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22 条记录 (耗时 0.048 秒)

    Ozone-resistant butyl elastomer
    2.
    发明授权
    Ozone-resistant butyl elastomer 失效
    耐臭氧丁基弹性体

    公开(公告)号：US5182350A

    公开(公告)日：1993-01-26

    申请号：US605679

    申请日：1990-10-30

    申请人： James V. Fusco ,  Hsien-Chang Wang ,  Kenneth W. Powers

    发明人： James V. Fusco ,  Hsien-Chang Wang ,  Kenneth W. Powers

    IPC分类号： C08F210/12

    CPC分类号： C08F210/12

    摘要： Ozone resistant vulcanizable copolymers of isoolefins with non-conjugated dienes of the general formula: ##STR1## where R.sub.1 is ##STR2## and R.sub.2 is alkyl of 1 to 6 carbon atoms and vulcanizates thereof. The copolymers are prepared by polymerization in the presence of Lewis acids.

    摘要翻译： 异烯烃与具有以下通式的非共轭二烯的耐臭氧可硫化共聚物：其中R 1是R 1和R 2是1至6个碳原子的烷基和其硫化产物。 共聚物通过在路易斯酸存在下聚合制备。

    Production of rubbery isoolefin polymers
    3.
    发明授权
    Production of rubbery isoolefin polymers 失效
    橡胶异烯烃聚合物的生产

    公开(公告)号：US5182333A

    公开(公告)日：1993-01-26

    申请号：US791764

    申请日：1991-11-12

    申请人： Kenneth W. Powers ,  Hsien-Chang Wang ,  Debra C. Handy ,  James V. Fusco

    发明人： Kenneth W. Powers ,  Hsien-Chang Wang ,  Debra C. Handy ,  James V. Fusco

    IPC分类号： C08F10/10 ,  C08L23/22 ,  C08L23/28

    CPC分类号： C08L23/22 ,  C08F10/10 ,  C08L23/283 ,  Y10S525/918

    摘要： A substantially gel free C.sub.4 to C.sub.7 isoolefin homopolymer rubber, butyl copolymer rubber, halogenated butyl rubber (e.g., chlorinated or brominated), or mixtures thereof, comprising a molecular weight distribution such that the ratio of the moments of said molecular weight distribution, Mz/Mw, is equal to or exceeds 2.0, and that portion of said molecular weight distribution which is equal to and greater than 4 times the peak molecular weight, Mp, comprises greater than 8 percent of the total polymer species, and Mp is greater than about 250,000 and wherein said polymer species of molecular weight less than Mp are substantially branch free. Various means are disclosed for effecting the molecular weight distribution including blending of homopolymers and/or copolymers of appropriate molecular weight and molecular weight distribution and direct polymerization using a functional reagent to introduce branching. The rubber compositions are particularly useful in applications in which butyl or halogenated butyl rubber is used and where it is desired to obtain high green strength in combination with an increased rate of stress relaxation. Such polymers are particularly well suited for use in tire innerliner compositions.

    摘要翻译： 基本上不含凝胶的C4至C7异烯烃均聚物橡胶，丁基共聚物橡胶，卤化丁基橡胶（例如，氯化或溴化）或其混合物，其包含分子量分布，使得所述分子量分布的时间比Mz / Mw等于或超过2.0，等于和大于峰分子量Mp的4倍的分子量分布的那部分包含大于总聚合物种类的8％，并且M p大于约 250,000，并且其中分子量小于Mp的所述聚合物种类基本上无分支。 公开了用于实现分子量分布的各种方法，包括使用适当的分子量和分子量分布的均聚物和/或共聚物的共混，并使用官能试剂引入支化的直接聚合。 橡胶组合物在使用丁基或卤代丁基橡胶的应用中特别有用，并且其中期望获得高的绿色强度并且结合增加的应力松弛速率。 这种聚合物特别适用于轮胎内衬组合物。

    Rubbery isoolefin polymers exhibiting improved processability
    4.
    发明授权
    Rubbery isoolefin polymers exhibiting improved processability 失效
    橡胶树脂聚合物展现出改进的可加工性

    公开(公告)号：US5071913A

    公开(公告)日：1991-12-10

    申请号：US131938

    申请日：1987-12-11

    申请人： Kenneth W. Powers ,  Hsien-Chang Wang ,  Debra C. Handy ,  James V. Fusco

    发明人： Kenneth W. Powers ,  Hsien-Chang Wang ,  Debra C. Handy ,  James V. Fusco

    IPC分类号： C08L23/20 ,  B60C1/00 ,  C08F10/10 ,  C08F210/12 ,  C08L23/18 ,  C08L23/22 ,  C08L23/28

    CPC分类号： B60C1/0008 ,  C08F10/10 ,  C08F210/12 ,  C08L23/22 ,  C08L23/283 ,  Y10S525/918

    摘要： A substantially gel free C.sub.4 to C.sub.7 isoolefin homopolymer rubber, butyl copolymer rubber, halogenated butyl rubber (e.g., chlorinated or brominated), or mixtures thereof, comprising a molecular weight distribution such that the ratio of the moments of said molecular weight distribution, Mz/Mw, is equal to or exceeds 2.0, and that portion of said molecular weight distribution which is equal to and greater than 4 times the peak molecular weight, Mp, comprises greater than 8 percent of the total polymer species, and Mp is greater than about 250,000 and wherein said polymer species of molecular weight less than Mp are substantially branch free. Various means are disclosed for effecting the molecular weight distribution including blending of homopolymers and/or copolymers of appropriate molecular weight and molecular weight distribution and direct polymerization using a functional reagent to introduce branching. The rubber compositions are particularly useful in applications in which butyl or halogenated butyl rubber is used and where it is desired to obtain high green strength in combination with an increased rate of stress relaxation. Such polymers are particularly well suited for use in tire innerliner compositions.

    Craft curing of modified isomonoolefin/para-alkylstyrene copolymers
    5.
    发明授权
    Craft curing of modified isomonoolefin/para-alkylstyrene copolymers 失效
    改性异单烯烃/对烷基苯乙烯共聚物的工艺固化

    公开(公告)号：US5567775A

    公开(公告)日：1996-10-22

    申请号：US469285

    申请日：1995-06-06

    申请人： Hsien C. Wang ,  Irwin J. Gardner ,  James V. Fusco

    发明人： Hsien C. Wang ,  Irwin J. Gardner ,  James V. Fusco

    IPC分类号： C08F290/12 ,  C08F8/00 ,  C08F290/04 ,  C08F255/10 ,  C08F257/02

    CPC分类号： C08F290/04 ,  C08F8/00

    摘要： This invention provides for curable and graft-cured polymer compositions prepared from a mixture comprising:a) an elastomeric copolymer containing from about 0.01 up to about 10 mole % of Y ester groups randomly distributed along and pendant to the elastomeric polymer chain, said Y ester groups having the structure: ##STR1## wherein R.sub.2 and R.sub.3 are independently selected from the group consisting of hydrogen and an alkyl group containing 1 to about 6 carbon atoms and R.sub.4 is selected from the group consisting of hydrogen, an alkyl group containing from 1 to about 28 carbon atoms, an aryl group and an alkenyl group containing from 2 to about 28 carbon atoms; andb) at least one free radically polymerizable monomer. The invention also provides for a process for preparing graft-cured polymer compositions comprising forming the above recited mixture of (a) and (b) and subjecting said mixture to free radical polymerization conditions. The Y ester groups pendant to the elastomeric polymer chain, e.g. benzylic(meth)acrylic acid ester groups present in isobutylene/para-methystyrene interpolymer chains, are capable of participating in free radical initiated reactions with monofunctional or polyfunctional free radically polymerizable monomers to produce graft-crosslinked compositions having an unusual balance of physical properties. These compositions may be formed into shaped articles such as films, coatings, adhesive layers and moldings and subjected to free radical polymerization conditions to produce crosslinked shaped articles.

    摘要翻译： 本发明提供了由混合物制备的可固化和接枝固化的聚合物组合物，其包含：a）含有约0.01至约10摩尔％的Y酯基的弹性体共聚物，其随机分布并垂直于弹性体聚合物链，所述Y酯 具有以下结构的基团：其中R 2和R 3独立地选自氢和含有1至约6个碳原子的烷基，R 4选自氢，含1至 约28个碳原子，芳基和含有2至约28个碳原子的烯基; 和b）至少一种可自由基聚合的单体。 本发明还提供了制备接枝固化的聚合物组合物的方法，包括形成上述（a）和（b）的混合物并使所述混合物经受自由基聚合条件。 Y酯基垂直于弹性体聚合物链，例如。 存在于异丁烯/对 - 甲基苯乙烯互聚物链中的苄基（甲基）丙烯酸酯基能够参与与单官能或多官能的可自由基聚合单体的自由基引发的反应，以产生具有不寻常的物理平衡平衡的接枝交联组合物。 这些组合物可以形成成型制品如薄膜，涂料，粘合剂层和模制品，并进行自由基聚合条件以制备交联成型制品。