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US 6,211,313 B1Granted
Iron-based catalyst composition and process for producing conjugated diene polymers
AssigneeBridgestone Corporation
InventorSteven Luo
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Abstract
A catalyst composition that is the combination of or the reaction product of ingredients including an iron-containing compound, a hydrogen phosphite, and an aluminoxane. This catalyst composition is useful for polymerizing conjugated diene monomers and is particularly useful for polymerizing 1,3-butadiene into syndiotactic 1,2-polybutadiene.
Claims20
A catalyst composition that is the combination of or the reaction product of ingredients comprising:
- (a) an iron-containing compound;
- (b) a hydrogen phosphite;
- and
- (c) an aluminoxane.
1 more element
A catalyst composition formed by a process comprising the step of combining:
- (a) an iron-containing compound;
- (b) a hydrogen phosphite;
- and
- (c) an aluminoxane.
1 more element
A process for preparing conjugated diene polymers comprising the step of:
- polymerizing conjugated diene monomers in the presence of a catalytically effective amount of a catalyst composition formed by combining:
- (a) an iron-containing compound;
- (b) a hydrogen phosphite;
- and
- (c) an aluminoxane.
2 more elements
Dependencies are inferred from the claim text.