Polyester polycondensation with catalyst and a catalyst enhancer
    61.
    发明授权
    Polyester polycondensation with catalyst and a catalyst enhancer 失效
    与催化剂和催化剂增强剂的聚酯缩聚

    公开(公告)号:US06372879B1

    公开(公告)日:2002-04-16

    申请号:US09895990

    申请日:2001-06-29

    Abstract: The present invention is based upon the discovery that nontitanyl oxalates can enhance the catalytic functionality of titanyl oxalate catalysts. This invention provides a novel catalytic composition containing a titanyl oxalate catalyst and a metallic oxalate catalyst enhancer and optionally containing a metallic cocatalyst such as an antimony based catalyst. A synergistic relationship has been discovered between titanyl oxalate catalyst and the catalyst enhancer. A synergistic relationship has also been discovered between the titanyl oxalate catalyst, catalyst enhancer and a metallic cocatalyst such as antimony oxide or antimony triacetate. Also provided is an improved process of producing polyester by the polycondensation of polyester forming reactants in the presence of a catalytically effective amount of a polycondensation catalyst, wherein the improvement comprises utilizing, as the polycondensation catalyst, the novel catalyst composition containing a titanyl oxalate such as lithium titanyl oxalate and a catalyst enhancer such as a nontitanyl metallic oxalate like lithium oxalate and optionally containing a metallic catalyst such as antimony oxide or antimony triacetate. The improved process produces an improved polyester having lower acetaldehyde numbers and good color. The titanyl oxalate/catalyst enhancer composition can be used as a polycondensation catalyst in combination with other catalysts to achieve synergistic catalytic activity. Preferred is a combination of lithium or potassium titanyl oxalate, Li2 or K2TiO(C2O4)2, lithium or potassium oxalate, Li2 or K2(C2O4)2 with antimony oxide or antimony triacetate or antimony trisglycoxide.

    Abstract translation: 本发明基于以下发现,即草酸钛酸酯可以增强草酸氧钛催化剂的催化功能。 本发明提供一种含有草酸氧钛催化剂和金属草酸盐催化剂增强剂并任选地含有金属助催化剂如锑基催化剂的新型催化组合物。 在草酸氧钛催化剂和催化剂增强剂之间已经发现协同关系。 在草酸氧钛催化剂,催化剂增强剂和金属助催化剂如氧化锑或三乙酸锑之间也发现了协同关系。 还提供了通过在催化有效量的缩聚催化剂存在下,通过聚酯形成反应物的缩聚来生产聚酯的改进方法,其中改进包括利用含有草酸氧钛的新型催化剂组合物作为缩聚催化剂, 草酸氧钛酸锂和催化剂增强剂如非钛酸金属草酸盐如草酸锂,并任选地含有金属催化剂如氧化锑或三乙酸锑。 改进的方法产生具有较低乙醛数和良好颜色的改进的聚酯。 草酸氧钛/催化剂增强剂组合物可以与其它催化剂组合用作缩聚催化剂以实现协同催化活性。 优选的是草酸锂或钾钛酸盐,Li 2或K 2 TiO(C 2 O 4)2,草酸锂或钾,Li 2或K 2(C 2 O 4)2与氧化锑或三乙酸锑或三羟基氧化锑的组合。

    Azeotrope of HF and 1233zd
    64.
    发明授权
    Azeotrope of HF and 1233zd 失效
    HF和1233zd的共沸物

    公开(公告)号:US6013846A

    公开(公告)日:2000-01-11

    申请号:US35696

    申请日:1998-03-05

    CPC classification number: C07C21/18 C07C17/00 C07C17/38 C07C17/383

    Abstract: An azeotrope containing HF and 1233zd is provided, as are methods for separating this azeotrope from mixtures of HF and 1233zd which are HF-rich or 1233zd-rich and methods for making use of the azeotrope and separation methods to improve processes for preparing 1233zd, an intermediate used in the preparation of 245fa. 245fa is a known foam blowing agent and refrigerant.

    Abstract translation: 提供了含有HF和1233zd的共沸物,以及从HF和1233zd的富HF或1233zd富集的混合物中分离该共沸物的方法,以及利用共沸物和分离方法改进制备1233zd的方法 中间体用于制备245fa。 245fa是已知的泡沫发泡剂和制冷剂。

    Apparatus for determining metal properties
    65.
    发明授权
    Apparatus for determining metal properties 失效
    用于确定金属性质的装置

    公开(公告)号:US5033720A

    公开(公告)日:1991-07-23

    申请号:US499198

    申请日:1990-03-23

    Applicant: Hong-Bin Chen

    Inventor: Hong-Bin Chen

    Abstract: A torsion pendulum apparatus and a dialometer are combined for simultaneous measurement of the internal friction and the expansion of an alloy. The combination is controlled by a programmable controller so as to conduct in-situ measurements of the internal friction and the expansion of a metal during its phase transformation or specific heat treatment. The results of the internal friction measurement and the expansion measurement can be checked and assumed by one another so that more accurate and detailed information can be obtained for the study of metal alloys.

    Abstract translation: 组合了扭力摆式装置和方差计,用于同时测量合金的内部摩擦和膨胀。 该组合由可编程控制器控制,以便在其相变或比热处理期间对金属的内摩擦和膨胀进行原位测量。 内部摩擦测量和膨胀测量的结果可以彼此检查和假设,从而可以获得更准确和详细的信息来研究金属合金。

    Pendant lamp
    66.
    外观设计

    公开(公告)号:USD1072323S1

    公开(公告)日:2025-04-22

    申请号:US29980439

    申请日:2024-12-24

    Applicant: Bin Chen

    Designer: Bin Chen

    Anti-UV plastic for automobile interior ornaments

    公开(公告)号:US20190092939A1

    公开(公告)日:2019-03-28

    申请号:US16005637

    申请日:2018-06-11

    Abstract: This invention discloses an anti-UV plastic for automobile interior ornaments. The anti-UV plastic for automobile interior ornaments includes PC resin, ABS resin, antioxygen, pentaerythritol stearate, inorganic filler, anti-UV fiber, organic silicon resin or modified organic silicon resin. Except maintaining the properties of ABS resin and PC resin, the anti-UV plastic for automobile interior ornaments has excellent mechanical properties and thermal properties, and can reduce the maintenance cost of automobile interior ornaments caused by UV aging. In addition, the anti-UV plastic for automobile interior ornaments owns favorable machining properties, and can be machined into automobile interior ornaments of various shapes.

    SYSTEM, METHOD FOR DISPLAYING HANDWRITING SYNCHRONOUSLY, AND HANDWRITING DEVICE

    公开(公告)号:US20180349017A1

    公开(公告)日:2018-12-06

    申请号:US15712915

    申请日:2017-09-22

    Abstract: The present disclosure is related to a system and a system for displaying handwriting synchronously, and a handwriting device thereto. The handwriting device adopts a bistable display panel and includes a sensor circuitry that is used to record the handwriting contents over the panel. The sensor circuitry through the handwriting renders handwriting positions and pressure values. These sensed data is transmitted to a computer device instantly when the data of positions and pressure values are generated by the handwriting device. In the computer device, the handwriting can be synchronously displayed through a transformation from the received data to displaying positions and pressure values. Finally, in the computer device, a document recording the handwriting track over time is created. The document can be a picture, a video, or even a document with audio.

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