Title:
PRODUCTION OF SYNDIOTACTIC PROPYLENE POLYMER
Document Type and Number:
Japanese Patent JP3021672
Kind Code:
B2
Abstract:
PURPOSE: To obtain the title copolymer imparting a molded product showing high transparency, flexibility, tensile strength and surface gloss by polymerizing a large amt. of propylene and a small amt. of ethylene or specific olefin in the presence of a catalyst consisting of a metallocene and an aluminoxane.
CONSTITUTION: 50-99.5 wt.% of propylene and 0.5-50 wt.% of a compd. selected from ethylene and 4- or more C olefin represented by formula I (Ra and Rb are each H or 1-20C alkyl, etc.), are polymerized at -40-50°C under a pressure of 0.5-100 bar in a soln., a suspension or a gas phase in the presence of a catalyst consisting of a metallocene being a transition metal component and an aluminoxane represented by formula II in regard to a linear type and/or represented by formula III (R9 is 1-6C alkyl, etc.), in regard with a cyclic type to obtain the title copolymer. The transition metal component is a compd. represented by formula IV (M1 is Ti or Zr, etc.; R1 and R2 are each H, halogen or 1-10C alkyl, etc.; R3 and R4 are each a mononuclear or polynuclear hydrocarbon residue; R5 is groups represented by formulae V, VI, etc.; R6 and R7 are each H or halogen, etc., and M2 is Si, Ge or Sn).
Inventors:
Andreas Winter
Volkel Dore
Jurgen Rollman
Walter Spalek
Martin Antberg
Volkel Dore
Jurgen Rollman
Walter Spalek
Martin Antberg
Application Number:
JP40449690A
Publication Date:
March 15, 2000
Filing Date:
December 20, 1990
Export Citation:
Assignee:
HOECHST AKTIENGESELLSCHAFT
International Classes:
C08F4/42; C08F4/60; C08F4/602; C08F4/64; C08F4/642; C08F4/646; C08F4/6592; C08F4/68; C08F8/00; C08F210/06; C08J5/00; C08J5/18; C08F4/639; C08F4/6392; C08F4/659; (IPC1-7): C08F4/642; C08F210/06; C08J5/00; C08J5/18
Domestic Patent References:
| JP3200813A |
Attorney, Agent or Firm:
Mitsufumi Esaki (2 others)