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105 条记录 (耗时 0.035 秒)

    Thermally activated olefin metathesis catalyst precursor
    61.
    发明授权
    Thermally activated olefin metathesis catalyst precursor 失效
    热活化烯烃复分解催化剂前体

    公开(公告)号：US5502228A

    公开(公告)日：1996-03-26

    申请号：US175328

    申请日：1993-12-29

    申请人： Andrew Bell ,  Tim J. Coffy

    发明人： Andrew Bell ,  Tim J. Coffy

    IPC分类号： B29C45/00 ,  B01J31/02 ,  B01J31/16 ,  B01J31/18 ,  B01J31/22 ,  C07F11/00 ,  C08G61/06 ,  C08G61/08 ,  B01J31/00

    CPC分类号： C08G61/08 ,  B01J31/1805 ,  B01J31/2226 ,  B01J31/2265 ,  B01J2231/543 ,  B01J2531/64 ,  B01J2531/66 ,  C07F11/005

    摘要： Molybdenum and tungsten compounds that are useful as catalyst precursors in the metathesis of olefins have the general formula:M(Y)(OR.sup.2).sub.x (R.sup.3).sub.y (X).sub.z L.sub.swherein M is tungsten or molybdenum; Y is oxygen or NR.sup.1 ; R.sup.1, R.sup.2, and R.sup.3 are the same or different and are selected from alkyl, cycloalkyl, cycloalkenyl, polycycloalkyl, polycycloalkenyl, haloalkyl, haloaralkyl, substituted or unsubstituted aralkyl and aryl groups, and silicon-containing analogs thereof; L is a Lewis base; X is halogen; s is 0 or 1; x+y+z=4, and y.gtoreq.1, provided that when x is 2 or more, two OR.sup.2 groups can be replaced by a chelating ligand (OR.sup.2).sub.2.These compounds can be used for the metathesis of olefins in neat metathesizable olefin, as well as in solution, and require only the input of energy to be converted to active catalysts.

    摘要翻译： 在烯烃复分解中可用作催化剂前体的钼和钨化合物具有以下通式：M（Y）（OR2）x（R3）y（X）zLs其中M是钨或钼; Y是氧或NR1; R 1，R 2和R 3相同或不同，并且选自烷基，环烷基，环烯基，多环烷基，多环烯基，卤代烷基，卤代烷基，取代或未取代的芳烷基和芳基及其含硅类似物; L是路易斯碱; X是卤素; s为0或1; x + y + z = 4，y> / = 1，条件是当x为2以上时，两个OR 2基团可以被螯合配体（OR2）2代替。 这些化合物可用于纯净的可再熔烯烃和溶液中的烯烃的复分解，并且仅需要将能量的输入转化为活性催化剂。

    Pure tungsten oxyphenolate complexes as DCPD polymerization catalysts
    62.
    发明授权
    Pure tungsten oxyphenolate complexes as DCPD polymerization catalysts 失效
    纯钨氧基苯酚盐络合物作为DCPD聚合催化剂

    公开(公告)号：US5082909A

    公开(公告)日：1992-01-21

    申请号：US596265

    申请日：1990-10-12

    申请人： Andrew Bell

    发明人： Andrew Bell

    IPC分类号： C08F4/42 ,  C08F4/78 ,  C08G61/00 ,  C08G61/06 ,  C08G61/08 ,  C08K5/56 ,  C08L65/00

    CPC分类号： C08G61/08

    摘要： This invention relates to a two component catalyst system for polymerization of metathesis polymerizable cycloolefins, comprising(a) a tungsten compound of the formula WOCl.sub.4-x (OAr).sub.x wherein Ar represents a hindered phenyl ring having bulky alkyl, alkoxyl halogen or aryl groups in the 2,6 position, i.e., diisopropyl or phenyl group and x=1, 2 or 3; and(b) an activator compound that is triphenyl tin hydride or trialkyl tin hydride, preferably a tributyltin hydride.Among the preferred molecules or groups that are substituted on the phenyl ring of the tungsten compound include chlorine, bromine, phenyl, methoxy and isopropyl. Ar may also represent a multisubstituted phenyl group such as 2,4-dichloro-6-methyl phenyl.

    Slow gel/cure systems based on dialkylzinc for dicyclopentadiene polymerization
    63.
    发明授权
    Slow gel/cure systems based on dialkylzinc for dicyclopentadiene polymerization 失效
    用于二环戊二烯聚合的基于二烷基锌的缓慢凝胶/固化体系

    公开(公告)号：US4882401A

    公开(公告)日：1989-11-21

    申请号：US250209

    申请日：1988-09-28

    申请人： Andrew Bell

    发明人： Andrew Bell

    IPC分类号： C08G61/06 ,  C08F4/50 ,  C08G61/08 ,  C08G61/12

    CPC分类号： C08G61/08

    摘要： A process for preparing molded objects wherein a liquid reaction mass comprised of a metathesis polymerizable cycloolefin, a metathesis polymerization catalyst, a catalyst activator and a reaction rate moderator are charged to a mold wherein polymerization will take place, the improvement wherein said catalyst activator comprises a dialkylzinc compound. Significantly increased gel and cure times are obtained with the dialkylzinc compounds as compared to the use of aluminum alkyl activator compounds. The gel and cure times may be further controlled by the addition of a phenolic compound to the tungsten or molybdenum compound or by the addition of a Lewis base.