Polymers modified by silanes
    23.
    发明授权
    Polymers modified by silanes 有权
    由硅烷改性的聚合物

    公开(公告)号:US08476375B2

    公开(公告)日:2013-07-02

    申请号:US13001677

    申请日:2009-07-02

    Abstract: The invention relates to a process for grafting hydrolysable silane groups to a polyolefin, comprising reacting the polyolefin with an unsaturated silane, containing an olefinic —C═C— bond or acetylenic —C≡C— bond and 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 polymer. The silane contains an aromatic ring or a further olefinic double bond or acetylenic unsaturation, the aromatic ring or the further olefinic double bond or acetylenic unsaturation being conjugated with the olefinic —C═C— or acetylenic —C≡C— unsaturation of the silane. The unsaturated silane may also contains electron-withdrawing moiety with respect to the olefinic —C═C— or acetylenic —C≡C— bond. 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.

    Abstract translation: 本发明涉及将可水解硅烷基接枝到聚烯烃上的方法,包括使聚烯烃与不饱和硅烷反应,所述不饱和硅烷含有烯烃-C = C-键或炔属-C = C-键并且具有至少一个可水解基团键合到 Si或其水解产物,在能够在聚合物中产生自由基位点的手段存在下进行。 所述硅烷含有芳环或其它烯属双键或炔属不饱和键,所述芳环或所述其它烯属双键或炔属不饱和键与所述硅烷的烯烃-C = C-或炔属-C = C-不饱和键结合。 相对于烯烃-C = C-或炔属-C = C-键,不饱和硅烷还可含有吸电子部分。 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。

    Modified Polyolefins
    26.
    发明申请
    Modified Polyolefins 有权
    改性聚烯烃

    公开(公告)号:US20120283346A1

    公开(公告)日:2012-11-08

    申请号:US13520859

    申请日:2010-12-22

    CPC classification number: C08F255/02 C08F212/14 C08F230/08 C08F236/14

    Abstract: The invention provides a process for grafting silane or silicone functionality onto a polyolefin, comprising reacting the polyolefin with an unsaturated monomer (A) containing an olefinic —C═C— bond or acetylenic —C≡C— bond and a reactive functional group X in the presence of means capable of generating free radical sites in the polyolefin and with an organosilicon compound (B) having a functional group Y which is reactive with the functional group X of the unsaturated monomer (A), characterized in that the unsaturated monomer (A) contains an aromatic ring or a further olefinic double bond or acetylenic unsaturation, the aromatic ring or the further olefinic double bond or acetylenic unsaturation being conjugated with the olefinic —C═C— or acetylenic —C≡C— unsaturation of the unsaturated monomer (A).

    Abstract translation: 本发明提供将硅烷或硅氧烷官能度接枝到聚烯烃上的方法,包括使聚烯烃与含有烯烃-C≡C-键或炔属-C≡C-键和反应性官能团X的不饱和单体(A)反应 存在能够在聚烯烃中产生自由基位点的装置和具有与不饱和单体(A)的官能团X反应的官能团Y的有机硅化合物(B)的存在,其特征在于不饱和单体(A )含有芳环或另外的烯属双键或炔属不饱和键,芳环或其它烯属双键或炔属不饱和键与不饱和单体的烯属-C≡C-或炔属-C≡C-不饱和键相结合( 一个)。

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