EP 0662095 A1 19950712 - PROCESS FOR POLYMERIZING ALPHA-OLEFIN.
Title (en)
PROCESS FOR POLYMERIZING ALPHA-OLEFIN.
Title (de)
VERFAHREN ZUR POLYMERISATION VON ALPHA-OLEFINEN.
Title (fr)
PROCEDE DE POLYMERISATION DE L'ALPHA-OLEFINE.
Publication
Application
Priority
- US 9309009 W 19930923
- US 95055692 A 19920925
Abstract (en)
[origin: WO9407926A1] A process for polymerizing one or more (alpha)-olefins of up to 10 carbon atoms which comprises contacting the one or more (alpha)-olefin under polymerization conditions with a catalyst system comprising: (a) a titanium halide-containing magnesium, containing procatalyst component wherein the component is obtained by contacting a magnesium compound of the formula MgR'R'', wherein R' and R'' are, independently, alkoxide group, aryloxide group or halogen, with a halogenated tetravalent titanium compound in the presence of a halohydrocarbon and an alkyl ester of a polycarboxylic acid electron donor, (b) an organoaluminum cocatalyst component, and (c) an organosilane selectivity control agent represented by general formula (I) wherein R1, R2 and R3, are, independently, alkyl group of 1 to 12 carbon atoms; aryl group of 1 to 12 carbon atoms, alkaryl group of 1 to 12 carbon atoms, aralkyl of 1 to 12 carbon atoms or halogen; and R4 is hydrocarbyloxy of 1 to 2 carbon atoms. The process affords high catalyst productivity and produces polymer products that have broad molecular weight distribution while retaining low oligomer content properties.
[origin: WO9407926A1] A process for polymerizing one or more alpha -olefins of up to 10 carbon atoms which comprises contacting the one or more alpha -olefin under polymerization conditions with a catalyst system comprising: (a) a titanium halide-containing magnesium, containing procatalyst component wherein the component is obtained by contacting a magnesium compound of the formula MgR'R'', wherein R' and R'' are, independently, alkoxide group, aryloxide group or halogen, with a halogenated tetravalent titanium compound in the presence of a halohydrocarbon and an alkyl ester of a polycarboxylic acid electron donor, (b) an organoaluminum cocatalyst component, and (c) an organosilane selectivity control agent represented by general formula (I) wherein R<1>, R<2> and R<3>, are, independently, alkyl group of 1 to 12 carbon atoms; aryl group of 1 to 12 carbon atoms, alkaryl group of 1 to 12 carbon atoms, aralkyl of 1 to 12 carbon atoms or halogen; and R<4> is hydrocarbyloxy of 1 to 2 carbon atoms. The process affords high catalyst productivity and produces polymer products that have broad molecular weight distribution while retaining low oligomer content properties.
IPC 1-7
IPC 8 full level
C08F 4/654 (2006.01); C08F 10/00 (2006.01)
CPC (source: EP)
C08F 10/00 (2013.01)
C-Set (source: EP)
Citation (search report)
See references of WO 9407926A1
Designated contracting state (EPC)
AT BE DE ES FR GB GR IT NL PT SE
DOCDB simple family (publication)
WO 9407926 A1 19940414; AU 5136493 A 19940426; AU 672637 B2 19961010; CA 2145538 A1 19940414; EP 0662095 A1 19950712; JP H08504446 A 19960514
DOCDB simple family (application)
US 9309009 W 19930923; AU 5136493 A 19930923; CA 2145538 A 19930923; EP 93922327 A 19930923; JP 50915594 A 19930923