Method for producing norbornene based addition (co)polymer
AssigneesNihon University, Jsr Corporation
InventorsYasuo Wakatsuki, Shojiro Kaita
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Abstract
By specifying a catalyst system (combination of catalyst and cocatalyst) which has high polymerization activity, a norbornene based addition (co)polymer is efficiently produced. Specifically, C5H5NiCH3(PPh3) as a catalyst and B(C6F5)3 as a cocatalyst are used for producing a norbornene based addition polymer. Furthermore, C5H5NiCH3(PPh3) as a catalyst and B(C6F5)3 as a cocatalyst are used for producing an addition copolymer of norbornene and norbornene carboxylic acid methyl ester.
Claims5
A method for producing a norbornene based addition polymer, comprising addition polymerizing a norbornene based monomer in the presence of a catalyst (A) below and a cocatalyst (B) below:
- (A) a catalyst comprising a complex in which at least a cyclopentadienyl ligand is coordinated to one transition metal selected from the 8th group, 9th group and 10th group elements in the periodic table;
- (B) a cocatalyst comprising at least one compound selected from an organic aluminum compound (a), an ionic compound (b) capable of reacting with the catalyst (A) to generate a cationic transition metal compound and a compound (c) that promotes dissociation of a ligand of the complex that constitutes the catalyst (A).
A method for producing a norbornene based addition copolymer, comprising addition copolymerizing a norbornene based monomer and a monomer capable of being copolymerized with the norbornene based monomer in the presence of a catalyst (A) below and a cocatalyst (B) below:
- (A) a catalyst comprising a complex in which at least a cyclopentadienyl ligand is coordinated to one transition metal selected from the 8th group, 9th group and 10th group elements in the periodic table;
- (B) a cocatalyst comprising at least one compound selected from an organic aluminum compound (a), an ionic compound (b) capable of reacting with the catalyst (A) to generate a cationic transition metal compound and a compound (c) that promotes dissociation of a ligand of the complex that constitutes the catalyst (A).
Dependencies are inferred from the claim text.