Sumitomo Chemical Company, Limited

Tokyo Institute of Technology

Osamu Ihata

Kohtaro Osakada

Daisuke Takeuchi

Hiroshi Kuribayashi

Hirofumi Johoji

Yusuke Fukuda

Masayuki Fujita

Kenji Sogo

A polyether polymer containing a defined polymerization unit (&#x2014;R&#x2014;O&#x2014;R&#x2014;O&#x2014;), Rand Rbeing derived from monomers (A) and (B), respectively; and a process for producing the polyether polymer comprising the step of copolymerizing the monomer (A) with the monomer (B) in the presence of a metal salt, wherein the monomer (A) is (A1) a non-conjugated mono-cyclic diene compound containing a cyclic skeleton, or (A2) a non-conjugated cyclic diene compound containing a mutual linking of plurality of a mono-cyclic structure having a cyclic skeleton, and the monomer (B) is an aliphatic diol, an alicyclic diol or a divalent phenol.

Polyether polymer and production process thereof

A polymer and a method for producing same are provided, which includes a repeating unit represented by the following formula (1): wherein: each of A, A, A, and Aindependently represents a hydrogen atom, a halogen atom, an alkyl group, an aralkyl group, an aryl group, a silyl group, a siloxy group, an alkoxy group, an aralkyloxy group, an aryloxy group, an amino group, an amide group, an imide group, or a hydrocarbon thio group; each of A, A, A, and Ais independently any of these groups at different carbons to which the each of A, A, A, and Ais bonded, and A, A, A, and Amay be bonded to each other; and each of m, n, and k is independently an integer in a range of 2 to 20.

Polymer and method for producing same

A copolymer and method for providing it are provided, which includes a monomer unit represented by the following formula (1) and an olefin unit: wherein: each of A, A, A, and Aindependently represents a hydrogen atom, a halogen atom, an alkyl group, an aralkyl group, an aryl group, a silyl group, a siloxy group, an alkoxy group, an aralkyloxy group, an aryloxy group, an amino group, an amide group, an imide group, or a hydrocarbon thio group; which group may have a substituent; and each of m, n, and k is independently an integer in a range of 2 to 20.

Copolymer and method for producing same

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.

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Chiba, Japan

Osamu Ihata