Composition and process for controlled radical polymerization using multifunctional initiator/regulator compounds
    23.
    发明授权
    Composition and process for controlled radical polymerization using multifunctional initiator/regulator compounds 失效
    使用多功能引发剂/调节剂化合物控制自由基聚合的组成和方法

    公开(公告)号:US06573347B1

    公开(公告)日:2003-06-03

    申请号:US09461927

    申请日:1999-12-15

    IPC分类号: C08F404

    CPC分类号: C08F2/38 C08F4/00 C08K5/34926

    摘要: The present invention relates to a polymerizable composition comprising a) at least one ethylenically unsaturated monomer and b1) at least one multifunctional triazinyl based 2,2,6,6 tetramethylpiperidine-1-oxyl and a free radical initiator or b2) at least one multifunctional triazinyl based 2,2,6,6 tetramethylpiperidine-1-oxyl-ether. Further aspects of the present invention are a process for polymerizing ethylenically unsaturated monomers, the (co)polymers obtainable by this process and the use of multifunctional triazinyl based 2,2,6,6 tetramethylpiperidine-1-oxyls in combination with a free radical initiator, or a multifunctional triazinyl based 2,2,6,6 tetramethylpiperidine-1-oxyl-ethers for controlled polymerization. In a particularly preferred embodiment at least one additional heating step at a temperature from 140 to 280° C. is applied after polymerization is completed.

    摘要翻译: 本发明涉及一种可聚合组合物,其包含a)至少一种烯属不饱和单体和b1)至少一种多官能三嗪基2,2,6,6四甲基哌啶-1-氧基和自由基引发剂或b2)至少一种多官能 三嗪基2,2,6,6四甲基哌啶-1-氧基醚。 本发明的其它方面是聚合烯键式不饱和单体的方法,可通过该方法获得的(共)聚合物和使用多官能三嗪基基2,2,6,6四甲基哌啶-1-氧基与自由基引发剂 ,或用于受控聚合的多官能三嗪基2,2,6,6四甲基哌啶-1-氧基醚。 在特别优选的实施方案中,在聚合完成后,施加140-180℃温度下的至少一个另外的加热步骤。

    Process for stabilizing ethylenically unsaturated compounds and
stabilized monomer compositions
    27.
    发明授权
    Process for stabilizing ethylenically unsaturated compounds and stabilized monomer compositions 失效
    用于稳定烯属不饱和化合物和稳定的单体组合物的方法

    公开(公告)号:US5258138A

    公开(公告)日:1993-11-02

    申请号:US956436

    申请日:1992-10-02

    CPC分类号: C07C51/50 C07C67/62 C07C7/20

    摘要: A process for stabilizing an ethylenically unsaturated monomer or oligomer from premature polymerization is disclosed whereby a stabilizing amount of an amine, preferably a substituted hindered amine, in combination with phenothiazine or other related heterocyclic moiety is added to said polymerizable monomer or oligomer. The ethylenically unsaturated monomer or oligomer encompass vinyl monomers or oligomers bearing at least one polymerizable moiety. The combination of substituted hindered amine plus phenothiazine inhibits premature polymerization in the liquid and/or vapor phase.

    摘要翻译: 公开了一种从过早聚合中稳定烯属不饱和单体或低聚物的方法,其中将稳定量的胺,优选取代的受阻胺与吩噻嗪或其它相关杂环部分结合加入到所述可聚合单体或低聚物中。 烯键式不饱和单体或低聚物包含具有至少一个可聚合部分的乙烯基单体或低聚物。 取代的受阻胺加吩噻嗪的组合抑制液体和/或气相中的过早聚合。

    Alkylated N,N-dibenzylhydroxylamines and polyolefin compositions
stabilized therewith
    30.
    发明授权
    Alkylated N,N-dibenzylhydroxylamines and polyolefin compositions stabilized therewith 失效
    烷基化N,N-二苄基羟胺和用其稳定的聚烯烃组合物

    公开(公告)号:US4703073A

    公开(公告)日:1987-10-27

    申请号:US908930

    申请日:1986-09-15

    摘要: Alkylated N,N-dibenzylhydroxylamine derivatives are effective in stabilizing polyolefin compositions containing a stabilizer or mixture of stabilizers selected from the group consisting of the phenolic antioxidants, the hindered amine light stabilizers, the alkylated hydroxybenzoate light stabilizers, the ultraviolet light absorbers, the organic phosphorus compounds, the alkaline metal salts of fatty acids and the thiosyner-gists, against degradation upon high temperature extrusion, exposure to the combustion products of natural gas, gamma irradiation or upon storage for extended periods.

    摘要翻译: 烷基化的N,N-二苄基羟胺衍生物在稳定聚烯烃组合物中是有效的,所述聚烯烃组合物含有选自酚类抗氧化剂,受阻胺光稳定剂,烷基化羟基苯甲酸酯光稳定剂,紫外光吸收剂,有机磷 化合物,脂肪酸和硫代聚合物的碱金属盐,防止在高温挤出时的降解,暴露于天然气的燃烧产物,γ照射或长时间储存​​。