a top surface and a bottom surface adapted to receive the top surface of the first plate so as to allow for the pivoting of said second plate from side to side. A third plate having a top surface and a bottom surface adapted to receive the top surface of the second plate so as to allow for the lateral sliding of the third plate from side to side. A fourth plate having a top surface and a bottom surface adapted to receive the top surface of the third plate so as to allow for the sliding of the fourth plate forwards and backwards. The adjustable four plate assembly allows for the second plate, the third plate and the fourth plate to move independently of one another and or in combination with one another.
    • 一种用于椅子的可调节的四板组件,包括具有顶表面和底表面的第一板,第二板,其具有顶表面和底表面,适于容纳第一板的顶表面,以允许枢转 所述第二板从一侧到另一侧。 具有顶表面和底表面的第三板,其适于容纳第二板的顶表面,以允许第三板从一侧到另一侧的横向滑动。 第四板,其具有适于容纳第三板的顶表面的顶表面和底表面,以允许第四板向前和向后的滑动。 可调节的四板组件允许第二板,第三板和第四板彼此独立地或彼此组合地移动。