Copolymerizations of oxygen-functionalized olefins with propylene using metallocene/methylaluminoxane catalyst

被引:78
作者
Hakala, K
Lofgren, B
Helaja, T
机构
[1] Helsinki Univ Technol, Ctr Polymer Sci, FIN-02151 Espoo, Finland
[2] Univ Helsinki, Dept Chem, FIN-00014 Helsinki, Finland
关键词
D O I
10.1016/S0014-3057(97)00227-9
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Nine oxygen-functionalized olefins were copolymerized with propylene by using a homogeneous Et(Ind)(2)ZrCl2 catalyst activated with methylaluminoxane (MAO). In addition to alcohols, comonomers containing acid or ester functionalities could also be copolymerized. The structure of the comonomer had a marked effect on its polymerizability and on the deactivation of the catalyst. The longer the spacer group the better the incorporation of the comonomer. The highest comonomer content of polymer (2.7 wt%) was achieved with 10-undecen-1-ol and the highest conversion (12.1%) with 10-undecenoic acid. Steric protection of the functional group diminished the deactivating influence of the comonomer. The comonomers containing keto or weakly shielded ester groups poisoned the catalyst most. Incorporation of functional comonomer was accompanied by a decrease in the melting temperature of the polymer. The molar masses of the copolymers were slightly lower than the molar mass of the propylene homopolymer and the molar mass distributions of all copolymers were narrow. (C) 1998 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1093 / 1097
页数:5
相关论文
共 14 条
[1]   Functionalization of polyethylenes via metallocene/methylaluminoxane catalyst [J].
Aaltonen, P ;
Lofgren, B .
EUROPEAN POLYMER JOURNAL, 1997, 33 (08) :1187-1190
[2]   SYNTHESIS OF FUNCTIONAL POLYETHYLENES WITH SOLUBLE METALLOCENE/METHYLALUMINOXANE CATALYST [J].
AALTONEN, P ;
LOFGREN, B .
MACROMOLECULES, 1995, 28 (15) :5353-5357
[3]   Synthesis of hydroxyl group containing polyolefins with metallocene/methylaluminoxane catalysts [J].
Aaltonen, P ;
Fink, G ;
Lofgren, B ;
Seppala, J .
MACROMOLECULES, 1996, 29 (16) :5255-5260
[4]   COPOLYMERIZATION OF ALPHA-OLEFINS WITH OMEGA-HALO-ALPHA-OLEFINS BY USE OF ZIEGLER CATALYSTS [J].
BACSKAI, R .
JOURNAL OF POLYMER SCIENCE PART A-GENERAL PAPERS, 1965, 3 (7PA) :2491-&
[5]  
BOOR J, 1979, ZIEGLER NATTA CATALY, P532
[6]   FUNCTIONALIZED POLYOLEFINS PREPARED BY THE COMBINATION OF BORANE MONOMERS AND TRANSITION-METAL CATALYSTS [J].
CHUNG, TC .
MACROMOLECULAR SYMPOSIA, 1995, 89 :151-162
[7]   SYNTHESIS AND FUNCTIONALIZATION OF UNSATURATED POLYETHYLENE - POLY(ETHYLENE-CO-1,4-HEXADIENE) [J].
CHUNG, TC ;
LU, HL ;
LI, CL .
MACROMOLECULES, 1994, 27 (26) :7533-7537
[8]  
Giannini U., 1968, J POLYM SCI C, V22, P157
[9]   HOMOGENEOUS ZIEGLER-NATTA POLYMERIZATION OF FUNCTIONALIZED MONOMERS CATALYZED BY CATIONIC GROUP-IV METALLOCENES [J].
KESTI, MR ;
COATES, GW ;
WAYMOUTH, RM .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1992, 114 (24) :9679-9680
[10]   REGIOSELECTIVE COPOLYMERIZATION OF 5-VINYL-2-NORBORNENE WITH ETHYLENE USING ZIRCONOCENE-METHYLALUMINOXANE CATALYSTS - A FACILE ROUTE TO FUNCTIONAL POLYOLEFINS [J].
MARATHE, S ;
SIVARAM, S .
MACROMOLECULES, 1994, 27 (05) :1083-1086