Title: Process for the production of propene copolymers
Application Number: 85101851 Application Date: 1985.04.01
Publication Number: 1000703 Publication Date: 1986.05.10
Approval Pub. Date: 1988.11.09 Granted Pub. Date: 1988.11.09
International Classifi-cation: C08F4/64;C08F210/06
Applicant(s) Name: Sumitomo Chemical Co. Ltd. Address:
Inventor(s) Name: Akinopi Shiga;Jienpei Kojima;Kagago Masahiro;Kizuk
Attorney & Agent: WU XIAONAN
Abstract:
    A process for producing a propylene copolymer has improved transparency and rigidity, which comprises carrying out (A) the polymerization of a vinyl cycloalkane having at least 6 carbon atoms and (B) the polymerization of propylene either alone or with ethylene in a multiplicity of steps in the presence of a catalyst system composed of a titanium compound and an organoaluminum compound. The content of the vinyl cycloalkane unit in the resulting copolymer is 0.05 to 10,000 weight ppm.
Time: 7
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