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    • 1. 发明授权
    • Process for recovering 2,2-bis(4-hydroxyphenyl)propane from an adduct of
2,2-bis(4-hydroxyphenyl)propane and phenol
    • 从2,2-双(4-羟基苯基)丙烷和苯酚的加合物中回收2,2-双(4-羟基苯基)丙烷的方法
    • US4212997A
    • 1980-07-15
    • US919667
    • 1978-06-27
    • John N. AdamsGaylord M. KissingerMichael C. Lee
    • John N. AdamsGaylord M. KissingerMichael C. Lee
    • C07C27/00C07C37/84C07C39/16C07C67/00C07C37/44
    • C07C37/84C07C37/685
    • The compound 2,2-bis(4-hydroxyphenyl)propane is recovered in the form of rhombic crystals from an essentially non-crystalline mixture comprising 2,2-bis(4-hydroxyphenyl)propane, organic by-products of the condensation reaction of phenol and acetone, and phenol by lowering the temperature of the mixture from an elevated state to a temperature which is low enough to cause the separation of the phenol and 2,2-bis(4-hydroxyphenyl)propane in equimolar proportions as a crystalline adduct, recovering the adduct, forming a mixture of the adduct and water at an elevated temperature sufficient to completely melt the adduct, and thereafter lowering the temperature of the mixture of water and melted adduct to cause the separation of the 2,2-bis(4-hydroxyphenyl)propane in the form of rhombic crystals substantially free of the phenol. The crystals are easily handled and recovered by means such as filtration or centrifugation, and they can be formed into high quality polycarbonate molding resins.
    • 化合物2,2-双(4-羟基苯基)丙烷以菱形晶体的形式从包含2,2-双(4-羟基苯基)丙烷的基本上非结晶的混合物中回收,其中有机副产物是 苯酚和丙酮,和苯酚,通过将混合物的温度从升高状态降低到足够低的温度,使得以等摩尔比例分离苯酚和2,2-双(4-羟基苯基)丙烷作为结晶加合物 ,回收加合物,在足以完全熔化加合物的高温下形成加合物和水的混合物,然后降低水和熔融的加合物的混合物的温度,导致2,2-双(4 羟基苯基)丙烷,其形式基本上不含酚。 通过过滤或离心等方法可以容易地处理和回收晶体,并且它们可以形成高质量的聚碳酸酯模制树脂。
    • 9. 发明授权
    • Friction type hold open mechanism
    • 摩擦式保持开启机构
    • US4628568A
    • 1986-12-16
    • US761422
    • 1985-08-01
    • Michael C. LeeDaniel F. RaubingerPeter L. Swanney
    • Michael C. LeeDaniel F. RaubingerPeter L. Swanney
    • E05D11/08E05D11/10
    • E05D11/087E05D11/1085E05Y2900/531Y10T16/5403Y10T16/54035
    • A vehicle door hold open mechanism of the friction type may be assembled to the vehicle prior to the vehicle being subjected to an electrostatic priming process without coating the critical metal surfaces with primer. An arm member secured to the door includes non-conductive frictional material molded in a two sided arc. A pair of metal blocks engagable with the frictional material to create a frictional force are insulated from the vehicle body by elastomer blocks. When the door is opened, the frictional material slides between the metal blocks, compressing them to create a frictional hold open force. Neither the metal blocks, nor the frictional material, will receive a coating of primer during the priming process, as they will be insulated from the electrostatic charge received by the vehicle door and body.
    • 摩擦式的车门开启机构可以在车辆进行静电引燃过程之前组装到车辆上,而不用引物涂覆关键金属表面。 固定在门上的臂构件包括模制在双面弧中的非导电摩擦材料。 与摩擦材料接合以产生摩擦力的一对金属块通过弹性体块与车体绝缘。 当门打开时,摩擦材料在金属块之间滑动,压缩它们以产生摩擦保持力。 在启动过程中,金属块和摩擦材料都不会接收底漆涂层,因为它们将与车门和车体接收到的静电电荷绝缘。