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    TITANIUM DIOXIDE FINISHING PROCESS
    2.
    发明申请
    TITANIUM DIOXIDE FINISHING PROCESS 审中-公开
    二氧化钛精加工工艺

    公开(公告)号：WO2007053584A1

    公开(公告)日：2007-05-10

    申请号：PCT/US2006/042389

    申请日：2006-10-31

    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY ,  DIEMER, Russell, Bertrum, Jr. ,  EATON, Alan, Roger ,  SUBRAMANIAN, Narayanan, Sankara ,  TAYLOR, Stephen, William ,  SCHURR, George, A. ,  ZIMMERMAN, David, A.

    Inventor： DIEMER, Russell, Bertrum, Jr. ,  EATON, Alan, Roger ,  SUBRAMANIAN, Narayanan, Sankara ,  TAYLOR, Stephen, William ,  SCHURR, George, A. ,  ZIMMERMAN, David, A.

    IPC: C09C1/36 ,  C09C3/04 ,  C01G23/047

    CPC classification number: C01G23/07 ,  B82Y30/00 ,  C01G23/075 ,  C01G23/08 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/80 ,  C09C1/3607

    Abstract: This disclosure relates to process for producing titanium dioxide (TiO 2 ) pigments, comprising the following steps: a) oxidizing a mixture of titanium tetrahalide and a rutile forming agent, such as aluminum halide, present in the vapor phase and in the presence of a nucleant to form a gaseous suspension comprising titanium dioxide particles; b) passing the gaseous suspension to a cooling conduit; c) introducing scouring material into the cooling conduit; wherein the particles of the scouring material have a diameter in the range of about 0.25 mm to about 12.7 mm; d) separating the vapor phase to form a powder comprising the titanium dioxide particles and the scouring material; and e) simultaneously subjecting the powder to substantially uniform heating at a temperature of about 3000C to about 6000C and reducing the size of the titanium dioxide particles and the particles of the scouring material in the powder to a mean particle size of about 50 nm to about 1000 nm, whereby the titanium dioxide pigment has a chloride content of less than about 500 ppm. The so treated powder may have a residual free chlorine content of less than about 1 ppm. The Figure is a simplified flow diagram of one embodiment of the process of the disclosure wherein feedstreams comprising oxygen, titanium tetrachloride, a nucleant and a rutile forming agent are introduced to an oxidation zone 10 wherein, in the vapor phase, the titanium tetrachloride is oxidized to form a gaseous suspension comprising titanium dioxide particles, the gaseous suspension is transferred to a cooling conduit 12 wherein the gaseous suspension is contacted with scouring material to form a cooled product having a solid phase and a vapor phase. The vapor phase is separated from the solid phase via separator 14 to form a powder comprising titanium dioxide particles and the scouring material which is passed to a particle size reducing unit 16. The powder withdrawn from the unit can be subjected to surface treating in finishing unit 18.

    Abstract translation: 本公开涉及生产二氧化钛（TiO 2）颜料的方法，包括以下步骤：a）氧化存在于蒸气中的四卤化钛和金红石形成剂如卤化铝的混合物 并在成核剂存在下形成包含二氧化钛颗粒的气态悬浮液; b）将气态悬浮液通入冷却管道; c）将精练材料引入冷却管道; 其中所述精练材料的颗粒的直径在约0.25mm至约12.7mm的范围内; d）分离气相以形成包含二氧化钛颗粒和洗涤材料的粉末; 和e）在约300℃至约600℃的温度下同时对粉末进行基本均匀的加热，并将粉末中的二氧化钛颗粒和冲刷材料的颗粒的尺寸减小至约50nm至约的平均粒度 1000nm，由此二氧化钛颜料的氯化物含量小于约500ppm。 如此处理的粉末可具有小于约1ppm的残余游离氯含量。 该图是本公开方法的一个实施方案的简化流程图，其中将包含氧，四氯化钛，成核剂和金红石形成剂的进料流引入氧化区10，其中在气相中四氯化钛被氧化 为了形成包含二氧化钛颗粒的气态悬浮液，将气态悬浮液转移到冷却导管12中，其中气态悬浮液与冲刷材料接触以形成具有固相和气相的冷却产物。 通过分离器14将气相与固相分离，形成包含二氧化钛颗粒和洗涤材料的粉末，该粉末材料通过粒径减小单元16.从单元排出的粉末可以在整理单元中进行表面处理 18。

    SOLID FLOWABLE POWDER WITH HIGH LIQUID LOADING
    4.
    发明申请
    SOLID FLOWABLE POWDER WITH HIGH LIQUID LOADING 审中-公开
    具有高液体载荷的固体流动性粉末

    公开(公告)号：WO2004026950A3

    公开(公告)日：2004-07-01

    申请号：PCT/US0325882

    申请日：2003-08-14

    Applicant: DU PONT ,  DALZIEL SEAN MARK ,  GAI PRATIBHA LAXMAN ,  FRIEDMANN THOMAS E ,  ZHAO QIAN QUI ,  SCHURR GEORGE A

    Inventor： DALZIEL SEAN MARK ,  GAI PRATIBHA LAXMAN ,  FRIEDMANN THOMAS E ,  ZHAO QIAN QUI ,  SCHURR GEORGE A

    IPC: A61K9/14 ,  B01J2/00 ,  B05D7/00 ,  C08K20060101

    CPC classification number: A61K9/143 ,  B01J2/006 ,  B82Y30/00

    Abstract: A process of manufacturing compositions comprised of carrier particles under 100 nm that have been loaded to a level of greater that 60% by weight with a liquid comprising metering the liquid into a flow restrictor, injecting a gas stream through the flow restrictor to atomize the liquid and create a zone of turbulence at the outlet end of a flow restrictor, and introducing particles through a hopper (28) into the zone of turbulence to mix the particles with atomized liquid thereby loading the particles with the liquid. The hopper (28) includes metering device for accurately metering the particles at a particular ratio to the liquid feed from liquid inlet line (16). The highly-liquid-loaded particles can be further coated or encapsulated with functional coating or encapsulating materials.

    Abstract translation: 一种制造组合物的方法，该组合物由100nm以下的载体颗粒组成，该载体颗粒已经用包括将液体计量到限流器中的液体加载至大于60重量％的水平，将气流注入流量限制器以雾化液体 并在流量限制器的出口端产生湍流区域，并将颗粒通过料斗（28）引入湍流区域，以将颗粒与雾化液体混合，从而将颗粒与液体一起加载。 料斗（28）包括用于以与从液体入口管线（16）的液体进料的特定比例精确计量颗粒的计量装置。 高度液体负载的颗粒可以用功能性涂层或包封材料进一步涂覆或包封。

    FOOD PARTICAL ENCAPSULATION PRESERVING VOLATILES AND PREVENTING OXIDATION
    9.
    发明申请
    FOOD PARTICAL ENCAPSULATION PRESERVING VOLATILES AND PREVENTING OXIDATION 审中-公开
    保护挥发性物质和预防氧化的食物颗粒保护

    公开(公告)号：WO2004016509A3

    公开(公告)日：2004-10-14

    申请号：PCT/US0325868

    申请日：2003-08-14

    Applicant: DU PONT ,  DALZIEL SEAN MARK ,  FRIEDMANN THOMAS ,  SCHURR GEORGE A

    Inventor： DALZIEL SEAN MARK ,  FRIEDMANN THOMAS ,  SCHURR GEORGE A

    IPC: A23B4/00 ,  A23B9/14 ,  A23F5/14 ,  A23L1/00 ,  A23L1/22 ,  A23P1/08 ,  B01J13/04 ,  B65D20060101 ,  B65D1/00

    CPC classification number: A23F5/14 ,  A23L27/72 ,  A23P10/30 ,  A23P10/35 ,  A23V2002/00 ,  B01J13/04 ,  A23V2200/224 ,  A23V2250/1578 ,  A23V2250/628 ,  A23V2250/61

    Abstract: A process for encapsulating a solid food particle with a liquid encapsulating material comprising the steps of metering and encapsulation mixture (20) into a flow restrictor (14) concurrently a gas stream is introduced at inlet (22) into the flow restrictor there by atomizing the liquid encapsulating material and creating a turbulent flow zone at the oulet of the flow restrictor (14). Concomitant with metering the encapsulating material with the gas stream, solid food particulate (30) is introduced via hopper(28) to the turbulent zone at the outlet of the flow restrictor (14) wherein the solid food particles are encapsulating by the atomized encapsulating material, the encapsulated food particle inhibits environmental volatiles from diffusing into the food product while preventing oxidation of the food.

    Abstract translation: 用液体封装材料包封固体食物颗粒的方法包括以下步骤：将入口（22）计量并将混合物（20）同时包封在流量限制器（14）中，并通过雾化 液体封装材料，并在流量限制器（14）的底部产生湍流区域。 伴随着用气流计量封装材料，固体食物颗粒（30）通过料斗（28）引入流量限制器（14）的出口处的湍流区域，其中固体食物颗粒被雾化的包封材料 ，包封的食品颗粒抑制环境挥发物扩散到食品中，同时防止食物的氧化。

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