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1. WO2000042081 - PROCESS FOR PRODUCING POLYPROPYLENE OR PROPYLENE RANDOM COPOLYMER

Publication Number WO/2000/042081
Publication Date 20.07.2000
International Application No. PCT/JP1999/007218
International Filing Date 22.12.1999
Chapter 2 Demand Filed 14.07.2000
IPC
C08F 10/00 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
10Homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
C08F 210/06 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
210Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
04Monomers containing three or four carbon atoms
06Propene
C08F 210/16 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
210Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
16Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
CPC
C08F 10/00
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
10Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
C08F 210/06
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
210Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
04Monomers containing three or four carbon atoms
06Propene
C08F 210/16
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
210Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
16Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
Y10S 526/901
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
526Synthetic resins or natural rubbers -- part of the class 520 series
901Monomer polymerized in vapor state in presence of transition metal containing catalyst
Applicants
  • CHISSO CORPORATION [JP/JP]; 6-32, Nakanoshima 3-chome, Kita-ku Osaka-shi, Osaka 530-0005, JP (AllExceptUS)
  • KIMURA, Masami [JP/JP]; JP (UsOnly)
  • NAKASHIMA, Takanori [JP/JP]; JP (UsOnly)
  • OKAYAMA, Chikashi [JP/JP]; JP (UsOnly)
Inventors
  • KIMURA, Masami; JP
  • NAKASHIMA, Takanori; JP
  • OKAYAMA, Chikashi; JP
Priority Data
11/603413.01.1999JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) PROCESS FOR PRODUCING POLYPROPYLENE OR PROPYLENE RANDOM COPOLYMER
(FR) PROCEDE DE PRODUCTION DE POLYPROPYLENE OU D'UN COPOLYMERE STATISTIQUE DE PROPYLENE
Abstract
(EN)
A process for producing polypropylene and/or a propylene random copolymer with a stereoregular catalyst comprising a combination of a titanium-containing solid catalyst component (A) and an organoaluminum compound (B) and optionally containing an organosilicon compound (C), which comprises [I] supplying propylene or at least one of ethylene and C4-20 $g(a)-olefins to the component (A) in a small amount in the presence of an organoaluminum compound (B') and optionally an organosilicon compound (C') to preliminarily activate the component (A) as a pretreatment for the homopolymerization of propylene or random copolymerization of propylene with an $g(a)-olefin other than propylene; and [II] adding an organosilicon compound (C'') to the stereoregular catalyst thus preliminarily activated with an $g(a)-olefin in an Si/Ti molar ratio of 0.1 to 50 to prepare a catalyst, which is used to conduct the polymerization. Thus, polypropylene (propylene homopolymer) or a propylene random copolymer (propylene/$g(a)-olefin random copolymer) is produced both of which are reduced in the content of particles of irregular shapes such as massive or stringy particles.
(FR)
L'invention concerne un procédé permettant de produire du polypropylène et/ou un copolymère statistique de propylène à l'aide d'un catalyseur stéréorégulier renfermant une combinaison d'un constituant catalytique solide contenant du titane (A) et un composé d'organoaluminium (B), et éventuellement un composé organosilicié (C). Ce procédé consiste tout d'abord à fournir [I] du propylène, ou soit de l'éthylène soit des alpha-oléfines C4-20, au constituant (A), en faible quantité et en présence d'un composé d'organoaluminium (B'), et éventuellement un composé organosilicié (C') permettant une activation préliminaire dudit constituant (A) et ainsi un prétraitement pour une homopolymérisation du propylène ou une copolymérisation statistique du propylène avec une alpha-oléfine autre que le propylène. Ce procédé consiste ensuite à ajouter [II] un composé organosilicié (C'') audit catalyseur stéréorégulier ayant subi une activation préliminaire au moyen d'une alpha-oléfine, selon un rapport molaire Si/Ti variant entre 0,1 et 50, afin de préparer un catalyseur destiné à être utilisé pour effectuer la polymérisation. On produit ainsi du polypropylène (homopolymère de propylène) ou un copolymère statistique de propylène (propylène/copolymère statistique alpha-oléfinique), ces deux corps présentant une teneur réduite en particules de formes irrégulières, par exemple des particules massives ou fibreuses.
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