中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

204 records (took 0.029 seconds)

    CATALYTIC PRODUCTION OF LACTIDE DIRECTLY FROM LACTIC ACID
    81.
    发明申请
    CATALYTIC PRODUCTION OF LACTIDE DIRECTLY FROM LACTIC ACID 审中-公开
    乳酸直接催化生产乳酸

    公开(公告)号：WO1992005168A1

    公开(公告)日：1992-04-02

    申请号：PCT/US1991006775

    申请日：1991-09-18

    Applicant: BATTELLE MEMORIAL INSTITUTE

    Inventor： BATTELLE MEMORIAL INSTITUTE ,  BENECKE, Herman, P. ,  MARKLE, Richard, A. ,  SINCLAIR, Richard, G.

    IPC: C07D319/12

    CPC classification number: C07D319/12 ,  B01J2219/1942

    Abstract: The present invention is directed to a method for making lactide from aqueous lactic acid. The inventive method comprises converting feed aqueous lactic acid to its vapor phase. The feed vapors then are passed through a reactor maintained at elevated temperature and in which optionally is disposed an alumina catalyst. Withdrawn from the reactor is product lactide, water, and unreacted lactic acid which are subject to separation for recovery of the lactide product. The separated unreacted lactic acid is eligible for readmission to the process for making additional lactide. This cyclic process embodiment of the present invention comprises the steps of passing make-up aqueous lactic acid feed into a vaporization zone along with unreacted aqueous lactic acid filtrate from another step of the process and therein forming aqueous lactic acid feed vapors. The thus-generated vapors that are passed through a vapor phase reaction zone held at elevated temperature for forming lactide therein. Lactide as solid is separated from unreacted aqueous lactic acid filtrate; and the filtrate is passed into the vaporization zone in the initial step of the process.

    Abstract translation: 本发明涉及从乳酸水溶液制备丙交酯的方法。 本发明的方法包括将进料水乳酸转化成其气相。 然后将进料蒸气通过保持在升高温度下的反应器，并且其中任选地设置氧化铝催化剂。 从反应器中抽出的是产品丙交酯，水和未反应的乳酸，其分离以回收丙交酯产物。 分离的未反应的乳酸有资格重新进入制备额外的丙交酯的方法。 本发明的循环方法实施方案包括以下步骤：将乳酸含水原料与来自该方法的另一步骤的未反应的乳酸水溶液一起送入蒸发区，并形成含水乳酸进料蒸气。 由此产生的蒸气通过保持在升高的温度下的气相反应区以在其中形成丙交酯。 作为固体的丙交酯与未反应的乳酸乳液分离; 并且在该过程的初始步骤中将滤液进入蒸发区。

    LACTIDE PRODUCTION FROM DEHYDRATION OF AQUEOUS LACTIC ACID FEED
    82.
    发明申请
    LACTIDE PRODUCTION FROM DEHYDRATION OF AQUEOUS LACTIC ACID FEED 审中-公开
    酸乳酸脱水生产乳酪

    公开(公告)号：WO1992005167A1

    公开(公告)日：1992-04-02

    申请号：PCT/US1991006774

    申请日：1991-09-18

    Applicant: BATTELLE MEMORIAL INSTITUTE

    Inventor： BATTELLE MEMORIAL INSTITUTE ,  SINCLAIR, Richard, G. ,  MARKLE, Richard, A. ,  SMITH, Russell, K.

    IPC: C07D319/12

    CPC classification number: C08J5/18 ,  B01J2219/1942 ,  C07D319/12 ,  C08J2367/04 ,  C08L67/04 ,  C09D167/04

    Abstract: The present invention is directed to a method for making L-lactide (LD) from aqueous L-lactic acid. Aqueous lactic acid feed for present purposes comprehends an aqueous mixture of one or more of lactic acid, lactic acid dimer, and lactic acid trimer optionally with LD being present. L-lactic acid is the preferred feed configuration for making L-lactide, and is to be understood even though the configuration symbol is not used throughout this application. Aqueous lactic acid feed is treated for removal of water therefrom until a degree of polymerization (DP) not substantially above about 2 is reached. The treatment then is ceased to produce a crude LD product. LD then is separate from the crude LD product. A preferred treatment involves heating the feed at elevated temperature to remove water. LD can be separated from the crude LD product by a variety of techniques to produce an LD-depleted product. This LD-depleted product, optionally augmented with additional aqueous lactic acid and/or water then can be readmitted to the process for making additional lactide. This cyclic or recycle process embodiment of the present invention enables very high lactide conversions to be realized.

    PROVIDING INTELLIGIBLE MARKINGS
    83.
    发明申请
    PROVIDING INTELLIGIBLE MARKINGS 审中-公开
    提供智能标记

    公开(公告)号：WO1992004192A1

    公开(公告)日：1992-03-19

    申请号：PCT/US1991005938

    申请日：1991-08-20

    Applicant: BATTELLE MEMORIAL INSTITUTE

    Inventor： BATTELLE MEMORIAL INSTITUTE ,  ANDRUS, Paul, G. ,  DOLASH, Thomas, M.

    IPC: B41M03/14

    CPC classification number: C09D11/50 ,  B41M3/06 ,  B41M3/144 ,  C09B23/0008 ,  C09B23/0041 ,  C09B23/0066 ,  C09B23/086 ,  G06K1/121

    Abstract: A method for providing intelligible markings that are virtually invisible to the unaided eye on the surface of an article, comprises: applying onto the surface, by a jet printing process, a marking medium comprising a compatible liquid or viscous substance containing an organic laser dye (typically IR-125 in a concentration of about 0.005 to 0.05 percent by weight of the medium) that is poorly absorptive of radiation in the visible range of about 400 to 700 nanometers, is highly absorptive of radiation in the near infrared range of at least about 750 nanometers in wavelength (typically about 750 to 900 nanometers), and fluoresces in response to radiation excitation in the said near infrared range to produce fluorescent radiation of wavelengths longer than the wavelength of the excitation (typically in the range of about 800 to 1100 nanometers). Other useful laser dyes may comprise DTTCI, DNTTCI, HDITCI, DDTTCI, IR-140, DDCI-4, or IR-132.

    ELECTRONIC SECURITY DEVICE
    85.
    发明申请
    ELECTRONIC SECURITY DEVICE 审中-公开
    电子安全装置

    公开(公告)号：WO1990007759A1

    公开(公告)日：1990-07-12

    申请号：PCT/US1990000084

    申请日：1990-01-04

    Applicant: BATTELLE MEMORIAL INSTITUTE

    Inventor： BATTELLE MEMORIAL INSTITUTE ,  ESCHBACH, Eugene, A. ,  GRIFFIN, Jeffery, W. ,  LeBLANC, Edward, J.

    IPC: G08B13/02

    CPC classification number: G06K19/07758 ,  G06K19/07749 ,  G07C1/00 ,  G08B13/126

    Abstract: The present invention relates to a security device having a control box (12) containing an electronic system (50) and a communications loop (14) over which the system transmits a signal. The device is constructed so that the communications loop can be extended from the control box across the boundary of a portal such as a door into a sealed enclosure into which access is restricted whereby the loop must be damaged or moved in order for an entry to be made into the enclosure. The device is adapted for detecting unauthorized entries into such enclosures such as rooms or containers and for recording the time at which such entries occur for later reference. Additionally, the device detects attempts to tamper or interfere with the operation of the device itself and records the time at which such events take place. In the preferred embodiment, the security device includes a microprocessor-based electronic system (50) and a detection module (72) capable of registering changes in the voltage and phase of the signal transmitted over the loop.

    Abstract translation: 本发明涉及一种具有包含电子系统（50）的控制箱（12）和系统传输信号的通信环路（14）的安全装置。 该设备被构造成使得通信环路可以从控制箱跨越诸如门之类的门户的边界延伸到密封的外壳中，该密封的外壳被限制到其中，由此环路必须被损坏或移动以使入口成为 制成外壳。 该装置适用于检测未经授权的进入诸如房间或容器的这些外壳的记录，并用于记录这些条目出现的时间供以后参考。 此外，该设备检测尝试篡改或干扰设备本身的操作并记录发生这种事件的时间。 在优选实施例中，安全装置包括基于微处理器的电子系统（50）和检测模块（72），其能够记录在环路上传输的信号的电压和相位的变化。

    HOLLOW ELECTRODE PLASMA EXCITATION SOURCE
    86.
    发明申请
    HOLLOW ELECTRODE PLASMA EXCITATION SOURCE 审中-公开
    中空电极等离子体激发源

    公开(公告)号：WO1990004852A1

    公开(公告)日：1990-05-03

    申请号：PCT/US1989004708

    申请日：1989-10-24

    Applicant: BATTELLE MEMORIAL INSTITUTE

    Inventor： BATTELLE MEMORIAL INSTITUTE ,  BALLOU, Nathan, E.

    IPC: H01J49/12

    CPC classification number: H05H1/48 ,  H01J49/12

    Abstract: A plasma source incorporates a furnace (10) as a hollow anode, while acoaxial cathode (24) is disposed therewithin. The source is located in a housing (12) provided with an ionizable gas such that a glow discharge is produced between anode and cathode. Radiation or ionic emission from the glow discharge characterizes a sample placed within the furnace and heated to elevated temperatures.

    Abstract translation: 等离子体源包括作为中空阳极的炉（10），而在其中设置有轴向阴极（24）。 源设置在具有可电离气体的壳体（12）中，使得在阳极和阴极之间产生辉光放电。 来自辉光放电的辐射或离子发射表征放置在炉内的样品并加热至升高的温度。

    PHASE REDISTRIBUTION PROCESSING
    88.
    发明申请
    PHASE REDISTRIBUTION PROCESSING 审中-公开
    相位重新分配处理

    公开(公告)号：WO1990002009A1

    公开(公告)日：1990-03-08

    申请号：PCT/US1989003481

    申请日：1989-08-15

    Applicant: BATTELLE MEMORIAL INSTITUTE

    Inventor： BATTELLE MEMORIAL INSTITUTE ,  DIAMOND, Sidney ,  PATEL, Aspi, N.

    IPC: B22F09/00

    CPC classification number: C22C1/0425 ,  B22F9/008 ,  B22F9/04 ,  B22F2009/041 ,  Y10S75/956 ,  Y10S148/902

    Abstract: Homogenous and refined microstructure powders and the method of making them from, for example, liquid metal immiscible systems or very limited solid solubility systems. At least two metals are melted and then rapidly solidified to yield a solid with a segregated, non-uniform microstructure. The resulting rapidly-solidified solid is then reduced to a powder and subjected to high-energy milling for a time sufficient to reduce the segregation to the desired level of uniformity.

    Abstract translation: 均匀和精制的微结构粉末及其制备方法，例如液态金属不混溶体系或非常有限的固体溶解度体系。 将至少两种金属熔化，然后快速固化，得到具有偏析的非均匀微观结构的固体。 然后将所得快速固化的固体还原成粉末，并进行高能量研磨足够的时间以将偏析减少到所需的均匀度水平。

    SYSTEM FOR USE WITH SOLID STATE DOSIMETERS
    90.
    发明申请
    SYSTEM FOR USE WITH SOLID STATE DOSIMETERS 审中-公开
    使用固体状态剂的系统

    公开(公告)号：WO1990000258A1

    公开(公告)日：1990-01-11

    申请号：PCT/US1989002163

    申请日：1989-05-18

    Applicant: BATTELLE MEMORIAL INSTITUTE

    Inventor： BATTELLE MEMORIAL INSTITUTE ,  MILLER, Steven, D. ,  MCDONALD, Joseph, C. ,  EICHNER, Fred, N. ,  TOMERAASEN, Paul, L.

    IPC: G01T01/11

    CPC classification number: G01T1/11

    Abstract: The present invention constitutes a system for determining the amounts of ionizing radiation to which dosimeters using thermoluminescent materials (40) have been exposed. In accordance with this system, the thermoluminescent materials which comprise the dosimeters are first cooled by contact with a cryogenic substance (44) such as liquified nitrogen. The thermoluminescent materials are then optically stimulated by exposure to ultraviolet light (25). Thereafter, the amounts of visible light emitted by the thermoluminescent materials are detected and counted as the materials are allowed to warm up to room temperature. The amounts of luminescence exhibited by the materials are related to radiation exposure and provide a sensitive measure of radiation dosage. It has been discovered that the above procedure is most effective when heavily doped thermoluminescent materials are used and that the procedure allows many useful plastic materials to now be employed in dosimeter constructions.

Patent Agency Ranking