Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2005-04-19
2005-04-19
Choi, Ling-Siu (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S348000, C526S352000, C526S348200, C526S151000, C502S103000, C502S123000
Reexamination Certificate
active
06881802
ABSTRACT:
A catalyst obtained by contacting a specific transition metal compound (A) of Group 7 of the Periodic Table of the Elements, having a pyrazolyl group with an aluminum compound selected from organoaluminums and aluminoxanes and/or a specific boron compound, and a process for producing an addition polymer which comprises polymerizing an addition polymerizable monomer with the catalyst.
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Fujisawa Kiyoshi
Nabika Masaaki
Choi Ling-Siu
Sumitomo Chemical Company Limited
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