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    Compression set property in silylated polymers
    5.
    发明授权
    Compression set property in silylated polymers 有权
    甲硅烷基化聚合物的压缩性能

    公开(公告)号：US09181428B2

    公开(公告)日：2015-11-10

    申请号：US14342652

    申请日：2012-09-17

    申请人： Kamesh R. Vyakaranam ,  Ling Zhang ,  Venkat S. Minnikanti ,  Dwight Latham ,  Sara Arshad ,  Rajat Duggal ,  William A. Koonce

    发明人： Kamesh R. Vyakaranam ,  Ling Zhang ,  Venkat S. Minnikanti ,  Dwight Latham ,  Sara Arshad ,  Rajat Duggal ,  William A. Koonce

    IPC分类号： C08G77/06 ,  C08L71/00 ,  C08G65/336 ,  C08L101/10 ,  C08L71/02 ,  C08L75/08 ,  C08L75/04 ,  C08L83/00 ,  C08L83/06 ,  C08K5/00

    CPC分类号： C08L71/00 ,  C08G65/336 ,  C08K5/0025 ,  C08L71/02 ,  C08L75/04 ,  C08L75/08 ,  C08L83/00 ,  C08L83/06 ,  C08L101/10

    摘要： Moisture curable compositions including silylated polymers and methods for producing the same are provided. A two component moisture curable system for producing a cured or cross-linked silylated polymer having improved compression set properties is provided. The two component system comprises a first formulation and a second formulation. The first formulation comprises a silylated polymer, water, and filler and the second formulation comprises the silylated polymer, a curing catalyst comprising at least one Brønsted acid, and a moisture scavenger. The final cured formulation may have a compression set, determined by ASTM D395 or ISO 815-1, of less than 100%, and in some examples less than 50% and in some examples less than 15%. This demonstrated improvement in compression set not only allows the silylated polymers to be used in applications where cyclic loads are applied but also enhances product durability.

    摘要翻译： 提供了包含甲硅烷基化聚合物的水溶性组合物及其制备方法。 提供了用于制备具有改进的压缩永久变形特性的固化或交联的甲硅烷基化聚合物的双组分湿气可固化体系。 双组分体系包括第一制剂和第二制剂。 第一制剂包含甲硅烷基化聚合物，水和填料，第二制剂包含甲硅烷基化聚合物，包含至少一种布朗斯台德酸的固化催化剂和除湿剂。 最终固化的制剂可以具有通过ASTM D395或ISO 815-1测定的压缩永久变形小于100％，在一些实例中小于50％，在一些实例中小于15％。 这表明压缩变形的改进不仅允许将甲硅烷基化的聚合物用于应用循环载荷的应用中，而且可以提高产品的耐久性。

    Process for making low viscosity, fast curing silane terminated polymers
    6.
    发明授权
    Process for making low viscosity, fast curing silane terminated polymers 有权
    制备低粘度，快速固化硅烷封端聚合物的方法

    公开(公告)号：US08987401B2

    公开(公告)日：2015-03-24

    申请号：US14119072

    申请日：2012-06-14

    申请人： Kamesh R. Vyakaranam ,  Ling Zhang ,  Venkat S. Minnikanti ,  Rajat Duggal ,  William A. Koonce ,  Amarnath Singh ,  Phillip S. Athey

    发明人： Kamesh R. Vyakaranam ,  Ling Zhang ,  Venkat S. Minnikanti ,  Rajat Duggal ,  William A. Koonce ,  Amarnath Singh ,  Phillip S. Athey

    IPC分类号： C08G77/06 ,  C08G18/10 ,  C08G18/28 ,  C08G18/71 ,  C08G18/76

    CPC分类号： C08G18/10 ,  C08G18/289 ,  C08G18/718 ,  C08G18/7621 ,  C08G2190/00 ,  C08G18/4825 ,  C08G18/4829

    摘要： Methods of producing a composition comprising a crosslinkable silane-terminated polymer having at least one crosslinkable silyl group in each molecule are provided. The method may comprise providing a polymer having at least one unsaturated group and at least one alcohol hydroxyl group in each molecule and having a number average molecular weight between about 100 and about 5,000, adding to the polymer a compound having a hydrogen-silicon bond and a crosslinkable silyl group in each molecule and a hydrosilylation catalyst to thereby carry out a hydrosilylation reaction to form a composition comprising hydrosilylated polymers, wherein the hydrosilylation reaction has a hydrosilylation efficiency greater than 50% as determined by 1H-NMR, capping the hydrosilylated polymers by adding the hydrosilylated polymer to at least one isocyanate at an index of between about 100 and about 250, and reacting the isocyanate capped hydrosilylated polymer with a polyol having a nominal functionality of at least 2 to form the composition comprising a crosslinkable silane-terminated polymer.

    摘要翻译： 提供了包含在每个分子中具有至少一个交联性甲硅烷基的可交联硅烷封端的聚合物的组合物的方法。 该方法可以包括提供在每个分子中具有至少一个不饱和基团和至少一个醇羟基并且数均分子量在约100和约5,000之间的聚合物，向聚合物中加入具有氢 - 硅键的化合物和 每个分子中的可交联甲硅烷基和氢化硅烷化催化剂，由此进行氢化硅烷化反应以形成包含氢化硅烷化聚合物的组合物，其中氢化硅烷化反应的氢化硅烷化效率大于50％，如通过1 H-NMR确定的，氢化硅烷化聚合物由 将氢化硅烷化聚合物以约100至约250的指数加入到至少一种异氰酸酯中，并使异氰酸酯封端的硅烷化聚合物与标称官能度至少为2的多元醇反应，以形成包含可交联硅烷封端的聚合物的组合物。

    Tin free silyl-terminated polymers
    7.
    发明授权
    Tin free silyl-terminated polymers 有权
    无锡甲硅烷基封端的聚合物

    公开(公告)号：US08877885B2

    公开(公告)日：2014-11-04

    申请号：US13704162

    申请日：2011-06-29

    申请人： Kamesh R. Vyakaranam ,  Ling Zhang ,  William A. Koonce ,  Juan Carlos Medina ,  Ganesh Kailasam ,  Rajat Duggal ,  Nathan Wilmot

    发明人： Kamesh R. Vyakaranam ,  Ling Zhang ,  William A. Koonce ,  Juan Carlos Medina ,  Ganesh Kailasam ,  Rajat Duggal ,  Nathan Wilmot

    IPC分类号： C08G18/20

    CPC分类号： C08G18/222 ,  C08G18/18 ,  C08G18/20 ,  C08G18/289 ,  C08G18/3893 ,  C08G18/4825 ,  C08G18/718 ,  C08G18/7621 ,  C08G18/7671 ,  C08G18/837

    摘要： Embodiments of the invention provide for methods of producing a composition comprising a crosslinkable silane-terminated polymer having at least one crosslinkable silyl group in each molecule. The method comprises providing a polymer having at least one unsaturated group and at least one alcoholic hydroxyl group in each molecule, adding to the polymer a compound having a hydrogen-silicon bond and a crosslinkable silyl group in each molecule and a hydrosilylation catalyst to thereby carry out a hydrosilylation reaction to form a composition comprising hydrosilylated polyoxyalkylene polymers, reacting the hydrosilylated polyoxyalkylene polymers with at least one isocyanate in the presence of a first tin-free catalyst to form an isocyanate reacted hydrosilylated polymer, and optionally reacting the isocyanate reacted hydrosilylated polymer with a polyol having a nominal functionality of at least 2 to form a polyol reacted crosslinkable silane-terminated polymer.

    摘要翻译： 本发明的实施方案提供了制备包含在每个分子中具有至少一个可交联甲硅烷基的可交联的硅烷端基聚合物的组合物的方法。 该方法包括在每个分子中提供具有至少一个不饱和基团和至少一个醇羟基的聚合物，向该聚合物中加入每个分子中具有氢 - 硅键和交联性甲硅烷基的化合物和氢化硅烷化催化剂从而携带 进行氢化硅烷化反应以形成包含氢化硅烷化聚氧化烯聚合物的组合物，在第一无锡催化剂存在下使氢化硅烷化聚氧化烯聚合物与至少一种异氰酸酯反应，以形成异氰酸酯反应的氢化硅烷化聚合物，以及任选地使异氰酸酯反应的硅烷化聚合物与 具有至少2的标称官能度的多元醇以形成多元醇反应的可交联的硅烷封端的聚合物。

    Method and system for parallel reconstruction in the K-space domain for application in imaging systems
    10.
    发明授权
    Method and system for parallel reconstruction in the K-space domain for application in imaging systems 有权
    用于K-空间域并行重建的方法和系统用于成像系统

    公开(公告)号：US07840045B2

    公开(公告)日：2010-11-23

    申请号：US11737527

    申请日：2007-04-19

    申请人： Junyu Guo ,  Eugene G. Kholmovski ,  Ling Zhang ,  Dennis L. Parker

    发明人： Junyu Guo ,  Eugene G. Kholmovski ,  Ling Zhang ,  Dennis L. Parker

    IPC分类号： G06K9/00

    CPC分类号： G01R33/5611

    摘要： A method of performing parallel image reconstruction of undersampled image data in k-space. A defined partitioning of a k-space region into a plurality of segments is received. A segment of the plurality of segments is identified wherein data is sampled at less than a Nyquist rate. First imaging data is sampled at the Nyquist rate. A reconstruction coefficient is calculated for at least a portion of the identified segment using the sampled first imaging data. Second imaging data is sampled at less than the Nyquist rate. A value for a missing k-space sample in the identified segment is predicted using the calculated reconstruction coefficient and the sampled second imaging data. An image of the image area is defined using the predicted value and the received second dataset.

    摘要翻译： 在k空间中执行欠采样图像数据的并行图像重构的方法。 接收将k空间区域定义为多个段的划分。 识别多个片段中的片段，其中以小于奈奎斯特速率采样数据。 以奈奎斯特速率对第一成像数据进行采样。 使用所采样的第一成像数据，对识别出的片段的至少一部分计算重建系数。 第二个成像数据以低于奈奎斯特速率进行采样。 使用计算的重建系数和采样的第二成像数据来预测识别的段中缺少的k空间样本的值。 使用预测值和接收到的第二数据集来定义图像区域的图像。