Process for producing poly (cyclic conjugated diene)
AssigneeKabushiki Kaisha Toyota Chuo Kenkyusho
InventorsMitsuru Nakano, Arimitsu Usuki, Qing Yao
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Abstract
Poly(cyclic conjugated diene) polymers are prepared by polymerizing a cyclic conjugated diene monomer or cyclic conjugated diene monomer and a double bond-containing monomer using a transition metal catalyst, preferably a Ni-based catalyst, in a non-polar solvent containing a basic compound or an aromatic halide solvent. The poly(cyclic conjugated diene) polymer may then be subsequently modified by reaction of at least one of the double bonds of the polymer with a modifying substance, for example hydrogen.
Claims18
A process for producing a poly(cyclic conjugated diene) comprising the step of polymerizing a cyclic conjugated diene monomer or a cyclic conjugated diene monomer and a double bond-containing monomer in the presence of a catalyst of formula (IV):
- [LnMXm]a+[A]a− (IV)
- wherein M represents a transition metal element of the eighth, ninth or tenth group in the periodic table;
- L represents a ligand having 1-3π bonds;
- X represents a ligand having at least one σ bond and 0-37π bonds;
- n is 0,1 or 2;
- m is 0 or 1;
- both of n and m are not 0 at the same time;
- when m is 0, a is 2;
- when m is 1, a is 1;
- and A represents a counter anion of [LnMXm]a+, or
- a multi-component catalyst containing:
- (a) a transition metal compound of a transition metal element of the eighth, ninth or tenth group in the periodic table, and
- (b) an organic aluminum compound, and/or
- (c) an electron donating component.
A process for producing a poly(cyclic conjugated diene) comprising the steps of:
- preparing a polymer by polymerizing a cyclohexadiene derivative whose molecular structure is represented by the formula (V),
- wherein substituents R32 and R42 are each individually selected from a hydroxyl group, —O(CO)—R wherein R represents an alkyl group, or trialkylsiloxy group wherein three alkyl groups are the same or different kinds, or
- the cyclohexadiene derivative and a double bond-containing monomer;
- under the catalytic activity of a compound represented by the formula (IV):
- [LnMXm]a+[A]a− (IV)
- wherein M represents a transition metal element of the eighth, ninth or tenth group in the periodic table;
- L represents a ligand having 1-3π bonds;
- X represents a ligand having at least one σ bond and 0-3π bonds;
- n is 0,1 or 2;
- m is 0 or 1;
- both of n and m are not 0 at the same time;
- when m is 0, a is 2;
- when m is 1, a is 1;
- and A represents a counter anion of [LnMXm]a+, or
- a multi-component catalyst containing:
- (a) a transition metal compound of a transition metal element of the eighth, ninth or tenth group in the periodic table, and
- (b) an organic aluminum compound, and/or
- (c) an electron donating component:
- and
- converting the cyclohexadiene derivative of the polymer into paraphenylene by removing the substituents from the cyclohexadiene derivative of the polymer.
A process for producing a poly(cyclic conjugated diene) comprising polymerizing a cyclic conjugated monomer of a cyclic conjugated diene monomer and a double-bond containing monomer in the presence of a catalyst of formula (IVA):
- [LnNiXm]a+[A]a− (IVA)
- wherein L represents a ligand having 1-3 π bonds;
- X represents a ligan having at least one σ bond and 0-3 bonds;
- n is 0, 1 or 2;
- m is 0 or 1;
- both of n and m are not 0 at the same time;
- when m is 0, a is 2;
- when m is 1, a is 1;
- and A represents a counter anion of [LnNiXm]a+, or
- a multi-component catalyst containing:
- (a) a Ni halide compound, and
- (b) an organic aluminum compound, and/or
- (c) an electron donating component.
Dependencies are inferred from the claim text.