Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2010-01-11
2011-12-27
Lu, Caixia (Department: 1765)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S133000, C526S134000, C526S164000, C502S102000, C502S171000, C502S202000, C525S232000, C525S236000
Reexamination Certificate
active
08084565
ABSTRACT:
A catalyst for polymerization of conjugated diene is provided, which facilitates manufacture of a conjugated diene polymer with a high 1,4-cis structure content, leaves less aluminum residue on polymerization, and has high activity. A method of manufacturing conjugated diene polymers using the catalyst is also provided. A catalyst for polymerization of conjugated diene comprises (A) an yttrium compound; (B) an ionic compound including a non-coordinate anion and a cation; and (C) an organometallic compound including an element selected from the groups 2, 12 and 13 of the periodic table.
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Eikyuu Mitsuharu
Ishiguchi Kouji
Murakami Masato
Okamoto Naomi
Suzuki Michinori
Clark Hill PLC
Lu Caixia
Ube Industries Ltd.
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