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    Latex for low VOC paint having improved block resistance, open time and water-softening resistance
    1.
    发明申请
    Latex for low VOC paint having improved block resistance, open time and water-softening resistance 审中-公开
    具有改善阻块性，开放时间和耐水软化性的低VOC涂料的乳胶

    公开(公告)号：US20080058473A1

    公开(公告)日：2008-03-06

    申请号：US11513859

    申请日：2006-08-31

    申请人： Yakov Freidzon ,  Ning Wu ,  Michael Bochnik ,  Robert Sheerin ,  Barry Chadwick

    发明人： Yakov Freidzon ,  Ning Wu ,  Michael Bochnik ,  Robert Sheerin ,  Barry Chadwick

    IPC分类号： C08F8/00

    CPC分类号： C08F2/22 ,  C08F220/00 ,  C08F220/12 ,  C08F257/02 ,  C08F265/04 ,  C08F265/06 ,  C08F285/00 ,  C08L51/003 ,  C09D151/003 ,  C08L2666/02

    摘要： The invention is directed to latex compositions comprising sequentially designed polymer having a first stage, a second stage and a third stage corresponding to a seed, a core and a shell. The latex polymer is suitable for aqueous low volatile organic compounds (“VOC”) paint (less than 50 g/L) with good block resistance, improved open time and increased water softening resistance. To attain good block resistance, the seed and the core contain monomers that form polymers with relatively harder characteristics and higher glass transition temperature (“Tg”) while the shell contains monomers that form polymers with softer characteristics and lower Tg. To gain improved open time, the latex polymer contains suitable level of hydrophilic monomers necessary to hold water. To achieve water softening resistance, hydrophobic monomers are grafted on hydrophilic portions of the shell or the core layers. The invention is also directed to the process of making the latex by a sequential emulsion polymerization.

    摘要翻译： 本发明涉及包含依次设计的聚合物的胶乳组合物，其具有对应于种子，核和壳的第一阶段，第二阶段和第三阶段。 胶乳聚合物适用于低挥发性有机化合物（“VOC”）油漆（小于50g / L），具有良好的耐粘连性，改善的开放时间和增加的耐水软化性。 为了获得良好的耐阻断性，种子和芯包含形成具有较硬特性和较高玻璃化转变温度（“T”g“）的聚合物的单体，而壳包含形成具有较软特性的聚合物的单体， 较低的T 。 为了获得改善的开放时间，胶乳聚合物含有合适水平的保持水所需的亲水单体。 为了获得耐水软化性，将疏水性单体接枝在壳或芯层的亲水部分上。 本发明还涉及通过连续乳液聚合制备胶乳的方法。

    Latex Based Open-Time Extenders for Low VOC Paints
    3.
    发明申请
    Latex Based Open-Time Extenders for Low VOC Paints 有权
    基于乳胶的低挥发性有机油涂料的开放式增量剂

    公开(公告)号：US20090227705A1

    公开(公告)日：2009-09-10

    申请号：US12042841

    申请日：2008-03-05

    申请人： Michael Bochnik ,  Yakov Freidzon ,  Robert Sheerin ,  Ning Wu

    发明人： Michael Bochnik ,  Yakov Freidzon ,  Robert Sheerin ,  Ning Wu

    IPC分类号： C09D5/16 ,  C08L25/10

    CPC分类号： C09D5/024 ,  C08L25/08 ,  C09D7/46 ,  C09D7/47 ,  C09D133/00

    摘要： The present invention relates to paint extenders or open-time extenders, which are mixed with an architectural coating, such as aqueous latex paints, to increase the coating's open time. The open-time extender comprises acrylic or vinyl latex particles having a mean diameter of less than about 150 nm, and at least one crosslinkable monomer that can crosslink the latex particles in the open-time extender to the latex particles in the architectural coating at ambient conditions. The open-time extender also comprises water and the total solid content of the open-time extender is less than about 15% by weight.

    摘要翻译： 本发明涉及涂料增量剂或开放式增量剂，其与建筑涂料如水性乳胶漆混合，以增加涂料的开放时间。 开放时间延长剂包括平均直径小于约150nm的丙烯酸或乙烯基胶乳颗粒，以及至​​少一种可交联单体，其可将开放时间延长剂中的胶乳颗粒与环境中的建筑涂料中的胶乳颗粒交联 条件。 开放式增量剂还包含水，而开放时间增量剂的总固体含量小于约15重量％。

    Latex based open-time extenders for low VOC paints
    5.
    发明授权
    Latex based open-time extenders for low VOC paints 有权
    乳胶为基础的低VOC涂料的开放时间延长剂

    公开(公告)号：US08034871B2

    公开(公告)日：2011-10-11

    申请号：US12042841

    申请日：2008-03-05

    申请人： Michael Bochnik ,  Yakov Freidzon ,  Robert Sheerin ,  Ning Wu

    发明人： Michael Bochnik ,  Yakov Freidzon ,  Robert Sheerin ,  Ning Wu

    IPC分类号： C08L31/00 ,  C08L25/10 ,  C09D5/16

    CPC分类号： C09D5/024 ,  C08L25/08 ,  C09D7/46 ,  C09D7/47 ,  C09D133/00

    摘要： The present invention relates to paint extenders or open-time extenders, which are mixed with an architectural coating, such as aqueous latex paints, to increase the coating's open time. The open-time extender comprises acrylic or vinyl latex particles having a mean diameter of less than about 150 nm, and at least one crosslinkable monomer that can crosslink the latex particles in the open-time extender to the latex particles in the architectural coating at ambient conditions. The open-time extender also comprises water and the total solid content of the open-time extender is less than about 15% by weight.

    摘要翻译： 本发明涉及涂料增量剂或开放式增量剂，其与建筑涂料如水性乳胶漆混合，以增加涂料的开放时间。 开放时间延长剂包括平均直径小于约150nm的丙烯酸或乙烯基胶乳颗粒，以及至​​少一种可交联单体，其可将开放时间延长剂中的胶乳颗粒与环境中的建筑涂料中的胶乳颗粒交联 条件。 开放式增量剂还包含水，而开放时间增量剂的总固体含量小于约15重量％。

    Enzymatic Assays Using Umbelliferone Substrates with Cyclodextrins in Droplets of Oil
    9.
    发明申请
    Enzymatic Assays Using Umbelliferone Substrates with Cyclodextrins in Droplets of Oil 有权
    使用伞形酮底物与环糊精在油滴中的酶检测

    公开(公告)号：US20110118132A1

    公开(公告)日：2011-05-19

    申请号：US13012831

    申请日：2011-01-25

    申请人： Theodore Winger ,  Allen E. Eckhardt ,  Carrie Graham ,  Ramakrishna Sista ,  Vamsee K. Pamula ,  Tong Wang ,  Yalin Xiong ,  Ning Wu ,  Sanjay Saha ,  Gajendrasinh Balvantsinh Raolji ,  Raveendra Dayam

    发明人： Theodore Winger ,  Allen E. Eckhardt ,  Carrie Graham ,  Ramakrishna Sista ,  Vamsee K. Pamula ,  Tong Wang ,  Yalin Xiong ,  Ning Wu ,  Sanjay Saha ,  Gajendrasinh Balvantsinh Raolji ,  Raveendra Dayam

    IPC分类号： C40B30/00 ,  C12Q1/00

    CPC分类号： C12Q1/00

    摘要： The invention is directed to droplet actuator devices and assay methods. The method may include, among other things, a method of conducting enzymatic assays using umbelliferone substrates with cyclodextrins in droplets in oil, the method including incubating a droplet in oil, the droplet preferably comprising an umbelliferone substrate, a sample, and a cyclodextrin compound. The methods may further include a method of substantially eliminating cross-contamination between droplets in enzymatic containing substrate-based bioassays. The method may include immobilization of the enzymatic substrate including forming an inclusion complex with the substrate for stabilizing the substrate within an aqueous environment, wherein the inclusion complex may be formed using cyclodextrins. In yet another embodiment, the invention may provide a method of enhancing hydrolysis of enzymatic substrates. The methods may further include a method of forming an inclusion complex with the substrate for stabilizing the substrate within an aqueous environment, wherein the substrate may be a 4-MU- or HMU containing substrate. The inclusion complex may be formed using cyclodextrin.

    摘要翻译： 本发明涉及液滴致动器装置和测定方法。 该方法尤其可以包括使用具有环糊精的伞形酮底物在油中的液滴进行酶测定的方法，所述方法包括将液滴在油中孵育，所述液滴优选包含伞形酮底物，样品和环糊精化合物。 所述方法还可以包括基本上消除含酶底物生物测定中的液滴之间的交叉污染的方法。 该方法可以包括固定酶底物，包括与底物形成包合物以使其在水性环境中稳定，其中包合物可以使用环糊精形成。 在另一个实施方案中，本发明可提供增强酶底物水解的方法。 所述方法还可以包括在水性环境中与基材形成包含配合物以稳定基材的方法，其中所述基材可以是含有4-MU-或HMU的底物。 包合物可以使用环糊精形成。