Anionically polymerized polymers coupled with fullerenes
    1.
    发明授权
    Anionically polymerized polymers coupled with fullerenes 失效
    与富勒烯偶联的阴离子聚合聚合物

    公开(公告)号:US5270394A

    公开(公告)日:1993-12-14

    申请号:US956184

    申请日:1992-10-05

    IPC分类号: C08F297/04 C08G81/02

    摘要: A process is described for producing a coupled polymer by anionically polymerizing monomers selected from the group consisting of a vinyl aromatic hydrocarbon, a conjugated diene or both with an organo alkali metal compound to produce living polymer arms which are then contacted with a fullerene which reacts with the living polymer arms to form a coupled polymer. The coupled polymer has a novel composition and novel characteristics.

    摘要翻译: 描述了通过将选自乙烯基芳族烃,共轭二烯或二者的单体与有机碱金属化合物阴离子聚合来制备偶联聚合物的方法,以制备活性聚合物臂,然后与富勒烯接触,所述富勒烯与 活性聚合物臂形成偶联聚合物。 偶联聚合物具有新颖的组成和新颖的特点。

    Hydrogenation catalyst and hydrogenation process wherein said catalyst
is used
    2.
    发明授权
    Hydrogenation catalyst and hydrogenation process wherein said catalyst is used 失效
    氢化催化剂和氢化方法,其中使用所述催化剂

    公开(公告)号:US5013798A

    公开(公告)日:1991-05-07

    申请号:US527924

    申请日:1990-05-24

    IPC分类号: B01J31/04 B01J31/14 C08F8/04

    摘要: A hydrogenation catalyst prepared by combining a Group VIIIA metal compound and a hydrocarbyl-substituted silicon alumoxane and a hydrogenation process wherein said catalyst is used to hydrogenate compounds containing ethylenic and/or aromatic unsaturation. The Group VIIIA metal compound is selected from the group of compounds consisting of carboxylates, chelates, alkoxides, salts of hydrocarbon acids containing sulfur and salts of partial half esters of hydrocarbyl acids containing sulfur. Nickel, cobalt and palladium compounds are particularly preferred for use in the hydrogenation catalyst. Hydrogenation catalysts prepared with hydrocarbyl-substituted silicon slumoxanes initially exhibit less hydrogenation activity than catalysts known heretofore in the prior art and prepared with a metal alkyl of a metal selected from Groups, I, II and III. These catalysts, then afford greater control over the extent of hydrogenation, particularly when partial hydrogenation is a desired end result. Ultimately, however, the catalyst permits substantially complete hydrogenation of both ethylenic and aromatic unsaturation.

    摘要翻译: 通过组合ⅦA族金属化合物和烃基取代的硅铝氧烷制备的氢化催化剂和氢化方法,其中所述催化剂用于氢化含有烯属和/或芳族不饱和基团的化合物。 VIIIA族金属化合物选自羧酸盐,螯合物,醇盐,含硫烃的盐和含有硫的烃基酸的部分半酯的盐组成的化合物。 镍,钴和钯化合物特别优选用于氢化催化剂。 用烃基取代的硅硅烷制备的氢化催化剂最初表现出比现有技术中已知的催化剂更少的氢化活性,并用选自组I,II和III的金属的金属烷基制备。 这些催化剂然后提供对氢化程度的更大的控制,特别是当部分氢化是期望的最终结果时。 然而,最终催化剂允许乙烯和芳族不饱和基团完全氢化。

    Hydrogenation process
    3.
    发明授权
    Hydrogenation process 失效
    氢化过程

    公开(公告)号:US4892928A

    公开(公告)日:1990-01-09

    申请号:US256537

    申请日:1988-10-12

    IPC分类号: C08F8/04

    CPC分类号: C08F8/04

    摘要: A process for selectively hydrogenating a polymer containing ethylenic unsaturation and cyano groups with a catalyst prepared by combining one or more of certain palladium compounds and one or more of certain aluminum compounds in a suitable solvent or diluent. The hydrogenation is accomplished in a suitable solvent for the polymer at a temperature within the range from about 20.degree. C. to about 175.degree. C. at a total pressure within the range from about 50 to about 1,000 psig and at a hydrogen partial pressure within the range from about 50 to about 950 psig. The hydrogenation can be accomplished so as to convert at least about 85% of the ethylenic unsaturation contained initially in the polymer without converting a significant portion of the cyano groups to amine groups. Best results are achieved when the catalyst is prepared by combining the one or more palladium compounds and the one or more aluminum compounds in proportions such that the Al:Pd atomic ratio is within the range from about 0.3:1 to about 0.9:1. Catalysts prepared in an ether solvent or diluent are more active than catalysts prepared in hydrocarbon solvents or diluents.

    摘要翻译: 一种通过将一种或多种某些钯化合物和一种或多种某些铝化合物在合适的溶剂或稀释剂中混合制备的催化剂选择性地氢化含有烯属不饱和性和氰基的聚合物的方法。 氢化在用于聚合物的合适溶剂中,在约20℃至约175℃的温度范围内,总压力为约50至约1,000psig,在氢气分压 其范围为约50至约950psig。 可以完成氢化以便将至少约85%的最初包含在聚合物中的烯属不饱和度转化而不将氰基的显着部分转化为胺基。 当催化剂通过将一种或多种钯化合物和一种或多种铝化合物以使得Al:Pd原子比在约0.3:1至约0.9:1范围内的比例组合制备催化剂时,可获得最佳结果。 在醚溶剂或稀释剂中制备的催化剂比在烃溶剂或稀释剂中制备的催化剂更有活性。

    Process for preparing a supported molybdenum carbide composition
    4.
    发明授权
    Process for preparing a supported molybdenum carbide composition 失效
    制备负载的碳化钼组合物的方法

    公开(公告)号:US4326992A

    公开(公告)日:1982-04-27

    申请号:US213972

    申请日:1980-12-08

    IPC分类号: B01J27/22 C10K3/02 B01J23/28

    摘要: A process for preparing a supported molybdenum carbide composition which comprises impregnating a porous support with a solution of molybdic acid dissolved in aqueous ammonium hydroxide, drying the impregnated support and then heating in a carbiding atmosphere at a temperature of about 650.degree.-750.degree. C.

    摘要翻译: 一种制备负载的碳化钼组合物的方法,其包括用溶解在氢氧化铵水溶液中的钼酸溶液浸渍多孔载体,干燥所浸渍的载体,然后在碳化气氛中在约650-约50℃的温度下加热。

    Process for preparing a supported tungsten carbide composition
    5.
    发明授权
    Process for preparing a supported tungsten carbide composition 失效
    制备负载型碳化钨组合物的方法

    公开(公告)号:US4325843A

    公开(公告)日:1982-04-20

    申请号:US213970

    申请日:1980-12-08

    IPC分类号: B01J27/22 B01J23/30

    CPC分类号: B01J27/22 Y10S502/506

    摘要: A process for preparing a supported tungsten carbide composition which comprises first forming a supported tungsten oxide composition, converting the oxide to the nitride by heating in an ammonia atmosphere, and then converting the nitride to the carbide by heating in a carbiding atmosphere.

    摘要翻译: 一种制备负载的碳化钨组合物的方法,其包括首先形成负载的氧化钨组合物,通过在氨气氛中加热将氧化物转化为氮化物,然后通过在碳化气氛中加热将氮化物转化为碳化物。

    Anionically polymerized block copolymers of ethylene and cyclic siloxane
monomers
    6.
    发明授权
    Anionically polymerized block copolymers of ethylene and cyclic siloxane monomers 失效
    乙烯和环状硅氧烷单体的阴离子聚合嵌段共聚物

    公开(公告)号:US5618903A

    公开(公告)日:1997-04-08

    申请号:US634078

    申请日:1996-04-17

    IPC分类号: C08G77/442

    CPC分类号: C08G77/442

    摘要: This invention relates to anionically polymerized block copolymers comprised of at least one block polyethylene and at least one block of a polymerized cyclic siloxane monomer, e.g., polydimethylsiloxane. Block copolymers with multiple "arms" may be formed by coupling these living diblocks with polyfunctional coupling agents. One copolymer for use in wax release coatings has an overall weight average molecular weight of 1500 to 100,000, a polyethylene block weight average molecular weight of less than 4100, and a polyethylene content of less than 55 percent by weight. Another copolymer for use in extruded release coating films prepared by blending the copolymer with a film grade polymer has an overall molecular weight of less than 20,000 and a polyethylene block molecular weight of less than 3700.

    摘要翻译: 本发明涉及由至少一个嵌段聚乙烯和至少一个聚合的环状硅氧烷单体例如聚二甲基硅氧烷组成的阴离子聚合嵌段共聚物。 可以通过将这些活性二嵌段与多官能偶联剂偶联来形成具有多个“臂”的嵌段共聚物。 用于蜡剥离涂料的一种共聚物的总重均分子量为1500-100,000,聚乙烯嵌段重均分子量小于4100,聚乙烯含量小于55重量%。 通过将共聚物与膜级聚合物共混制备的用于挤出脱模涂膜的另一种共聚物的总分子量小于20,000,聚乙烯嵌段分子量小于3700。

    Process for making graft block copolymers by growing anionic polymer
chains from functionalized polyolefin backbones
    7.
    发明授权
    Process for making graft block copolymers by growing anionic polymer chains from functionalized polyolefin backbones 失效
    通过从官能化聚烯烃骨架生长阴离子聚合物链来制备接枝嵌段共聚物的方法

    公开(公告)号:US5543458A

    公开(公告)日:1996-08-06

    申请号:US381242

    申请日:1995-01-31

    摘要: A graft block copolymer is comprised of a completely saturated olefinic backbone with pendant anionic polymer side chains. The polymer is produced by copolymerizing an .alpha.-olefin with a monomer which contains a functional group which can be metallated so an anionic monomer can be polymerized therefrom, metallating the copolymer by reaction with metal alkyl or aryl compound and a metallation activator, and growing anionic polymer side chains from the copolymer backbone by reacting an anionically polymerized monomer with the metallated copolymer.

    摘要翻译: 接枝嵌段共聚物由具有侧阴离子聚合物侧链的完全饱和的烯属主链组成。 该聚合物是通过使α-烯烃与含有可被金属化的官能团的单体共聚制备的,因此阴离子单体可从其中聚合,通过与金属烷基或芳基化合物和金属化活化剂的反应使共聚物金属化,并且阴离子生长 聚合物侧链通过使阴离子聚合的单体与金属化共聚物反应而由共聚物主链形成。

    Method for producing asymmetric radial polymers
    8.
    发明授权
    Method for producing asymmetric radial polymers 失效
    不对称径向聚合物的制备方法

    公开(公告)号:US5447995A

    公开(公告)日:1995-09-05

    申请号:US250409

    申请日:1994-05-27

    摘要: A method for producing asymmetric radial polymers which comprises anionically polymerizing an anionically polymerizable monomer to form a first set of living polymer arms, coupling the first set of living polymer arms with a silicon-based coupling agent, substantially completing the coupling reaction, anionically polymerizing, in the presence of the coupled first set of polymer arms, a different anionically polymerizable monomer(s) to form a second set of living polymer arms, and adding a coupling activator and coupling the second set of living polymer arms to the coupled first set of polymer arms to form the asymmetric radial polymer.

    摘要翻译: 一种制备不对称放射状聚合物的方法,其包括阴离子聚合阴离子聚合单体以形成第一组活性聚合物臂,将第一组活性聚合物臂与硅基偶联剂偶联,基本上完成偶联反应,阴离子聚合, 在耦合的第一组聚合物臂的存在下,形成不同的阴离子可聚合单体以形成第二组活性聚合物臂,并加入偶联活化剂并将第二组活性聚合物臂与第一组聚合物臂 聚合物臂形成不对称的径向聚合物。

    Process for making block copolymers of vinyl aromatic hydrocarbons
and/or conjugated dienes and polydimethylsiloxane
    10.
    发明授权
    Process for making block copolymers of vinyl aromatic hydrocarbons and/or conjugated dienes and polydimethylsiloxane 失效
    制备乙烯基芳族烃和/或共轭二烯和聚二甲基硅氧烷的嵌段共聚物的方法

    公开(公告)号:US5281666A

    公开(公告)日:1994-01-25

    申请号:US990913

    申请日:1992-12-15

    CPC分类号: C08G77/442

    摘要: The present invention is an improvement upon the process for making block copolymers of vinyl aromatic hydrocarbons and/or conjugated dienes, and polydimethylsiloxane by first anionically polymerizing the vinyl aromatic hydrocarbon to make a living polymer block and then adding hexamethylcyclotrisiloxane and a polar promoter to polymerize a polydimethylsiloxane block at the end of the living polymer block. The improvement comprises reacting the living polymer blocks with a crossover reagent to decrease the crossover time from the living polymer block polymerization to the polydimethylsiloxane polymerization.

    摘要翻译: 本发明是对乙烯基芳族烃和/或共轭二烯的嵌段共聚物和聚二甲基硅氧烷进行阴离子聚合以制备活性聚合物嵌段,然后加入六甲基环三硅氧烷和极性促进剂以聚合的方法的改进 聚二甲基硅氧烷嵌段在活性聚合物嵌段的末端。 改进之处在于使活性聚合物嵌段与交联试剂反应,以减少从活性聚合物嵌段聚合到聚二甲基硅氧烷聚合的交叉时间。