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    • 7. 发明授权
    • Modified polyolefins
    • 改性聚烯烃
    • US08569417B2
    • 2013-10-29
    • US13001668
    • 2009-07-02
    • Michael BackerFrancois De BuylValerie SmitsDamien Deheunynck
    • Michael BackerFrancois De BuylValerie SmitsDamien Deheunynck
    • C08F255/00C08F255/02C08F8/12C08F8/42
    • C08F255/00C08F255/02C08F255/08C08L51/06C08L2666/02C09D151/06C09J151/06
    • The invention relates to a process for grafting hydrolysable silane groups to a polyolefin in which ethylene units, if present, form less than 50% by weight of the total polyolefin. The polyolefin is reacted with an unsaturated silane, having at least one hydrolysable group bonded to Si, or a hydrolysate thereof, in the presence of means capable of generating free radical sites in the polyolefin. The unsaturated silane has the formula R″—CH═CH—Z (I) or R″—C≡C—Z (II) in which Z represents an electron-withdrawing moiety substituted by a —SiRaR′(3-a) group wherein R represents a hydrolysable group; R′ represents a hydrocarbyl group having 1 to 6 carbon atoms; a has a value in the range 1 to 3 inclusive; and R″ represents hydrogen or a group having an electron withdrawing or any other activation effect with respect to the —CH═CH— or —C≡C— bond. The use of an unsaturated silane of the formula R″—CH═CH—Z (I) or R″—C≡C—Z (II) in carrying out the grafting reaction on the polyolefin may give enhanced grafting yield compared to grafting with an olefinically unsaturated silane such as vinyltrimethoxysilane not containing an electron withdrawing moiety Z. The invention permits to provide a silane-modified polyolefin having a high grafting efficiency while limiting/preventing polymer degradation by chain scission. The silane-modified polyolefin can be further reacted with a polar surface, a filler or a polar polymer or reacted on itself to crosslink the polyolefin and obtain enhanced physical properties of the composites made thereof.
    • 本发明涉及一种将可水解硅烷基接枝到聚烯烃上的方法,其中乙烯单元(如果存在的话)占总聚烯烃的小于50重量%。 在能够在聚烯烃中产生自由基位点的手段的存在下,聚烯烃与不饱和硅烷反应,所述不饱和硅烷具有与Si结合的至少一个可水解基团或其水解产物。 不饱和硅烷具有式R“-CH = CH-Z(I)或R”C = CZ(II),其中Z表示被-SiRaR'(3-a)基团取代的吸电子部分 其中R表示可水解基团; R'表示碳原子数1〜6的烃基。 a的值在1到3的范围内; R“表示氢或相对于-CH = CH-或-C = C-键具有吸电子或任何其它活化作用的基团。 在聚烯烃上进行接枝反应时,使用式R'-CH = CH-Z(I)或R“C = CZ(II)的不饱和硅烷可以提高接枝率, 烯属不饱和硅烷如不含吸电子部分Z的乙烯基三甲氧基硅烷。本发明允许提供具有高接枝效率的硅烷改性聚烯烃,同时通过链断裂限制/防止聚合物降解。 硅烷改性的聚烯烃可以进一步与极性表面,填料或极性聚合物反应,或者自身反应以使聚烯烃交联并获得由其制成的复合材料的增强的物理性能。
    • 10. 发明申请
    • AQUEOUS ROMP-BASED MONOLITH MATERIALS AND METHODS FOR MAKING
    • 基于ROMP的单组分材料及其制备方法
    • US20100063200A1
    • 2010-03-11
    • US12207055
    • 2008-09-09
    • Su LuLiangliang QiangYanrong ZhuZhida Pan
    • Su LuLiangliang QiangYanrong ZhuZhida Pan
    • C08L55/00B01J31/12
    • C08F290/00B01J20/28042B01J20/286B01J20/288C08F255/00C08F255/08C08F277/00C08F290/06C08F291/00C08G61/08C08L51/003C08L51/06G01N2030/528C08L2666/02
    • A water soluble ROMP catalyst, which has high catalytic efficiency for ring opening metathesis is use in the preparation of polymeric blends for use in monolithic columns. In one embodiments a method for making a polymeric blend is discolosed comprising reaction of a water-soluble ROMP catalyst with a norbornene-substituted cycloolefin polymer or a polynorbornene polymer precursor, and wherein the contacting occurs in an aqueous or polar solvent in the presence of a solid support. In another embodiment a monolithic bed is disclosed comprising the water-soluble ROMP catalyst immobilized on a surface of a solid support. Also disclosed is a monolithic bed comprising: a polymer blend, the polymer blend produced from contacting a water soluble ROMP catalyst with a norbornene-substituted cycloolefin polymer or a polynorbornene polymer precursor; and wherein the contacting occurs in an aqueous or polar solvent in the presence of a solid support.
    • 对于开环复分解具有高催化效率的水溶性ROMP催化剂用于制备用于整体柱的聚合物共混物。 在一个实施方案中,制造聚合物共混物的方法被解开,包括水溶性ROMP催化剂与降冰片烯取代的环烯烃聚合物或聚降冰片烯聚合物前体的反应,并且其中所述接触在水溶液或极性溶剂中,在 坚实的支持。 在另一个实施方案中,公开了一种整体床,其包含固定在固体载体表面上的水溶性ROMP催化剂。 还公开了一种整体床,包括:聚合物共混物,通过使水溶性ROMP催化剂与降冰片烯取代的环烯烃聚合物或聚降冰片烯聚合物前体接触而制备的聚合物共混物; 并且其中所述接触在固体载体存在下在水性或极性溶剂中进行。