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10 条记录 (耗时 0.027 秒)

    Purification of 1,3-butadiene
    2.
    发明授权
    Purification of 1,3-butadiene 失效
    1,3-丁二烯的纯化

    公开(公告)号：US6093285A

    公开(公告)日：2000-07-25

    申请号：US144117

    申请日：1998-08-31

    申请人： Daniel T. Fernald ,  Stephen L. Ege ,  Si M. Nguyen ,  Richard Peacock ,  Larry L. Nash ,  George A. Moczygemba

    发明人： Daniel T. Fernald ,  Stephen L. Ege ,  Si M. Nguyen ,  Richard Peacock ,  Larry L. Nash ,  George A. Moczygemba

    IPC分类号： B01D3/14 ,  C07C7/04 ,  B01D3/00 ,  C07C51/44

    CPC分类号： B01D3/14 ,  C07C7/04 ,  B01J2219/30 ,  Y10S203/20

    摘要： A system and process for purifying a 1,3-butadiene feedstock containing 1,3-butadiene and various impurities by first introducing the 1,3-butadiene feedstock stream to a separation column to produce an intermediate product stream containing 1,3-butadiene and residual impurities and then introducing the produced intermediate product stream through a condenser to a suitable dryer for removing residual impurities from the intermediate product stream and thereby forming a purified 1,3-butadiene stream. The separation column separates an overhead stream, containing 1,3-butadiene and impurities such as propadiene, water and oxygen, and a bottoms stream, containing impurities such as polymerization inhibitor, ethyl acetylene, 1,3-butadiene dimer, pentane and 1,2-butadiene, from the intermediate product stream which leaves the separation column in the form of a vapor side draw stream.

    摘要翻译： 一种用于纯化含有1,3-丁二烯和各种杂质的1,3-丁二烯原料的系统和方法，首先将1,3-丁二烯原料流引入分离塔以产生含有1,3-丁二烯和 然后将产生的中间产物流通过冷凝器引入合适的干燥器中，以从中间产物流中除去残留的杂质，从而形成纯化的1,3-丁二烯流。 分离塔分离含有1,3-丁二烯和杂质如丙二烯，水和氧的塔顶物流和含有杂质的底部物流，如阻聚剂，乙炔乙炔，1,3-丁二烯二聚物，戊烷和1， 来自以蒸气侧牵引流形式离开分离塔的中间产物流。

    Block copolymers of monovinylarenes and conjugated dienes and preparation thereof
    3.
    发明授权
    Block copolymers of monovinylarenes and conjugated dienes and preparation thereof 失效
    单乙烯基芳烃和共轭二烯的嵌段共聚物及其制备

    公开(公告)号：US5705569A

    公开(公告)日：1998-01-06

    申请号：US651082

    申请日：1996-05-22

    申请人： George A. Moczygemba ,  Larry L. Nash ,  William J. Trepka ,  Craig D. DePorter ,  Nathan E. Stacy ,  Ralph C. Farrar ,  Charles M. Selman

    发明人： George A. Moczygemba ,  Larry L. Nash ,  William J. Trepka ,  Craig D. DePorter ,  Nathan E. Stacy ,  Ralph C. Farrar ,  Charles M. Selman

    IPC分类号： C08F297/04 ,  C08L53/02

    CPC分类号： C08F297/044

    摘要： A method for preparing resinous polymodal monovinylarene-conjugated diene block copolymers and polymers produced thereby are provided. The method comprises sequentially contacting under polymerization conditions: (a) a monovinylarene monomer and initiator; (b) initiator and a monovinylarene monomer; (c) a sequence of at least two charges selected from the group consisting of (i) initiator and a monovtnylarene monomer, (ii) a mixture of monovtnylarene monomer and conjugated diene monomor, (iii) a conjugated diene monomer, (iv) a monovinylarene monomer; (d) a coupling agent; wherein the sequence of at least two charges in step (c) can be made in any order. In a preferred embodiment, at least three Initiator charges are provided. In another preferred embodiment, at least three monovinylarene charges precede the first charge containing conjugated diene. In another preferred embodiment, at least four monovinylarene charges precede the first charge containing conjugated diene.

    摘要翻译： 提供了一种制备树脂多聚单乙烯基芳烃 - 共轭二烯嵌段共聚物和由此制备的聚合物的方法。 该方法包括在聚合条件下依次接触：（a）单乙烯基芳烃单体和引发剂; （b）引发剂和单乙烯基芳烃单体; （c）选自（i）引发剂和单甲苯基芳烃单体的至少两种电荷的序列，（ii）单甲苯基芳烃单体和共轭二烯单体的混合物，（iii）共轭二烯单体，（iv） 单乙烯基芳烃单体; （d）偶联剂; 其中步骤（c）中的至少两个电荷的顺序可以以任何顺序制成。 在优选实施方案中，提供至少三种引发剂电荷。 在另一个优选实施方案中，至少三种单乙烯基芳烃电荷位于含有共轭二烯的第一电荷之前。 在另一个优选的实施方案中，至少四种单乙烯基芳烃电荷位于含有共轭二烯的第一电荷之前。

    Block copolymers of monovinylarenes and conjugated dienes and preparation thereof
    4.
    发明授权
    Block copolymers of monovinylarenes and conjugated dienes and preparation thereof 失效
    单乙烯基芳烃和共轭二烯的嵌段共聚物及其制备

    公开(公告)号：US5436298A

    公开(公告)日：1995-07-25

    申请号：US308240

    申请日：1994-09-19

    申请人： George A. Moczygemba ,  Larry L. Nash ,  William J. Trepka ,  Craig D. DePorter ,  Nathan E. Stacy ,  Ralph C. Farrar ,  Charles M. Selman

    发明人： George A. Moczygemba ,  Larry L. Nash ,  William J. Trepka ,  Craig D. DePorter ,  Nathan E. Stacy ,  Ralph C. Farrar ,  Charles M. Selman

    IPC分类号： C08F297/04

    CPC分类号： C08F297/044

    摘要： A method for preparing resinous polymodal monovinylarene-conjugated diene block copolymers and polymers produced thereby are provided. The method comprises sequentially contacting under polymerization conditions:(a) a monovinylarene monomer and initiator;(b) initiator and a monovinylarene monomer;(c) a sequence of at least two charges selected from the group consisting of (i) initiator and a monovinylarene monomer, (ii) a mixture of monovinylarene monomer and conjugated diene monomer, (iii) a conjugated diene monomer, (iv) a monovinylarene monomer;(d) s coupling agent;wherein the sequence of at least two charges in step (c) can be made in any order. In a preferred embodiment, at least three initiator charges are provided. In another preferred embodiment, at east three monovinylarene charges precede the first charge containing conjugated diene. In another preferred embodiment, at least four monovinylarene charges precede the first charge containing conjugated diene.

    摘要翻译： 提供了一种制备树脂多聚单乙烯基芳烃 - 共轭二烯嵌段共聚物和由此制备的聚合物的方法。 该方法包括在聚合条件下依次接触：（a）单乙烯基芳烃单体和引发剂; （b）引发剂和单乙烯基芳烃单体; （c）选自（i）引发剂和单乙烯基芳烃单体的至少两种电荷的序列，（ii）单乙烯基芳烃单体和共轭二烯单体的混合物，（iii）共轭二烯单体，（iv） 单乙烯基芳烃单体; （d）偶联剂; 其中步骤（c）中的至少两个电荷的顺序可以以任何顺序制成。 在优选的实施方案中，提供至少三种引发剂电荷。 在另一个优选的实施方案中，在东部三乙烯基芳烃电荷位于含有共轭二烯的第一电荷之前。 在另一个优选的实施方案中，至少四种单乙烯基芳烃电荷位于含有共轭二烯的第一电荷之前。

    Monovinylarene/conjugated diene copolymers having lower glass transition temperatures
    7.
    发明授权
    Monovinylarene/conjugated diene copolymers having lower glass transition temperatures 有权
    具有较低玻璃化转变温度的单乙烯基芳烃/共轭二烯共聚物

    公开(公告)号：US07037980B2

    公开(公告)日：2006-05-02

    申请号：US10705704

    申请日：2003-11-10

    申请人： Nathan E. Stacy ,  Larry L. Nash ,  John D. Hottovy

    发明人： Nathan E. Stacy ,  Larry L. Nash ,  John D. Hottovy

    IPC分类号： C08F297/04

    CPC分类号： C08L53/02 ,  C08F297/04 ,  C08F297/046 ,  C08L53/00

    摘要： We disclose a monovinylarene/conjugated diene block copolymer, comprising: (i) a random (conjugated dienex/monovinylareney)m block, wherein x is about 2.5 wt % to about 10 wt %, y is from about 90 wt % to about 97.5 wt %, and x+y is about 97.5 wt % to 100 wt %; and (ii) a (conjugated diene)n block; wherein n is from about 20 wt % to about 30 wt %, m is from about 70 wt % to about 80 wt %, and m+n is from about 90 wt % to 100 wt %. We also disclose a method of forming the block copolymer and a method for fabricating an article from the block copolymer. The block copolymer typically exhibits a Tg at least about 10° C. less than the Tg of a reference polymer differing only in that x is about 0 wt % and y is about 100 wt %.

    摘要翻译： 我们公开了单乙烯基芳烃/共轭二烯嵌段共聚物，其包含：（ⅰ）无规（共轭二烯）/单乙烯基芳烃y）>>> block wherein wherein wherein wherein wherein wherein wherein wherein wherein wherein wherein x为约2.5重量％至约10重量％，y为约90重量％至约97.5重量％，x + y为约97.5重量％至100重量％; 和（ii）（共轭二烯）N 2嵌段; 其中n为约20重量％至约30重量％，m为约70重量％至约80重量％，m + n为约90重量％至100重量％。 我们还公开了形成嵌段共聚物的方法和由嵌段共聚物制造制品的方法。 嵌段共聚物通常表现出比参考聚合物低至少约10℃至少10℃，其不同之处仅在于x为约0重量％，y 为约100重量％。

    Lactone copolymers as stripping aids in recovery of polymer from solution
    8.
    发明授权
    Lactone copolymers as stripping aids in recovery of polymer from solution 失效
    内酯共聚物作为脱溶剂从溶液中回收聚合物

    公开(公告)号：US4302576A

    公开(公告)日：1981-11-24

    申请号：US199764

    申请日：1980-10-23

    申请人： Larry L. Nash

    发明人： Larry L. Nash

    IPC分类号： C08C2/06 ,  C08F6/10

    CPC分类号： C08F6/10 ,  C08C2/06

    摘要： A process for recovering a rubbery polymer from a rubber-in-solvent solution by steam-stripping the solution to produce rubber crumb in aqueous phase using a low molecular weight lactone copolymer as stripping aid.

    摘要翻译： 使用低分子量内酯共聚物作为汽提助剂，通过汽提汽提该溶液以在水相中产生橡胶屑的方法从溶剂中的溶剂溶液中回收橡胶状聚合物。

    Coupled block copolymers with improved tack for adhesives
    9.
    发明授权
    Coupled block copolymers with improved tack for adhesives 失效
    具有改进粘合剂粘合性的嵌段共聚物

    公开(公告)号：US4163764A

    公开(公告)日：1979-08-07

    申请号：US809360

    申请日：1977-06-23

    申请人： Larry L. Nash

    发明人： Larry L. Nash

    IPC分类号： C08F297/00 ,  C08F297/02 ,  C08G81/02 ,  C09J153/00 ,  C08F297/04

    CPC分类号： C08G81/022

    摘要： A monovinyl arene, such as styrene, is polymerized with a monofunctional lithium initiator, followed by addition of a conjugated diene, such as butadiene, with additional monofunctional lithium initiator. The resultant block copolymers are coupled to give linear coupled block copolymers or radial coupled block copolymers with a random distribution of homopolymer and copolymer branches. The polymers exhibit increased tack and improved creep resistance in adhesive compositions. The amount of initiator added as the second increment with the second monomer must be greater than the amount added as the first increment with the first monomer.

    摘要翻译： 单乙烯基芳烃如苯乙烯与单官能锂引发剂聚合，随后用另外的单官能锂引发剂加入共轭二烯如丁二烯。 将所得的嵌段共聚物偶联，得到具有均聚物和共聚物分支的无规分布的线性偶联嵌段共聚物或径向偶联嵌段共聚物。 聚合物在粘合剂组合物中表现出增加的粘性和改善的抗蠕变性。 与第二单体作为第二增量剂加入的引发剂的量必须大于作为与第一单体的第一增量相加的量。