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30 条记录 (耗时 0.032 秒)

    Polymerization catalyst systems and processes therefor and therewith
    21.
    发明授权
    Polymerization catalyst systems and processes therefor and therewith 有权
    聚合催化剂体系及其工艺及其

    公开(公告)号：US06525148B1

    公开(公告)日：2003-02-25

    申请号：US09640868

    申请日：2000-08-18

    申请人： Max P. McDaniel ,  Elizabeth A. Benham ,  Al R. Wolfe ,  Paul J. DesLauriers

    发明人： Max P. McDaniel ,  Elizabeth A. Benham ,  Al R. Wolfe ,  Paul J. DesLauriers

    IPC分类号： C08F452

    CPC分类号： F16L9/127 ,  C08F10/00 ,  C08F210/16 ,  Y10T428/139 ,  C08F4/69 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/07 ,  C08F2500/13 ,  C08F2500/04 ,  C08F4/025

    摘要： A copolymer of ethylene and a higher alpha olefin, preferably 1-hexene, can be produced using an activated chromium containing catalyst system and a cocatalyst selected from the group consisting of trialkylboron, trialkylsiloxyaluminum, and a combination of trialkylboron and trialkylaluminum compounds. The polymerization process must be carefully controlled to produce a copolymer resin having an exceptionally broad molecular weight distribution, extremely high PENT ESCR values, and a natural branch profile that impacts branching preferably into the high molecular weight portion of the polymer. The resulting copolymer resin is especially useful in high stiffness pipe applications.

    摘要翻译： 可以使用活化的含铬催化剂体系和选自三烷基硼，三烷基硅氧烷铝和三烷基硼和三烷基铝化合物的组合的助催化剂来制备乙烯和较高级α-烯烃（优选1-己烯）的共聚物。 聚合过程必须仔细控制，以产生具有非常宽的分子量分布，极高的PENT ESCR值和天然分支分布的共聚物树脂，其优选地影响聚合物的高分子量部分的分支。 所得共聚物树脂在高刚度管道应用中特别有用。

    Measurement of short chain branching in olefin copolymers using chemometric analysis
    26.
    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。

    Measurement of short chain branching in olefin copolymers using chemometric analysis
    27.
    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：US06632680B1

    公开(公告)日：2003-10-14

    申请号：US09667657

    申请日：2000-09-22

    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： G01N3344

    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测量中的统计误差作为其分子量分布函数的方法。

    Co-production of an alkenyl aromatic compound or precursor thereof and an oxygenated sulfur-containing compound
    29.
    发明授权
    Co-production of an alkenyl aromatic compound or precursor thereof and an oxygenated sulfur-containing compound 失效
    联合生产烯基芳族化合物或其前体和含氧化合物

    公开(公告)号：US5446227A

    公开(公告)日：1995-08-29

    申请号：US128498

    申请日：1993-09-07

    申请人： Paul J. DesLauriers ,  Michael S. Matson

    发明人： Paul J. DesLauriers ,  Michael S. Matson

    IPC分类号： C07C1/20 ,  C07C15/40 ,  C07C315/02 ,  C07C409/08 ,  C07C1/00

    CPC分类号： C07C409/08 ,  C07C1/20 ,  C07C15/40 ,  C07C315/02 ,  C07C407/00

    摘要： A process for co-production of an alkenyl aromatic compound such as, for example, styrene and t-butylstyrene, and an oxygenated sulfur-containing compound such as, for example, a sulfoxide or a sulfone is disclosed which comprises: (1) contacting, in the presence or absence of a catalyst, an .alpha.-methyl benzylic hydroperoxide with an organic sulfide compound to produce a mixture of an .alpha.-methyl benzylic hydroxide and an oxygenated sulfur-containing compound; (2) separating the .alpha.-methyl benzylic hydroxide from the sulfur-containing compound; (3) contacting the .alpha.-methyl benzylic hydroxide with a base to convert the .alpha.-methyl benzylic hydroxide to the alkenyl aromatic compound; and optionally, (4) recovering the alkenyl aromatic compound from the oxygenated sulfur-containing compound. The sulfoxide produced can be oxidized to a sulfone. The contacting of the .alpha.-methyl benzylic hydroxide with a base can also be carried out before the .alpha.-methyl benzylic hydroxide is separated from the oxygenated sulfur-containing compound followed by separation of the sulfur-containing compound.

    摘要翻译： 公开了一种共同制备链烯基芳族化合物如苯乙烯和叔丁基苯乙烯的方法和含氧化的含硫化合物，例如亚砜​​或砜，其包括：（1）接触 在存在或不存在催化剂的情况下，将α-甲基苄基氢过氧化物与有机硫化物混合以产生α-甲基苄基氢氧化物和含氧的含硫化合物的混合物; （2）从含硫化合物中分离α-甲基苄基氢氧化物; （3）使α-甲基苄基氢氧化物与碱反应以将α-甲基苄基氢氧化物转化为链烯基芳族化合物; 和（4）从含氧化合物中回收链烯基芳族化合物。 所生成的亚砜可以被氧化成砜。 α-甲基苄基氢氧化物与碱的接触也可以在将α-甲基苄基氢氧化物与含氧的含硫化合物分离，然后分离含硫化合物之前进行。

    Rust conversion composition
    30.
    发明授权
    Rust conversion composition 失效
    锈转化成分

    公开(公告)号：US4945017A

    公开(公告)日：1990-07-31

    申请号：US320842

    申请日：1989-03-03

    申请人： Paul J. DesLauriers ,  William J. Heilman

    发明人： Paul J. DesLauriers ,  William J. Heilman

    IPC分类号： C09D4/00 ,  C23C22/50

    CPC分类号： C23C22/50 ,  C09D4/00

    摘要： A composition for conversion of a rusted metal surface to form a durable coating thereon consists essentially of a reducing agent which reduces an trivalent iron present on the surface, an organic monomer to which is capable of polymerization on the surface in the presence of the reducing agent and a free radical initiator which polymerizes the organic monomer to form the durable coating.

    摘要翻译： 用于转化生锈的金属表面以形成耐久涂层的组合物基本上由还原剂组成，其还原存在于表面上的三价铁，在还原剂存在下能够在表面上聚合的有机单体 以及使有机单体聚合以形成耐久涂层的自由基引发剂。