Modified block copolymers
    42.
    发明授权
    Modified block copolymers 失效
    改性嵌段共聚物

    公开(公告)号:US4882384A

    公开(公告)日:1989-11-21

    申请号:US150579

    申请日:1988-02-01

    IPC分类号: C08F8/42

    CPC分类号: C08F8/42

    摘要: A thermoplastic polymer having good tensile strength at elevated temperatures is obtained by modifying a block copolymer composed of a conjugated diene compound and an alkenyl arene compound. The block copolymer is first selectively hydrogenated and thereafter modified by grafting silicon or boron containing functional groups primarily in the alkenyl arene block via metalation. Each silicon containing functional group preferably contains at least two functional groups which allow crosslinking by condensation reactions.

    摘要翻译: 通过改性由共轭二烯化合物和链烯基芳烃化合物组成的嵌段共聚物,可以获得在高温下具有良好拉伸强度的热塑性聚合物。 首先将嵌段共聚物选择性氢化,然后通过金属化接枝主要在烯基芳烃嵌段中的含硅或含硼官能团进行改性。 每个含硅官能团优选含有至少两个允许通过缩合反应进行交联的官能团。

    Alpha-hydroxyisobutyric acid process
    44.
    发明授权
    Alpha-hydroxyisobutyric acid process 失效
    α-羟基异丁酸方法

    公开(公告)号:US4351955A

    公开(公告)日:1982-09-28

    申请号:US204676

    申请日:1980-11-05

    IPC分类号: C07C51/08 C07C59/00

    CPC分类号: C07C51/08

    摘要: Acetone cyanohydrin is converted to alpha-hydroxyisobutyric acid by contacting the cyanohydrin with alpha-hydroxymethanesulfonic acid and water at a temperature of about 70.degree.-125.degree. C. The alpha-hydroxymethanesulfonic acid is an equilibrium product of the reaction of water, sulfur dioxide and formaldehyde.

    摘要翻译: 丙酮氰醇通过使氰醇与α-羟基甲磺酸和水在约70-125℃的温度下接触而转化为α-羟基异丁酸.α-羟基甲磺酸是水,二氧化硫和 甲醛。

    SULFONATED BLOCK COPOLYMER LAMINATES WITH POLAR OR ACTIVE METAL SUBSTRATES
    45.
    发明申请
    SULFONATED BLOCK COPOLYMER LAMINATES WITH POLAR OR ACTIVE METAL SUBSTRATES 审中-公开
    具有极性或活性金属基材的磺化嵌段共聚物层压板

    公开(公告)号:US20130108880A1

    公开(公告)日:2013-05-02

    申请号:US13285306

    申请日:2011-10-31

    摘要: A process for laminating a polar substrate with a film cast from a sulfonated block copolymer having at least one end block A and at least one interior block B wherein each A block contains essentially no sulfonic acid or sulfonate ester functional groups and each B block is a polymer block containing from about 10 to about 100 mol percent sulfonic acid or sulfonate ester functional groups based on the number of monomer units. The film is exposed to water and dried onto a polar or active metal substrate. The laminates do not delaminate in the presence of water and may be used for a variety of applications including energy exchange applications.

    摘要翻译: 一种用具有至少一个端嵌段A和至少一个内嵌块B的磺化嵌段共聚物的薄膜浇铸的极性基材层压的方法,其中每个A嵌段基本上不含磺酸或磺酸酯官能团,并且每个B嵌段是 聚合物嵌段,其含有约10至约100摩尔%的基于单体数目的磺酸或磺酸酯官能团。 将该膜暴露于水中并干燥至极性或活性金属基底上。 层压板在水的存在下不会分层,并可用于各种应用,包括能量交换应用。

    Block copolymer
    46.
    发明授权
    Block copolymer 有权
    嵌段共聚物

    公开(公告)号:US06699941B1

    公开(公告)日:2004-03-02

    申请号:US10289833

    申请日:2002-11-07

    IPC分类号: C08F27900

    CPC分类号: C08F8/04 C08F297/04

    摘要: The present invention relates to selectively hydrogenated block copolymers where one of the blocks is a random copolymer of a mono-alkenyl arene monomer, such as styrene, and a 1,3-cyclodiene monomer, such as 1,3-cyclohexadiene, and one of the other blocks is a hydrogenated polymer or copolymer of an acyclic conjugated diene, such as 1,3-butadiene or isoprene.

    摘要翻译: 本发明涉及选择性氢化嵌段共聚物,其中一个嵌段是单链烯基芳族单体如苯乙烯的无规共聚物和1,3-环二烯单体如1,3-环己二烯,和 其它嵌段是非环状共轭二烯如1,3-丁二烯或异戊二烯的氢化聚合物或共聚物。