Sumitomo Chemical Company, Limited

Tokyo Institute of Technology

Hiroshi Kuribayashi

Osamu Ihata

Kohtaro Osakada

Daisuke Takeuchi

Yusuke Fukuda

Masayuki Fujita

Tatsuya Miyatake

Makoto Satoh

Kazuo Takaoki

A polymer comprising a unit represented by the following formula (1); and a process for producing the polymer comprising the step of polymerizing a diene compound such as 9,9-diallylfluorene in the presence of a polymerization catalyst formed by contacting a nickel compound with an organoaluminum compound and/or a boron compound: 

Diene polymer and production process thereof

A copolymer comprising (i) an olefin unit selected from the group consisting of an ethylene unit and an &#x3b1;-olefin unit having 3 to 20 carbon atoms, and (ii) a unit of a compound represented by the formula, CH&#x2550;CH&#x2014;(R)&#x2014;SOX; and a process for producing said copolymer comprising the step of contacting (i) the above-mentioned olefin, and (ii) the above-mentioned compound with a polymerization catalyst, wherein m is a number of 0 or 1, Ris an aliphatic hydrocarbylene group having 1 to 18 carbon atoms, and X is a mono-valent cationic species.

Copolymer containing functional group of sulfonic acid or its salt, and process for producing said copolymer

A catalyst component for addition polymerization containing (A) a compound containing an atom of the Group II to the Group XII or Lanthanide series in which the lowest energy level of unoccupied molecular orbital having the valence p-type atomic orbital of the atom of the Group II to the Group XII or Lanthanide series as a main component, wherein the coefficient represented by a linear combination, is 0.4 or more) is calculated to be 0.008 atomic unit (Hartree) or less by the calculation of density functional method (B3LYP/3-21G level), a catalyst for addition polymerization containing the same, and a process for producing an addition polymer with the catalyst.

Catalyst component for addition polymerization, catalyst for addition polymerization, and process for producing addition polymer

Catalyst component, catalyst for olefin polymerization and process for producing olefin polymer

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Ichihara, Japan

Hiroshi Kuribayashi