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    • 3. 发明授权
    • Process for the selective hydrogenation of unsaturated (co)polymers
    • 不饱和(共)聚合物的选择性氢化方法
    • US07473741B2
    • 2009-01-06
    • US11381469
    • 2006-05-03
    • Gian Tommaso ViolaClaudio Cavallo
    • Gian Tommaso ViolaClaudio Cavallo
    • C08C19/02C08F36/02
    • C08F8/04C08F297/04
    • Process for the selective hydrogenation of double olefinic bonds present in polymers and copolymers of conjugated dienes, which comprises: (a) preparation of a hydrocarbon solution of the (co)polymer to be hydrogenated, optionally containing a modifier (C); (b) addition to the above solution of the (co)polymer to be hydrogenated of a catalytic solution formed “in situ” comprising: (b1) at least one bis-(cyclopentadienyl)titanium derivative having general formula (I) (C5H5)2Ti (R) (R1), wherein R and R1, the same or different, are halogens, preferably R═R1═Cl; the above compound (I) being dispersed in one or more non-solvent diluents; (b2) at least one organo-derivative having general formula (II) M(R2)(R3), wherein M is selected from zinc and magnesium, and R2 and R3, the same or different, are selected from C1-C16 alkyls, preferably C1-C8; (b3) at least one modifier (C); the above selective hydrogenation being carried out in a hydrogen atmosphere until the disappearance of the double olefinic bonds.
    • 存在于共轭二烯的聚合物和共聚物中的双烯键的选择性氢化方法,其包括:(a)制备待氢化的(共)聚合物的烃溶液,任选地含有改性剂(C); (b)向上述“原位”形成的催化剂溶液中加入待氢化的(共)聚合物的上述溶液,包括:(b1)至少一种具有通式(I)(C5H5)的双 - (环戊二烯基) 2 Ti(R)(R 1),其中R和R 1相同或不同,为卤素,优选R-R1-Cl; 上述化合物(I)分散在一种或多种非溶剂稀释剂中; (b2)至少一种具有通式(II)M(R2)(R3)的有机衍生物,其中M选自锌和镁,R2和R3相同或不同,选自C 1 -C 16烷基, 优选C1-C8; (b3)至少一种改性剂(C); 上述选择性氢化在氢气气氛中进行,直到双重烯键失去。