Title:
PRODUCTION OF LOWER POLYMER OF ALFA-OLEFIN
Document Type and Number:
Japanese Patent JP3911751
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To produce lower polymers of an α-olefin such as 1-hexene in high yield and selectivity while suppressing the byproduction of polymers by continuously polymerizing the α-olefin into a lower polymer using a specific catalyst.
SOLUTION: In the production of lower polymers of an α-olefin, a product prepared at least from (a) a chromium compound, (b) a nitrogen-containing compound selected from an amine, an amide and an imide and (c) an alkylaluminum compound is used as a chromium-based catalyst, and the reaction is continuously carried out while keeping the molar ratio of lower polymers of the α-olefin/the α-olefin in the reaction liquid at 0.05-1.00. The chromium- based catalyst is optionally compounded further with (d) a halogen-containing compound. The ratios of the composition of the catalysts are preferably (a):(b):(c)=1:0.1-10:1-100 and (a):(b):(c):(d)=1:0.1-10:1-100:0.1-20. The lower polymerization reaction is preferably carried out with a stirrer-type flow reactor. The concentration of the α-olefin in the reaction liquid is preferably ≥0.5mol/l.
Inventors:
Ryogo Araki
Hirofumi Nakamura
Miaki Namba
Takeshi Okano
Hirofumi Nakamura
Miaki Namba
Takeshi Okano
Application Number:
JP1223597A
Publication Date:
May 09, 2007
Filing Date:
January 27, 1997
Export Citation:
Assignee:
Mitsubishi Chemical Corporation
International Classes:
B01J31/12; C07C2/30; C07B61/00; C07C2/32; C07C11/02; C07C11/107; (IPC1-7): C07C11/107; B01J31/12; C07C2/30; C07C2/32; C07C11/02; //C07B61/00
Domestic Patent References:
| JP7149675A | ||||
| JP7149677A | ||||
| JP7149672A | ||||
| JP8003216A |
Attorney, Agent or Firm:
Hasegawa Soji
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