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    Isoprene polymerization process
    27.
    发明授权
    Isoprene polymerization process 失效
    异戊二烯聚合工艺

    公开(公告)号：US4696984A

    公开(公告)日：1987-09-29

    申请号：US866147

    申请日：1986-05-22

    申请人： Antonio Carbonaro ,  Domenico Ferraro

    发明人： Antonio Carbonaro ,  Domenico Ferraro

    IPC分类号： C08F36/00 ,  C08F4/00 ,  C08F4/12 ,  C08F4/52 ,  C08F4/60 ,  C08F36/08

    CPC分类号： C08F36/08

    摘要： Isoprene polymers and copolymers are prepared by a polymerization process carried out in the absence of solvents and in the presence of a catalytic system comprising (a) at least one element or compound of an element pertaining to Group IIIB of the Periodic Table, (b) at least one aluminium alkyl derivative, (c) at least one organic halogen derivative or at least one halide of an element able to exist in at least two valency states with the halide corresponding to a higher state than the minimum, or at least one halogen or at least one hydrogen halide acid, (d) at least one compound containing one or more hydroxyl groups of which the hydrogen can be substituted, the ratio of component (b) to component (a) being equal to or less than 20.

    摘要翻译： 异戊二烯聚合物和共聚物通过在不存在溶剂的情况下进行的聚合方法和在包含（a）至少一种元素或元素周期表IIIB族元素的化合物的存在下进行制备，（b） 至少一种烷基铝衍生物，（c）至少一种有机卤素衍生物或能够以至少两个价态存在的元素的至少一种卤化物，其中卤化物对应于比最低值高的状态，或至少一种卤素 或至少一种卤化氢酸，（d）至少一种含有一个或多个羟基的化合物，其中氢可以被取代，组分（b）与组分（a）的比例等于或小于20。

    Process for polymerizing alpha olefins with phenolic compound containing catalysts
    28.
    发明授权
    Process for polymerizing alpha olefins with phenolic compound containing catalysts 失效
    含有酚类化合物的催化剂聚合α-烯烃的方法

    公开(公告)号：US4529780A

    公开(公告)日：1985-07-16

    申请号：US322980

    申请日：1981-11-19

    申请人： Rolf F. Foerster

    发明人： Rolf F. Foerster

    IPC分类号： C08F2/00 ,  C08F4/00 ,  C08F4/06 ,  C08F4/12 ,  C08F4/16 ,  C08F4/60 ,  C08F10/00 ,  C08F4/64 ,  C08F10/06

    CPC分类号： C08F10/00 ,  Y10S526/907

    摘要： An improved method for the preparation of homopolymers and copolymers of alpha olefins by means of a catalyst system comprising a titanium halide, an aluminum alkyl, and a phenolic compound which has a tendency to crystallize at low temperatures in the reactor feed system is disclosed. The improvement comprises prereacting a portion of the aluminum alkyl with the phenolic compound such that the components remain catalytically inactive and then activating the catalyst by adding the remainder of the aluminum alkyl to prereacted components in situ in the polymerization reactor, thereby preventing the crystallization of the phenolic compound at low temperatures in the feed system for the reactor.

    摘要翻译： 公开了一种用于通过包括在反应器进料系统中在低温下结晶倾向的卤化钛，烷基铝和酚类化合物的催化剂体系制备α-烯烃的均聚物和共聚物的改进方法。 改进之处在于预先将烷基铝的一部分与酚类化合物反应，使得组分保持催化无活性，然后通过在聚合反应器中原位加入剩余的烷基铝原位预活化组分来活化催化剂，从而防止了 反应器进料系统中低温下的酚类化合物。

    Process for producing polybutadine rubber with enhanced mechanical strength
    30.
    发明授权
    Process for producing polybutadine rubber with enhanced mechanical strength 失效
    生产具有增强的机械强度的聚丁二烯橡胶的方法

    公开(公告)号：US4379889A

    公开(公告)日：1983-04-12

    申请号：US216869

    申请日：1980-12-16

    申请人： Hidetomo Ashitaka ,  Kyohei Oizumi ,  Kazuya Jinda ,  Kazutoshi Inaishi

    发明人： Hidetomo Ashitaka ,  Kyohei Oizumi ,  Kazuya Jinda ,  Kazutoshi Inaishi

    IPC分类号： C08F4/00 ,  C08F4/60 ,  C08F4/70 ,  C08F36/00 ,  C08F136/06 ,  C08F295/00 ,  C08F4/12

    CPC分类号： C08F295/00 ,  C08F136/06

    摘要： A polybutadiene rubber having an enhanced mechanical strength is produced by a process comprising two successive steps of:(A) cis-1,4-polymerizing 1,3-butadiene in a polymerization medium in the presence of a catalyst comprising a cobalt compound and a dialkyl aluminium halide of the formula (I): AlR.sub.2 X, wherein R=C.sub.2 -8 alkyl and X=halogen, and;(B) subjecting a mixture of the resultant cis-1,4-polybutadiene and the non-reacted 1,3-butadiene in the polymerization medium to a 1,2-polymerization in the presence of a catalyst comprising a cobalt compound, a dialkyl aluminium halide of the formula (I), carbon disulfide and an electron donative organic compound.

    摘要翻译： 具有增强的机械强度的聚丁二烯橡胶通过包括以下两个连续步骤的方法制备：（A）在聚合介质中，在包含钴化合物的催化剂存在下，顺式-1,4-聚合1,3-丁二烯， 式（I）的二烷基卤化铝：AlR2X，其中R = C2-8烷基，X =卤素，和 （B）将所得到的顺式-1,4-聚丁二烯与未反应的1,3-丁二烯的混合物在聚合介质中进行1,2-聚合，所述催化剂包含钴化合物，二烷基 式（I）的卤化铝，二硫化碳和给电子有机化合物。