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35 条记录 (耗时 0.053 秒)

    METHOD FOR EMPLOYING SEC-FTIR DATA TO PREDICT MECHANICAL PROPERTIES OF POLYETHYLENE
    22.
    发明申请
    METHOD FOR EMPLOYING SEC-FTIR DATA TO PREDICT MECHANICAL PROPERTIES OF POLYETHYLENE 有权
    使用SEC-FTIR数据预测聚乙烯的机械性能的方法

    公开(公告)号：US20100319440A1

    公开(公告)日：2010-12-23

    申请号：US12868552

    申请日：2010-08-25

    申请人： Paul J. DesLauriers ,  David C. Rohlfing

    发明人： Paul J. DesLauriers ,  David C. Rohlfing

    IPC分类号： G01N9/00

    CPC分类号： C08F10/00 ,  C08F2400/02 ,  C08L23/04 ,  G01N21/3563 ,  G01N30/02 ,  G01N33/442 ,  G01N2021/3595 ,  Y10T436/25 ,  C08F2/00 ,  C08L2666/04 ,  B01D15/34

    摘要： The present invention provides several methods of determining values of physical or chemical properties of polymers. In these methods, at least two polymer training samples are provided. Characteristics of the polymer microstructures of the training samples are correlated with values of physical or chemical properties of the training samples. These correlations are subsequently applied to the respective characteristics of polymer test samples in order to determine the values of physical or chemical properties of the test samples.

    摘要翻译： 本发明提供了确定聚合物的物理或化学性质的几种方法。 在这些方法中，提供至少两种聚合物训练样品。 训练样本的聚合物微观结构的特征与训练样本的物理或化学性质的值相关。 随后将这些相关性应用于聚合物测试样品的相应特征，以确定测试样品的物理或化学性质的值。

    System and method for estimating density of a polymer
    29.
    发明申请
    System and method for estimating density of a polymer 审中-公开
    用于估计聚合物密度的系统和方法

    公开(公告)号：US20110035193A1

    公开(公告)日：2011-02-10

    申请号：US12462713

    申请日：2009-08-07

    申请人： Paul J. Deslauriers ,  David C. Rohlfing

    发明人： Paul J. Deslauriers ,  David C. Rohlfing

    IPC分类号： G06F17/10

    CPC分类号： G01N9/00

    摘要： Systems and methods for predicting or calculating a virtual polymer property that is related to polymer architecture of a semi-crystalline polymer or calculating various virtual polymer properties related to polymer architecture as a means to design resins for particular end-use applications that require various mechanical and physical properties.

    摘要翻译： 用于预测或计算与半结晶聚合物的聚合物结构相关的虚拟聚合物性质的系统和方法，或计算与聚合物结构相关的各种虚拟聚合物性质，作为为特定最终用途应用设计树脂的手段，其需要各种机械和 物理性质。

    Measurement of short chain branching in olefin copolymers using chemometric analysis
    30.
    发明授权
    Measurement of short chain branching in olefin copolymers using chemometric analysis 有权
    使用化学计量分析测量烯烃共聚物中的短链支化

    公开(公告)号：US07056744B2

    公开(公告)日：2006-06-06

    申请号：US10463849

    申请日：2003-06-16

    申请人： Paul J. DesLauriers ,  David C. Rohlfing ,  Alan D. Eastman ,  Eric T. Hsieh

    发明人： Paul J. DesLauriers ,  David C. Rohlfing ,  Alan D. Eastman ,  Eric T. Hsieh

    IPC分类号： G01N33/44 ,  G01N21/00

    CPC分类号： G01N21/359 ,  G01N21/3577 ,  G01N2021/3595 ,  Y10T436/21

    摘要： A method of determining the proportion of short-chain branching in an olefin copolymer process stream is disclosed. The short-chain branching may also be determined as a function of molecular weight in a sample having a range of molecular weights. In the method, at least two olefin copolymer training samples are provided. The respective samples have different, known proportions of short-chain branching. The infrared (e.g. FT-IR) absorbance spectra of the training samples in a wavenumber range are obtained. Calibration information is determined from the training samples by chemometrically correlating the differences in the infrared absorbance spectra of the training samples to the differences in the degree of short-chain branching in the training samples. This step generates calibration information that allows the degree of short-chain branching in a sample to be determined once its infrared absorbance spectrum is obtained. A method for determining the statistical error in the measurement of short-chain branching in an olefin polymer sample as a function of its molecular weight distribution is also disclosed.

    摘要翻译： 公开了一种确定烯烃共聚物工艺流中短链支化比例的方法。 短链支化也可以在具有分子量范围的样品中作为分子量的函数来确定。 在该方法中，提供至少两种烯烃共聚物训练样品。 各样品具有不同的已知比例的短链支化。 获得波数范围内训练样本的红外（例如FT-IR）吸收光谱。 通过化学方法将训练样本的红外吸收光谱的差异与训练样本中短链分支程度的差异化学相关，从训练样本中确定校准信息。 该步骤产生校准信息，其允许在获得样品的红链吸收光谱后测定样品中的短链支化度。 还公开了用于确定烯烃聚合物样品中短链支化的测量中的统计误差作为其分子量分布的函数的方法。