Title:
イソプレンに富んだ「FCC」C5留分の製造方法及びこの留分に由来するイソプレンの選択的重合
Document Type and Number:
Japanese Patent JP5005337
Kind Code:
B2
Abstract:
Method for producing a purified C5 fraction (A), enriched in isoprene (I) and suitable for selective catalytic polymerization of (I), starting from an initial C5 fraction (B) from a fluidized-bed catalytic cracker. Method for producing a purified C5 fraction (A), enriched in isoprene (I) and suitable for selective catalytic polymerization of (I), starting from an initial C5 fraction (B) from a fluidized-bed catalytic cracker. The method comprises subjecting an intermediate C5 fraction (C), containing less than 30 wt.% methylbutenes (II) and derived from (B), to a dehydrogenation reaction, and purifying the product to produce (A), practically free of disubstituted alkynes, 'real' alkynes and cyclopentadiene. The catalyst for polymerization of (I) comprises a conjugated diene; a rare earth metal salt (X) of an organophosphoric acid, suspended in an inert, saturated hydrocarbon solvent; an alkylating agent (Y; trialkylaluminum or dialkylaluminum hydride) with mole ratio (Y):(X) 1-5; and an alkylaluminum halide (Z) as halogen donor. An Independent claim is also included for a method for producing an isoprene homopolymer (HP) with content of cis-1,4 chains at least 98%, by using the specified catalyst system.
Inventors:
Gundon Pen Sylvie
Application Number:
JP2006500590A
Publication Date:
August 22, 2012
Filing Date:
January 19, 2004
Export Citation:
Assignee:
Society Technology Michelin
Michelin Le Cherche et Technic Anonym
Michelin Le Cherche et Technic Anonym
International Classes:
C07C7/04; C07C5/333; C07C11/18; C08F4/54; C08F4/606; C08F36/08; C08F136/08; C10G11/18; C10G49/02; C10G50/00; C10G69/12
Domestic Patent References:
| JP10158316A | ||||
| JP62123137A | ||||
| JP58154705A | ||||
| JP50002961B1 | ||||
| JP49117405A | ||||
| JP1158012A | ||||
| JP2000327703A | ||||
| JP49045375B1 |
Foreign References:
| WO2002048218A1 | ||||
| FR1203754B1 |
Attorney, Agent or Firm:
Sadao Kumakura
Nobuo Ogawa
Atsushi Hakoda
Kenji Asai
Koji Hirayama
Nobuo Ogawa
Atsushi Hakoda
Kenji Asai
Koji Hirayama