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    • 7. 发明公开
    • Reduced fouling in process for production of EP
    • Verminderte Verschmutzung in einem Verfahren zur Herstellung von EP。
    • EP0652234A2
    • 1995-05-10
    • EP94117016.9
    • 1994-10-27
    • BAYER RUBBER INC.
    • Knauf, Thomas F.Osman, AkhtarPadliya, Dilipkumar
    • C08F4/68C08F210/16C08F210/18
    • C08F10/00C08F4/68
    • A process for producing EP and EPDM polymers with a reduction in fouling is provided, which process comprises polyemrizing ethylene, an alpha-olefin and a nonconjugated diolefin (if utilized) in a polymerization medium comprising a hydrocarbon diluent at a temperature of from about -50°C to about 150°C in the presence of a catalyst system comprising (a) a vanadium compound, (b) diethyl aluminum chloride, ethyl aluminum sesquichloride or ethyl aluminum dichloride and (c) an organo aluminum compound of the formula R₃Al wherein R is an alkyl group having from 8 to 12 carbon atoms and, optionally, triethyl aluminum, the molar ratio of chloride in diethyl aluminum chloride to the total aluminum content in (b) and (c) being from about 0.7:1 to about 0.95:1, the molar ratio of the chloride in ethyl aluminum sesquichloride to the total aluminum content in (b) and (c) being from about 0.7:1 to about 1.4:1 and the molar ratio of the chloride in ethyl aluminum dichloride to the total aluminum content in (b) and (c) being from about 0.7:1 to about 1.8:1 and the ratio of the mols of vanadium compound to the total mols of diethyl aluminum chloride and ethyl aluminum sesquichloride being from about 1:10 to about 1:50 to the desired conversion.
    • 提供了一种生产具有减少结垢的EP和EPDM聚合物的方法,该方法包括在包含烃稀释剂的聚合介质中在约-50℃的温度下聚乙烯,α-烯烃和非共轭二烯烃(如果使用) 在(a)钒化合物,(b)二乙基氯化铝,乙基倍半氯化铝或二氯化乙基铝的催化剂体系的存在下,在约0.03至约150℃的温度下,和(c)式R3Al的有机铝化合物,其中R 是具有8至12个碳原子的烷基和任选的三乙基铝,(b)和(c)中氯化铝中氯化物与总铝含量的摩尔比为约0.7:1至约0.95:1, 如图1所示,(b)和(c)中的乙基倍半氯化铝中的氯化物与总铝含量的摩尔比为约0.7:1至约1.4:1,二氯乙基铝中的氯化物与总氯化物的摩尔比 明矾 (b)和(c)中的含量为约0.7:1至约1.8:1,钒化合物的摩尔数与二乙基氯化铝和三乙基铝的总摩尔数的比例为约1:10至约 1:50到所需的转换。
    • 9. 发明公开
    • Butyl rubber with a bimodal molecular weight distribution
    • Butylkautschuk mit bimodaler Molekulargewichtsverteilung。
    • EP0579058A1
    • 1994-01-19
    • EP93110610.8
    • 1993-07-02
    • BAYER RUBBER INC.
    • Puskas, Judit EvaKaszas, Gabor
    • C08F210/12C08F2/38
    • C08F210/10
    • A polymerization process is provided for producing a butyl rubber with a bimodal molecular weight distribution which comprises introducing isobutylene, a conjugated diolefin monomer having from 4 to 8 carbon atoms, from about 1 x 10⁻⁵ to about 1 x 10⁻³ moles of an initiator component per mole of isobutylene, said initiator component being selected from the group consisting of an initiator component having the formula:

      in which R₁, R₂ and R₃ are selected from the group consisting of alkyl, aryl and aralkyl groups and can be the same or different and i is a positive whole number from 2 to 6, and an initiator component having an adamantyl nucleus bearing from 2 to 4 hydroxyl groups an inert organic solvent and from about 1 x 10⁻⁴ to about 1 x 10⁻³ moles of water per litre of inert organic solvent into a suitable reaction vessel at a temperature of from about -120°C to about -50°C, adding a solution of from about 5 x 10⁻⁵ to about 1 x 10⁻² moles of a Lewis acid per mole of isobutylene in an organic solvent and polymerizing the monomers to form said butyl rubber.
    • 提供聚合方法用于生产具有双峰分子量分布的丁基橡胶,其包括引入异丁烯,具有4至8个碳原子的共轭二烯烃单体,约1×10 5至约1×10 5, - > 3摩尔的引发剂组分/摩尔异丁烯,所述引发剂组分选自具有下式的引发剂组分:其中R 1,R 2和R 3选自烷基 芳基和芳烷基,并且可以相同或不同,i为2至6的正整数,并且具有2至4个羟基的金刚烷基核的引发剂组分为惰性有机溶剂和约1×10 6 - > 4>至约1×10 -3摩尔水/升惰性有机溶剂,在约-120℃至约-50℃的温度下加入合适的反应容器中,加入溶液 为约5×10 -5至约1×10 -2摩尔的a 路易斯酸/有机溶剂中的每摩尔异丁烯,并使单体聚合以形成所述丁基橡胶。