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8 条记录 (耗时 0.018 秒)

    Hydrolysis of polyvinyl aklaenoates
    1.
    发明授权
    Hydrolysis of polyvinyl aklaenoates 失效
    聚烯烃烯烃的水解

    公开(公告)号：US5753753A

    公开(公告)日：1998-05-19

    申请号：US803172

    申请日：1997-02-19

    申请人： Kien Van Phung ,  Dennis Sagl

    发明人： Kien Van Phung ,  Dennis Sagl

    IPC分类号： C08F8/12 ,  C08K3/00 ,  C08F16/06

    CPC分类号： C08K3/0008 ,  C08F8/12 ,  C08F2800/10

    摘要： This invention relates to an improved process for producing a vinyl alcohol containing polymer having a narrow particle size without substantial reactor fouling. The process for producing the vinyl alcohol containing polymer involves hydrolyzing a vinyl ester containing polymer, e.g., a polymer containing polymerized vinyl alkanoate units in the presence of an alcoholic medium and a hydrolysis catalyst in the presence of an alcoholic medium having finely divided, inert material such as an alkali metal carbonate dispersed therein. The finely divided inert material acts as nucleating sites for the polyvinyl alcohol as it precipitates from the solution during hydrolysis.

    摘要翻译： 本发明涉及一种改进的具有窄的粒度的含乙烯醇的聚合物的方法，而没有实质的反应器结垢。 制备含乙烯醇的聚合物的方法包括在含有细分惰性材料的醇介质存在下，在含醇介质和水解催化剂的存在下水解含乙烯基酯的聚合物，例如含有聚合的乙烯基链烷酸酯单元的聚合物 例如分散在其中的碱金属碳酸盐。 精细分散的惰性材料作为聚乙烯醇的成核位置，因为它在水解过程中从溶液中沉淀出来。

    Process for making low color polyvinyl alcohol
    2.
    发明申请
    Process for making low color polyvinyl alcohol 审中-公开
    制备低色度聚乙烯醇的方法

    公开(公告)号：US20090163658A1

    公开(公告)日：2009-06-25

    申请号：US12317114

    申请日：2008-12-19

    申请人： Florin Barsan ,  Kien Van Phung ,  Jeffrey Hunt Thompson

    发明人： Florin Barsan ,  Kien Van Phung ,  Jeffrey Hunt Thompson

    IPC分类号： C08G63/91

    CPC分类号： B32B17/10761 ,  C08F8/12 ,  C08F8/48 ,  C08F118/08 ,  C08F8/28 ,  C08F216/06 ,  C08F218/08

    摘要： A process is provided for the manufacture of polyvinyl alcohol, having an APHA color of equal to or less than about 10, by polymerizing a vinyl acetate monomer to form polyvinyl acetate and then hydrolyzing the polyvinyl acetate to form polyvinyl alcohol wherein the vinyl acetate monomer is characterized as having an inhibitor level of equal to or less than about 10 ppm, preferably less than about 5 ppm, more preferably less than about 3 ppm, even more preferably less than about 1 ppm.

    摘要翻译： 通过聚合乙酸乙烯酯单体形成聚乙酸乙烯酯，然后水解聚乙酸乙烯酯以形成聚乙烯醇，其中乙酸乙烯酯单体是聚乙烯醇单体，其中APHA颜色等于或小于约10，制备聚乙烯醇的方法 其特征在于具有等于或小于约10ppm，优选小于约5ppm，更优选小于约3ppm，甚至更优选小于约1ppm的抑制剂水平。

    Amphiphilic monomer and hydrophobe associative composition containing a polymer of a water-soluble monomer and said amphiphilic monomer
    3.
    发明授权
    Amphiphilic monomer and hydrophobe associative composition containing a polymer of a water-soluble monomer and said amphiphilic monomer 失效
    含有水溶性单体和所述两亲性单体的聚合物的两亲性单体和疏水缔合组合物

    公开(公告)号：US4728696A

    公开(公告)日：1988-03-01

    申请号：US803757

    申请日：1985-12-02

    申请人： Kien Van Phung ,  Syamalarao Evani

    发明人： Kien Van Phung ,  Syamalarao Evani

    IPC分类号： C08F220/58 ,  C09K3/00 ,  C09K8/035 ,  C09K8/588 ,  C09K8/62 ,  C10M173/02 ,  C08F20/58

    CPC分类号： C10M173/02 ,  C08F220/58 ,  C09K8/035 ,  C09K8/588 ,  C09K8/68 ,  C10M2201/02 ,  C10M2217/022 ,  C10M2217/024 ,  C10M2217/06 ,  C10M2221/02 ,  C10N2240/08 ,  C10N2250/02 ,  Y10S507/922 ,  Y10S507/936

    摘要： The invention comprises a composition comprising at least one compound defined by the formula ##STR1## wherein R is hydrogen, C.sub.1-4 alkyl or a group ##STR2## wherein G is a divalent hydrocarbyl-linking group and J, D, E and F are hereinafter defined; wherein J and E independently are divalent linking groups selected from ##STR3## wherein R' is hydrogen or C.sub.1-4 alkyl; D is a divalent hydrocarbyl group which lends hydrophobicity to the compound; and F is a monovalent hydrocarbyl group which lends hydrophilicity to the compound. Such compositions are useful as comonomers with water-soluble monomers such as acrylamide and acrylic acid which form water-dispersible thickening agents which are resistant to shear degradation and heat and have a broad range of salt tolerance. Aqueous solutions thickened with such copolymers are useful in enhanced oil recovery processes as fluid mobility control agents, as fracturing fluids and drilling muds as well as hydraulic fluids and lubricants in many applications.

    摘要翻译： 本发明包括一种组合物，其包含至少一种由下式定义的化合物：其中R为氢，C 1-4烷基或基团，其中G为二价烃基连接基团，J，D，E和F为 以下定义; 其中J和E独立地是选自以下的二价连接基团：其中R'是氢或C 1-4烷基; D是赋予化合物疏水性的二价烃基; F是赋予化合物亲水性的一价烃基。 这样的组合物可用作具有水溶性单体如丙烯酰胺和丙烯酸的共聚单体，其形成耐剪切降解和热并具有宽范围耐盐性的水分散性增稠剂。 用这种共聚物增稠的水溶液可用作增强的油回收方法，作为流体流动控制剂，作为压裂液和钻井泥浆以及许多应用中的液压流体和润滑剂。

    IMPROVED NVF COPOLYMER PROCESS
    4.
    发明申请
    IMPROVED NVF COPOLYMER PROCESS 审中-公开
    改进的NVF共聚物工艺

    公开(公告)号：US20110160418A1

    公开(公告)日：2011-06-30

    申请号：US12998026

    申请日：2009-09-11

    申请人： Richard Vicari ,  Florin Barsan ,  Kien Van Phung

    发明人： Richard Vicari ,  Florin Barsan ,  Kien Van Phung

    IPC分类号： C08F226/02

    CPC分类号： C08F8/12 ,  C08F218/08 ,  C08F2218/22

    摘要： Disclosed herein is a water-soluble copolymer formed by copolymerizing N-vinylformamide and one or more vinyl C1-C10 alkyl esters, and then hydrolyzing from 30 to 100 mol % of the formyl groups from the copolymerized units to form amino groups and from 30 to 100 mol % of the C1-C10 alkyl ester groups from the copolymerized units to form hydroxyl groups, wherein the copolymer has a unimodal molecular weight distribution as evidenced by essentially one peak in a gel permeation gradient elution chromatographic analysis. A process to produce the polymer is also disclosed.

    摘要翻译： 本文公开了通过将N-乙烯基甲酰胺和一种或多种乙烯基C1-C10烷基酯共聚而形成的水溶性共聚物，然后从共聚单元中将30-100mol％的甲酰基水解形成氨基，并从30至 100摩尔％的来自共聚单元的C 1 -C 10烷基酯基团以形成羟基，其中共聚物具有单峰分子量分布，如在凝胶渗透梯度洗脱色谱分析中基本上一个峰所证明的。 还公开了制备聚合物的方法。

    Non yellowing, thermally stable polyvinyl alcohol
    7.
    发明授权
    Non yellowing, thermally stable polyvinyl alcohol 失效
    不变黄，热稳定的聚乙烯醇

    公开(公告)号：US6046272A

    公开(公告)日：2000-04-04

    申请号：US15560

    申请日：1998-01-29

    申请人： Kien Van Phung

    发明人： Kien Van Phung

    IPC分类号： C08F8/12 ,  C08F16/06 ,  C08F116/06 ,  C08F216/06 ,  C08G63/48 ,  C08G63/91

    CPC分类号： C08F8/12

    摘要： A process for making a thermally stable and substantially low yellow polyvinyl alcohol, and a process for reversing discoloration of polyvinyl alcohol. The process consists of treating polyvinyl acetate before saponification or treating polyvinyl alcohol after saponification with a small amount of a reducing phosphorus-containing compound and, optionally, a trace amount of a peroxide. This invention is particularly useful in producing low molecular weight polyvinyl alcohol which is thermally stable and low in yellow color.

    摘要翻译： 一种制备热稳定且基本上低的黄色聚乙烯醇的方法，以及用于反转聚乙烯醇变色的方法。 该方法包括在皂化之前处理聚乙酸乙烯酯或用少量还原性含磷化合物和任选的微量过氧化物皂化后处理聚乙烯醇。 本发明特别适用于制造热稳定性低，黄色低的低分子量聚乙烯醇。