Title:
【発明の名称】始動重合方法
Document Type and Number:
Japanese Patent JP2002508407
Kind Code:
A
Abstract:
The subject-matter of the present invention is thus a process for starting up a gas phase olefin polymerisation reaction carried out using a Ziegler-Natta type catalyst based on a transition metal in a fluidized-bed reactor, through which passes a reaction gas mixture comprising the olefin, an inert gas, hydrogen and optionally at least one comonomer and which operates under conditions of temperature and pressure which make it possible to start up the polymerization, characterized in that the partial pressure of the olefin and the rate of introduction of catalyst into the reactor are increased whilst maintaining the ratios of the partial pressures of the olefin to the hydrogen and to the optional comonomer or comonomers substantially constant.
Inventors:
Elzog, Mar
Application Number:
JP2000539063A
Publication Date:
March 19, 2002
Filing Date:
December 14, 1998
Export Citation:
Assignee:
BP Chemicals Limited
International Classes:
B01J8/00; B01J8/24; C08F2/00; C08F2/34; C08F4/64; C08F4/6592; C08F10/00; C08F210/16; (IPC1-7): C08F4/64; C08F2/34; C08F10/00
Attorney, Agent or Firm:
Haruo Hamada