Précédent
Suivant
Brevet : EP2495260 - PROCÉDÉ DE FABRICATION DE POLYMÈRE DE PROPYLÈNE
Titre
PROCÉDÉ DE FABRICATION DE POLYMÈRE DE PROPYLÈNE
N° et date de publication de la demande
EP2495260 - 05/09/2012
Type de la demande
A1
N° et date de dépôt
EP10826887.1 - 29/10/2010
N° et date de priorité
JP2009249568 - 29/10/2009 ; JP2009296556 - 27/12/2009 ; JP2009299307 - 31/12/2009
Classification CIB
Classification CPC
B01J 8/226 ; B01J 8/228 ; B01J2208/00274 ; B01J2208/00283 ; B01J2219/00198 ; B01J2219/00202 ; B01J2219/0022 ; B01J2219/182 ; C08F 10/06 ; C08F 110/06 ; C08F 210/06 ; B01J 8/226 ; B01J 8/228 ; B01J2208/00274 ; B01J2208/00283 ; B01J2219/00198 ; B01J2219/00202 ; B01J2219/0022 ; B01J2219/182 ; C08F 10/06 ; C08F 110/06 ; C08F 210/06
Famille de brevets
EP2495260A1 ; CN102597013A ; US2012302716A1 ; WO2011052757A1
Abrégé
An object is to develop a method for stably producing a propylene-based polymer together with inhibiting generation of an aggregated polymer, reducing a generation amount of fine powder, and thereby enhancing production efficiency. The present invention relates to a method for producing a propylene-based polymer, comprising polymerizing propylene or propylene and an ±-olefin except propylene in the presence of a catalyst using a horizontal polymerization reactor equipped with a stirrer rotating around a horizontal axis in the inside of the reactor by a continuous vapor-phase polymerization method in which heat of reaction is removed by heat of vaporization of liquefied propylene, wherein the reactor can set a plurality of area sections different in temperature in a horizontal axis direction in the inside of the reactor and at least one of the following requirements (A) and (B) is satisfied: requirement (A): temperature difference ”T1 (°C) (= TÉ - T±) between temperature (T±) of an area section including an upstream end of the reactor and temperature (TÉ) of an area section including a downstream end thereof is 0.1 to 20°C; requirement (B): temperature difference ”T2 (°C) (= Tx - Tz) between temperature (Tx) of an area section including a catalyst feed part and dew point (Tz) of mix gas in the reactor is 0 to 5°C.
INTERVENANTS
Déposant
JAPAN POLYPROPYLENE CORPORATION - 14-1, SHIBA 4-CHOME MINATO-KU TOKYO 108-0014 - JP
Titulaire
JAPAN POLYPROPYLENE CORPORATION - 14-1, SHIBA 4-CHOME MINATO-KU TOKYO 108-0014 - JP
Inventeur
KOBAYASHI YOSHITAKA ICHIHARA-SHI CHIBA - JP
NAKASHIMA TAKANORI ICHIHARA-SHI CHIBA - JP
YUKAWA KIYOSHI ICHIHARA-SHI CHIBA - JP
YAMADA YUSUKE ICHIHARA-SHI CHIBA - JP
AOYAMA HAJIME ICHIHARA-SHI CHIBA - JP
IWAI NOBUHIRO ICHIHARA-SHI CHIBA - JP
Mandataire
HOFFMANN EITLE - PATENT- UND RECHTSANWALTE PARTMBB ARABELLASTRASSE 30 81925 MUNCHEN - DE
STATUT EN FRANCE : Déchu
Délivrance
04/06/2014
Date de constatation de déchéance
-
30/06/2015 (BOPI 2015-31)
Date de paiement de la prochaine annuité
31/10/2014
