Atom transfer radical polymerization process
    11.
    发明授权
    Atom transfer radical polymerization process 有权
    原子转移自由基聚合过程

    公开(公告)号:US07893174B2

    公开(公告)日:2011-02-22

    申请号:US10591426

    申请日:2005-03-07

    Abstract: Embodiments of the polymerization process of the present invention are directed to polymerizing free radically polymerizable monomers in the presence of a polymerization medium initially comprising at least one transition metal catalyst and an atom transfer radical polymerization initiator. The polymerization medium may additionally comprise a reducing agent. The reducing agent may be added initially or during the polymerization process in a continuous or intermittent manner. The polymerization process may further comprise reacting the reducing agent with at least one of the transition metal catalyst in an oxidized state and a compound comprising a radically transferable atom or group to form a compound that does not participate significantly in control of the polymerization process. Embodiments of the present invention comprise reacting a reducing agent with at least one of catalyst in an oxidized state and a compound comprising a radically transferable atom or group to initiate and/or maintain catalytic activity throughout the polymerization process.

    Abstract translation: 本发明的聚合方法的实施方案涉及在最初包含至少一种过渡金属催化剂和原子转移自由基聚合引发剂的聚合介质的存在下使可自由基聚合的单体聚合。 聚合介质可另外包含还原剂。 还原剂可以以连续或间歇的方式最初或在聚合过程中加入。 聚合方法还可包括使还原剂与氧化态的至少一种过渡金属催化剂和包含可自由基转移的原子或基团的化合物反应,以形成不显着控制聚合方法的化合物。 本发明的实施方案包括使还原剂与氧化状态的催化剂和包含可自由基转移的原子或基团的化合物中的至少一种反应,以在整个聚合过程中引发和/或维持催化活性。

    Atom Transfer Radical Polymerization Process
    12.
    发明申请
    Atom Transfer Radical Polymerization Process 有权
    原子转移自由基聚合方法

    公开(公告)号:US20070276101A1

    公开(公告)日:2007-11-29

    申请号:US10591426

    申请日:2005-03-07

    Abstract: Embodiments of the polymerization process of the present invention are directed to polymerizing free radically polymerizable monomers in the presence of a polymerization medium initially comprising at least one transition metal catalyst and an atom transfer radical polymerization initiator. The polymerization medium may additionally comprise a reducing agent. The reducing agent may be added initially or during the polymerization process in a continuous or intermittent manner. The polymerization process may further comprise reacting the reducing agent with at least one of the transition metal catalyst in an oxidized state and a compound comprising a radically transferable atom or group to form a compound that does not participate significantly in control of the polymerization process. Embodiments of the present invention comprise reacting a reducing agent with at least one of catalyst in an oxidized state and a compound comprising a radically transferable atom or group to initiate and/or maintain catalytic activity throughout the polymerization process.

    Abstract translation: 本发明的聚合方法的实施方案涉及在最初包含至少一种过渡金属催化剂和原子转移自由基聚合引发剂的聚合介质的存在下使可自由基聚合的单体聚合。 聚合介质可另外包含还原剂。 还原剂可以以连续或间歇的方式最初或在聚合过程中加入。 聚合方法还可包括使还原剂与氧化态的至少一种过渡金属催化剂和包含可自由基转移的原子或基团的化合物反应,以形成不显着控制聚合方法的化合物。 本发明的实施方案包括使还原剂与氧化状态的催化剂和包含可自由基转移的原子或基团的化合物中的至少一种反应,以在整个聚合过程中引发和/或维持催化活性。

    Degradable polymers
    13.
    发明申请
    Degradable polymers 审中-公开
    可降解聚合物

    公开(公告)号:US20070155926A1

    公开(公告)日:2007-07-05

    申请号:US10548354

    申请日:2004-03-29

    Abstract: Polymers comprising a polymer backbone comprising one or more degradable units are described. The polymer may additionally comprise two or more polymer segments comprising radically (co)polymerizable vinyl monomer units. The degradable units may be independently selected from, but not limited to, at least one of hydrodegradable, photodegradable and biodegradable units between the polymer segments and dispersed along the polymer backbone. The degradable units may be derived from one or more monomers comprising a heterocyclic ring that is capable of undergoing radical ring opening polymerization, a coupling agent, or from a polymerization initiator, radically polymerizable monomers, as well as other reactive sources. Embodiments of the degradable polymer of claim are capable of degrading by at least one of a hydrodegradation, photodegradation or biodegradation mechanisms to form at least one of telechelic oligomer and telechelic polymeric fragments of the polymer. The degradable polymer may be able to degrade into polymer fragments having a molecular weight distribution of less than 5, or in certain applications it may be preferable for embodiments of the polymer to be capable of forming polymer fragments having a molecular weight distribution of the polymer fragments less than 3.0 or even less than 2.5. Embodiments of the present invention also include methods of producing degradable polymers.

    Abstract translation: 描述了包含包含一个或多个可降解单元的聚合物主链的聚合物。 聚合物可以另外包含两个或更多个包含自由基(共)可聚合的乙烯基单体单元的聚合物链段。 可降解单元可以独立地选自但不限于聚合物链段之间的可分解降解的,可光降解的和可生物降解的单元中的至少一种,并沿着聚合物主链分散。 可降解单元可以衍生自一种或多种包含能够进行自由基开环聚合的杂环,偶联剂或聚合引发剂,可自由基聚合的单体以及其它反应性源的单体。 权利要求中的可降解聚合物的实施方案能够通过加氢降解,光降解或生物降解机理中的至少一种降解以形成聚合物的遥爪低聚物和遥爪聚合物片段中的至少一种。 可降解聚合物可能能够降解为具有小于5的分子量分布的聚合物片段,或者在某些应用中,聚合物的实施方案可优选地形成具有聚合物片段的分子量分布的聚合物片段 小于3.0或甚至小于2.5。 本发明的实施方案还包括生产可降解聚合物的方法。

    Color stable aromatic polyesters
    18.
    发明授权
    Color stable aromatic polyesters 失效
    颜色稳定的芳族聚酯

    公开(公告)号:US4302382A

    公开(公告)日:1981-11-24

    申请号:US146741

    申请日:1980-05-05

    Inventor: James Spanswick

    CPC classification number: C08K5/521 C08G63/19 C08K5/1515 C08K5/5333 C08L67/02

    Abstract: Color stable compositions consisting of aromatic polyester and 0.01 to 0.5% by weight of the aromatic polyester of a stabilizer selected from the group consisting of phosphates, phosphonates and mixtures of either phosphates or phosphonates with epoxides having a boiling point of above about 250.degree. C. These compositions are useful in the manufacture of engineering plastics such as automobile headlights.

    Abstract translation: 由芳族聚酯组成的颜色稳定组合物和选自磷酸盐,膦酸盐和磷酸盐或膦酸盐与沸点高于约250℃的环氧化物的混合物的稳定剂的0.01至0.5重量%的芳族聚酯。 这些组合物可用于制造诸如汽车前灯的工程塑料。

    Fire retardant polymer
    19.
    发明授权
    Fire retardant polymer 失效
    阻燃聚合物

    公开(公告)号:US4101510A

    公开(公告)日:1978-07-18

    申请号:US775933

    申请日:1977-03-09

    Inventor: James Spanswick

    CPC classification number: C08K3/0058 C08L25/06 C08L23/02 C08L25/18

    Abstract: A fire retardant polymer which has a low halogen content is obtained by incorporating a vinyl aromatic containing a group reactive under Friedel-Crafts conditions and a Lewis acid or Lewis acid precursor within a thermoplastic composition.

    Abstract translation: 具有低卤素含量的阻燃聚合物通过在热塑性组合物中掺入在Friedel-Crafts条件下含有基团的乙烯基芳族化合物和路易斯酸或路易斯酸前体而获得。

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