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Title:
MANUFACTURING METHOD FOR PROPYLENE POLYMER
Document Type and Number:
WIPO Patent Application WO/2011/052757
Kind Code:
A1
Abstract:
The disclosed method for manufacturing a propylene polymer uses a horizontal polymerisation reactor which is internally equipped with an agitator which rotates around the horizontal axis thereof. Propylene, or propylene and an α-olefin (excluding propylene) is/are polymerised in the presence of a catalyst by a continuous gas-phase polymerisation process which uses the heat of vaporization of liquefied propylene to remove the heat of reaction. A plurality of area divisions having different temperatures can be set in the reactor along the direction of the horizontal axis thereof, and at least condition (A) or condition (B) is satisfied. Condition (A): The temperature differential Δ T1 (°C) (=Tω-Tα) between the temperature (Tα) of the area division which includes the terminal on the upstream side of the reactor, and the temperature (Tω) of the area division which includes the terminal on the downstream side of the reactor is 0.1-20°C. Condition (B): The temperature differential Δ T2 (°C) (=Tx-Tz) between the temperature (Tx) of the area division which includes a catalyst supply section and the temperature (Tz) of the dew point of the gas mixture in the reactor is 0-5°C.

Inventors:
KOBAYASHI YOSHITAKA
NAKASHIMA TAKANORI
YUKAWA KIYOSHI
YAMADA YUSUKE
AOYAMA HAJIME
IWAI NOBUHIRO
Application Number:
PCT/JP2010/069381
Publication Date:
May 05, 2011
Filing Date:
October 29, 2010
Export Citation:
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Assignee:
JAPAN POLYPROPYLENE CORP (JP)
KOBAYASHI YOSHITAKA
NAKASHIMA TAKANORI
YUKAWA KIYOSHI
YAMADA YUSUKE
AOYAMA HAJIME
IWAI NOBUHIRO
International Classes:
C08F2/34; C08F4/64; C08F10/06
Domestic Patent References:
WO2007088887A12007-08-09
WO2000042081A12000-07-20
Foreign References:
JP2008120842A2008-05-29
JP2008115321A2008-05-22
JP2009073890A2009-04-09
JPH07504708A1995-05-25
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JPH0794485B21995-10-11
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Other References:
See also references of EP 2495260A4
HARUO SHIRAMIZU: "Nendo Kobutsugaku", 1995, ASAKURA PUBLISHING CO., LTD.
"Kagaku Kogaku Binran", MARUZEN CO., LTD., pages: 485
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CARMAN ET AL., MACROMOLECULES, vol. 10, 1977, pages 536
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MACROMOLECULES, 1982, pages 1150
Attorney, Agent or Firm:
HAMADA Yuriko et al. (JP)
Yuriko Hamada (JP)
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