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Title:
PROCESS FOR PRODUCING CRYSTALLINE 1,2-POLYBUTADIENE
Document Type and Number:
WIPO Patent Application WO/2004/009652
Kind Code:
A1
Abstract:
1,3-Butadiene is polymerized in a hydrocarbon solvent using either a catalyst system comprising (A) a cobalt salt, (B1) a phosphine compound having one C3 or higher branched aliphatic group or C5 or higher alicyclic group and two aromatic groups, and (C) an organoaluminum compound or a catalyst system comprising (A) a cobalt salt, (B) at least one of (B1) a phosphine compound having one C3 or higher branched aliphatic group or C5 or higher alicyclic group and two aromatic groups and (B2) a triarylphosphine compound having three aromatic groups, (C) an organoaluminum compound, and (D) an active halogen to obtain crystalline 1,2-polybutadiene.

Inventors:
Shibata, Masahiro c/o JSR CORPORATION (6-10 Tsukiji 5-chom, Chuo-ku Tokyo, 104-8410, JP)
Ono, Hisao c/o JSR CORPORATION (6-10 Tsukiji 5-chom, Chuo-ku Tokyo, 104-8410, JP)
Application Number:
PCT/JP2003/009181
Publication Date:
January 29, 2004
Filing Date:
July 18, 2003
Export Citation:
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Assignee:
JSR CORPORATION (6-10, Tsukiji 5-chome Chuo-ku, Tokyo, 104-8410, JP)
Shibata, Masahiro c/o JSR CORPORATION (6-10 Tsukiji 5-chom, Chuo-ku Tokyo, 104-8410, JP)
Ono, Hisao c/o JSR CORPORATION (6-10 Tsukiji 5-chom, Chuo-ku Tokyo, 104-8410, JP)
International Classes:
C08F4/70; C08F36/04; (IPC1-7): C08F4/70; C08F36/06
Domestic Patent References:
WO2002010232A1
Foreign References:
JPH06298867A
JPH075927A
JPH10158333A
JPH0859733A
US5879805A
US5548045A
JPH06136033A
US4954125A
US3535303A
Other References:
See also references of EP 1535931A1
Attorney, Agent or Firm:
Shirai, Shigetaka (Heikichi Bldg. 3F, 8-5 Toranomon 1-chom, Minato-ku Tokyo, 105-0001, JP)
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