Conjugated diene polymers and copolymer blocks having high vinyl content prepared using mixed microstructure control agents and process for preparing same
    1.
    发明授权
    Conjugated diene polymers and copolymer blocks having high vinyl content prepared using mixed microstructure control agents and process for preparing same 有权
    使用混合微结构控制剂制备具有高乙烯基含量的共轭二烯聚合物和共聚物嵌段及其制备方法

    公开(公告)号:US07166679B2

    公开(公告)日:2007-01-23

    申请号:US10946878

    申请日:2004-09-22

    IPC分类号: C08L53/00

    CPC分类号: C08F297/04 C08F36/04 C08F4/48

    摘要: Disclosed is a process for preparing polymers and copolymer blocks of conjugated dienes with high amounts of branching, commonly referred to as vinyl content, comprising the use of at least two microstructure control agents. One of the microstructure control agents can be a bulk microstructure control agents such as diethyl ether. The other microstructure control agent is a specific microstructure control agent such as 1,2-diethoxypropane. The use of a bulk and a specific microstructure control agent together can allow for the production of high levels of vinyl content at high polymerization rates without the undesirable affects experienced with either one alone.

    摘要翻译: 公开了一种制备具有大量支化的共轭二烯的聚合物和共聚物嵌段的方法,通常称为乙烯基含量,包括使用至少两种微结构控制剂。 微结构控制剂之一可以是块状微结构控制剂如二乙醚。 其他微结构控制剂是一种特殊的微结构控制剂,如1,2-二乙氧基丙烷。 将本体和特定的微结构控制剂一起使用可以允许在高聚合速率下生产高含量的乙烯基含量,而无需单独使用任何一种所不希望的影响。

    PURIFICATION OF BIOLOGICAL CONJUGATES BY SIZE EXCLUSION CHROMATOGRAPHY
    3.
    发明申请
    PURIFICATION OF BIOLOGICAL CONJUGATES BY SIZE EXCLUSION CHROMATOGRAPHY 审中-公开
    通过尺寸排除色谱法纯化生物学结合

    公开(公告)号:US20100056766A1

    公开(公告)日:2010-03-04

    申请号:US12199047

    申请日:2008-08-27

    IPC分类号: C07K1/00

    摘要: A method for separating a biological conjugate from an aggregate. The molecular weight of the biological conjugate ranges from about 10 kDa to about 1000 kDa. In one embodiment, the method comprises the steps of: (e) providing a mixture comprising the biological conjugate and the aggregate, wherein the biological conjugate has a molecular weight of from about 10 kDa to about 1000 kDa; (f) providing a chromatography column containing a gel, wherein the gel comprises at least one polysaccharide; (g) introducing the mixture of step (a) into the chromatography column; (h) recovering the biological conjugate from the column.

    摘要翻译: 从聚集体中分离生物缀合物的方法。 生物结合物的分子量范围为约10kDa至约1000kDa。 在一个实施方案中,该方法包括以下步骤:(e)提供包含生物缀合物和聚集体的混合物,其中生物缀合物具有约10kDa至约1000kDa的分子量; (f)提供含有凝胶的色谱柱,其中所述凝胶包含至少一种多糖; (g)将步骤(a)的混合物引入色谱柱; (h)从柱中回收生物缀合物。

    Method for making selectively hydrogenated block copolymers of vinyl aromatic hydrocarbons and conjugated dienes
    4.
    发明授权
    Method for making selectively hydrogenated block copolymers of vinyl aromatic hydrocarbons and conjugated dienes 有权
    制备乙烯基芳烃和共轭二烯的选择性氢化嵌段共聚物的方法

    公开(公告)号:US07390856B2

    公开(公告)日:2008-06-24

    申请号:US10362145

    申请日:2001-08-24

    IPC分类号: C08C19/02 C08F236/10

    CPC分类号: C08F297/04 C08F8/04

    摘要: Disclosed is a method for making selectively hydrogenated block copolymers of vinyl aromatic hydrocarbons and conjugated dienes comprising: a) anionically polymerizing vinyl aromatic hydrocarbons and conjugated dienes to produce block copolymers with living chain ends; b) terminating the living chain ends; to produce a terminated block copolymer, with a member from the group consisting of an alcohol, hydrogen, and mixtures thereof, to prepare a terminated block copolymer; and c) contacting the terminated block copolymers with hydrogen at a temperature of from 20 to 175° C. in the presence of a catalyst prepared by combining a cobalt carboxylate with an aluminum alkyl, wherein: (i) if the polymer is terminated with an alcohol and the alcohol is a linear alcohol, the linear alcohol is used to terminate the living chain ends in an amount such that the alcohol:living chain end molar ratio is from 0.05 to 1.2: (ii) if the polymer is terminated with an alcohol and the alcohol is a branched alcohol, the branched alcohol is used to terminate the living chain ends in an amount such that the alcohol:living chain end molar ration is from 0.05 to about 3.0: an (iii) if the polymer is terminated with an alcohol and the alcohol is a mixture of a linear alcohol and a branched alcohol, the linear alcohol is used to terminate the living chain ends in an amount such that the linear alcohol:living chain end molar ration is from 0.05 to 1.2.

    摘要翻译: 公开了一种制备乙烯基芳烃和共轭二烯的选择性氢化嵌段共聚物的方法,包括:a)阴离子聚合乙烯基芳族烃和共轭二烯以产生具有活性链末端的嵌段共聚物; b)终止生命终端; 以制备封端的嵌段共聚物,其中包含醇,氢及其混合物的成员,以制备封端的嵌段共聚物; 和c)在通过将羧酸钴与烷基铝结合而制备的催化剂存在下,在20至175℃的温度下使封端的嵌段共聚物与氢接触,其中:(i)如果聚合物用 醇和醇是直链醇,直链醇用于终止活性链末端,使得醇:活性链末端摩尔比为0.05至1.2:(ii)如果聚合物用醇终止 并且醇是支链醇,支链醇用于终止活性链末端,其量使得醇:活性链末端摩尔比为0.05至约3.0:(iii)如果聚合物以 醇和醇是直链醇和支链醇的混合物,直链醇用于以直链醇:活性链末端摩尔比为0.05至1.2的量终止活性链末端。

    Process for making microporous membranes having gel-filled pores, and
separations methods using such membranes
    6.
    发明授权
    Process for making microporous membranes having gel-filled pores, and separations methods using such membranes 失效
    制造具有凝胶填充孔的微孔膜的方法和使用这种膜的分离方法

    公开(公告)号:US5160627A

    公开(公告)日:1992-11-03

    申请号:US815297

    申请日:1991-12-27

    IPC分类号: B01D67/00 B01D69/10 B01D69/14

    摘要: A process is provided for modifying the properties of a hydrophobic microporous membrane which includes the steps of first providing a hydrophobic microporous membrane, treating it with a surfactant to render the membrane hydrophilic, wetting the membrane with an aqueous solution of a polyol such as polyvinyl alcohol (PVA) and divinyl sulfone (DVS) or a precursor thereof, washing the membrane with water to displace the polyol/DVA from the exterior of the membrane while retaining it in the pores of the membrane, and crosslinking the polyol/DVS into an aqueous gel to yield a hydrophilic microporous membrane having pores filled with an aqueous polyol/DVS gel, the exterior of the membrane being unobstructed by gel. The modified membranes produced according to the process are useful in carrying out chromatographic separations.

    摘要翻译: 提供了一种用于改性疏水性微孔膜的性质的方法,该方法包括以下步骤:首先提供疏水性微孔膜,用表面活性剂处理以使膜具有亲水性,用多元醇水溶液润湿膜,例如聚乙烯醇 (PVA)和二乙烯基砜(DVS)或其前体,用水洗涤膜以将多元醇/ DVA从膜的外部置换,同时将其保留在膜的孔中,并将多元醇/ DVS交联成水 凝胶以产生具有填充有水性多元醇/ DVS凝胶的孔的亲水微孔膜,膜的外部不被凝胶阻挡。 根据该方法制备的改性膜可用于进行色谱分离。