Catalytic Copolymerization of Ethylene and Polar and Nonpolar α-Olefins in Emulsion
Catalytic Copolymerization of Ethylene and Polar and Nonpolar α-Olefins in Emulsion
复制标题
DOI：
10.1021/ma011366e
复制
发表时间：
2002-02
期刊：
影响因子：
5.5
通讯作者：
R. Soula;B. Saillard;R. Spitz;J. Claverie;M. F. Llaurro;C. Monnet
中科院分区：
文献类型：
--
作者：
R. Soula;B. Saillard;R. Spitz;J. Claverie;M. F. Llaurro;C. Monnet
研究了新型P， o螯合Ni（II）催化剂在乙烯- α-烯烃乳液中与多种长链α-烯烃共聚。采用微乳液将催化剂分散到纳米级，实现了非官能化α-烯烃与乙烯的共聚。分析了共聚物对催化剂性能和乳胶性能的影响。该方法可获得高单体掺入率和30%固含量的稳定乳胶。其它共聚单体如α、ω-二烯、ω位上带极性官能团的α-烯烃和苯乙烯也在乳液中共聚。聚合物和乳胶已经通过一系列技术进行了表征，包括13c NMR， TEM， DSC和GPC。结果表明，该乳液工艺特别适合于乙烯与极性烯烃的共聚。
Novel P,O-chelated Ni(II) catalysts for ethylene and α-olefins polymerization have been used for the copolymerization of ethylene with various long-chain α-olefins in emulsion. Nonfunctionalized α-olefins have been copolymerized with ethylene using miniemulsion to disperse the catalyst at the nanometric level. The influence of the comonomer on catalyst performances as well as latex properties has been analyzed. High comonomer incorporation and stable latex of 30% solid content can be achieved by this method. Other comonomers such as α,ω-dienes, α-olefins bearing a polar functionality in the ω-position, and styrene have also been copolymerized in emulsion. Polymers and latexes have been characterized by an array of techniques including 13 C NMR, TEM, DSC, and GPC. It is shown that this emulsion process is specially adapted for copolymerization of ethylene with polar olefins.