Ethylene-propylene elastomeric copolymers with a low content of residual
chlorine
    3.
    发明授权
    Ethylene-propylene elastomeric copolymers with a low content of residual chlorine 失效
    具有低残留氯含量的乙烯 - 丙烯弹性体共聚物

    公开(公告)号:US5491208A

    公开(公告)日:1996-02-13

    申请号:US221256

    申请日:1994-03-31

    CPC分类号: C08F210/16

    摘要: In an improved process for producing elastomeric ethylene-propylene copolymers with a propylene content comprised within the range of from 22 to 38% by weight and a content of residual chlorine, coming from the co-catalyst, lower than 300 parts per million parts, the polymerization is carried out in suspension in the monomers in the liquid state, with vanadium triacetylacetonate and alkyl-Al compounds, and the obtained polymer is recovered without any washing steps.

    摘要翻译: 在制备弹性体乙烯 - 丙烯共聚物的改进方法中,丙烯含量为22至38重量%,来自助催化剂的残留氯含量低于300份/份, 在液态的单体中以三乙酰丙酮钒和烷基铝化合物的悬浮液进行聚合,并且在没有任何洗涤步骤的情况下回收得到的聚合物。

    Process for the preparaton of elastomeric copolymers of ethylene
    5.
    发明授权
    Process for the preparaton of elastomeric copolymers of ethylene 失效
    制备乙烯弹性共聚物的方法

    公开(公告)号:US5374695A

    公开(公告)日:1994-12-20

    申请号:US912089

    申请日:1992-07-09

    摘要: Process for the preparation of elastomeric copolymers of ethylene, wherein ethylene is copolymerized with an .alpha.-olefin, and possibly with a diene as termonomer, in the presence of a Ziegler-Natta catalyst including a solid component of catalyst based on titanium and aluminium, supported on magnesium chloride and obtained, in accordance with a special procedure, in the form of a spherical granular solid. This process produces elastomeric copolymers having a low crystallinity even with a high content of linked ethylene.

    摘要翻译: 制备乙烯的弹性体共聚物的方法,其中乙烯与α-烯烃共聚合,并且可能与二烯作为三元共聚物,在包括基于钛和铝的催化剂固体组分的齐格勒 - 纳塔催化剂存在下负载 在氯化镁上,按照特殊程序,以球形颗粒状固体的形式获得。 该方法生产即使具有高含量的连接乙烯也具有低结晶度的弹性体共聚物。

    Elastomeric composition useful for tire treads
    6.
    发明申请
    Elastomeric composition useful for tire treads 审中-公开
    用于轮胎胎面的弹性组合物

    公开(公告)号:US20040019144A1

    公开(公告)日:2004-01-29

    申请号:US10627764

    申请日:2003-07-28

    IPC分类号: C08K003/04 C08K003/34

    摘要: Elastomeric composition vulcanizable with sulfur useful for the preparation of tyre treads which comprises: a) 100 parts of elastomeric mixture comprising from 20 to 100% by weight of an elastomer deriving from the polymerization of a monovinylarene with a conjugated diene, preferably a styrene-butadiene copolymer, the complement to 100 being selected from natural rubber, polybutadiene and other diolefin elastomers; b) from 10 to 150 parts of silica per 100 parts of (a); c) from 0 to 150 parts of carbon black per 100 parts of (a); characterized in that the elastomeric mixture (a) has an epoxidation degree from 0.7 to 8.0%.

    摘要翻译: 可用硫磺硫化的可用于制备轮胎胎面的弹性体组合物,其包括:a)100份弹性体混合物,其包含20至100重量%的衍生自单乙烯基芳烃与共轭二烯聚合的弹性体,优选苯乙烯 - 丁二烯 共聚物,100的补体选自天然橡胶,聚丁二烯和其它二烯烃弹性体; b)每100份(a)10至150份二氧化硅; c)每100份(a)0至150份炭黑; 其特征在于弹性体混合物(a)具有0.7至8.0%的环氧化程度。

    Process for the production of ethylene-propylene elastomeric copolymers
    7.
    发明授权
    Process for the production of ethylene-propylene elastomeric copolymers 失效
    制备乙烯 - 丙烯弹性体共聚物的方法

    公开(公告)号:US5804614A

    公开(公告)日:1998-09-08

    申请号:US714398

    申请日:1996-09-16

    申请人: Tiziano Tanaglia

    发明人: Tiziano Tanaglia

    CPC分类号: C08F210/16 Y10S526/904

    摘要: Process for the preparation in liquid phase of copolymers of ethylene with propylene and optionally another diene, in the presence of a catalyst selected from (a) Titanium salt supported on magnesium salt and (b) compound of Vanadium soluble in hydrocarbon solvents either supported on an inert material or prepolymerized, and a co-catalyst essentially consisting of an organic compound of Aluminium, and a possible chlorinated activator, characterized in that: 1) when the polymerization is almost complete, a solid material insoluble in the reaction environment and having an average diameter of between 0.001 and 200 microns is added to the reaction mixture; 2) the suspension of polymer and solid material are kept in contact for a sufficient time to obtain perfectly free-flowing polymeric particles; 3) the perfectly free-flowing polymeric particles of step (2) are recovered.

    摘要翻译: 在乙烯与丙烯和任选的另一种二烯的共聚物的液相中在催化剂存在下制备方法,所述催化剂选自(a)负载在镁盐上的钛盐和(b)可溶于烃溶剂的钒化合物, 惰性材料或预聚合物,以及基本上由铝的有机化合物组成的助催化剂和可能的氯化活化剂,其特征在于:1)当聚合几乎完成时,不溶于反应环境并具有平均值的固体材料 将直径为0.001至200微米的直径加入到反应混合物中; 2)聚合物和固体材料的悬浮液保持接触足够的时间以获得完全自由流动的聚合物颗粒; 3)回收步骤(2)的完全自由流动的聚合物颗粒。

    Process for shortstopping emulsion polymerizations which does not
generate nitrosamines
    9.
    发明授权
    Process for shortstopping emulsion polymerizations which does not generate nitrosamines 失效
    不产生亚硝胺的快速乳化聚合方法

    公开(公告)号:US5504168A

    公开(公告)日:1996-04-02

    申请号:US339228

    申请日:1994-11-10

    CPC分类号: C08F10/00 C08F36/04

    摘要: Method for the shortstopping of polymerizations of conjugated dienes possibly mixed with vinyl-substituted aromatic products in a radicalic emulsion polymerization process using a redox initiator, in particular radicalic emulsion polymerizations of butadiene possibly mixed with styrene or acrylonitrile, a method which enables the production of polymers without nitrosamines (NA) and/or their precursors.

    摘要翻译: 在使用氧化还原引发剂的自由基乳液聚合方法中,特别是可能与苯乙烯或丙烯腈混合的丁二烯的自由基乳液聚合中,可能与乙烯基取代的芳族化合物混合的共轭二烯的聚合速度的方法,能够生产聚合物的方法 没有亚硝胺(NA)和/或其前体。

    Organometallic complexes of lanthanides and their use in the
polymerization of unsaturated monomers
    10.
    发明授权
    Organometallic complexes of lanthanides and their use in the polymerization of unsaturated monomers 失效
    镧系元素的有机金属络合物及其在不饱和单体聚合中的应用

    公开(公告)号:US5484897A

    公开(公告)日:1996-01-16

    申请号:US281221

    申请日:1994-07-27

    CPC分类号: C08F36/04 C07F5/062 C08F4/52

    摘要: Organometallic complexes of lanthanides with a well-defined stoichiometry which can be used in the stereospecific polymerization of unsaturated monomers, can be represented by the general formula:Me(OR).sub.3 *(Me.sub.1 R.sup.1 R.sup.2 R.sup.3).sub.xwherein, Me represents a metal with atomic number 21, 39, or an atomic number between 57 and 71, OR is an alkoxylic group of an alcohol; Me represents a metal of the group IIIA, whereas R.sup.1, R.sup.2, R.sup.3 can be H, or a linear, branched or cyclo-aliphatic alkyl radical containing from 1 to 10 carbon atoms and x is an integer (3 or 4) and depends on the type of alkoxide used.The preparation of the complexes is described and their use in the stereospecific polymerization of unsaturated monomers.

    摘要翻译: 可用于不饱和单体的立体有择聚合的具有明确化学计量的镧系元素的有机金属络合物可用通式表示:Me(OR)3 *(Me1R1R2R3)x其中,Me表示原子序数为21的金属 39,或原子序数在57和71之间,OR是醇的烷氧基; Me表示IIIA族的金属,而R1,R2,R3可以是H或含有1至10个碳原子的直链,支链或环脂族烷基,x是整数(3或4),取决于 使用的醇盐类型。 描述了配合物的制备及其在不饱和单体的立体有择聚合中的用途。